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September 17, 2026

COBOL Developer (Mainframe) with C#/.NET

Junior • On-site

Strasbourg, 67, France

Quick Facts

  • Mission length: 3 years
  • Work mode: Hybrid (1 day remote per week after integration)
  • Location: Strasbourg (accessible by public transport)
  • Start date: ASAP

Description

We are looking for a COBOL / C# Developer to work on the banking and payment domain. You will take part in the full project lifecycle, including maintaining and updating existing applications and supporting operational readiness.

Responsibilities

  • Participate in enhancements and maintenance of payment-related applications
  • Support business/product owners in analyzing functional needs
  • Perform impact studies and functional analyses
  • Write functional and technical specifications
  • Develop solutions in COBOL Mainframe and .NET/C# environments
  • Implement and qualify new features for mobile payment systems
  • Prepare and execute test plans to ensure delivery quality (tests, code review, technical documentation)
  • Prepare for and support production releases
  • Participate in production monitoring and RUN activities
  • Contribute to continuous improvement of existing applications and processes

Requirements

  • Proven experience in COBOL development
  • C# skills with .NET experience
  • Knowledge of DB2 databases
  • Fluent English; able to work in an international environment
  • Experience with mainframe projects

Nice to Haves

  • Devbooster development knowledge
  • Experience in mobile payment and card payment projects
  • Ability to work in an Agile methodology

Benefits

  • Long-term mission (3 years)
  • Hybrid work model (1 day remote per week after integration)
  • Strasbourg location, accessible by public transport
  • Start ASAP

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