> Markdown version of [/jobs/ext/4692067-senior-java-j2ee-engineer-telecom-billing-api](https://www.wearedevelopers.com/jobs/ext/4692067-senior-java-j2ee-engineer-telecom-billing-api). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Java/J2EE Engineer - Telecom Billing & API - **Company:** Menzo Technologies Corp - **Location:** Denver, CO, United States - **Experience:** Expert - **Contract:** Contract - **Skills:** Java (Programming Language), Application Programming Interfaces (APIs), Artificial Intelligence, Amazon Web Services, Business Logic, Java Platform Enterprise Edition (J2EE), Design of User Interfaces, OAuth, Swagger, Next.js, YAML, Openapi, GitHub Copilot, ReactJS, Claude Code, Spring-boot, Software Security, Generative AI, Apigee, AI Coding Agents, Event Driven Architecture, Gitlab-ci, Apache Kafka, Front End Software Development, Claude, Api Design, Api Gateway, Restful APIs, Api Management, Docker, Microservices - **Published:** November 12, 2026 - **Apply:** https://www.dice.com/job-detail/445442b0-4d83-40a4-b36c-9702d649488a ## About the Role Candidates must have strong hands-on experience in Java/Spring Boot microservices and API development, along with meaningful experience in telecom billing, pricing, commercial business logic, rate plans, discounts, credits, promotions, and billing exceptions/overrides. Candidates should be able to understand business requirements and translate complex telecom pricing and billing logic into scalable technical solutions. Practical experience with Claude, Claude Code, GitHub Copilot, or similar AI-assisted development tools is highly preferred. ## Description Menzo Technologies Corp. has an urgent opening with our direct client for an experienced Senior Java/J2EE Engineer - Telecom Billing & API in Denver, CO. We are looking for suitable candidates with strong hands-on experience in Java/J2EE, Spring Boot, Microservices, REST APIs, Telecom Billing/Pricing, AWS, Kafka, and API Management., * Java / J2EE * Spring Boot & Microservices * REST API Development * OpenAPI / Swagger / YAML * Apigee / API Gateway * Telecom Billing & Pricing * Rate Plans, Discounts, Credits & Adjustments * Offers & Promotions * Billing Rules, Exceptions & Overrides * Kafka / Event-Driven Architecture * AWS * Docker & Kubernetes * GitLab / CI/CD * OAuth2 / JWT / API Security * Claude / Claude Code / GitHub Copilot or similar AI coding tools Preferred Skills: * NextJS / React * AI-assisted frontend/UI development * AWS Bedrock / Generative AI * Telecom/Wireless Billing or Charging platforms * Product Catalog / Order Management * Complex Pricing & Promotion Engines