COBOL Developer
The COBOL Developer designs, maintains and modernizes business-critical mainframe applications. Discover the role's missions, skills and career at T&S.
Mission
The COBOL Developer designs, develops, maintains, and modernizes business-critical applications built on mainframe environments. They play a key role in ensuring the stability, performance, and reliability of legacy systems that support essential business operations in sectors such as banking, insurance, finance, transportation, and public services.
Main Activities
- Analyze business and technical requirements.
- Develop, maintain, and enhance COBOL applications.
- Perform corrective, adaptive, and evolutionary maintenance on existing systems.
- Design and implement new functionalities within mainframe environments.
- Manage batch processing and transaction-based applications.
- Conduct testing, debugging, and performance optimization activities.
- Support production environments and troubleshoot operational incidents.
- Collaborate with business analysts, project teams, and infrastructure specialists to ensure system reliability and continuity.
Technical Skills
- COBOL programming.
- Mainframe environments (IBM z/OS).
- JCL (Job Control Language).
- CICS transaction processing.
- DB2 and relational databases.
- Batch processing and scheduling tools.
- Application maintenance and modernization.
- Software testing and debugging.
- Version control and development lifecycle practices.
- Understanding of enterprise business processes and legacy system architectures.
Soft Skills
- Strong analytical and problem-solving skills.
- Attention to detail and accuracy.
- Ability to work in complex legacy environments.
- Effective communication and stakeholder management.
- Teamwork and collaboration.
- Adaptability to modernization and transformation initiatives.
- Autonomy and organizational skills.
- Reliability and commitment to operational excellence.
- Career Opportunities
- CTA to the offer
Students, graduates & early careers
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Product engineering, validation environments and end-to-end product development capabilities.
Apprenticeship
Multi-year apprenticeship programs developed with universities and business or engineering schools
Junior Business Manager
A combined business and operational track for graduates entering consulting and services environments.
Campus T&S
Structured onboarding, mentoring, certifications and career support during the first 24 months.
Simple, fast, respectful
Our commitment — Every application receives a response and a transparent recruitment process.
Operational framing, technical alignment and project governance.
Industrial layouts, mechanics, automation studies and production workflows.
Assembly, integration, wiring and industrial realisation.
Factory Acceptance Testing, validation and commissioning preparation.
Our labels and commitments
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