Backend Engineer

Unico Connect is seeking a Backend Engineer to build and ship production backends for client web and mobile products. The role spans API design, database modelling, third-party integrations, and the discipline of writing tested, observable code. The position is well suited to early-career backend engineers with shipped production work in Node.js or Python and a willingness to deepen across the full backend stack.

Responsibilities

• Build REST and GraphQL APIs using Node.js (NestJS or Fastify) or Python (FastAPI or Django)
• Design and maintain PostgreSQL, MySQL, or MongoDB schemas with appropriate indexing
• Integrate third-party APIs such as Stripe, Twilio, SendGrid, and Razorpay
• Write unit and integration tests; target 80%+ coverage on critical paths
• Implement authentication, authorisation, and rate limiting using established patterns
• Deploy services to GCP or AWS through CI/CD pipelines
• Pair with Senior Backend Engineers on architecture decisions and code reviews
• Participate in incident response rotations for owned services
• Maintain technical documentation for owned services and integrations
• Contribute to internal backend templates, generators, and shared libraries

Qualifications

• Bachelor's degree in Computer Science, Engineering, or equivalent practical experience
• 1-3 years of backend engineering with shipped production work
• Strong Node.js with TypeScript or Python (FastAPI or Django)
• Production experience with PostgreSQL, MySQL, or MongoDB
• Working knowledge of Redis and at least 1 message queue (BullMQ, RabbitMQ, or SQS)
• Familiarity with Docker and at least 1 cloud (GCP or AWS)
• Solid testing fundamentals including unit, integration, and contract tests
• Comfort with Git, GitHub Actions, and CI/CD pipelines
• Working understanding of HTTP, REST, and basic distributed systems concepts
• Excellent written communication for pull request descriptions and design docs