Java Backend Developer

Description

Job Summary: We are seeking a Java Backend Developer to implement REST microservices, integrate APIs, ensure quality, and collaborate technically on technology projects. Key Highlights: 1. Development and implementation of REST microservices following OpenAPI 3.0 2. API integration and security with Keycloak and compliance with guidelines 3. Technical collaboration, code reviews, and documentation Join our team! The future is built with talent. At Indra Group, we are looking for yours. We are seeking a **Java Backend Developer** **Requirements:** * Degree in Systems Engineering, Computer Science, Electronics, or related fields * Preferred: Java certification (OCA / OCP), Spring Professional, AWS or Azure Developer * Valued: Training in TM Forum Open API Fundamentals or Frameworx * English level: Technical intermediate — ability to read TM Forum documentation in English * General backend development experience: 3+ years * REST API development (any domain): 3+ years * TM Forum API implementation: 1+ project * Experience in Telecom industry (BSS/OSS): Preferred * Working with OpenShift or Kubernetes: Basic * Integration with Keycloak / Identity Providers: Basic * Experience with Oracle SID: Preferred * Agile methodologies (Scrum / Kanban): Basic **Job Responsibilities:** * Development and Implementation * Implement REST microservices following OpenAPI 3.0 contracts * Code TMF endpoints: CRUD operations, filters (fields, offset, limit), pagination, and TMF error handling * Implement data models in Oracle / PostgreSQL following TM Forum SID mapping * Develop business logic for each TMF resource: validations, state rules, lifecycle management * Implement Hub/Listener pattern for asynchronous TMF event publishing and consumption * Integration and Security * Integrate microservices with Keycloak: OAuth 2.0 flows, OIDC, JWT token validation, and resource-level scope enforcement * Implement integration between project TMF APIs: synchronous calls and integration error handling * Apply operator security guidelines: TLS encryption, input validation, role-based access control * DevOps and Quality * Create and maintain Dockerfiles and configuration files for deployment on OpenShift / Kubernetes * Configure CI/CD pipelines in Bitbucket Pipelines or Jenkins: build → test → static analysis → deploy * Write unit tests with minimum 80% coverage (JUnit / pytest) * Fix defects identified during QA cycle and participate in integration testing * Technical Collaboration * Interpret and apply OpenAPI contracts defined by the Application Architect without deviating from the TMF standard * Participate in code reviews and knowledge transfer sessions * Document code and maintain an organized Bitbucket repository (branching strategy, semantic commits) **Benefits:** * What do we offer? * 100% covered EPS health insurance * Life Insurance (Law-mandated) * Certification Program * Well-being services (psychologist, nutritionist) * Corporate discounts * Access to continuous learning platform (Udemy) * Collaborative culture and real growth opportunities * Large-scale technology projects with leading clients. Employment Type: Full-time Application Question(s): * What is your expected gross salary in Peruvian soles? Work Location: Hybrid in La Victoria, Lima