Role overview

Senior Backend Developer

Requirements and responsibilities

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Tech stack

  • Languages: TypeScript, Node.js (18–22)
  • AWS: Lambda, DynamoDB, S3, SQS, EventBridge, Step Functions
  • Databases: DynamoDB, PostgreSQL
  • Frameworks / middleware: Serverless Framework, Middy
  • Libraries: Zod (schemas/validation), Winston (logging), AWS X-Ray (tracing), Luxon (dates)
  • Testing: Mocha, Sinon
  • Tooling: ESLint, Prettier, Terraform, GitHub Actions

your role at xpate:

  • Build and evolve Lambda-first microservices that handle real money flows and integrations.
  • Design REST APIs with type-safe schemas (Zod) and contracts that don’t rot.
  • Model data in DynamoDB (access patterns first) and use PostgreSQL when relational fits better.
  • Ship event-driven workflows with SQS/EventBridge/Step Functions: retries, idempotency, dead-letters, backpressure.
  • Ensure observability: structured logging (Winston), distributed tracing (AWS X-Ray), actionable metrics.
  • Write tests that protect releases (Mocha/Sinon), keep quality bars high, and reduce regressions.

we’re ready to meet you, if…

  • You have strong hands-on backend engineering experience in TypeScript / Node.js.
  • You have real AWS production experience — not “used Lambda once”, but built, operated, debugged, and fixed systems in production.
  • You have the ability to ship fast without trashing quality: clean code, predictable delivery, and solid engineering fundamentals.
  • You use AI tools daily to accelerate output (coding, debugging, analysis) and improve outcomes.
  • You have English at B2+ level (the team is English-speaking).

what working at xpate looks like:

  • A competitive salary (depending on what you bring).
  • Everything you need to succeed, with flexibility built in — from flexible hours and hybrid/remote work options to private health insurance and paid time off.
  • Top-of-the-line Apple gear to fuel your work.
  • A workspace designed for focus and collaboration.
  • Ownership of your work end-to-end, with the freedom to move fast and make a real impact.
  • Celebrated wins, opportunities to grow and a culture where voices are heard and chances to grow are ever-present.
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FocusBackend DevelopmentRole area
Seniority signalSeniorCandidate level
StackAWS, Node.js, PostgreSQLPrimary skills
Location10 accepted countriesEligibility

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