Software Java Developer - Senior

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

Bring your specialist knowledge and experience to a company managing 50% of the world’s MIPS and play a critical role in our modernization mission. You’ll be in good company among a global community of experts leading the future of mainframe modernization, sharing knowledge openly and collaborating freely. In this role, you’ll design, build and maintain the high‑volume business logic that runs on the mainframe while refactoring legacy code to allow modern cloud and mobile applications to seamlessly interact with the mainframe’s core data.

What you will do

• Maintain Performance – Prevent decay and find efficiencies: Monitor the architecture and identify opportunities to optimize code to maintain and enhance mainframe performance.
• Debug and Test – Find and fix: Debug, troubleshoot, and analyze complex system interactions to keep mission‑critical applications running.
• Develop for the Future – Bridge the gap: As an instrumental player in modernization, you’ll extract business logic from legacy systems for migration or integration with cloud‑based services.

Who You Are

Required skills and experience

• Experience working as a software engineer on complex software projects.
• Excellent coding skills and solid development experience (Java, Springboot, Quarkus, GraphQL, Kafka, SpringBatch, Apache Flink) with debugging and problem‑solving skills.
• Software development methodologies, with demonstrated experience developing scalable and robust software.
• Experience in relational and NoSQL databases, data mapping, XML/JSON, REST‑based web services.
• Knowledge of architecture design – Microservices architecture, containers (Docker & AKS), messaging queues.
• Deep understanding of OOP and design patterns.

Preferred skills and experience

• Bachelor’s degree in Computer Science, related technical field, or equivalent practical experience.
• Certification in one or more of the hyperscalers (Azure, AWS, GCP) – or willingness to obtain such certifications with Kyndryl.
• Experience with DevOps tools and modern engineering practices.
• Knowledge of Azure components.

Being You

The “Kyn” in Kyndryl means kinship, representing the strong bonds we share with each other, our customers, and our communities. We focus on ensuring all Kyndryls feel included and welcome people of all cultures, backgrounds, and experiences. Even if you don’t meet every requirement, we encourage you to apply. We believe in growth and are excited to see what you can bring.

What You Can Expect

Your career with us isn’t just a job—it’s an adventure with purpose. We offer a dynamic, hybrid‑friendly culture that supports your well‑being and empowers you to grow. Our Be Well programs address financial, mental, physical, and social health so that you’re able to do your best work.

From your first day, you’ll dive into impactful work that powers the systems our customers rely on every day, contributing to meaningful projects that sharpen your skills and fuel your growth. We champion your journey with continuous feedback, personalized development goals, and access to cutting‑edge learning opportunities, including certifications from Microsoft, Google, and Amazon, coaching, and hands‑on experiences. You’ll be part of a culture that values empathy, restless learning, and a devotion to shared success.