Backend (Java) Developer

Senior Backend (Java) Developer

Experience:

Location :

Key Responsibilities

• Take end-to-end ownership of 2–3 assigned PTCS microservices, including App/Main Controller, ASM Controller, BSS Controller, Misc/Data Controller, Push Notification Controller, Email Notification Controller, Scheduler, and Exporter.
• Understand, document, maintain, and improve existing business logic across the microservices portfolio.
• Design, develop, and maintain scalable, secure, and high-performance REST APIs for frontend applications and external systems.
• Implement and manage Apache Kafka producers and consumers for push notification and email notification workflows.
• Integrate backend services with BSS, ASM, ATG, JID/RID, Firebase Cloud Messaging (FCM), email systems, and HashiCorp Vault.
• Write clean, maintainable, reusable, and well-tested code in accordance with coding standards and architectural guidelines.
• Perform code reviews and provide constructive technical feedback to improve code quality.
• Develop and maintain unit tests, integration tests, and regression test suites.
• Maintain and enhance Helm charts and Kubernetes deployment configurations for assigned services.
• Troubleshoot complex technical issues and provide L3/L4 support for production incidents.
• Contribute to Methods of Procedure (MOPs), test cases, test strategies, and technical documentation.
• Participate in architecture reviews and contribute to technical design decisions.
• Collaborate with cross-functional and geographically distributed teams across different time zones.
• Mentor junior developers and contribute to knowledge-sharing initiatives.

Mandatory Skills and Qualifications

• Bachelor's or Master's degree in Computer Science, Engineering, or a related field.
• Minimum 5 years of professional backend development experience.
• Expert-level proficiency in Java and Spring Boot, with hands-on experience building microservices.
• Strong knowledge of Apache Kafka, including producer and consumer implementation, topic management, and consumer group handling.
• Solid experience with MySQL, including complex SQL queries, transactions, indexing, and performance optimization.
• Hands-on experience with Docker and Kubernetes, including pod management, ConfigMaps, Secrets, and resource limits.
• Strong experience designing, developing, and consuming REST APIs.
• Familiarity with OpenAPI specifications and Swagger documentation.
• Experience implementing JWT, OAuth2, and token-based authentication and authorization.
• Hands-on experience with Firebase and FCM for push notification delivery.
• Proficiency in Git, version control, and feature branch workflows.
• Experience with CI/CD pipelines using Jenkins, GitLab CI, or ArgoCD.
• Practical experience developing and managing Helm charts.
• Strong understanding of Agile and Scrum methodologies.
• Excellent communication, analytical, and problem-solving skills.
• Ability to work independently, take ownership of deliverables, and meet strict deadlines.