Senior Backend Engineer (L3) - Payments
Core
Backend-heavy Full Stack Engineer owning critical payment flows, partner integrations, and client-facing dashboards for cross-border payments.
Role type
Senior IC backend engineer (payments/fintech)
Builds
Payment lifecycle systems, partner adapters, reconciliation hooks, and dashboard views for payment tracking and reporting.
Domain
Fintech / Cross-border payments / Financial infrastructure
Deliverable
production ML models | product features
Required skills
TypeScript, Node.js, REST API design, PostgreSQL, idempotency patterns, asynchronous processing (queues/workflows), React/Next.js, automated testing, object-oriented design, low-level design patterns.
Preferred skills
Cross-border payments/FX experience, double-entry ledger systems, regulated controls (safeguarding/monitoring), durable workflow engines (Temporal), observability (OpenTelemetry), stablecoin/digital-asset rails.
Responsibilities
Own backend of payment initiation, routing, lifecycle state, and settlement; build partner integrations and reconciliation hooks; design for correctness under failure; contribute to regulated controls and audit trails; build client-facing dashboard surfaces; instrument payment success rates and stuck-payment detection; mentor L1/L2 engineers; drive work to closure with Product/Operations/Compliance.
Seniority
Senior, hands-on IC
