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

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 adaptable 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.
- Ownershi

📌 Senior Backend Developer (España)
🏢 Xpate
📍 España