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Handshake
Senior Software Engineer - Pay & Safety
Handshake
San Francisco•On-site•Salary•6-9 Yrs•Jul 7
Job description
Overview
Handshake was founded on a simple belief that everyone deserves a path to a great career, regardless of where they went to school or who they know. Today, we power 25 million job seekers, 1 million+ employers, and 1,600 educational institutions.
Responsibilities
- Design and build payout and money-movement systems on top of Payment Service Providers, including onboarding, KYC, country and payout-method support, webhook reconciliation, retries, and rate-limit handling, with zero-downtime rollout and full auditability for every state change.
- Build out a robust and flexible payment and incentives platform that powers how fellows are compensated, rewarded, and retained across every project we run.
- Build the Trust & Safety stack: KYC and re-verification flows, sanctions and fraud screening, ban and suspicious-account state transitions, and time-tracking audits over activity, time confirmations, and pay rates.
- Own operator tooling, including the Pay admin dashboard, ledger, and operations that let our ops team run pay weeks safely.
- Lead end-to-end on schema design, migrations, and backfills across Postgres and design rollouts that are safe to deploy.
- Set the bar for engineering practices on the squad through system design reviews, incident response, runbooks, and observability, and mentor other engineers through code review and architectural guidance.
Qualifications
- 6+ years of professional software engineering experience, with meaningful time spent owning production systems where correctness and uptime matter (payments, fintech, identity, fraud, infrastructure, or similar high-stakes domains).
- Strong system design fundamentals for highly reliable, zero-downtime, auditable, and resilient systems: expand-contract migrations, idempotency, retries and backoff, dual-writes and backfills, append-only audit logs, and reconciliation jobs.
- Deep proficiency with relational databases (PostgreSQL), data modeling, and schema evolution under load. You can defend why a given state is or isn't reachable.
- Strong backend skills in Ruby on Rails and/or TypeScript/Node, and willingness to work fluently across both.
- Comfort in React for operator and fellow-facing UI.
- Track record of leading technical projects end-to-end in ambiguous environments, with a bias toward shipping behind feature flags and verifying in production.
- Excellent communication and stakeholder management. You can partner with Ops, Finance, Legal, and Compliance and translate their requirements into system invariants.
- Track record of mentoring engineers and raising the engineering bar on a team.
- Handshake delivers benefits that help you feel supported—and thrive at work and in life.
- The below benefits are for full-time US employees.
- 🎯 Ownership: Equity in a fast-growing company
- 💰 Financial Wellness: 401(k) match, competitive compensation, financial coaching
- 🍼 Family Support: Paid parental leave, fertility benefits, parental coaching
- 💝 Wellbeing: Medical, dental, and vision, mental health support, $500 wellness stipend
- 📚 Growth: $2,000 learning stipend, ongoing development
- 💻 Office: Commuting support, free lunch, and gym in our SF office
- 🏝 Time Off: Flexible PTO, 15 holidays + 2 flex days
- 🤝 Connection: Team outings & referral bonuses
- Compensation Range: $225K - $250K
Nice to have
- Prior experience building production payments, payout, or money-movement systems
- Background in Trust & Safety, fraud, KYC/AML, sanctions screening, or identity verification at scale.