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 NestJS backend
* Build and maintain backend services using Node.js, TypeScript, and NestJS
* Lead MySQL / 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, NestJS, TypeScript
* MySQL (Aurora), Redis
* AWS (ECS, Lambda, SQS, API Gateway, S3, CloudFront)
* Terraform, Grafana
Must have
* 5+ years commercial backend experience
* Strong Node.js + NestJS
* Solid MySQL optimisation experience in production environments
* Deep AWS hands-on experience
* Comfortable using AI dev tools day-to-day (Copilot / Claude / similar)