Senior Java/J2EE Engineer (Telecom Billing & API)

Quick Facts

Senior Java/J2EE Engineer — Telecom Billing & API (Onsite, Denver, CO; 5 days/week; 10+ years experience).

Description

Build scalable Java/J2EE, Spring Boot microservices and REST APIs for telecom billing and commercial systems. Translate telecom pricing and business logic—rate plans, discounts, credits, offers, promotions, billing rules, and exceptions—into robust technical solutions, including event-driven processing. Apply AI-assisted development practices using Claude/Claude Code (or similar) to accelerate coding, debugging, testing, and—desirably—UI work with NextJS.

Responsibilities

• Design and develop scalable Java/J2EE, Spring Boot and microservices applications.
• Design, develop, and integrate REST APIs using OpenAPI/YAML specifications.
• Work with API Management / API Gateway platforms such as Apigee.
• Develop and maintain business logic for telecom pricing, billing, and commercial systems.
• Implement pricing, rate plan, promotions, and complex billing rules including exceptions/overrides.
• Analyze business requirements and translate them into technical solutions.
• Develop event-driven solutions using Kafka and other messaging technologies.
• Build and deploy on AWS using Docker and Kubernetes.
• Implement CI/CD pipelines using GitLab and follow secure API development practices.
• Use Claude/Claude Code (or similar tools) for AI-assisted development.
• Collaborate on AI-assisted UI development, preferably with NextJS.
• Troubleshoot production issues and perform root-cause analysis across application, API, and integrations.
• Work in an Agile environment with product, architecture, business, and engineering teams.

Requirements

• Strong Java/J2EE development experience.
• Strong Spring Boot and microservices experience.
• Hands-on REST API design and development.
• Strong understanding of OpenAPI/Swagger and YAML.
• Experience with API Management/API Gateway platforms, preferably Apigee.
• Strong understanding of telecom billing and commercial business logic.
• Experience with pricing, rate plans, discounts, credits, adjustments, offers, and promotions.
• Experience handling billing/pricing exceptions and overrides.
• Strong analytical and mathematical/problem-solving skills.
• AWS experience.
• Docker and Kubernetes experience.
• CI/CD and GitLab experience.
• API security concepts such as OAuth2, JWT, and authentication/authorization.
• Practical experience with Claude/Claude Code, GitHub Copilot, or similar AI coding tools.

Benefits

Not specified in the provided posting.