Infrastructure Engineer – Mainframe z/OS Platform at Swedbank

ARE YOU INTERESTED TO WORK WITH ONE OF SWEDBANK’S CORE PLATFORMS? IN SWEDBANK YOU HAVE THE OPPORTUNITY TO: * Join a World-Class Mainframe Environment. * Work with a highly interesting and technically challenging platform. * Unleash your technical curiosity and passion. * Contribute to improve complex, mission-critical systems. * Grow and develop alongside highly skilled colleagues. If you enjoy solving intricate problems and working in an environment that values innovation and collaboration, this is the place for you. WHAT IS NEEDED IN THIS ROLE: * Master’s degree in information systems and/or equivalent work experience. * Highly skilled in MQ on z/OS and and a great benefit if you have good knowledge in IMS (including DL/1) in and IBM Integration Bus as well. * We believe that you are structured, proactive, enjoys troubleshooting, analysing problems, and finding solutions and thrive in environments where reliability and precision are critical. * Deploy releases and handle configuration and change activities across environments. Perform lifecycle management, including upgrades and version testing. * Act as a subject matter expert (SME) for system behavior and integrations. * You are comfortable collaborating with both technical and non‑technical stakeholders. * Participate in Agile planning, prioritization, and delivery activities * Very good communication skills in English (both written and verbal). WITH US, YOU CAN EXPERIENCE: * Personal and professional growth through self-leadership and continuous development. * Meaningful work that positively impacts our workplace, our customers, and society. * An open and collaborative culture that encourages cross-functional teamwork and provides networking opportunities. * A supportive and inclusive environment that promotes a balanced and sustainable work-life, with flexible working conditions when suitable for the role. * Benefits such as our share based reward program Eken, company pension plan, employee offer for banking products, health insurance. "JOIN OUR TEAM AND... become part of a team of professional colleagues, who work together to deliver challenging projects, stable and secure operations and by that contribute to Swedbank's position in society." Cecilia Kåhrström, your future leader WE LOOK FORWARD TO RECEIVING YOUR APPLICATION BY 07.08.2026.  Location: Stockholm Recruiting manager: Cecilia Kåhrström We may begin the selection during the application period, so we welcome your application as soon as possible. We have made our choice regarding recruitment media and therefore kindly decline contact with ad sellers or sellers of other recruitment services. Employment in this position may involve placement in a security class or, alternatively, a security screening without placement in a security class. Therefore, a security assessment with a background check may be conducted in accordance with the Security Protection Act (2018:585). Swedbank does not discriminate anybody based on gender, age, sexual orientation or sexual identity, ethnicity, religion or disability – everybody is welcome. #LI-Hybrid #LI-MA1

About the Company At Avaron, you get the security of permanent employment combined with the variety of working at different customers. We place specialists across everything from tech, IT and industry to project management and business support – and whatever the assignment, you have a consultant manager who is there for you and your development. About the Role You will take technical ownership of migration and stabilization work across business-critical integrations in an insurance and pension platform. The environment combines legacy services, hybrid components, and operationally sensitive flows where safe execution, rollback readiness, and minimal business disruption are central to success. This is a hands-on individual contributor role where you work independently in complex legacy environments while collaborating closely with infrastructure, DBA, MQ, and operations teams. You will help move critical integrations forward without compromising stability, and your decisions will have a direct impact on production reliability. It is an exciting opportunity if you enjoy solving difficult migration challenges in a regulated environment where legacy technology coexists with modern APIs. Job DescriptionYou will execute migration activities across legacy and modern integration components. You will validate environment parity and remove runtime blockers ahead of cutover. You will diagnose and resolve production-critical issues in services, queues, and integrations. You will build and run end-to-end verification and rollback tests to support safe releases. You will create clear runbooks and deployment notes to enable repeatable execution. You will work with infrastructure, database, MQ, and operations specialists to secure stable migration outcomes. You will ensure acceptance criteria are met before go or no-go decisions are taken. RequirementsStrong experience with C# and .NET Framework 4.x. Experience maintaining and migrating WCF, SOAP, and ASMX services. Hands-on experience with IIS deployment and troubleshooting, including application pools, bindings, and configuration. Experience with Windows Services and Task Scheduler based batch operations. Experience troubleshooting SQL Server and handling secure configuration. Knowledge of IBM MQ integration fundamentals, including connectivity, queue diagnostics, and channel diagnostics. Experience with PowerShell automation for deployment, verification, and operations. Experience working with TFS and Git based workflows and collaborating around CI/CD pipelines. General knowledge of PKI. You have delivered migrations in legacy enterprise systems with low incident impact. You have direct production experience from IIS and WCF or ASMX cutovers. You can show practical MQ troubleshooting and backlog handling under pressure. You have worked with rollback strategy and execution in real releases. You balance migration speed with operational safety. Nice to haveExperience with C or C++ maintenance in Windows service environments. Knowledge of mainframe-adjacent integration patterns such as EBCDIC and file bridge patterns. Exposure to containers and Kubernetes in environments where legacy services coexist with modern APIs. Experience with production observability and incident response in regulated environments. Experience with legacy security hardening, including service accounts and encrypted settings portability. What We OfferPermanent employment at Avaron AB Occupational pension Wellness allowance of SEK 5,000 per year Application Selections are made on an ongoing basis – apply as soon as you can.