Senior Node.js Backend Engineer
Contract: 12 months
Hours: UK/ CET
Rate: $300 USD per day
Location: Fully Remote
Overview
We’re looking for a Senior Backend Engineer to take ownership of core platform services, helping evolve an existing AWS-based system into a more scalable, modular architecture. This is a hands-on product backend role with real responsibility over performance, reliability, and system design.
What you’ll do
Migrate existing serverless logic into a modular Nest JS backend Build and maintain backend services using Node.js, Type Script, and Nest JS Lead My SQL / Aurora performance optimisation (queries, indexing, scaling, reliability) Improve system scalability and stability across AWS infrastructure
Contribute to observability (Grafana) and infrastructure-as-code (Terraform)
Work closely with product and engineering to ship high-quality backend features
Tech Stack
Node.js, Nest JS, Type Script
My SQL (Aurora), Redis
AWS (ECS, Lambda, SQS, API Gateway, S3, Cloud Front)
Terraform, Grafana
Must have
5+ years commercial backend experience
Strong Node.js + Nest JS
Solid My SQL optimisation experience in production environments
Deep AWS hands-on experience
Comfortable using AI dev tools day-to-day (Copilot / Claude / similar)
