Cobol Developer

Atos is the Atos Group brand dedicated to AI-powered, secure, end-to-end digital services. Atos designs, develops, and operates critical digital environments that drive performance, resilience and sovereignty, helping public and private organizations worldwide retain control over their data and infrastructures, while meeting regulatory requirements.

With more than 52,000 employees serving over 4,500 clients across 54 countries, Atos helps modernize core IT systems, accelerate cloud and data transformation, strengthen cybersecurity, and deliver secure digital workplace environments to support its clients, its employees and society. Atos also provides consulting and advisory services through its Atos Amplify brand.
A trusted partner in operating complex and mission-critical environments, Atos supports organizations across highly regulated and sovereign contexts.

About Atos Group

Atos Group is a global leader in digital transformation with c. 54,000 employees and annual revenue of c. €7.2 billion, operating in 54 countries under two brands - Atos for services and Eviden for products and systems. European number one in cybersecurity and a leader in cloud, Atos Group is committed to a secure and decarbonized future and provides tailored AI-powered, end-to-end solutions for all industries. Atos Group is listed on Euronext Paris.

We are looking for a Cobol Developer to support the maintenance and evolution of a portfolio of COBOL and Java applications within a complex information system.

The role is part of a Third-Party Application Maintenance (TMA) environment, focused on:

• Data quality and consistency
• Regulatory compliance
• Reliability of critical data flows
• Service continuity for business-critical systems

TMA activities typically include corrective, evolutive, and preventive maintenance of applications while ensuring performance and compliance.

Key Responsibilities

1. Technical Leadership

• Act as the technical reference across the RFOS application landscape (batch processing, services, UIs, sub-programs).
• Ensure consistency of the hybrid COBOL/Java architecture.
• Provide technical guidance and mentoring to developers (best practices, code reviews, complex components).
• Serve as a key technical escalation point for maintenance and regulatory evolution topics.
• Lead continuous improvement initiatives (performance, quality, maintainability).

2. Development & Maintenance

• Lead and contribute to corrective and evolutive maintenance activities.
• Work on business-critical components, including:
  • Daily batch import/export processing
  • Data exposure through Web Services
  • Management and consultation user interfaces
  • Reference data, contracts, and nomenclature modules
• Ensure the robustness and performance of batch processes, which typically handle large volumes of data in scheduled automated runs.
• Contribute to technical debt reduction within a large legacy application landscape.
• Analyze and troubleshoot incidents across production systems.

3. Quality, Testing & Industrialization

• Define and implement testing strategies (component, integration, and data flow testing).
• Secure batch processing (restart mechanisms, controls, monitoring).
• Improve and maintain industrialization processes (scheduling, shell scripts, Unix tooling).
• Ensure data quality, traceability, and consistency across systems.
• Manage and control sensitive data flows and reconciliation processes.
• Contribute to the design and evolution of Web Services for data exposure.
• Perform technical impact analyses related to regulatory changes.

4. Collaboration

• Work closely with:
  • Operations teams
  • Testing teams
  • Business stakeholders (MOA)
• Participate actively in incident resolution, including data-related production incidents.
• Ensure alignment across multiple interconnected systems and external data repositories (e.g., healthcare registries or national datasets).

Accountability:

• Ensure the technical and functional quality of RFOS applications.
• Secure critical data flows and reference data systems.
• Proactively contributes to technical and organizational improvements.
• Maintain high-quality documentation (technical, functional, operational).

Required Technical Skills

Mandatory

• COBOL
• SQL
• Unix / Shell scripting
• Spring Batch
• Experience with UIs and service-oriented architectures
• Fluent French

Nice to have

• Java
• ClearQuest or equivalent tools

Other Technical Expertise

• Web Services design and data exposure
• Middleware: WebLogic
• Environments: Unix / AIX
• Scheduling: $U (or similar orchestrator)
• Version control and testing tools (batch & data flow validation)
• Data reconciliation and control tools

Strong understanding of:

• Data quality, consistency and reference systems
• Complex inter-application data flows
• Critical and high-impact regulatory systems

Here at Atos, diversity and inclusion are embedded in our DNA. Read more about our commitment to a fair work environment for all.

Atos is a recognized leader in its industry across Environment, Social and Governance (ESG) criteria. Find out more on our CSR commitment. 

Choose your future. Choose Atos.