Senior NestJS developer - Full-time - EU/APAC

Senior NestJS Backend Engineer

About the role

Build and scale production-grade NestJS microservices that power our mobile application. You’ll own APIs, data models, and service reliability across multi-region AWS and Kubernetes.

Responsibilities

• Architect and implement modular NestJS microservices with clean boundaries and high reliability.
• Design and optimize PostgreSQL/AWS Aurora (indexes, replication, sharding, query tuning).
• Integrate with Kafka for inter-service communication (producers/consumers, idempotency).
• Deploy and operate services on Kubernetes (EKS), including auto-scaling and rollbacks.
• Build CI/CD with automated testing (unit/integration/e2e), blue/green & canary strategies.
• Implement security, rate limiting, authN/Z, and API versioning; define SLIs/SLOs with proper monitoring.
• Collaborate closely with mobile/web teams to ensure smooth API and contract alignment.
• Deliver clear estimations and plans; optimize for performance, availability, and cost.
• Own model inference integrations: package & invoke CPU models on AWS Lambda; familiarity with GPU server deployments (e.g., Runpod serverless) is a plus.

Requirements

• 5+ years backend engineering; strong expertise with NestJS + TypeScript in microservice architectures.
• Proven experience building and scaling distributed systems in production.
• Hands-on with PostgreSQL & AWS Aurora.
• Working knowledge of Kafka usage from application side.
• Deep experience with AWS and Kubernetes (EKS/GKE/AKS) and container best practices.
• Exceptional debugging and problem-solving in distributed environments.

Nice to Have

• GraphQL (Apollo/Federation), caching (Redis), and API gateway patterns.
• Monitoring/observability (Prometheus, Grafana, ELK).
• Terraform / IaC and GitOps (Argo CD/Flux).
• Background in high-scale consumer mobile backends.