Senior Software Engineer - Java Backend

Who We Are At Kyndryl, we run and reimagine the mission-critical technology systems that drive advantage for the world’s leading businesses. We are at the heart of progress; with proven expertise and a continuous flow of AI-powered insight, enabling smarter decisions, faster innovation, and a lasting competitive edge. For our people—Kyndryls—that means doing purposeful work that powers human progress. Join us and experience a flexible, supportive environment where your well-being is prioritized and your potential can thrive. The Role Are you passionate about solving complex problems? Do you thrive in a fast-paced environment? Then there’s a good chance you will love being a part of our Software Engineering – Development team at Kyndryl, where you will be able to see the immediate value of your work. Core Java: Strong understanding of OOP (Inheritance, Encapsulation, Polymorphism, Abstraction) Unit Testing: JUnit 5, Mockito / MockK, Testcontainers (for integration tests), TDD preferred Spring Boot: Spring MVC (controllers, interceptors, filters), REST API, Spring Security (JWT-based auth), API Gateway, Microservices, AWS : (AWS EC2 basics, AWS Lambda (optional for hybrid setups), ECS or EKS (if containerized workloads), RDS (MySQL/Postgres/Aurora), DynamoDB, S3 integration, Caching with ElastiCache (Redis), Amazon SQS (FIFO, DLQ), SNS, IAM roles & policies As a Software Engineering - Developer at Kyndryl, you will be at the forefront of designing, developing, and implementing cutting-edge software solutions. Your work will play a critical role in our business offering, your code will deliver value to our customers faster than ever before, and your attention to detail and commitment to quality will be critical in ensuring the success of our products. Using design documentation and functional programming specifications, you will be responsible for implementing identified components. You will ensure that implemented components are appropriately documented, unit-tested, ...