Backend Engineer (Integrations Platform)

Join Pinwheel, a fintech company revolutionizing the way consumers access and manage their financial data. As a Backend Engineer on our Integrations Platform team, you'll work on critical infrastructure that powers over 1800 integrations. You'll own platform projects end-to-end, ship reliability and performance improvements, and operate the platform in production. This is a hands-on builder role on a small, high-leverage team. Enjoy unlimited PTO, paid parental leave, and a hybrid-first work model.

• Own platform projects end-to-end, from scoping and design review through shipping and operation.
• Ship reliability and performance improvements to shared infrastructure (proxy management, browser fleet, on-prem infra, session/state management, latency-sensitive AWS code paths).
• Participate in the on-call rotation, triage incidents, write postmortems, and ship fixes that prevent recurrence.
• If you’re excited by the idea of having your work touch and impact the lives of hundreds of millions of consumers, Pinwheel is the place for you
• If you get stoked about building products alongside the biggest brands in the world, Pinwheel is the place for you
• If you want to join a scrappy, hustling team that is obsessed with defining the future of financial services, Pinwheel is the place for you!
• AI-enhanced development: you've meaningfully integrated AI-assisted engineering (Claude Code, Copilot, agentic tooling) into your workflow and have opinions about where it helps vs. hurts
• Production operations experience: you've been on an on-call rotation, debugged real incidents, and shipped fixes under time pressure
• Strong Python skills (or comparable language with a clear path to ramping on Python 3.10+)
• 3-5 years of backend integrations engineering experience building production services
• Computer Science degree or equivalent practical experience
• Comfort with concurrency and async patterns such as threads, gevents / greenlets, async / await, or equivalent
• Working knowledge of AWS. Experience with one of DynamoDB, S3, IAM, ECR, and the operational instincts that come with it (latency, retries, throttling)
• Possess solid systems-design fundamentals. You can scope a small service, reason about failure modes, and defend tradeoffs in design review
• Browser automation: Selenium, CDP (Chrome DevTools Protocol), Playwright
• Browser fingerprinting work: TLS fingerprinting (JA3), header / User-Agent analysis, captcha challenges (Turnstile, reCAPTCHA, Arkose), residential or datacenter proxy management
• Identity protocols at a working level: OAuth2, SAML, OIDC, MFA orchestration (Okta, Microsoft Entra, PingOne, Duo, <ID.me>)
• FastAPI, Redis, Celery, gRPC in production
• Fintech, payroll, or other regulated environments