Sr. Backend API Developer

Inabia is seeking a Senior Backend API Developer to design, build, and maintain scalable, production-grade enterprise backend services and microservices. The ideal candidate brings deep expertise in Java or Python, hands-on experience with cloud-native architectures, and a strong command of modern DevOps and CI/CD practices. Experience in the Telecommunications domain and familiarity with TM Forum Open APIs is a strong plus.

Responsibilities

• Design, develop, and maintain scalable backend services and microservices for enterprise-grade applications
• Build secure, high-performance REST APIs and integration layers connecting internal and external systems
• Develop cloud-native applications and services leveraging containerization and orchestration platforms
• Participate in architecture discussions and contribute to technical design decisions
• Implement robust automated unit tests, integration tests, and API validation frameworks
• Review code, enforce coding standards, and mentor junior developers through peer reviews and technical guidance
• Troubleshoot complex production issues and perform root-cause analysis
• Monitor application health, identify bottlenecks, and drive performance optimization initiatives
• Collaborate with Product Owners, Architects, DevOps & QA teams, and business stakeholders
• Support CI/CD automation and deployment processes across development, testing, and production environments
• Contribute to technical documentation, API specifications, and operational runbooks
• Work effectively across distributed global teams and time zones

Key Qualifications

• Proficiency in Java (Spring Boot preferred) or Python (FastAPI, Flask, Django, or equivalent)
• RESTful API design and development, API Gateway patterns, OpenAPI/Swagger
• Strong Linux/Unix administration and troubleshooting skills
• Docker, Kubernetes, and Helm
• Version control with Git/GitHub/GitLab/Bitbucket and automated build, test, and deployment pipelines
• Shell/Bash scripting
• Microservices architecture and enterprise system integrations
• Event-driven architectures and message brokers (Kafka, RabbitMQ, or equivalent)
• Relational and NoSQL databases
• Cloud platforms: AWS, Azure, and/or GCP
• Unit testing frameworks (JUnit, PyTest, Mockito) and test automation
• API testing tools such as Postman
• Code quality tools (SonarQube preferred) and static code analysis
• Monitoring and observability tools: Grafana, Prometheus, ELK
• Design Patterns, SOLID Principles, performance tuning, high availability, and scalability design

Preferred Qualifications

• Experience implementing Telecom OSS/BSS integrations
• Knowledge of TM Forum Open APIs (TMF620, TMF641, TMF622, TMF633, TMF638, TMF640, etc.)
• Experience with Kubernetes-based deployments in production environments
• Familiarity with Infrastructure as Code tools (Terraform, Ansible, etc.)
• Understanding of distributed systems and cloud-native architecture patterns
• Working knowledge of Golang