Software Engineer z/OS

Atruvia AG

Software Engineer z/OS developing core banking applications in Karlsruhe. Collaborating with cross-functional teams and modernizing legacy systems.

Posted 7/20/2026full-timeKarlsruhe • 🇩🇪 GermanyMid-LevelSenior💰 €75,000 - €105,000 per yearWebsite

Core Competencies

Role fit

Core Competencies

Use this summary to align your resume positioning with the role.

Demonstrates deep knowledge of mainframe development, including COBOL, PL/I, JCL, and DB2, while effectively engaging in the software lifecycle within an Agile/Scrum environment. Fluent in German and English, with a strong commitment to quality and responsibility in maintaining high-availability systems.

Highest-signal resume keywords

Mainframe DevelopmentCOBOLAgile/Scrum MethodologyFluent German (C1)DB2

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Mainframe DevelopmentCOBOLPL/IJCLDB2Automated TestingSoftware Lifecycle ManagementAPI DevelopmentTest DocumentationQuality Assurance

Soft Skills

Analytical SkillsDetail-OrientedSolution-OrientedTeam PlayerGood Communication Skills

Tools & Technologies

Mainframe Development ToolsCloud SolutionsFrontend SolutionsAgile Tools

Industry Keywords

Banking SectorFinance SectorLegacy SystemsHigh Availability Systems

Tech Stack

Tools & technologies

CloudTypeScript

About the role

Key responsibilities & impact

You will take on diverse and responsible tasks at the heart of our IT: the central mainframe applications of the Account Base squad and their numerous technical interfaces.
One focus of your role is the technical conception, design and quality-conscious software development of complex mainframe applications to secure our core processes.
You will maintain, optimize and further develop existing mainframe systems and ensure performant connectivity to modern cloud and frontend solutions (APIs).
To make our central core banking systems more stable and future-proof every day, you contribute your deep technical knowledge as an active member of an agile team (Scrum) and proactively engage with architectural topics.
You accompany the entire software lifecycle: from automated test case creation and provision of test data, through test documentation, to final deployment to production to safeguard our high quality standards.

Requirements

What you’ll need

Completed vocational training with many years of professional experience (e.g., IT specialist in application development) or a completed degree in (business) computer science or a comparable technical qualification with solid practical experience.
Deep knowledge of mainframe development (e.g., COBOL, PL/I, JCL, DB2 or IMS) and experience with common mainframe development tools; ideally you have experience in the banking/finance sector and with Agile/Scrum methodology.
Fluent German skills (at least C1) and good English skills (at least B2).
You are passionate about IT, analytically strong, detail-oriented and willing to understand and modernize complex legacy structures.
You demonstrate a high level of commitment, have a pronounced quality and responsibility awareness for highly available systems and work independently.
You are a solution-oriented team player with good communication skills at the interfaces between the mainframe world and modern software architectures.

Benefits

Comp & perks

Flexible working: We work in a balanced hybrid mix of remote work and presence in modern office environments (Activity Based Working).
Work–life balance: With our individual working time models such as part-time, the option to choose full-time between 30–40 hours, and our lifetime working account (sabbatical and/or leave before retirement), you will find the right balance.
Combining private life and career: We offer a family allowance and support in special family situations, e.g., caring for relatives.
Individual benefits: In addition to a company pension plan (subsidised occupational pension), you can choose between bike leasing, IT hardware leasing, capital-forming benefits and/or an additional day off, as well as other options.
Onboarding: A guided and individual induction with a mentor (buddy) as well as regular feedback meetings with your People Lead support your arrival. We also welcome you at our #enter welcome event.
Health management – Health, Family and Life: Our offerings support you, for example through cooperations with Familiengenossenschaft and voiio. Enjoy varied meals in our company restaurants and connect through our sports offerings.
Career model and training: In our development dialogues you discuss your professional, methodological and personal career goals and pursue them through our wide range of training opportunities.
Our company values: Respectful, open and honest, self-responsible, supportive and result-oriented – guided by team spirit, customer orientation and a desire for innovation and intensive knowledge exchange.
Future and job security: As a cooperative company with decades of experience, we are thought leaders in digital transformation in the banking world and a systemically important employer.
Kununu: We are a Top Company 2026 and proud of a Kununu score of 4.3 and a recommendation rate of ≥ 90%.