Senior Mainframe Developer

LUXOFT; Belfast; On-site; GBP 50,000 - 70,000; Full time

Job summary

A leading IT consultancy is seeking an experienced Mainframe Developer in Belfast to support the migration of a legacy system to a cloud-based environment. The role involves enhancing COBOL applications and collaborating with teams for a smooth transition. Candidates should have strong debugging skills and experience in CICS and DB2. This position requires on-site work 5 days a week.

Qualifications

• 5+ years of experience in COBOL development.
• Strong debugging and performance tuning skills.
• Experience working with CICS and DB2.

Responsibilities

• Analyze and enhance existing mainframe codebase.
• Extract business logic for migration to modern architecture.
• Provide knowledge transfer and documentation.

Skills

Proficiency in COBOL development

Strong debugging skills

Experience with CICS transactions

Excellent communication skills

Job description

Project description

We have an ambitious goal to migrate a legacy system written in HLASM (High-Level Assembler) from the mainframe to a cloud-based Java environment for one of the largest banks in the USA.

Responsibilities

• We are looking for an experienced Mainframe Developer who can support the migration of the client platform:- Analyze, understand, and enhance existing mainframe codebase (COBOL, JCL, CICS, DB2, IMS).- Extract and transform business logic from mainframe systems for migration to modern architecture.- Troubleshoot, debug, and resolve issues within mainframe applications during migration.- Collaborate with Java and client teams to ensure smooth transition and accurate functionality replication.- Provide knowledge transfer and documentation of mainframe components and processes.- Mandatory work from the office 5 days per week.

SKILLS

Must have

• - Proficiency in COBOL development and JCL (5+ years).- Strong debugging, performance tuning, and problem-solving skills.- Experience with CICS transactions and DB2 database programming.- Solid understanding of mainframe batch and online processing.- Experience working in distributed, global teams with US customers.- Excellent communication skills for collaboration with client teams.

Nice to have

- Experience with IMS, VSAM, or HLASM.- Familiarity with large-scale system migrations and modernization projects.- Understanding of integration between mainframe and cloud-based systems.- Prior experience in banking or financial services industry.- Knowledge of automation tools for mainframe testing and deployment.