Senior Java/J2EE Engineer (Telecom Billing & API)

Quick Facts

• Role: Senior Java/J2EE Engineer (Telecom Billing & API)

• Domain: Telecom / Wireless / Billing / Pricing

• Work arrangement: Onsite, 5 days/week

• Experience: 8+ years

Description

Build and scale Java/J2EE microservices and REST APIs for telecom billing and pricing. Translate telecom business logic—rate plans, discounts, credits, offers, and promotions—into robust technical solutions. Use AI-assisted development tools (e.g., Claude/Claude Code) for coding, debugging, and testing.

Responsibilities

• Develop Java/J2EE services using Spring Boot and microservices

• Design and implement REST APIs using OpenAPI/Swagger (YAML)

• Build telecom billing and commercial business logic (billing rules, exceptions, overrides)

• Apply API management and security practices, including OAuth2 and JWT

• Work with AWS cloud, Docker, Kubernetes, and GitLab CI/CD

• Collaborate on event-driven architectures using Kafka

Requirements

• 8+ years of hands-on Java/J2EE development

• Strong experience with Spring Boot and microservices

• Strong REST API design and development experience

• Solid understanding of telecom billing and pricing logic (rate plans, discounts, credits, offers, promotions)

• Ability to translate telecom business requirements into scalable technical solutions

• Practical experience with Claude or Claude Code (coding, debugging, testing)

• Experience with AWS, Docker, Kubernetes

• CI/CD experience with GitLab

• API security experience using OAuth2 and JWT

Benefits

• Urgent contract role (onsite) in a telecom billing and API domain