Senior Java Developer – Backend Scalability

Vertex Analytics

Freelance · Remote · Flexible hours

About the role

Vertex Analytics is expanding its B2B platform with a multi‑tenant feature set. We need a Java Developer to design, implement, and ship core services that isolate tenant data while preserving performance. You will work closely with product and QA to ensure the new capabilities integrate seamlessly.

Key responsibilities

• Architect and develop multi‑tenant microservices using Java and Spring Boot
• Implement tenant isolation, configuration, and routing logic
• Write unit, integration, and contract tests to guarantee reliability
• Collaborate with DevOps to containerize services and support CI pipelines
• Document APIs and service contracts for internal consumers

Must-have skills

• Strong Java expertise with Spring Boot
• Hands‑on experience building microservices
• Understanding of multi‑tenant architecture patterns
• Proficient in RESTful API design and security

Nice to have

• Kubernetes or Docker experience
• Familiarity with PostgreSQL or NoSQL databases
• Knowledge of CI/CD tools such as Jenkins or GitHub Actions