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Salary: USD 115,000 - 140,000 / annual
Pinwheel is a fintech infrastructure company building payroll connectivity and income data APIs for major financial services brands including Robinhood, DoorDash, Chime, Cash App, and American Express. The Integrations Platform (IP) team owns the core services, primitives, and tooling that power 1800+ integrations at scale.
You will join as a mid-level backend engineer to own well-scoped platform projects end-to-end. Your work will span three main areas: (1) platform-layer feature development including services, job systems, and framework improvements; (2) production reliability through on-call rotation, incident response, and dependency hygiene; and (3) integration-adjacent infrastructure such as proxy pool management, browser fleet operations, and identity/auth tooling.
Key responsibilities include:
- Own platform projects from scoping and design through shipping and production operation
- Work on reverse-engineering and scraping-adjacent problems, including integrations against systems that are moving targets; ship fixes, monitor for changes, and iterate
- Deliver reliability and performance improvements to shared infrastructure (proxy management, browser fleet, on-premises infrastructure, session/state management, latency-sensitive AWS code paths)
- Raise the bar for Integration Engineers through shared libraries, custom lint rules, internal tooling, and systemic code review
- Participate in on-call rotation, triage incidents, write postmortems, and ship preventative fixes
- Maintain dependency and security hygiene, including CodeQL findings, CVE remediation, and crypto/TLS updates
- Apply AI-assisted workflows thoughtfully to your own work and to tooling for other engineers
This is a hands-on builder role on a small, high-leverage team. The role is hybrid with 3 days per week required in the NYC office near Union Square.
QUALIFICATIONS:
- 3–5 years of backend integrations engineering experience building production services
- Computer Science degree or equivalent practical experience
- Strong Python skills (or comparable language with clear path to Python 3.10+)
- Production operations experience: on-call rotation, real incident debugging, shipping fixes under time pressure
- Working knowledge of AWS; hands-on experience with at least one of DynamoDB, S3, IAM, ECR, and operational instincts around latency, retries, throttling
- Solid systems-design fundamentals; ability to scope a small service, reason about failure modes, and defend design tradeoffs
- Meaningful integration of AI-assisted engineering (Claude Code, Copilot, agentic tooling) into your workflow with informed opinions on where it helps vs. hurts
- Comfort with concurrency and async patterns (threads, gevents/greenlets, async/await, or equivalent)
NICE TO HAVES:
- Browser automation: Selenium, Chrome DevTools Protocol (CDP), Playwright
- Browser fingerprinting: TLS fingerprinting (JA3), header/User-Agent analysis, captcha challenges (Turnstile, reCAPTCHA, Arkose), residential or datacenter proxy management
- Identity protocols: OAuth2, SAML, OIDC, MFA orchestration (Okta, Microsoft Entra, PingOne, Duo, ID.me)
- Production experience with FastAPI, Redis, Celery, gRPC
- Background in fintech, payroll, or regulated environments
About Pinwheel
Fintech — payroll connectivity and income data infrastructure for financial applications.
