Senior Backend Engineer — Serverless Fintech, Remote

Xpate; United States; Hybrid; USD 120,000 - 180,000; Full time

Benefits offered by this job

Private health insurance

Paid time off

Apple gear

Hybrid/Remote options

Job summary

xpate is hiring a hands-on Backend Developer to build and ship production serverless services for a fintech platform. You’ll work with Lambda-first microservices, type-safe REST APIs, and data modeling in DynamoDB and PostgreSQL.

Use AWS tools, Serverless Framework, and a modern toolchain to ensure observability, tests, and quality while shipping features quickly in a hybrid/remote setup.

Qualifications

• Hands-on backend engineering experience in TypeScript/Node.js.
• Real AWS production experience: built, operated, debugged, and fixed systems.
• Ability to ship fast without sacrificing quality with clean code and solid fundamentals.
• Daily use of AI tools to accelerate coding and debugging.
• English at least B2+ level in a team environment.

Responsibilities

• Build and evolve Lambda-first microservices that handle real money flows and integrations.
• Design REST APIs with type-safe schemas and contracts that don’t rot.
• Model data in DynamoDB first, using PostgreSQL where relational fits.
• Ship event-driven workflows with SQS/EventBridge/Step Functions: retries and idempotency.
• Ensure observability: structured logging (Winston) and tracing (AWS X-Ray).
• Write tests that protect releases (Mocha/Sinon) and reduce regressions.

Skills

TypeScript

Node.js

Backend development

REST API design

English communication

Tools

AWS Lambda

DynamoDB

S3

SQS

EventBridge

Step Functions

Serverless Framework

Middy

Zod

Winston

AWS X-Ray

Luxon

Mocha

Sinon

ESLint

Prettier

Terraform

GitHub Actions

Job description

xpate is hiring a hands-on Backend Developer to build and ship production serverless services for a fintech platform. You’ll work with Lambda-first microservices, type-safe REST APIs, and data modeling in DynamoDB and PostgreSQL.

Use AWS tools, Serverless Framework, and a modern toolchain to ensure observability, tests, and quality while shipping features quickly in a hybrid/remote setup.