Mainframe Developer – TSYS

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 Location:  100% remote (must work EST hours)
 
Job Summary:
We’re seeking a Mainframe Developer for our banking client modernizing its environment involving TSYS credit card processing. This role is ideal for someone who’s not only deeply technical and code-centric but also has worked with TSYS and understands the platform well enough to come in and hit the ground running.
 
Key Responsibilities:

• Leverage TSYS expertise to drive knowledge-sharing and accelerate modernization deliverables
• Partner closely with business analysts to understand complex business functions and convert them into actionable technical solutions
• Create design solutions end-to-end, taking full ownership from conception through hands-on implementation
• Dive deep into legacy systems, identify performance and design improvements, and implement scalable solutions
• Author clear, detailed technical and functional specifications and maintain updated system documentation
• Support modernization efforts with tools like GitLab, SonarQube, automated testing frameworks, Ansible, and others

 
Required Skills:

• Strong Mainframe experience: COBOL, CICS, VSAM, JCL, MQ, CA7, Xpeditor, ISPF
• Experience with TSYS credit card processing systems
• Proven track record in solution design architecture — including design, hands-on development, and performance optimization
• Strong problem-solving and communication skills; capable of distilling complex processes into streamlined solutions
• Comfortable working in both high-level architecture and detailed code analysis

 
Nice-to-Have:

• Exposure to modern IBM zSystems development tools: IDz, zDIH, ADDI, DBB, z/OS Connect
• Familiarity with DevOps toolchains: GitLab, Sonar products, automated testing tools, Ansible, etc.

 
Heitmeyer Consulting is an equal opportunity employer, and we encourage all qualified candidates to apply. Qualified applicants will be considered without regard to minority status, gender, disability, veteran status, or any other characteristic protected by law

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