API Integration Backend Engineer

Role Overview

Build, optimise and maintain scalable microservices and backend API layers across complex digital ecosystems. Convert integration requirements into resilient, high-throughput backend services while working alongside technical leads, integration architects and DevOps engineers.

Responsibilities

• Design, code and deploy high-availability RESTful APIs, gRPC services and event-driven microservices.
• Develop reusable and secure server-side logic, business rules, middleware and asynchronous request handling.
• Write SQL and NoSQL queries, optimise data-persistence schemas and configure distributed caching.
• Enforce API security standards covering OAuth 2.0, JWT authentication, payload encryption, rate limiting and CORS.
• Monitor, profile and tune backend performance and troubleshoot data bottlenecks, memory leaks and high-concurrency issues.
• Integrate event-driven messaging brokers for real-time, decoupled communication.
• Automate unit, integration and API-contract tests within CI/CD pipelines.
• Maintain structured API documentation using OpenAPI specifications.
• Partner with front-end and mobile developers to optimise JSON and data payloads.
• Participate in stand-ups, code reviews and technical-refinement sessions.

Desired Experience and Qualification

• National Diploma or Bachelor's degree in Computer Science, Software Engineering, Information Technology or related field.
• Three to five years' commercial backend-engineering experience building production APIs and microservices in modern cloud environments.
• Experience with Java, Node.js, Go or Python backend stacks.
• Relevant cloud or developer certification is advantageous.
• Experience in IT Consulting or Telecommunications is advantageous.
• Deep knowledge of API design, REST principles, microservices and event-driven streaming.
• Proficiency with relational and non-relational databases and cache-management layers.
• Experience with containerisation and CI/CD deployment pipelines.
• Strong problem-solving and technical-communication skills.