How You'll Help Us Keep Climbing (Overview & Key Responsibilities)
Role Summary
A Senior Java Developer designs, develops, and maintains high-performance, scalable, and secure backend systems that support business-critical applications. They will collaborate creatively across teams to deliver robust solutions and continuously improve performance, reliability, and maintainability. This role requires strong analytical skills, hands-on experience with asynchronous programming, and proficiency in Kafka for event-driven architectures. The ideal candidate will proactively identify inefficiencies and take initiative to streamline development processes and improve overall system architecture.
Key Responsibilities
- Design and develop high-performance, asynchronous Java applications leveraging frameworks such as Spring Boot.
- Implement and maintain event-driven microservices using Apache Kafka for messaging, streaming, and data integration.
- Build, test, and maintain RESTful and Async APIs ensuring reliability, scalability, and maintainability.
- Collaborate with DevOps teams to support CI/CD pipeline integration (preferably Jenkins, GitLab CI, or similar).
- Apply best practices in code quality, testing, and performance optimization across the software lifecycle.
- Develop and maintain unit, integration, and performance tests using frameworks like JUnit, Mockito, and Gatling.
- Work closely with architects to design systems following microservices, event-driven, and cloud-native paradigms.
- Perform root cause analysis and debugging of complex production issues to ensure stability and uptime.
- Participate in code reviews, technical discussions, and contribute to architectural decisions.
- Stay current with evolving Java ecosystem trends and emerging technologies such as reactive systems, cloud-native tools, and Kafka stream processing.
- Document designs, workflows, and technical specifications for internal and cross-functional teams.
- Mentor junior developers, fostering knowledge sharing and technical excellence.
What You Need To Succeed (Minimum Qualifications)
- Bachelor's degree in Computer Science, Information Technology, or related technical field.
- 4+ years of professional experience in Java application development.
- Strong proficiency with Java 11+ and frameworks such as Spring Boot or Spring Cloud
- Proven experience developing and consuming asynchronous APIs (REST, WebFlux, or Reactive Messaging).
- Hands-on experience implementing and managing Apache Kafka for messaging, streaming, and integration.
- Solid understanding of microservices architecture and distributed systems.
- Experience with CI/CD pipelines, Git-based workflows, and automated testing.
- Familiarity with containerization (Docker) and orchestration (Kubernetes).
- Knowledge of SQL and NoSQL databases (PostgreSQL, MongoDB, Redis, etc.).
- Excellent problem-solving and debugging skills.
- Strong communication skills — both written and verbal — with the ability to convey technical concepts clearly.
- Ability to collaborate in cross-functional teams and adapt to changing priorities.
Behavioral Competencies
- Ability to produce high quality results, work in a collaborative environment by embracing diverse perspectives and with a solution-based approach.
- Adapt communication clearly and concisely based on team dynamics and expresses thoughts & ideas effectively.
- Ability to engage effectively with peers and stakeholders to build trust and reliable working relationships.
- Ability to understand business processes, implement innovative solutions, guide juniors on continuous improvement by constantly updating oneself on current technology & trends.
- Inquisitive to understand customer and business expectations while creating value addition on technical solutions
What Will Give You a Competitive Edge (Preferred Qualifications)
- Experience with Kafka Streams, Schema Registry, and Avro/Protobuf message serialization.
- Familiarity with cloud deployment models, especially AWS (Lambda, ECS, EKS, S3, CloudWatch).
- Hands-on experience with AWS MSK.
- Hands on Experience With Rest API development, Soap WSDL experiment.
- Hands on Experience with OpenAPI standards (OAS) and AsyncAPI standards.
- Understanding Enterprise Integration Application patterns
- Understanding of DevSecOps principles and secure coding practices.
- Prior experience contributing to or leading major system rollouts or migrations.
- Experience in loyalty and/or airline environments is a plus.
About The Company
What started as a humble, little aerial crop-dusting operation called Huff Daland Dusters in 1924 has now grown into the U.S. global airline leader in safety, innovation, reliability, and customer experience. Headquartered in Atlanta, Georgia, Delta Air Lines is known for its operational excellence and award-winning customer service.
Powered by our employees worldwide, Delta has led the airline industry in operational excellence for a decade while maintaining our reputation for award-winning customer service. With our mission of connecting the people and cultures of the globe, Delta strives to foster understanding across a diverse world and serve as a force for social good.
In 2026, Delta Air Lines continued to earn global recognition for its performance, culture and operational excellence. Delta was named to Glassdoor's 2026 Top 100 Best Places to Work list for the ninth time, standing as the only airline recognized. Delta also secured the 11th spot on Fortune's World's Most Admired Companies list, marking its 13th consecutive year earning this distinction. Delta was also recognized by Cirium as the top on-time airline in North America for the fifth consecutive year, underscoring its unwavering commitment to reliability and customer experience.
About The Delta Technology Hub (DTH), Bangalore
The DTH is one of Delta Air Lines investments in world-class business capabilities and technology aimed at transforming how Delta Air Lines operates and provides world-class travel experiences to its customers through innovation and cutting-edge methodologies. By continuously reimagining processes and driving technology-led transformation, the Delta Technology Hub plays a pivotal role in Scripting The Future Of Aviation. The organization is certified by the Great Place to Work Institute (India). The Delta Technology Hub was a finalist for the iVolunteer Awards 2024/2025 in the Leader in Employee Volunteering category. This nomination highlights our remarkable volunteering initiatives and the outstanding practices we implement to encourage and support our employee volunteering program.
For more information, please visit www.deltatechhub.com
Why join
- Technology is a key enabler of the differentiated services that Delta provides. At the DTH, you get the opportunity to work on projects with a significant impact on business outcomes and customer experience.
- Deepen your knowledge by taking part in multifaceted learning and development programs –exposure to extensive internal and partner repositories, institutional affiliations, and industry SIG (Special Interest Groups) partnerships.
- Immerse yourself in an employee-centric culture.
- Develop deep and broad business acumen on airline operations while retaining focus on cutting-edge technology driven solutions.
- Avail a full range of benefits that support you and your family: Medical Insurance, Transportation to and from the DTH office, Complementary Cafeteria Meals, Special Travel opportunities and Travel Privileges, Car Lease Program, Paid time off, Parental Benefits and National Pension Scheme.
