Remote Serverless Backend Engineer - Fintech TypeScript & AWS

Xpate; United Kingdom; Hybrid; GBP 65,000 - 100,000; Full time

Benefits offered by this job

Hybrid/Remote work options

Private health insurance

Paid time off

Apple gear

Job summary

xpate is seeking a hands-on Backend Developer to build production serverless services for a fintech platform. You will work with TypeScript and Node.js (18–22) on AWS Lambda, DynamoDB, S3, SQS, EventBridge, and Step Functions to deliver reliable microservices.

You design REST APIs with type-safe schemas, model data for DynamoDB and PostgreSQL, and orchestrate event-driven workflows. You will ensure observability and quality through tests and tracing, with a collaborative, English-speaking team.

Qualifications

• Strong hands-on backend engineering experience in TypeScript/Node.js.
• Real AWS production experience—built, operated, debugged, and fixed systems in production.
• Ability to ship fast without compromising quality: clean code, predictable delivery, solid engineering fundamentals.
• Experience using AI tools daily to accelerate coding, debugging, and analysis.

Responsibilities

• 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 where relational fits.
• 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) and keep quality high.

Skills

TypeScript

Node.js

Tools

AWS Lambda

DynamoDB

S3

SQS

EventBridge

Step Functions

Serverless Framework

Middy

Zod

Winston

Luxon

ESLint

Prettier

Terraform

GitHub Actions

Job description

xpate is seeking a hands-on Backend Developer to build production serverless services for a fintech platform. You will work with TypeScript and Node.js (18–22) on AWS Lambda, DynamoDB, S3, SQS, EventBridge, and Step Functions to deliver reliable microservices.

You design REST APIs with type-safe schemas, model data for DynamoDB and PostgreSQL, and orchestrate event-driven workflows. You will ensure observability and quality through tests and tracing, with a collaborative, English-speaking team.