Anthropic acquired Stainless in May 2026. The careers page at jobs.ashbyhq.com/stainlessapi/ now shows zero open positions.
This guide captures Stainless's hiring architecture — the roles it filled, the compensation bands it published, the multi-stage interview process it ran, the New York workspace it maintained, and the traits that predicted long-term fit — as a reference for what Anthropic's SDK team may now seek. Stainless ran at roughly $30 million in annual revenue with 58 employees, founded in 2022, with a $25M Series A raised in December 2024 before the acquisition closed.
Who got hired and onto which teams
Stainless hired for a functional org chart spanning engineering leadership, product design, go-to-market, recruiting, and technical customer success, all from a New York headquarters. Zero G Talent's board data confirms the shape: 11 salaried roles clustered in six titles, all tagged to the New York office. The salary band spanned $120,000 to $255,000 with a median near $190,000.
| Role | Salary band (USD/year) |
|---|---|
| Engineering Manager | $210,000 – $255,000 |
| Engineering Manager, SDKs | $210,000 – $255,000 |
| Product Designer | $170,000 – $220,000 |
| Account Executive | $185,000 – $220,000 |
| Recruiter | $140,000 – $210,000 |
| Technical Success Manager | $120,000 – $190,000 |
The two engineering-manager slots sat at the top, reflecting the premium Stainless placed on leaders who could ship SDK infrastructure for customers like OpenAI, Meta, and Cloudflare. Product design and sales clustered in the $170k–$220k band, while go-to-market and support roles started at $120k and topped out at $210k.
No pure individual-contributor software engineer roles appeared in the final snapshot. Three hiring tracks operated at different cadences per ClavePrep's generic guide for software employers: campus and early-career funnels compressed into days or two weeks with heavy online assessments; lateral and mid-level loops stretched two to six weeks with recruiter screens and ownership-story panels; senior and leadership loops ran longer with strategy narratives and multi-panel calibration.
What it paid
The compensation data above reflects what Zero G Talent captured from Stainless's own postings before the acquisition closed. Equity mechanics aren't disclosed in the board postings.
Benefits listed on third-party aggregators for other companies sharing the Stainless name (Penn Stainless, North American Stainless) include medical, dental, vision, 401(k) match, disability, tuition reimbursement, and profit sharing, but these describe unrelated manufacturing operations. Stainless (the API company) listed a hybrid workspace on Built In: "Employees engage in a combination of remote and on-site work. Typical time on-site: Flexible."
How the hiring process worked
ClavePrep publishes a generic five-stage funnel for software employers like Stainless: application screen, skills gate (OA/take-home), technical deep-dive, hiring-manager calibration, offer. The weighting shifts by track: campus, lateral, or senior. US-facing loops for mid-level roles typically span two to six weeks per ClavePrep; senior panels can stretch longer when compensation approvals and multi-panel scheduling stack.
Stage one: ATS pass plus recruiter eligibility check. The system scans for JD keywords — degree, years, tools, licenses, location — and the recruiter verifies work authorization, notice period, and relocation constraints before you advance.
Stage two: the skills gate. Early-career and campus tracks lean heavily on timed online assessments or take-homes. Lateral engineering roles may swap the OA for a live coding session or take-home emphasizing clarity and tests. Senior and leadership tracks often skip the timed gate entirely, moving straight to ownership narratives.
Stage three: the technical deep-dive. Interviewers listen for fundamentals, debugging habits, and follow-up handling. Candidates state constraints and approach before writing code, explain complexity in plain English, and when stuck, propose a simpler correct solution before optimizing.
Stage four: the hiring-manager or bar panel. ClavePrep's guide says this stage includes "bar-level calibration and team fit" alongside technical assessment. Candidates prepare two STAR stories with metrics — ownership, conflict/recovery, impact — deliverable in roughly 90 seconds each. The panel checks whether your slice of team work maps to the role's scope and whether your "why this business unit" answer is specific.
Stage five: offer and background. Confirm role level, team, and location in writing. Align start date with notice period and background-check lead time. Decide walk-away constraints before compensation talks.
Green flags ClavePrep reports: recruiter provides a clear stage list, predictable follow-ups, written confirmation of next steps, interviewers who have read your résumé. Yellow flags: long silence after a strong round without a stated SLA, last-minute panel changes, conflicting descriptions of the role level. Red flags: unpaid "trial work" that looks like free consulting, pressure to resign before a written offer, refusal to state whether the req is still funded.
Common disqualifiers per ClavePrep: treating every req as the same process across tracks; skipping the OA/skills gate; no timed practice before multi-round days; memorizing company trivia instead of rehearsing structured problem-solving; sending one generic résumé to every posting.
Recruiters respond well to candidates who ask: What are the remaining stages and who owns each? Is there an OA, take-home, or live skills round for this track? Typical calendar time from this stage to offer for similar software roles? Any hard constraints on location, shifts, travel, or start date? How should I prepare differently for campus vs lateral loops?
A 10-day prep plan ClavePrep outlines: Days 1–2: confirm funnel stages from the posting, clean résumé keywords via ATS checker; Days 3–5: drill the skills gate for your track under timed conditions; Days 6–7: timed mocks; Day 8: behavioral STAR set; Day 9: "Why this company?" plus software context for United States; Day 10: logistics checklist, light revision, sleep.
Before each round you should be able to answer yes to: I know the next stage and what it tests; my résumé matches the req's keywords; I can deliver two STAR stories in ~90 seconds; I've done at least one timed rehearsal for the skills gate; my logistics won't surprise HR; I have one thoughtful question for the interviewer.
After each round, within 24 hours: write down missed questions and drill those patterns once; update STAR stories if an interviewer probed a gap; confirm next stage and SLA with the recruiter; keep parallel prep warm via peer funnels so one delayed loop doesn't freeze your week. If the role closes, recycle practice (not the same generic résumé) into the next software target.
Where the work happened
Stainless listed "New York Office" as the location for every role on its final job board. The company's blog posts and press announcements consistently referenced a New York base, and the Series A funding announcement in December 2024 didn't mention additional physical sites. Built In confirms HQ New York with a hybrid workspace policy.
The public record shows no blog post, hiring page, or press release describing a dedicated hardware lab, integration bay, environmental test chamber, or satellite facility. Stainless built SDK generators, a docs platform, a language server, and CLI tooling, software products that shipped as code. Its development loop ran on CI pipelines, preview builds, and automated regression suites per the engineering blog.
The salary bands on the Zero G Talent board (ranging from $120k for a Technical Success Manager to $255k for an Engineering Manager) were published for New York–based roles. The roles posted (two engineering managers, a product designer, a recruiter, an account executive, and a technical success manager) suggested a conventional SaaS org structure with no hardware-focused titles.
As of the latest public information, the only verified workplace was the New York office named in every open requisition. The May 2026 announcement that Stainless is joining Anthropic may eventually change the physical footprint.
Who thrived there
Stainless's engineering blog walks through MCP architecture decisions, SDK generation pipelines, and the trade-offs of supporting dozens of target languages without letting the codebase fracture. The company shipped developer-facing infrastructure that other companies build on. OpenAI, Anthropic, Meta, Cloudflare, and Scale use Stainless to generate SDKs trusted by millions of developers.
The board's live roles (Engineering Manager, Engineering Manager SDKs, Product Designer, Account Executive, Recruiter, Technical Success Manager) clustered around that axis: either you built the generation engine, you shaped the developer experience, or you helped customers integrate it.
Employee feedback specific to Stainless (the API company, not the metal-fabrication firms sharing the name) is sparse in public forums. Glassdoor and Indeed reviews under "Stainless Works" and "Columbus Stainless" describe unrelated manufacturing operations. The company's own channels (blog, hiring docs, job postings) are the primary signal. They reveal a culture that treated documentation as product, expected engineers to own the full lifecycle from spec to generated artifact, and rewarded the ability to identify API surface issues before code lands.
The New York office (the only one listed across all 11 board roles) reinforced this workflow. If that loop (PR reviews, spec debates, dogfooding the SDKs they shipped) sounded like fun rather than friction, the fit worked.
Anthropic's SDK team now inherits that loop. The same customers (OpenAI, Meta, Cloudflare) now route through Anthropic. The roles, the bands, the bar: they didn't vanish. They migrated.
Working in frontier tech? Zero G Talent tracks the openings: see every open Stainless role, browse frontier tech jobs, the companies hiring, and the people building the field.