CareerPlan

Développeur/se Java & Mainframe - Services Financiers - Brest

Guipavas, Bretagne, FRFull-time2026-11-06 → 2026-11-07

Core

Modernize banking systems by developing and maintaining legacy Mainframe (COBOL) applications while transitioning to modern Java microservices architectures.

Role type

Senior Java & Mainframe Developer (COBOL/Java)

Builds

Banking solutions for French and European banks

Domain

Financial Services / Banking

Deliverable

production ML models | product features

Required skills

Java, COBOL, SQL, Microservices, CI/CD, Docker, GitLab

Preferred skills

Azure OpenAI, Google Cloud, Talend, Oracle ODI, SOLID principles, Clean Code

Technologies

IBM z/OS, TELON, Endevor, DB2, CICS, Oracle ODI, Data Catalyst, Azure OpenAI, Google Cloud, GitLab, Docker, S3, Openstack

Responsibilities

Design and develop User Stories (backend & frontend), Estimate workloads and perform testing, Participate in CI/CD pipelines, Utilize AI assistants for legacy code modernization

Seniority

Senior, hands-on IC