{"id":5053,"date":"2026-01-07T04:07:47","date_gmt":"2026-01-07T04:07:47","guid":{"rendered":"https:\/\/csoasupport.com\/?p=5053"},"modified":"2026-01-07T07:27:30","modified_gmt":"2026-01-07T07:27:30","slug":"pinterest-interview","status":"publish","type":"post","link":"https:\/\/csoasupport.com\/en\/pinterest-interview\/","title":{"rendered":"Pinterest Interview"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"5053\" class=\"elementor elementor-5053\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-1f8b5187 e-flex e-con-boxed e-con e-parent\" data-id=\"1f8b5187\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-544c4157 e-con-full e-flex e-con e-child\" data-id=\"544c4157\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-fa09290 elementor-widget elementor-widget-heading\" data-id=\"fa09290\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h1 class=\"elementor-heading-title elementor-size-default\">Deciphering the Pinterest Interview Code: A Leap in Thinking from \"Code Implementation\" to \"System Appreciation\"<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7d45ed0f elementor-widget elementor-widget-heading\" data-id=\"7d45ed0f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<p class=\"elementor-heading-title elementor-size-default\"><a href=\"https:\/\/csoasupport.com\/en\/interview-proxy\/\" target=\"_blank\">Pinterest Interview - VO Assist<\/a><\/p>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-1e6baa60 e-flex e-con-boxed e-con e-parent\" data-id=\"1e6baa60\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-533a4fef elementor-widget elementor-widget-text-editor\" data-id=\"533a4fef\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"w-full my-[1px]\"><div class=\"py-[3px]\" data-slate-node=\"element\"><span data-slate-node=\"text\"><span class=\"\" data-slate-leaf=\"true\">In Silicon Valley, Pinterest's Offer has been highly sought after. Not only does it have a compensation package that is comparable to that of a top-tier large company, but it also attracts countless technical talents with its unique engineer culture and large-scale visual data challenges. However, Pinterest's interview style is also unique - it<\/span><\/span><span data-slate-node=\"text\"><span class=\"font-[600]\" data-slate-leaf=\"true\">Extremely value neatness of code, tasteful system design, and deep understanding of the core business (Pin, Board)<\/span><\/span><span data-slate-node=\"text\"><span class=\"\" data-slate-leaf=\"true\">The<\/span><\/span><\/div><\/div><div class=\"w-full my-[1px]\"><div class=\"py-[3px]\" data-slate-node=\"element\"><span data-slate-node=\"text\"><span class=\"\" data-slate-leaf=\"true\"><strong><a href=\"https:\/\/csoasupport.com\/en\/interview-proxy\/\">csoasupport Assistance<\/a><\/strong>Having worked with many engineers who have successfully made it to Pinterest, their experience has taught me one core fact: the Pinterest interview is a great opportunity to see how you are doing.<\/span><\/span><span data-slate-node=\"text\"><span class=\"font-[600]\" data-slate-leaf=\"true\">Engineering aesthetics, data thinking and systems architecture skills<\/span><\/span><span data-slate-node=\"text\"><span class=\"\" data-slate-leaf=\"true\">It's an in-depth test. It requires you to write not only correct code, but also \"elegant and scalable\" code.<\/span><\/span><\/div><\/div><div class=\"w-full my-[1px]\" data-slate-fragment=\"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\"><div class=\"py-[3px]\" data-slate-node=\"element\"><span data-slate-node=\"text\"><span class=\"\" data-slate-leaf=\"true\">Today, I'm going to break down the logic of Pinterest's appraisal and share a set of seasoned preparation strategies for you in the context of its latest OA and VO experience.<\/span><\/span><\/div><div data-slate-node=\"element\">\u00a0<\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-4c1714bc e-flex e-con-boxed e-con e-parent\" data-id=\"4c1714bc\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-2f43e15e e-con-full e-flex e-con e-child\" data-id=\"2f43e15e\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;sticky&quot;:&quot;top&quot;,&quot;sticky_on&quot;:[&quot;desktop&quot;],&quot;sticky_offset&quot;:25,&quot;sticky_parent&quot;:&quot;yes&quot;,&quot;sticky_effects_offset&quot;:0,&quot;sticky_anchor_link_offset&quot;:0}\">\n\t\t<div class=\"elementor-element elementor-element-6ea9c4c7 e-con-full e-flex e-con e-child\" data-id=\"6ea9c4c7\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-5c30dc97 elementor-toc--minimized-on-tablet elementor-widget elementor-widget-table-of-contents\" data-id=\"5c30dc97\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;headings_by_tags&quot;:[&quot;h2&quot;,&quot;h3&quot;],&quot;exclude_headings_by_selector&quot;:[],&quot;no_headings_message&quot;:&quot;No headings were found on this page.&quot;,&quot;marker_view&quot;:&quot;bullets&quot;,&quot;icon&quot;:{&quot;value&quot;:&quot;fas 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class=\"elementor-toc__header\">\n\t\t\t<div class=\"elementor-toc__header-title\">\n\t\t\t\tTable Of Content\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-toc__toggle-button elementor-toc__toggle-button--expand\" role=\"button\" tabindex=\"0\" aria-controls=\"elementor-toc__5c30dc97\" aria-expanded=\"true\" aria-label=\"Open table of contents\"><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-down\" viewbox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M207.029 381.476L12.686 187.132c-9.373-9.373-9.373-24.569 0-33.941l22.667-22.667c9.357-9.357 24.522-9.375 33.901-.04L224 284.505l154.745-154.021c9.379-9.335 24.544-9.317 33.901.04l22.667 22.667c9.373 9.373 9.373 24.569 0 33.941L240.971 381.476c-9.373 9.372-24.569 9.372-33.942 0z\"><\/path><\/svg><\/div>\n\t\t\t\t<div class=\"elementor-toc__toggle-button elementor-toc__toggle-button--collapse\" role=\"button\" tabindex=\"0\" aria-controls=\"elementor-toc__5c30dc97\" aria-expanded=\"true\" aria-label=\"Close table of contents\"><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-up\" viewbox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M240.971 130.524l194.343 194.343c9.373 9.373 9.373 24.569 0 33.941l-22.667 22.667c-9.357 9.357-24.522 9.375-33.901.04L224 227.495 69.255 381.516c-9.379 9.335-24.544 9.317-33.901-.04l-22.667-22.667c-9.373-9.373-9.373-24.569 0-33.941L207.03 130.525c9.372-9.373 24.568-9.373 33.941-.001z\"><\/path><\/svg><\/div>\n\t\t\t\t\t<\/div>\n\t\t<div id=\"elementor-toc__5c30dc97\" class=\"elementor-toc__body\">\n\t\t\t<div class=\"elementor-toc__spinner-container\">\n\t\t\t\t<svg class=\"elementor-toc__spinner eicon-animation-spin e-font-icon-svg e-eicon-loading\" aria-hidden=\"true\" viewbox=\"0 0 1000 1000\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M500 975V858C696 858 858 696 858 500S696 142 500 142 142 304 142 500H25C25 237 238 25 500 25S975 237 975 500 763 975 500 975Z\"><\/path><\/svg>\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-4ac73881 e-con-full e-flex e-con e-child\" data-id=\"4ac73881\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-7740825b elementor-widget elementor-widget-image\" data-id=\"7740825b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"519\" height=\"519\" src=\"https:\/\/csoasupport.com\/wp-content\/uploads\/2025\/04\/CS\u4ee3\u5199\u5b66\u957f-1.webp\" class=\"attachment-large size-large wp-image-464\" alt=\"CS Ghostwriter\" srcset=\"https:\/\/csoasupport.com\/wp-content\/uploads\/2025\/04\/CS\u4ee3\u5199\u5b66\u957f-1.webp 519w, https:\/\/csoasupport.com\/wp-content\/uploads\/2025\/04\/CS\u4ee3\u5199\u5b66\u957f-1-300x300.webp 300w, https:\/\/csoasupport.com\/wp-content\/uploads\/2025\/04\/CS\u4ee3\u5199\u5b66\u957f-1-150x150.webp 150w\" sizes=\"(max-width: 519px) 100vw, 519px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-208f7918 elementor-widget elementor-widget-heading\" data-id=\"208f7918\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-heading-title elementor-size-default\">Inquire about reliable face-to-face services<\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-54496035 e-con-full e-flex e-con e-child\" data-id=\"54496035\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-59ddab4d e-con-full e-flex e-con e-child\" data-id=\"59ddab4d\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-665f214 elementor-widget elementor-widget-text-editor\" data-id=\"665f214\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"w-full mt-[1.4em] mb-[1px]\"><h2 class=\"font-[600] py-[3px] text-[1.5em]\" data-slate-node=\"element\" data-anchor=\"%E7%AC%AC%E4%B8%80%E5%85%B3%EF%BC%9A%E5%9C%A8%E7%BA%BF%E6%B5%8B%E8%AF%84%EF%BC%88oa%EF%BC%89%E2%80%94%E2%80%94%E8%B4%B4%E8%BF%91%E4%B8%9A%E5%8A%A1%E7%9A%84%E2%80%9C%E5%BE%AE%E5%9E%8B%E5%B7%A5%E7%A8%8B%E2%80%9D\" data-slug=\"%E7%AC%AC%E4%B8%80%E5%85%B3%EF%BC%9A%E5%9C%A8%E7%BA%BF%E6%B5%8B%E8%AF%84%EF%BC%88oa%EF%BC%89%E2%80%94%E2%80%94%E8%B4%B4%E8%BF%91%E4%B8%9A%E5%8A%A1%E7%9A%84%E2%80%9C%E5%BE%AE%E5%9E%8B%E5%B7%A5%E7%A8%8B%E2%80%9D4\"><span data-slate-node=\"text\"><span class=\"\" data-slate-leaf=\"true\">Online Assessment (OA)<\/span><\/span><\/h2><\/div><div class=\"w-full my-[1px]\"><div class=\"py-[3px]\" data-slate-node=\"element\"><span data-slate-node=\"text\"><span class=\"\" data-slate-leaf=\"true\">The style of Pinterest's OA questions is very \"grounded\", like the questions you'd encounter when writing scripts and working with data at work. It doesn't go for fancy algorithms, but rather focuses on<\/span><\/span><span data-slate-node=\"text\"><span class=\"font-[600]\" data-slate-leaf=\"true\">Data processing, logical clarity and boundary stability<\/span><\/span><span data-slate-node=\"text\"><span class=\"\" data-slate-leaf=\"true\">The<\/span><\/span><\/div><\/div><div class=\"w-full mt-[1em] mb-[1px]\"><h3 class=\"font-[600] py-[3px] text-[1.25em]\" data-slate-node=\"element\" data-anchor=\"1%E6%A0%B8%E5%BF%83%E8%80%83%E7%82%B9%EF%BC%9A%E6%95%B0%E6%8D%AE%E7%BB%93%E6%9E%84%E4%B8%8E%E9%80%92%E5%BD%92%E7%9A%84%E5%AE%9E%E6%88%98%E5%BA%94%E7%94%A8\" data-slug=\"1%E6%A0%B8%E5%BF%83%E8%80%83%E7%82%B9%EF%BC%9A%E6%95%B0%E6%8D%AE%E7%BB%93%E6%9E%84%E4%B8%8E%E9%80%92%E5%BD%92%E7%9A%84%E5%AE%9E%E6%88%98%E5%BA%94%E7%94%A86\"><span data-slate-node=\"text\"><span class=\"\" data-slate-leaf=\"true\">1. Practical applications of data structures and recursion<\/span><\/span><\/h3><\/div><div class=\"w-full my-[1px]\"><div class=\"py-[3px]\" data-slate-node=\"element\"><span data-slate-node=\"text\"><span class=\"\" data-slate-leaf=\"true\">Pinterest's OA topics tend to revolve around its core business data, such as dealing with hashtags, user growth data, and nested categories.<\/span><\/span><\/div><\/div><div class=\"w-full pt-[8px] pb-[18px]\"><div class=\"pt-[8px] mb-[18px] relative group\/table w-fit max-w-full\"><div class=\"overflow-x-auto max-w-full\"><table class=\"m-0 min-w-max table-auto border-separate border-spacing-0\"><tbody data-slate-node=\"element\"><tr class=\"text-start\" data-slate-node=\"element\"><td class=\"text-start border-[var(--border-main)] border-e border-b first:border-s [tr:first-child_&amp;]:border-t [tr:first-child_&amp;]:first:rounded-tl-lg [tr:first-child_&amp;]:last:rounded-tr-lg [tr:last-child_&amp;]:first:rounded-bl-lg [tr:last-child_&amp;]:last:rounded-br-lg py-2 ps-[14px] pe-[14px] [tr:first-child_&amp;]:bg-[var(--fill-tsp-white-light)] [tr:first-child_&amp;]:py-[7px] [tr:first-child_&amp;]:ps-[9px] [tr:first-child_&amp;]:pe-[9px] [tr:first-child_&amp;]:align-top [&amp;:first-child&gt;div]:min-w-[4em] [&amp;&gt;div]:max-w-[390px] [&amp;&gt;div]:text-sm [&amp;&gt;div]:text-[var(--text-primary)] [&amp;&gt;div]:whitespace-pre-wrap [&amp;&gt;div]:break-words [tr:first-child_&amp;&gt;div]:font-medium\" data-slate-node=\"element\"><div><span data-slate-node=\"text\"><span class=\"\" data-slate-leaf=\"true\">Typical Exam Questions<\/span><\/span><\/div><\/td><td class=\"text-start border-[var(--border-main)] border-e border-b first:border-s [tr:first-child_&amp;]:border-t [tr:first-child_&amp;]:first:rounded-tl-lg [tr:first-child_&amp;]:last:rounded-tr-lg [tr:last-child_&amp;]:first:rounded-bl-lg [tr:last-child_&amp;]:last:rounded-br-lg py-2 ps-[14px] pe-[14px] [tr:first-child_&amp;]:bg-[var(--fill-tsp-white-light)] [tr:first-child_&amp;]:py-[7px] [tr:first-child_&amp;]:ps-[9px] [tr:first-child_&amp;]:pe-[9px] [tr:first-child_&amp;]:align-top [&amp;:first-child&gt;div]:min-w-[4em] [&amp;&gt;div]:max-w-[390px] [&amp;&gt;div]:text-sm [&amp;&gt;div]:text-[var(--text-primary)] [&amp;&gt;div]:whitespace-pre-wrap [&amp;&gt;div]:break-words [tr:first-child_&amp;&gt;div]:font-medium\" data-slate-node=\"element\"><div><span data-slate-node=\"text\"><span class=\"\" data-slate-leaf=\"true\">Examination of the core<\/span><\/span><\/div><\/td><td class=\"text-start border-[var(--border-main)] border-e border-b first:border-s [tr:first-child_&amp;]:border-t [tr:first-child_&amp;]:first:rounded-tl-lg [tr:first-child_&amp;]:last:rounded-tr-lg [tr:last-child_&amp;]:first:rounded-bl-lg [tr:last-child_&amp;]:last:rounded-br-lg py-2 ps-[14px] pe-[14px] [tr:first-child_&amp;]:bg-[var(--fill-tsp-white-light)] [tr:first-child_&amp;]:py-[7px] [tr:first-child_&amp;]:ps-[9px] [tr:first-child_&amp;]:pe-[9px] [tr:first-child_&amp;]:align-top [&amp;:first-child&gt;div]:min-w-[4em] [&amp;&gt;div]:max-w-[390px] [&amp;&gt;div]:text-sm [&amp;&gt;div]:text-[var(--text-primary)] [&amp;&gt;div]:whitespace-pre-wrap [&amp;&gt;div]:break-words [tr:first-child_&amp;&gt;div]:font-medium\" data-slate-node=\"element\"><div><span data-slate-node=\"text\"><span class=\"\" data-slate-leaf=\"true\">Reflections of a seasoned veteran<\/span><\/span><\/div><\/td><\/tr><tr class=\"text-start\" data-slate-node=\"element\"><td class=\"text-start border-[var(--border-main)] border-e border-b first:border-s [tr:first-child_&amp;]:border-t [tr:first-child_&amp;]:first:rounded-tl-lg [tr:first-child_&amp;]:last:rounded-tr-lg [tr:last-child_&amp;]:first:rounded-bl-lg [tr:last-child_&amp;]:last:rounded-br-lg py-2 ps-[14px] pe-[14px] [tr:first-child_&amp;]:bg-[var(--fill-tsp-white-light)] [tr:first-child_&amp;]:py-[7px] [tr:first-child_&amp;]:ps-[9px] [tr:first-child_&amp;]:pe-[9px] [tr:first-child_&amp;]:align-top [&amp;:first-child&gt;div]:min-w-[4em] [&amp;&gt;div]:max-w-[390px] [&amp;&gt;div]:text-sm [&amp;&gt;div]:text-[var(--text-primary)] [&amp;&gt;div]:whitespace-pre-wrap [&amp;&gt;div]:break-words [tr:first-child_&amp;&gt;div]:font-medium\" data-slate-node=\"element\"><div><span data-slate-node=\"text\"><span class=\"font-[600]\" data-slate-leaf=\"true\">Top K Most Frequent Hashtags<\/span><\/span><\/div><\/td><td class=\"text-start border-[var(--border-main)] border-e border-b first:border-s [tr:first-child_&amp;]:border-t [tr:first-child_&amp;]:first:rounded-tl-lg [tr:first-child_&amp;]:last:rounded-tr-lg [tr:last-child_&amp;]:first:rounded-bl-lg [tr:last-child_&amp;]:last:rounded-br-lg py-2 ps-[14px] pe-[14px] [tr:first-child_&amp;]:bg-[var(--fill-tsp-white-light)] [tr:first-child_&amp;]:py-[7px] [tr:first-child_&amp;]:ps-[9px] [tr:first-child_&amp;]:pe-[9px] [tr:first-child_&amp;]:align-top [&amp;:first-child&gt;div]:min-w-[4em] [&amp;&gt;div]:max-w-[390px] [&amp;&gt;div]:text-sm [&amp;&gt;div]:text-[var(--text-primary)] [&amp;&gt;div]:whitespace-pre-wrap [&amp;&gt;div]:break-words [tr:first-child_&amp;&gt;div]:font-medium\" data-slate-node=\"element\"><div><span data-slate-node=\"text\"><span class=\"\" data-slate-leaf=\"true\">Hash Map + Heap (or sorted)<\/span><\/span><\/div><\/td><td class=\"text-start border-[var(--border-main)] border-e border-b first:border-s [tr:first-child_&amp;]:border-t [tr:first-child_&amp;]:first:rounded-tl-lg [tr:first-child_&amp;]:last:rounded-tr-lg [tr:last-child_&amp;]:first:rounded-bl-lg [tr:last-child_&amp;]:last:rounded-br-lg py-2 ps-[14px] pe-[14px] [tr:first-child_&amp;]:bg-[var(--fill-tsp-white-light)] [tr:first-child_&amp;]:py-[7px] [tr:first-child_&amp;]:ps-[9px] [tr:first-child_&amp;]:pe-[9px] [tr:first-child_&amp;]:align-top [&amp;:first-child&gt;div]:min-w-[4em] [&amp;&gt;div]:max-w-[390px] [&amp;&gt;div]:text-sm [&amp;&gt;div]:text-[var(--text-primary)] [&amp;&gt;div]:whitespace-pre-wrap [&amp;&gt;div]:break-words [tr:first-child_&amp;&gt;div]:font-medium\" data-slate-node=\"element\"><div><span data-slate-node=\"text\"><span class=\"\" data-slate-leaf=\"true\">Examine the standard solution to the statistics of the data and the Top K problem, as well as the frequency at which the same<\/span><\/span><span data-slate-node=\"text\"><span class=\"font-[600]\" data-slate-leaf=\"true\">dictionary sort<\/span><\/span><span data-slate-node=\"text\"><span class=\"\" data-slate-leaf=\"true\">and other detailing.<\/span><\/span><\/div><\/td><\/tr><tr class=\"text-start\" data-slate-node=\"element\"><td class=\"text-start border-[var(--border-main)] border-e border-b first:border-s [tr:first-child_&amp;]:border-t [tr:first-child_&amp;]:first:rounded-tl-lg [tr:first-child_&amp;]:last:rounded-tr-lg [tr:last-child_&amp;]:first:rounded-bl-lg [tr:last-child_&amp;]:last:rounded-br-lg py-2 ps-[14px] pe-[14px] [tr:first-child_&amp;]:bg-[var(--fill-tsp-white-light)] [tr:first-child_&amp;]:py-[7px] [tr:first-child_&amp;]:ps-[9px] [tr:first-child_&amp;]:pe-[9px] [tr:first-child_&amp;]:align-top [&amp;:first-child&gt;div]:min-w-[4em] [&amp;&gt;div]:max-w-[390px] [&amp;&gt;div]:text-sm [&amp;&gt;div]:text-[var(--text-primary)] [&amp;&gt;div]:whitespace-pre-wrap [&amp;&gt;div]:break-words [tr:first-child_&amp;&gt;div]:font-medium\" data-slate-node=\"element\"><div><span data-slate-node=\"text\"><span class=\"font-[600]\" data-slate-leaf=\"true\">Detect Continuous Growth Days<\/span><\/span><\/div><\/td><td class=\"text-start border-[var(--border-main)] border-e border-b first:border-s [tr:first-child_&amp;]:border-t [tr:first-child_&amp;]:first:rounded-tl-lg [tr:first-child_&amp;]:last:rounded-tr-lg [tr:last-child_&amp;]:first:rounded-bl-lg [tr:last-child_&amp;]:last:rounded-br-lg py-2 ps-[14px] pe-[14px] [tr:first-child_&amp;]:bg-[var(--fill-tsp-white-light)] [tr:first-child_&amp;]:py-[7px] [tr:first-child_&amp;]:ps-[9px] [tr:first-child_&amp;]:pe-[9px] [tr:first-child_&amp;]:align-top [&amp;:first-child&gt;div]:min-w-[4em] [&amp;&gt;div]:max-w-[390px] [&amp;&gt;div]:text-sm [&amp;&gt;div]:text-[var(--text-primary)] [&amp;&gt;div]:whitespace-pre-wrap [&amp;&gt;div]:break-words [tr:first-child_&amp;&gt;div]:font-medium\" data-slate-node=\"element\"><div><span data-slate-node=\"text\"><span class=\"\" data-slate-leaf=\"true\">Dynamic Programming or Double Pointer<\/span><\/span><\/div><\/td><td class=\"text-start border-[var(--border-main)] border-e border-b first:border-s [tr:first-child_&amp;]:border-t [tr:first-child_&amp;]:first:rounded-tl-lg [tr:first-child_&amp;]:last:rounded-tr-lg [tr:last-child_&amp;]:first:rounded-bl-lg [tr:last-child_&amp;]:last:rounded-br-lg py-2 ps-[14px] pe-[14px] [tr:first-child_&amp;]:bg-[var(--fill-tsp-white-light)] [tr:first-child_&amp;]:py-[7px] [tr:first-child_&amp;]:ps-[9px] [tr:first-child_&amp;]:pe-[9px] [tr:first-child_&amp;]:align-top [&amp;:first-child&gt;div]:min-w-[4em] [&amp;&gt;div]:max-w-[390px] [&amp;&gt;div]:text-sm [&amp;&gt;div]:text-[var(--text-primary)] [&amp;&gt;div]:whitespace-pre-wrap [&amp;&gt;div]:break-words [tr:first-child_&amp;&gt;div]:font-medium\" data-slate-node=\"element\"><div><span data-slate-node=\"text\"><span class=\"\" data-slate-leaf=\"true\">Examines the treatment of continuous subsequence problems, focusing on the maintenance of states and the determination of boundary conditions.<\/span><\/span><\/div><\/td><\/tr><tr class=\"text-start\" data-slate-node=\"element\"><td class=\"text-start border-[var(--border-main)] border-e border-b first:border-s [tr:first-child_&amp;]:border-t [tr:first-child_&amp;]:first:rounded-tl-lg [tr:first-child_&amp;]:last:rounded-tr-lg [tr:last-child_&amp;]:first:rounded-bl-lg [tr:last-child_&amp;]:last:rounded-br-lg py-2 ps-[14px] pe-[14px] [tr:first-child_&amp;]:bg-[var(--fill-tsp-white-light)] [tr:first-child_&amp;]:py-[7px] [tr:first-child_&amp;]:ps-[9px] [tr:first-child_&amp;]:pe-[9px] [tr:first-child_&amp;]:align-top [&amp;:first-child&gt;div]:min-w-[4em] [&amp;&gt;div]:max-w-[390px] [&amp;&gt;div]:text-sm [&amp;&gt;div]:text-[var(--text-primary)] [&amp;&gt;div]:whitespace-pre-wrap [&amp;&gt;div]:break-words [tr:first-child_&amp;&gt;div]:font-medium\" data-slate-node=\"element\"><div><span data-slate-node=\"text\"><span class=\"font-[600]\" data-slate-leaf=\"true\">Flatten Nested Categories<\/span><\/span><\/div><\/td><td class=\"text-start border-[var(--border-main)] border-e border-b first:border-s [tr:first-child_&amp;]:border-t [tr:first-child_&amp;]:first:rounded-tl-lg [tr:first-child_&amp;]:last:rounded-tr-lg [tr:last-child_&amp;]:first:rounded-bl-lg [tr:last-child_&amp;]:last:rounded-br-lg py-2 ps-[14px] pe-[14px] [tr:first-child_&amp;]:bg-[var(--fill-tsp-white-light)] [tr:first-child_&amp;]:py-[7px] [tr:first-child_&amp;]:ps-[9px] [tr:first-child_&amp;]:pe-[9px] [tr:first-child_&amp;]:align-top [&amp;:first-child&gt;div]:min-w-[4em] [&amp;&gt;div]:max-w-[390px] [&amp;&gt;div]:text-sm [&amp;&gt;div]:text-[var(--text-primary)] [&amp;&gt;div]:whitespace-pre-wrap [&amp;&gt;div]:break-words [tr:first-child_&amp;&gt;div]:font-medium\" data-slate-node=\"element\"><div><span data-slate-node=\"text\"><span class=\"\" data-slate-leaf=\"true\">Recursion and Dictionary Processing<\/span><\/span><\/div><\/td><td class=\"text-start border-[var(--border-main)] border-e border-b first:border-s [tr:first-child_&amp;]:border-t [tr:first-child_&amp;]:first:rounded-tl-lg [tr:first-child_&amp;]:last:rounded-tr-lg [tr:last-child_&amp;]:first:rounded-bl-lg [tr:last-child_&amp;]:last:rounded-br-lg py-2 ps-[14px] pe-[14px] [tr:first-child_&amp;]:bg-[var(--fill-tsp-white-light)] [tr:first-child_&amp;]:py-[7px] [tr:first-child_&amp;]:ps-[9px] [tr:first-child_&amp;]:pe-[9px] [tr:first-child_&amp;]:align-top [&amp;:first-child&gt;div]:min-w-[4em] [&amp;&gt;div]:max-w-[390px] [&amp;&gt;div]:text-sm [&amp;&gt;div]:text-[var(--text-primary)] [&amp;&gt;div]:whitespace-pre-wrap [&amp;&gt;div]:break-words [tr:first-child_&amp;&gt;div]:font-medium\" data-slate-node=\"element\"><div><span data-slate-node=\"text\"><span class=\"\" data-slate-leaf=\"true\">Examines the ability to traverse complex data structures (nested dictionaries) and how to use the<\/span><\/span><span data-slate-node=\"text\"><span class=\"font-[600]\" data-slate-leaf=\"true\">dot separator<\/span><\/span><span data-slate-node=\"text\"><span class=\"\" data-slate-leaf=\"true\">(Dot-separated keys) are flattened, reflecting the ability to abstract configuration and data structures.<\/span><\/span><\/div><\/td><\/tr><\/tbody><\/table><\/div><div class=\"flex items-center justify-center cursor-pointer rounded-md bg-[var(--Button-primary-white)] shadow-[0px_0.5px_3px_0px_var(--shadow-S)] hover:opacity-80 active:opacity-70 size-8 select-none print:hidden group-hover\/table:opacity-100 opacity-0 transition-opacity duration-100 absolute bottom-[-6px] right-[-5px]\">\u00a0<\/div><\/div><\/div><div class=\"w-full my-[1px]\"><div class=\"py-[3px]\" data-slate-node=\"element\"><span data-slate-node=\"text\"><span class=\"\" data-slate-leaf=\"true\">OA for Pinterest is more of a \"micro-engineering\" exercise. It requires you to be proficient in Python\/Java and other languages with standard libraries like<\/span><\/span><span data-slate-node=\"text\"><span class=\"rounded-[4px] px-[0.4em] py-[0.2em] bg-[var(--Button-secondary-gray)] text-[85%]\" data-slate-leaf=\"true\">collections<\/span><\/span><span data-slate-node=\"text\"><span class=\"\" data-slate-leaf=\"true\">,<\/span><\/span><span data-slate-node=\"text\"><span class=\"rounded-[4px] px-[0.4em] py-[0.2em] bg-[var(--Button-secondary-gray)] text-[85%]\" data-slate-leaf=\"true\">json<\/span><\/span><span data-slate-node=\"text\"><span class=\"\" data-slate-leaf=\"true\">), to be able to solve problems in the most concise and engineering idiomatic way. If you're still looking up the syntax of Pandas or JSON, that's definitely not enough time.<\/span><\/span><\/div><\/div><div class=\"w-full mt-[1em] mb-[1px]\"><h3 class=\"font-[600] py-[3px] text-[1.25em]\" data-slate-node=\"element\" data-anchor=\"2%E6%95%B0%E6%8D%AE%E7%A7%91%E5%AD%A6%E5%B2%97%E7%9A%84%E2%80%9C%E7%BB%9F%E8%AE%A1%E5%AD%A6%E5%A4%A7%E9%80%83%E6%9D%80%E2%80%9D\" data-slug=\"2%E6%95%B0%E6%8D%AE%E7%A7%91%E5%AD%A6%E5%B2%97%E7%9A%84%E2%80%9C%E7%BB%9F%E8%AE%A1%E5%AD%A6%E5%A4%A7%E9%80%83%E6%9D%80%E2%80%9D10\"><span data-slate-node=\"text\"><span class=\"\" data-slate-leaf=\"true\">2. \"Statistical Battle Royale\" for data science posts<\/span><\/span><\/h3><\/div><div class=\"w-full my-[1px]\"><div class=\"py-[3px]\" data-slate-node=\"element\"><span data-slate-node=\"text\"><span class=\"\" data-slate-leaf=\"true\">If you are interviewing for a Data Science (DS) or Product Analyst (PA) position, your interview style will be very \"split\": it requires an engineering mindset, business acumen, and a solid foundation in statistical theory.<\/span><\/span><\/div><\/div><div class=\"w-full my-[1px]\"><div class=\"flex flex-row ps-[2px]\" data-slate-node=\"element\"><span class=\"select-none flex flex-row justify-center items-center h-[30px] w-[24px] me-[2px] whitespace-nowrap flex-shrink-0 li-decorator\" contenteditable=\"false\"><span class=\"font-sans font-normal text-[24px]\">-<\/span><\/span><span class=\"flex-1 py-[3px] font-normal text-[16px] text-[var(--text-primary)]\"><span data-slate-node=\"text\"><span class=\"font-[600]\" data-slate-leaf=\"true\">A\/B Testing<\/span><\/span><span data-slate-node=\"text\"><span class=\"\" data-slate-leaf=\"true\">: Instead of asking you to memorize definitions, the interviewer will just ask for business decisions. For example, \"If the A\/B Test results are Flat (no significant improvement), what decision do you make?\" You need to chat about<\/span><\/span><span data-slate-node=\"text\"><span class=\"font-[600]\" data-slate-leaf=\"true\">Launch Criteria, Maintenance Costs, Strategic Value at Non-Metric Levels<\/span><\/span><span data-slate-node=\"text\"><span class=\"\" data-slate-leaf=\"true\">Show that you are a \"business partner\" who can make decisions, not a calculator who only looks at p-values.<\/span><\/span><\/span><\/div><\/div><div class=\"w-full my-[1px]\"><div class=\"flex flex-row ps-[2px]\" data-slate-node=\"element\"><span class=\"select-none flex flex-row justify-center items-center h-[30px] w-[24px] me-[2px] whitespace-nowrap flex-shrink-0 li-decorator\" contenteditable=\"false\"><span class=\"font-sans font-normal text-[24px]\">-<\/span><\/span><span class=\"flex-1 py-[3px] font-normal text-[16px] text-[var(--text-primary)]\"><span data-slate-node=\"text\"><span class=\"font-[600]\" data-slate-leaf=\"true\">Statistics Deep Dive<\/span><\/span><span data-slate-node=\"text\"><span class=\"\" data-slate-leaf=\"true\">: This is a nightmare for many candidates from CS background. High frequency questions include:<\/span><\/span><span data-slate-node=\"text\"><span class=\"font-[600]\" data-slate-leaf=\"true\">Alpha Correction<\/span><\/span><span data-slate-node=\"text\"><span class=\"\" data-slate-leaf=\"true\">(Multiple testing problem, e.g. Bonferroni correction),<\/span><\/span><span data-slate-node=\"text\"><span class=\"font-[600]\" data-slate-leaf=\"true\">Premise assumptions for hypothesis testing<\/span><\/span><span data-slate-node=\"text\"><span class=\"\" data-slate-leaf=\"true\">(conditions for t-test and z-test to apply),<\/span><\/span><span data-slate-node=\"text\"><span class=\"font-[600]\" data-slate-leaf=\"true\">length of experiment<\/span><\/span><span data-slate-node=\"text\"><span class=\"\" data-slate-leaf=\"true\">(Power Analysis and Seasonality).<\/span><\/span><\/span><\/div><\/div><div class=\"w-full mt-[1.4em] mb-[1px]\"><h2 class=\"font-[600] py-[3px] text-[1.5em]\" data-slate-node=\"element\" data-anchor=\"%E7%AC%AC%E4%BA%8C%E5%85%B3%EF%BC%9A%E8%99%9A%E6%8B%9F%E7%8E%B0%E5%9C%BA%E9%9D%A2%E8%AF%95%EF%BC%88vo%EF%BC%89%E2%80%94%E2%80%94%E4%B8%80%E6%AD%A5%E6%AD%A5%E6%8C%96%E5%88%B0%E5%BA%95%E7%9A%84%E7%B3%BB%E7%BB%9F%E5%93%81%E5%91%B3\" data-slug=\"%E7%AC%AC%E4%BA%8C%E5%85%B3%EF%BC%9A%E8%99%9A%E6%8B%9F%E7%8E%B0%E5%9C%BA%E9%9D%A2%E8%AF%95%EF%BC%88vo%EF%BC%89%E2%80%94%E2%80%94%E4%B8%80%E6%AD%A5%E6%AD%A5%E6%8C%96%E5%88%B0%E5%BA%95%E7%9A%84%E7%B3%BB%E7%BB%9F%E5%93%81%E5%91%B314\"><span data-slate-node=\"text\"><span class=\"\" data-slate-leaf=\"true\">Virtual on-site interviews (VO)<\/span><\/span><\/h2><\/div><div class=\"w-full my-[1px]\"><div class=\"py-[3px]\" data-slate-node=\"element\"><span data-slate-node=\"text\"><span class=\"\" data-slate-leaf=\"true\">Pinterest's VO is very fast-paced, and the interviewer's style of questioning is \"step-by-step to the end\", not giving you any opportunity to get around.<\/span><\/span><\/div><\/div><div class=\"w-full mt-[1em] mb-[1px]\"><h3 class=\"font-[600] py-[3px] text-[1.25em]\" data-slate-node=\"element\" data-anchor=\"1%E7%BC%96%E7%A0%81%E8%BD%AE%EF%BC%9A%E7%AE%97%E6%B3%95%E4%B8%8E%E5%B7%A5%E7%A8%8B%E7%9A%84%E5%AE%8C%E7%BE%8E%E7%BB%93%E5%90%88\" data-slug=\"1%E7%BC%96%E7%A0%81%E8%BD%AE%EF%BC%9A%E7%AE%97%E6%B3%95%E4%B8%8E%E5%B7%A5%E7%A8%8B%E7%9A%84%E5%AE%8C%E7%BE%8E%E7%BB%93%E5%90%8816\"><span data-slate-node=\"text\"><span class=\"\" data-slate-leaf=\"true\">1. The coding wheel: the perfect marriage of algorithms and engineering<\/span><\/span><\/h3><\/div><div class=\"w-full my-[1px]\"><div class=\"py-[3px]\" data-slate-node=\"element\"><span data-slate-node=\"text\"><span class=\"\" data-slate-leaf=\"true\">Pinterest's coding round questions are more difficult but focus more on the<\/span><\/span><span data-slate-node=\"text\"><span class=\"font-[600]\" data-slate-leaf=\"true\">How to Solve Complex Problems with an Elegant Engineering Approach<\/span><\/span><span data-slate-node=\"text\"><span class=\"\" data-slate-leaf=\"true\">The<\/span><\/span><\/div><\/div><div class=\"w-full my-[1px]\"><div class=\"flex flex-row ps-[2px]\" data-slate-node=\"element\"><span class=\"select-none flex flex-row justify-center items-center h-[30px] w-[24px] me-[2px] whitespace-nowrap flex-shrink-0 li-decorator\" contenteditable=\"false\"><span class=\"font-sans font-normal text-[24px]\">-<\/span><\/span><span class=\"flex-1 py-[3px] font-normal text-[16px] text-[var(--text-primary)]\"><span data-slate-node=\"text\"><span class=\"font-[600]\" data-slate-leaf=\"true\">Mirror reflection path problem<\/span><\/span><span data-slate-node=\"text\"><span class=\"\" data-slate-leaf=\"true\">: Typical graph\/search problem, but the pitfalls are boundaries and state records. Veterans will abstract the direction as<\/span><\/span><span data-slate-node=\"text\"><span class=\"rounded-[4px] px-[0.4em] py-[0.2em] bg-[var(--Button-secondary-gray)] text-[85%]\" data-slate-leaf=\"true\">(dx, dy)<\/span><\/span><span data-slate-node=\"text\"><span class=\"\" data-slate-leaf=\"true\">and use the mapping table to handle reflective changes while in the<\/span><\/span><span data-slate-node=\"text\"><span class=\"rounded-[4px] px-[0.4em] py-[0.2em] bg-[var(--Button-secondary-gray)] text-[85%]\" data-slate-leaf=\"true\">visited<\/span><\/span><span data-slate-node=\"text\"><span class=\"\" data-slate-leaf=\"true\">Add to the record<\/span><\/span><span data-slate-node=\"text\"><span class=\"font-[600]\" data-slate-leaf=\"true\">Direction Information<\/span><\/span><span data-slate-node=\"text\"><span class=\"\" data-slate-leaf=\"true\">to avoid infinite loops.<\/span><\/span><\/span><\/div><\/div><div class=\"w-full my-[1px]\"><div class=\"flex flex-row ps-[2px]\" data-slate-node=\"element\"><span class=\"select-none flex flex-row justify-center items-center h-[30px] w-[24px] me-[2px] whitespace-nowrap flex-shrink-0 li-decorator\" contenteditable=\"false\"><span class=\"font-sans font-normal text-[24px]\">-<\/span><\/span><span class=\"flex-1 py-[3px] font-normal text-[16px] text-[var(--text-primary)]\"><span data-slate-node=\"text\"><span class=\"font-[600]\" data-slate-leaf=\"true\">Top K Ad Stats (sliding window version)<\/span><\/span><span data-slate-node=\"text\"><span class=\"\" data-slate-leaf=\"true\">: The difficulty with this question is that<\/span><\/span><span data-slate-node=\"text\"><span class=\"font-[600]\" data-slate-leaf=\"true\">Real-time updates with large-scale data<\/span><\/span><span data-slate-node=\"text\"><span class=\"\" data-slate-leaf=\"true\">. The interviewer will challenge your traditional<\/span><\/span><span data-slate-node=\"text\"><span class=\"rounded-[4px] px-[0.4em] py-[0.2em] bg-[var(--Button-secondary-gray)] text-[85%]\" data-slate-leaf=\"true\">Hash + Heap<\/span><\/span><span data-slate-node=\"text\"><span class=\"\" data-slate-leaf=\"true\">Performance of the solution with frequent data changes. A good solution will introduce<\/span><\/span><span data-slate-node=\"text\"><span class=\"font-[600]\" data-slate-leaf=\"true\">Bucket + Counter Map<\/span><\/span><span data-slate-node=\"text\"><span class=\"\" data-slate-leaf=\"true\">, aligning timestamps down to time slices, and sliding through multiple buckets to clean up expired data, demonstrating an understanding of streaming data processing.<\/span><\/span><\/span><\/div><\/div><div class=\"w-full mt-[1em] mb-[1px]\"><h3 class=\"font-[600] py-[3px] text-[1.25em]\" data-slate-node=\"element\" data-anchor=\"2%E7%B3%BB%E7%BB%9F%E8%AE%BE%E8%AE%A1%EF%BC%9A%E5%9B%B4%E7%BB%95pin%E5%92%8Cboard%E7%9A%84%E6%9E%81%E8%87%B4%E4%BC%98%E5%8C%96\" data-slug=\"2%E7%B3%BB%E7%BB%9F%E8%AE%BE%E8%AE%A1%EF%BC%9A%E5%9B%B4%E7%BB%95pin%E5%92%8Cboard%E7%9A%84%E6%9E%81%E8%87%B4%E4%BC%98%E5%8C%9620\"><span data-slate-node=\"text\"><span class=\"\" data-slate-leaf=\"true\">2. System design: extreme optimization around Pin and Board<\/span><\/span><\/h3><\/div><div class=\"w-full my-[1px]\"><div class=\"py-[3px]\" data-slate-node=\"element\"><span data-slate-node=\"text\"><span class=\"\" data-slate-leaf=\"true\">Pinterest's system design wheel is almost always centered around its core business, such as the \"user click event and ad event aggregation system\", \"product Catalog uploading system\", or the real-time stats of \"Top Pinned Images\" real-time statistics.<\/span><\/span><\/div><\/div><div class=\"w-full my-[1px]\"><div class=\"flex flex-row ps-[2px]\" data-slate-node=\"element\"><span class=\"select-none flex flex-row justify-center items-center h-[30px] w-[24px] me-[2px] whitespace-nowrap flex-shrink-0 li-decorator\" contenteditable=\"false\"><span class=\"font-sans font-normal text-[24px]\">-<\/span><\/span><span class=\"flex-1 py-[3px] font-normal text-[16px] text-[var(--text-primary)]\"><span data-slate-node=\"text\"><span class=\"font-[600]\" data-slate-leaf=\"true\">real time aggregation system<\/span><\/span><span data-slate-node=\"text\"><span class=\"\" data-slate-leaf=\"true\">: Interviewers will challenge your understanding of real-time stream processing. Don't just stop at<\/span><\/span><span data-slate-node=\"text\"><span class=\"rounded-[4px] px-[0.4em] py-[0.2em] bg-[var(--Button-secondary-gray)] text-[85%]\" data-slate-leaf=\"true\">Flink\/Spark Streaming<\/span><\/span><span data-slate-node=\"text\"><span class=\"\" data-slate-leaf=\"true\">on the name of the framework to go deeper into the<\/span><\/span><span data-slate-node=\"text\"><span class=\"font-[600]\" data-slate-leaf=\"true\">How to Simplify Join, How to Sharpen Peaks and Fill Valleys, How to Ensure Idempotence<\/span><\/span><span data-slate-node=\"text\"><span class=\"\" data-slate-leaf=\"true\">For example, Redis can be used to build intermediate mapping relationships. For example, Redis can be utilized to build intermediate mapping relationships to alleviate complex logic in advance and do Lazy Join in the background.<\/span><\/span><\/span><\/div><\/div><div class=\"w-full my-[1px]\"><div class=\"flex flex-row ps-[2px]\" data-slate-node=\"element\"><span class=\"select-none flex flex-row justify-center items-center h-[30px] w-[24px] me-[2px] whitespace-nowrap flex-shrink-0 li-decorator\" contenteditable=\"false\"><span class=\"font-sans font-normal text-[24px]\">-<\/span><\/span><span class=\"flex-1 py-[3px] font-normal text-[16px] text-[var(--text-primary)]\"><span data-slate-node=\"text\"><span class=\"font-[600]\" data-slate-leaf=\"true\">Mass Catalog Upload<\/span><\/span><span data-slate-node=\"text\"><span class=\"\" data-slate-leaf=\"true\">: In the scenario of \"uploading 500,000 items at once\", the interviewer will challenge your architectural stability. You need to start from<\/span><\/span><span data-slate-node=\"text\"><span class=\"font-[600]\" data-slate-leaf=\"true\">read-write ratio<\/span><\/span><span data-slate-node=\"text\"><span class=\"\" data-slate-leaf=\"true\">Start by designing the<\/span><\/span><span data-slate-node=\"text\"><span class=\"font-[600]\" data-slate-leaf=\"true\">Write Buffer + Backend Batch Persistence + Frontend Cache<\/span><\/span><span data-slate-node=\"text\"><span class=\"\" data-slate-leaf=\"true\">architecture, and adding<\/span><\/span><span data-slate-node=\"text\"><span class=\"font-[600]\" data-slate-leaf=\"true\">task queue<\/span><\/span><span data-slate-node=\"text\"><span class=\"\" data-slate-leaf=\"true\">to ensure high throughput and stability.<\/span><\/span><\/span><\/div><\/div><div class=\"w-full my-[1px]\"><div class=\"flex flex-row ps-[2px]\" data-slate-node=\"element\"><span class=\"select-none flex flex-row justify-center items-center h-[30px] w-[24px] me-[2px] whitespace-nowrap flex-shrink-0 li-decorator\" contenteditable=\"false\"><span class=\"font-sans font-normal text-[24px]\">-<\/span><\/span><span class=\"flex-1 py-[3px] font-normal text-[16px] text-[var(--text-primary)]\"><span data-slate-node=\"text\"><span class=\"font-[600]\" data-slate-leaf=\"true\">High Concurrency Challenge<\/span><\/span><span data-slate-node=\"text\"><span class=\"\" data-slate-leaf=\"true\">: In the face of \"100,000 favorites per second\", you need to prepare a complete set of<\/span><\/span><span data-slate-node=\"text\"><span class=\"font-[600]\" data-slate-leaf=\"true\">Highly available, highly concurrent<\/span><\/span><span data-slate-node=\"text\"><span class=\"\" data-slate-leaf=\"true\">Programs, including:<\/span><\/span><span data-slate-node=\"text\"><span class=\"font-[600]\" data-slate-leaf=\"true\">Redis cluster sharding, local caching, asynchronous bulk writes, fusion mechanisms, flow-limiting degradation strategies<\/span><\/span><span data-slate-node=\"text\"><span class=\"\" data-slate-leaf=\"true\">The<\/span><\/span><\/span><\/div><\/div><div class=\"w-full mt-[1em] mb-[1px]\"><h3 class=\"font-[600] py-[3px] text-[1.25em]\" data-slate-node=\"element\" data-anchor=\"3%E8%A1%8C%E4%B8%BA%E9%9D%A2%E8%AF%95%EF%BC%88bq%EF%BC%89%EF%BC%9A%E7%BB%93%E6%9E%84%E5%8C%96%E4%B8%8E%E5%BD%B1%E5%93%8D%E5%8A%9B\" data-slug=\"3%E8%A1%8C%E4%B8%BA%E9%9D%A2%E8%AF%95%EF%BC%88bq%EF%BC%89%EF%BC%9A%E7%BB%93%E6%9E%84%E5%8C%96%E4%B8%8E%E5%BD%B1%E5%93%8D%E5%8A%9B25\"><span data-slate-node=\"text\"><span class=\"\" data-slate-leaf=\"true\">3. Behavioral interviewing (BQ): structured vs. influential<\/span><\/span><\/h3><\/div><div class=\"w-full my-[1px]\"><div class=\"py-[3px]\" data-slate-node=\"element\"><span data-slate-node=\"text\"><span class=\"\" data-slate-leaf=\"true\">Pinterest is very high on the list of<\/span><\/span><span data-slate-node=\"text\"><span class=\"font-[600]\" data-slate-leaf=\"true\">Leadership, Conflict Resolution and Project Ownership<\/span><\/span><span data-slate-node=\"text\"><span class=\"\" data-slate-leaf=\"true\">The<\/span><\/span><\/div><\/div><div class=\"w-full my-[1px]\"><div class=\"flex flex-row ps-[2px]\" data-slate-node=\"element\"><span class=\"select-none flex flex-row justify-center items-center h-[30px] w-[24px] me-[2px] whitespace-nowrap flex-shrink-0 li-decorator\" contenteditable=\"false\"><span class=\"font-sans font-normal text-[24px]\">-<\/span><\/span><span class=\"flex-1 py-[3px] font-normal text-[16px] text-[var(--text-primary)]\"><span data-slate-node=\"text\"><span class=\"font-[600]\" data-slate-leaf=\"true\">preparation strategy<\/span><\/span><span data-slate-node=\"text\"><span class=\"\" data-slate-leaf=\"true\">: Use the STAR framework, but make sure your story is<\/span><\/span><span data-slate-node=\"text\"><span class=\"font-[600]\" data-slate-leaf=\"true\">Structured<\/span><\/span><span data-slate-node=\"text\"><span class=\"font-[600]\" data-slate-leaf=\"true\">and<\/span><\/span><span data-slate-node=\"text\"><span class=\"font-[600]\" data-slate-leaf=\"true\">Impact-focused<\/span><\/span><span data-slate-node=\"text\"><span class=\"\" data-slate-leaf=\"true\">.. Intersperse the narrative of the project with specific data indicators and the scope of the impact.<\/span><\/span><\/span><\/div><\/div><div class=\"w-full my-[1px]\"><div class=\"flex flex-row ps-[2px]\" data-slate-node=\"element\"><span class=\"select-none flex flex-row justify-center items-center h-[30px] w-[24px] me-[2px] whitespace-nowrap flex-shrink-0 li-decorator\" contenteditable=\"false\"><span class=\"font-sans font-normal text-[24px]\">-<\/span><\/span><span class=\"flex-1 py-[3px] font-normal text-[16px] text-[var(--text-primary)]\"><span data-slate-node=\"text\"><span class=\"font-[600]\" data-slate-leaf=\"true\">Core values<\/span><\/span><span data-slate-node=\"text\"><span class=\"\" data-slate-leaf=\"true\">: Show that you are interested in<\/span><\/span><span data-slate-node=\"text\"><span class=\"font-[600]\" data-slate-leaf=\"true\">Innovation, visualization, and the user experience for<\/span><\/span><span data-slate-node=\"text\"><span class=\"\" data-slate-leaf=\"true\">attention, which fits well with Pinterest's culture.<\/span><\/span><\/span><\/div><\/div><div class=\"w-full mt-[1.4em] mb-[1px]\"><h2 class=\"font-[600] py-[3px] text-[1.5em]\" data-slate-node=\"element\" data-anchor=\"%E7%BB%93%E8%AF%AD%EF%BC%9A%E5%B7%A5%E7%A8%8B%E5%AE%A1%E7%BE%8E%EF%BC%8C%E5%86%B3%E5%AE%9A%E4%BD%A0%E7%9A%84%E9%AB%98%E5%BA%A6\" data-slug=\"%E7%BB%93%E8%AF%AD%EF%BC%9A%E5%B7%A5%E7%A8%8B%E5%AE%A1%E7%BE%8E%EF%BC%8C%E5%86%B3%E5%AE%9A%E4%BD%A0%E7%9A%84%E9%AB%98%E5%BA%A629\"><span data-slate-node=\"text\"><span class=\"\" data-slate-leaf=\"true\">Engineering aesthetics that determine your height<\/span><\/span><\/h2><\/div><div class=\"w-full my-[1px]\"><div class=\"py-[3px]\" data-slate-node=\"element\"><span data-slate-node=\"text\"><span class=\"\" data-slate-leaf=\"true\">The Pinterest interview is the ultimate test of your engineering aesthetics and taste in systems. It requires you to think beyond \"just run it\" and pursue \"elegant, efficient, and scalable\" solutions.<\/span><\/span><\/div><\/div><div class=\"w-full my-[1px]\"><div class=\"py-[3px]\" data-slate-node=\"element\"><span data-slate-node=\"text\"><span class=\"\" data-slate-leaf=\"true\">The best strategy for preparing for a Pinterest interview is:<\/span><\/span><span data-slate-node=\"text\"><span class=\"font-[600]\" data-slate-leaf=\"true\">Combine your algorithmic fundamentals with real-world experience with large-scale systems.<\/span><\/span><span data-slate-node=\"text\"><span class=\"\" data-slate-leaf=\"true\">In every coding and design, ask yourself one more time, \"If this system is going to support hundreds of millions of users, is my design stable and elegant enough?\"<\/span><\/span><\/div><\/div><div class=\"w-full my-[1px]\" 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