Back End Developer

Systems Limited is looking for a seasoned backend engineering professional to design and build resilient, secure, and scalable microservices powering enterprise-grade digital platforms.

Location
: Lahore, Islamabad, Karachi

Requirements

• 6+ years of backend engineering experience; 4+ years of NestJS and TypeScript in production environments.
• Strong Docker and docker-compose skills, including multi-stage builds, health checks, and local multi-service setups.
• Proven experience integrating with enterprise REST APIs using contract-first development (OpenAPI/Swagger).
• Strong microservice design expertise, including domain boundaries, API versioning, idempotency, retries, and eventual consistency.
• Hands-on experience with API authentication and authorization in distributed systems (OAuth2, JWT, token-based flows).
• Experience building and consuming webhooks and callbacks, including HMAC/signature validation, replay pr...