Senior Java/J2EE Engineer - Telecom Billing & API

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 highly skilled candidates with strong hands-on experience in Java, Spring Boot, Microservices, REST API development, and telecom billing/pricing systems. Candidates should also have practical experience using AI-assisted development tools such as Claude or Claude Code., · Java / J2EE Development

· Spring Boot & Microservices

· REST API Design & Development

· OpenAPI / Swagger / YAML

· API Management & Apigee

· Telecom Billing & Commercial Business Logic

· Pricing, Rate Plans, Discounts, Credits & Promotions

· Billing Rules, Exceptions & Overrides

· AWS Cloud, Docker & Kubernetes

· CI/CD & GitLab

· API Security - OAuth2, JWT

· Claude / Claude Code / GitHub Copilot

· Kafka & Event-Driven Architecture

Preferred:

· NextJS / React

· AI-Assisted Frontend & UI Development

· AWS Bedrock / Generative AI

· Telecom Billing, Charging & Product Catalog Platforms

· Order Management & Customer Management Systems

· Complex Pricing and Promotion Engines, Candidates must have strong hands-on experience in Java, Spring Boot, Microservices, and REST API development, along with a solid understanding of telecom billing, pricing, rate plans, discounts, credits, offers, and promotions.

The ideal candidate should understand underlying telecom business logic and translate business requirements into scalable technical solutions rather than simply developing APIs based on predefined specifications.

Practical experience with Claude, Claude Code, or similar AI-assisted development tools is important, particularly for coding, debugging, testing, and frontend development.