Senior Mainframe Developer

SEB

Cobol-developer at SEB, a progressive tech company. Delivering business-critical solutions and collaborating with stakeholders to support financial operations.

Posted 5/28/2026full-timeStockholm • 🇸🇪 SwedenSeniorWebsite

Tech Stack

Tools & technologies

SQL

About the role

Key responsibilities & impact

Play a key part in SEB’s transformation journey, helping to future-proof one of the core enabling solutions for products and arrangements
Join a centralized team with end-to-end responsibility for the development, maintenance, and support of the Product Master Data Management solution
Work in close collaboration with a broad network of stakeholders from many different areas
Responsible for the full lifecycle of applications, from development and continuous improvement to maintenance and support

Requirements

What you’ll need

Extensive experience in COBOL development, preferably within large-scale financial or enterprise environments
Deep expertise in COBOL and mainframe ecosystems, including SQL, JCL, DB2, OPC, and IDz, with the ability to make sound architectural and technical decisions
A strong sense of ownership and accountability, driving the design, documentation, and development of robust, high-quality solutions that stand the test of time
Proven experience taking end-to-end responsibility for the full software development lifecycle, including long-term support, maintenance, and continuous improvement
The ability to operate effectively in a fast-paced, business-critical environment, where you support an enabling area with around 50 dependent systems. You stay calm under pressure, are adaptable, and lead by example when it’s time to roll up your sleeves
A collaborative and mentoring mindset, actively sharing knowledge and contributing to the development of colleagues and the broader team
A forward-looking and open mindset, continuously seeking to learn, evolve, and adopt new ways of working or areas of expertise
Strong communication and stakeholder management skills, allowing you to engage confidently and constructively with people across different roles, levels, and technical backgrounds. You value transparent dialogue and continuous feedback
A genuine passion for IT development, combined with strong analytical thinking and the ability to solve complex problems with a holistic perspective
Fluency in English is required, while Swedish is considered a strong advantage.

Benefits

Comp & perks

Friendly and welcoming culture
Extensive training and learning opportunities
Work-life balance

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

COBOLSQLJCLDB2OPCIDzsoftware development lifecycleapplication maintenanceapplication supportarchitectural decision making

Soft Skills

ownershipaccountabilitycollaborationmentoringadaptabilitycommunicationstakeholder managementanalytical thinkingproblem solvingcontinuous learning