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Senior Backend Developer

SeniorRemote€7,300 – €9,800 / mo
Required Skills
TypeScriptNode.jsAWS LambdaDynamoDBPostgreSQLServerless Framework
Job Description
We’re hiring a hands-on Backend Developer to build and ship production serverless services for a fintech platform. 

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

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  • 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.

  • ]]>
  • 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).

  • ]]>
  • 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.

  • ]]> We're building the financial backbone of the future, where payments move freely and businesses thrive without barriers. If you want real impact, freedom to innovate, and work that drives change - xpate is the place for you.]]>
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