Senior Mainframe Technical Integrator – Level 3

Keoni; Paris; Hybrid; EUR 70,000 - 110,000; Full time

Job summary

Keoni in Paris is seeking a Senior Mainframe Technical Integrator to manage deployments, build environments, and support critical payment applications.

You will work across integration, testing, and production, with on-call duties and evening/late deployments as required. Strong autonomy and strict adherence to production processes are essential.

Qualifications

• Experience in critical banking production environments.
• Autonomy, rigor, and adherence to production processes.
• Experience in banking payments and high-availability applications is preferred.

Responsibilities

• Managing application deployments across different environments (integration, testing, production).
• Building and cloning environments.
• Providing technical support to development and operations teams.
• Ensuring quality control and adherence to delivery standards.
• Optimizing applications technically.
• Participating in maintenance, upgrades, and resilience testing.
• Managing production deployments and tracking changes.

Skills

z/OS

MVS/TSO

COBOL

DB2

CICS

JCL

Application maintenance

IT project analysis

IT project design

Tools

MQ Series

XML

VS Code

GitHub

Job description

# Senior Mainframe Technical Integrator – Level 3* Home* Senior Mainframe Technical Integrator – Level 3* June 11, 2026* 0 Comments* By Roberte OkoyaContext Intervention on critical applications for managing transfers, SEPA/non-SEPA direct debits and instant payments, based on the Evolan Payment Engine (EPE) software package from Sopra.Main RUN Responsibilities : • Managing application deployments across different environments (integration, testing, production) • Building and cloning environments • Providing technical support to development and operations teams • Ensuring quality control and adherence to delivery standards • Optimizing applications technically • Participating in maintenance, upgrades, and resilience testing • Managing production deployments and tracking changes CHANGE Responsibilities: • Analyzing technical impacts • Participating in releases through to production deployment • Estimating technical solutions • Participating in technical committees • Challenging development teams on technical choices • Implementing production deployment processesEssential Skills • z/OS • MVS / TSO • COBOL • DB2 • CICS • JCL • Application Maintenance • IT Project Analysis and Design • Microsoft Office SuiteDesired skills • Payment methods • MQ Series • XML • VS Code • GitHubConstraints • Critical banking environment with high volume • Occasional weekend on-call duty (4 to 5 times/year) • Deliveries possible after 6 p.m. (approximately once/week) • Monthly production deployments during non-working hours • Strong autonomy, rigor, and adherence to production processes requiredDesired profile: Experienced Mainframe technical expert, proficient in critical production environments, delivery and production processes, ideally with experience in banking payments and high availability applications.Application: CV + cover letter + copies of diplomas to be sent to [e-mail]