WebSphere / Liberty Engineer

Job description

**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** Your 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 our global community of experts leading the future of mainframe modernization. Experts who share knowledge openly and collaborate freely. In this role, you’ll design, build and maintain the high-volume business logic that runs on the mainframe. At the same time you’ll play a key role in refactoring legacy code to enable modern cloud and mobile applications to seamlessly interact with the mainframe’s core data. What you will do Manages Liberty runtime configuration and tuning Handles JVM settings, certs, keystore/truststore, and security configs Supports OAuth/SSO and application runtime hardening Resolves WAS/Liberty‑specific migration issues **Middleware Administration** - Install, configure, administer, and maintain IBM WebSphere Application Server (WAS) and WebSphere Liberty environments. - Perform server provisioning, patching, upgrades, and configuration management across development, test, and production environments. - Manage application deployments and environment configurations while ensuring platform stability and availability. **Application Support & Operations** - Provide L2/L3 support for business-critical applications hosted on WebSphere and Liberty. - Troubleshoot application, middleware, and infrastructure-related issues using logs, thread dumps, heap dumps, and diagnostic tools. - Perform root cause analysis (RCA) and implement corrective and preventive actions. **Performance & Capacity Management** - Monitor application server health, performance, and capacity utilization. - Tune JVM parameters, thread pools, JDBC connection pools, and server configurations to optimize performance. - Collaborate with development teams to resolve performance bottlenecks and improve application efficiency. **WebSphere Liberty Modernization** - Support migration initiatives from Traditional WebSphere Application Server to WebSphere Liberty. - Configure and support Java EE/Jakarta EE, MicroProfile, and Spring-based applications running on Liberty. - Assist in modernization efforts involving containerization and cloud-native deployments. **DevOps & Automation** - Support CI/CD pipelines and automated deployment processes. - Develop automation scripts using Shell, Python, or Ansible. - Work with container platforms such as OpenShift, Kubernetes, and Docker to deploy and manage Liberty workloads. **Security & Compliance** - Configure SSL certificates, LDAP integration, authentication mechanisms, and access controls. - Implement security best practices and remediation activities. - Participate in vulnerability assessments, audits, and compliance reviews. - Ensure Liberty server configurations align with security and operational standards. **Documentation & Collaboration** - Create and maintain operational runbooks, support documentation, and technical procedures. - Collaborate with application development, infrastructure, database, and cloud teams. Participate in change, incident, problem, and release management processes. **Who You Are** Required skills and experience - IBM WebSphere Application Server (WAS) - WebSphere Liberty / Open Liberty - Java, Java EE / Jakarta EE - Linux / Unix Administration - JVM Performance Tuning - SSL, LDAP, SSO Authentication - Jenkins, Git, Maven, Gradle - Shell Scripting or Python - Incident Management and Production Support Preferred skills and experience - OpenShift, Kubernetes, Docker - Spring Boot and MicroProfile - Monitoring Tools (Splunk, Dynatrace, AppDynamics, ELK, Grafana, Prometheus) - Infrastructure Automation using Ansible - Cloud Platforms (AWS, Azure, or IBM Cloud) Experience with enterprise application modernization initiatives **Being You** The “Kyn” in Kyndryl means kinship, which represents the strong bonds we have with each other, our customers and our communities. We focus on ensuring all Kyndryls feel included and we 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 we’re excited to see what you can bring. At Kyndryl, employee feedback has told us that our number one driver of employee engagement is belonging. That sense of belonging — being a valued, respected, trusted member of the team — is fundamental to our culture and fueling great experiences for our customers. This dedication to welcoming everyone into our company means that Kyndryl gives you the ability to thrive and contribute to our culture of empathy and shared success. That’s The Kyndryl Way. **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 are thoughtfully designed to support your financial, mental, physical, and social health—because we know that when you feel your best, you do your best. From your very first day, you’ll dive into impactful work that powers the systems our customers rely on every day. You won’t just contribute—you’ll make a difference, tackling meaningful projects that sharpen your skills and fuel your growth. We’re here to champion your journey. With powerful tools to chart your career path, personali