Mainframe Developer

Ampstek; Paris; On-site; EUR 55,000 - 90,000; Full time

Job summary

Ampstek is seeking a Mainframe Software Engineer with 3–5 years of experience to support a finance-critical application landscape. You will participate in functional analysis, gather requirements, and translate business needs into technical solutions for a legacy mainframe environment.

Responsibilities include maintaining core mainframe applications, resolving Priority 0/1 incidents, and contributing to modernization while ensuring stability and security of deliveries.

Qualifications

• 3–5 years of experience in mainframe development and support
• Strong hands-on experience with COBOL, JCL, VSAM, ISPF, SDSF, MQ, IMS DB/DC, OPC/E (or equivalent scheduling tools)
• Solid knowledge of mainframe databases and data management systems: DL1 / IMS DB2
• Strong analytical skills and ability to work in complex, legacy environments
• Proven ability to communicate effectively with business stakeholders
• Experience working on business-critical or finance-critical applications

Responsibilities

• Maintain and enhance finance-critical mainframe applications
• Analyze, troubleshoot, and resolve Priority 0 / Priority 1 production issues
• Perform functional analysis and translate business requirements into technical solutions
• Reverse engineer existing applications to understand functionality and dependencies
• Collaborate closely with business stakeholders and French-speaking end users
• Contribute to modernization initiatives while ensuring stability and secure deliveries

Skills

Mainframe experience

COBOL

JCL

VSAM

ISPF

SDSF

MQ

IMS DB/DC

OPC/E

DL1/IMS DB2

Analytical skills

Communication with stakeholders

Finance-critical applications

Tools

COBOL

JCL

VSAM

ISPF

SDSF

MQ

IMS DB/DC

OPC/E

Job description

JD- Mainframe Software Engineer (Functional & Technical) Assignment Description: We are looking for a Mainframe Software Engineer with 3–5 years of experience to support a finance‑critical application landscape. The application handles Priority 0 to Priority 1 incidents with direct impact on factory production. The consultant will play a key role in securing business continuity, supporting daily operations, and contributing to an upcoming modernization roadmap. As this role replaces a Business Analyst, the Software Engineer is expected to actively participate in functional analysis, including understanding business processes, gathering requirements, and reverse‑engineering existing applications.

Key Responsibilities

• Maintain and enhance finance‑critical mainframe applications
• Analyze, troubleshoot, and resolve Priority 0 / Priority 1 production issues
• Perform functional analysis and translate business requirements into technical solutions
• Reverse engineer existing applications to understand functionality and dependencies
• Collaborate closely with business stakeholders and French‑speaking end users
• Contribute to modernization initiatives while ensuring stability and secure deliveries

Required Skills & Experience

• 3–5 years of experience in mainframe development and support
• Strong hands‑on experience with: COBOL, JCL, VSAM, ISPF, SDSF, MQ, IMS DB/DC, OPC/E (or equivalent scheduling tools)
• Solid knowledge of mainframe databases and data management systems: DL1 / IMS DB2
• Strong analytical skills and ability to work in complex, legacy environments
• Proven ability to communicate effectively with business stakeholders
• Experience working on business‑critical or finance‑critical applications

Desired / Meritorious Skills

• Prior involvement in application modernization programs
• Experience in manufacturing or industrial environments
• Ability to balance operational stability with transformation initiatives

Language & Location Requirements

• Fluent in French & English – daily interaction with team and business users
• English proficiency required for documentation and global collaboration

Location:

Mandatory Skiils:

France – preferably Lyon Team is based in France; on‑site

Mainframe programming languages and tools (e.g., COBOL, JCL, VSAM, ISPF, SDSF, MQ, IMS DB/DC, OPCE, or other relevant languages).

Knowledge of mainframe databases and data management systems, such as