Java Backend Developer
BT Group
Work from Office
Full Time
Min. 2 yearsJob Description
Design Engineer Professional
Job Req ID: 59907
Posting Date: 10-July-2026
Function: Software Engineer
Location: Bengaluru
Salary: Competitive
About the role
We are looking for a strong Java Backend Developer with hands-on experience in building scalable enterprise applications using Java and Spring Boot. The role requires backend depth with working knowledge of frontend technologies such as React or Angular, along with exposure to CI/CD pipelines, cloud environments, and modern engineering practices.
You will work closely with cross-functional teams to design, develop, test, and deploy high-performance applications that are reliable, secure, and production-ready.
What you’ll be doing
• Design and develop scalable backend services using Java, Spring Boot, and Microservices architecture
• Build RESTful APIs and integrate with internal/external systems
• Contribute to frontend development using React or Angular where required
• Translate business requirements into technical design and implementation
• Write clean, maintainable, and testable code following best practices
• Implement data structures and algorithms to optimize performance and scalability
• Perform unit testing, integration testing, and code reviews
• Debug and troubleshoot production issues
• Work with DevOps teams to build and maintain CI/CD pipelines
• Participate in Agile ceremonies – sprint planning, stand-ups, retrospectives
• Ensure application security, performance tuning, and observability
• Contribute to architectural discussions and technology decisions
Essential Skills / Experience
• Strong hands-on experience in Java (8+)
• Expertise in Spring Boot, Spring MVC, Spring Data JPA
• Solid understanding of Microservices Architecture
• Strong foundation in Data Structures & Algorithms
• Experience building and consuming REST APIs
• Working knowledge of React or Angular (UI integration, API binding)
• Experience with relational databases (Oracle, MySQL, PostgreSQL) and SQL
• Familiarity with version control systems (Git)
• Experience in CI/CD tools (Jenkins, GitLab CI, GitHub Actions, etc.)
• Understanding of Docker/Kubernetes basics
• Experience in JUnit/Mockito or similar testing frameworks
• Knowledge of Agile/Scrum development methodology
Desirable Skills / Experience
• Exposure to Cloud platforms (AWS / Azure / GCP)
• Experience with Kafka / RabbitMQ / Event-driven systems
• Knowledge of NoSQL databases (MongoDB, Cassandra, Redis)
• Experience with API Gateway, Service Mesh
• Hands-on with Terraform / Infrastructure as Code
• UI skills in TypeScript, HTML5, CSS3
• Exposure to performance tuning & caching (Ehcache, Redis)
• Understanding of OAuth2, JWT, Spring Security
BT is the UK’s leading communications group and the holding company behind some of the country’s most recognised brands – including BT, EE, Openreach and Plusnet. Our purpose is as simple as it is ambitious: we connect for good. Our customers include consumers, small, medium and large businesses, public sector organisations and other communications providers.
BT’s role is about setting direction, unlocking value and creating the conditions for our brands and businesses to thrive.
Having come through the most capital-intensive phase of our fibre investment, our focus now is on what comes next – simplifying how we operate, using technology and AI to work smarter, and organising ourselves to serve customers better and grow sustainably. Group teams shape strategy, policy, brand, capital allocation and transformation, helping the whole organisation perform at its best.
We have a singular culture that unites all our people: we are customer-first challengers, who are committed, clear and connected. These behaviours unite us as one team to deliver for our colleagues, our customers, our stakeholders and the country. Joining BT means working at the heart of a business that matters to the UK, with the opportunity to shape decisions, influence outcomes and help set the future course of one of the country’s most important companies.
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