The Pinterest SWE Interview Guide
See how Pinterest runs its software engineer loop: every round, what each one tests, and what each level pays. Then drill the real questions candidates report from recent loops, from ranking design to weighted sampling, so nothing in the room surprises you.
- Loop length: 4 to 6 weeks
- Expected difficulty: Medium
- Coding platform: CoderPad
- System design: From Senior
Pinterest levels & pay
- Software Engineer (L3, Entry)
- Software Engineer II (L4, Mid)
- Senior Engineer (L5, Senior)
- Staff Engineer (L6, Staff)
- Sr. Staff Engineer (L7, Sr Staff)
- Principal Engineer (L8, Principal)
The Pinterest SWE interview, round by round
Recruiter screen (30 min · call)
The opening conversation. Your recruiter walks through your background, the level you are targeting, your timeline, and your comp expectations, and gives you a first read on the team and the surface you would work on. It is rarely technical, but it quietly sets your level, and your level shapes how hard every round after it will be.
- Anchor your level early. Targeting Senior versus Staff changes the shape of the whole loop, so be deliberate about where you position yourself.
- Know the product surface. Pinterest runs on ranking and recommendations, so signal genuine interest in feeds, search, or ads if that is the team.
- Have your comp range ready. This is where the negotiation window first opens, and a vague answer here can cap your offer later.
Coding phone screen (45 min · CoderPad)
One medium coding problem on a shared editor with a Pinterest engineer. Communication counts as much as the solution here: clarifying the problem, narrating your approach, and reasoning through edge cases out loud is what separates a clear pass from a borderline call. Expect a practical, well-scoped problem rather than an obscure puzzle.
- Reach a working, optimal solution and talk through the trade-offs as you build it, rather than coding in silence.
- Practical over exotic. Pinterest leans toward problems that resemble real product work, so favour clear structure over a clever trick.
- Readable beats rushed. Clean, correct code you can explain outperforms a fragile optimum you cannot defend.
Onsite coding rounds (2 rounds · virtual)
Two back-to-back coding interviews, each about an hour, with a Pinterest engineer on a shared editor. One tends to be data-structures-heavy, the other more applied, often loosely themed around counting, sampling, or ranking work that mirrors the product. Optimal time and space are expected, with edge cases handled without prompting.
- Core patterns repeat. Hash maps, heaps, graphs and BFS, sliding window, and interval problems cover most of what shows up.
- Sampling and counting appear. Weighted sampling, top-k, and streaming-count style problems fit Pinterest's ranking-heavy product and surface often.
- Narrate as you go. State assumptions, complexity, and trade-offs aloud; interviewers score how you think, not just the final answer.
System design round (60 min · virtual, from Senior)
A single design interview, weighted from Senior and up, almost always on a Pinterest-shaped surface: a home feed, a ranking or recommendation pipeline, a leaderboard or trending service, or an ads-serving path. You design it end to end and defend your choices under follow-ups. Pragmatism and capacity math beat naming trendy technologies.
- Expect a ranking or feed prompt. Design candidate retrieval, feature lookup, ranking, and serving, with caching and freshness trade-offs you can defend.
- Do the capacity math. Estimate QPS, storage, and fan-out out loud; a design you cannot size is a design you cannot defend.
- Depth on trade-offs wins. Interviewers push on consistency, staleness, and failure handling, so go deep on a few decisions rather than broad and shallow.
Behavioral & values round (45 min · virtual)
A dedicated round, often with a hiring manager, on how you work: collaboration, ownership, handling disagreement, and past impact. Pinterest weighs its values here, putting users first, collaborating across teams, and acting like an owner, so bring concrete stories rather than rehearsed generalities. This round decides more borderline loops than candidates expect.
- Bring specific STAR stories. One concrete example per theme, with real metrics and your exact role, beats a polished summary every time.
- Show ownership and collaboration. Pinterest values engineers who take a surface end to end and knit work across teams, so pick stories that show both.
- Have a real conflict story. Expect a push on disagreement or a decision you regret; answer with what you actually did and learned.
How to prepare
Keep a daily coding rhythm (Weeks 1 to 4)
Code every day for the whole month. Rotate through the patterns Pinterest leans on, hash maps, heaps, graphs and BFS, sliding window, intervals, and sampling and counting problems, starting at medium and building depth as the weeks go on, always timed on a shared editor.
Build ranking-flavoured design reps (Weeks 2 to 3)
Once your coding is warm, add system design (Senior and up). Work through three or four full designs on Pinterest-shaped surfaces, a home feed, a recommendation pipeline, a trending or leaderboard service, saying each decision aloud and preparing for follow-ups on freshness, caching, and scale.
Prepare values and impact stories (Weeks 1 to 2)
Draft these early so you have time to rehearse. Write one specific STAR example each for ownership, collaboration, disagreement, and a decision you regret, each with concrete metrics and your role, and practice delivering each in about two minutes.
Run full mock loops (Week 4)
In the last week, put it together: sit a few complete loops back to back, two coding rounds plus design and behavioral in one session, so your focus and answers hold across a full day of interviews.
Recently asked
Weighted sampling from a score distribution
About Pinterest
Pinterest is a visual discovery platform where people find ideas for what they want to do and buy, saving images, called Pins, onto boards across interests like home, style, food, and travel. Behind the simple grid sits a large-scale recommendation and search system that ranks billions of Pins to fill each person's home feed and related suggestions, which is why so much of its engineering centers on retrieval, ranking, and serving at scale.
The business runs on advertising, matching promoted Pins to intent as users plan and shop, so ads ranking and measurement sit alongside the organic recommendation stack. Engineering hires span the home feed, search, ads, creator tools, and the shared machine-learning and serving infrastructure underneath them, and the bar centers on practical systems thinking and clean, product-minded code.
Frequently asked
How many rounds is the Pinterest interview?
Typically five stages: a recruiter screen, a coding phone screen, two onsite coding rounds, a system-design round from Senior up, and a behavioral and values round. The full loop usually runs four to six weeks.
How hard is the Pinterest SWE interview?
Medium overall. Of the questions Karavine tracks, most sit at medium, with only about 10 percent rating hard. The coding bar is beatable with focused pattern practice, and the system-design round decides most senior loops.
Does Pinterest ask system design?
Yes, weighted from Senior and up. Expect a Pinterest-shaped prompt: a home feed, a ranking or recommendation pipeline, a trending or leaderboard service, or an ads-serving path, designed end to end with capacity math you can defend.
What coding topics does Pinterest focus on?
Core data structures and algorithms: hash maps, heaps, graphs and BFS, sliding window, and interval problems, plus sampling and counting problems that fit its ranking-heavy product. Most questions sit at medium, with a hard reserved for the tougher rounds.
Does Pinterest ask about ranking and recommendations?
Often, especially at Senior and above. Design rounds frequently center on candidate retrieval, feature lookup, ranking, and serving a feed, and coding problems lean toward sampling, top-k, and counting work that mirrors how the product ranks Pins.
What platform does Pinterest use for coding interviews?
Pinterest typically uses a shared collaborative editor such as CoderPad for the phone screen and onsite coding rounds, so practice writing and running code while narrating your approach out loud.
What is the Pinterest Senior Engineer (L5) salary?
Total compensation averages roughly $360k per year (base near $205k, plus PINS RSUs and a year-1 sign-on). Levels range from around $190k at entry to well over $1M at Staff and above. Use the estimator above to model your own offer.
How long does the Pinterest interview process take?
Usually four to six weeks from recruiter screen to onsite, then about a week for the debrief and decision. Timelines can stretch during hiring freezes or team-match steps.
Does Pinterest have an online assessment?
For many software engineer roles Pinterest skips a formal OA and goes straight to a coding phone screen, though a timed take-home or assessment can appear for some teams or new-grad pipelines. Treat the phone screen as your first real filter.
Can I reapply to Pinterest after a rejection?
Yes. Pinterest generally asks candidates to wait around six months to a year before reapplying to a similar role. Use the gap to close the specific gaps the debrief flagged, especially on design if that was the weak round.
What are Pinterest's values in interviews?
Pinterest weighs values like putting users first, collaborating across teams, and acting like an owner. The behavioral round probes these directly, so prepare concrete stories that show ownership of a surface and cross-team work, each with real metrics.
What is the difference between Pinterest Senior and Staff engineer?
Senior (L5) is expected to own features and surfaces end to end; Staff (L6) is expected to drive designs and influence across teams. The Staff loop is noticeably more design- and scope-heavy, with a deeper system-design round and a cross-team round on how you set technical direction.
How should I prepare for the Pinterest interview?
Drill the patterns Pinterest repeats at medium difficulty, build ranking-flavoured system-design reps, and prepare specific values and impact stories. Karavine's Pinterest pack is exactly this plan with worked solutions.
Does Pinterest hire remote software engineers?
Yes. Pinterest supports flexible and remote work for many engineering roles while keeping hubs in San Francisco, Palo Alto, Seattle, and New York. Comp is adjusted by location, which the estimator above reflects.
Is the Pinterest coding bar as hard as other big tech companies?
The raw difficulty is a notch below the hardest FAANG loops: fewer pure hard problems and more practical, product-shaped questions. That said, communication and clean code are weighed heavily, so a correct-but-silent solution can still stall.
What machine learning knowledge does Pinterest expect from SWEs?
For general software engineer roles, deep ML theory is not required, but familiarity with how ranking and recommendation systems are built helps in design rounds. Dedicated ML engineer loops go deeper on modeling and features.