API Feature Developer (Java+Nodejs)

Role Purpose 

The API Feature Developer will design, develop, and maintain high-performing, secure, and scalable APIs that power the client's Mobile Application (the Super App) features and UX/UI. This role focuses on implementing new features, optimizing existing APIs, and ensuring seamless integration with backend systems and third-party services to deliver exceptional customer experiences. 

Key Responsibilities 

1. API Design & Development 

• Design and implement RESTful and GraphQL APIs for Super App features (e.g., recharge, bundle purchase, Mobile Money transactions, account management).
• Integrate APIs with internal systems (billing, CRM, identity, catalog) and external partners. 
• Implement new API features (programmable code) aligned with the client's digital roadmap and customer experience goals. 

2. Cross-Functional Collaboration

• Collaborate with product owners, UX/UI designers, API Feature Analysts, and solution architects to translate business requirements into technical programmable specifications. 

3. Security & Performance 

• Ensure APIs meet performance benchmarks (low latency, high throughput) and adhere to the client's security standards (OAuth2, JWT, encryption) with their requisite code coverage. 
• Conduct vulnerability assessments and apply secure coding practices. 

4. Testing & CI/CD 

• Develop unit, integration, and performance tests for APIs. 

Support automated testing and CI/CD pipelines for rapid, reliable deployments. 

5. Documentation & Governance 

• Maintain API documentation (Swagger/OpenAPI) and version control. 
• Ensure compliance with the client's architecture and governance frameworks. 

6. Observability & Optimization 

• Implement observability (logging, metrics, tracing) for API health monitoring. 
• Optimize API performance and scalability based on usage analytics. 

Required Qualifications & Experience 

• Bachelor's degree in Computer Science, Software Engineering, or related field. 
• 5+ years in backend/API development, preferably in telecom or digital services. 
• Strong experience with Java/Spring Boot, Quarkus, Node.js, or similar frameworks. 
• Proficiency in RESTful API development with TMF standards, GraphQL, and API Gateway solutions. 
• Hands-on experience with OAuth2, JWT, and secure API practices. 
• Familiarity with microservices architecture, containerization (Docker/Kubernetes), and cloud platforms (AWS/Azure). 
• Deep knowledge in CI/CD pipelines, Git, Swagger/OpenAPI, Postman and automated testing frameworks.