Senior Software Engineer – Mainframe Modernization
Job Description
About this kind of role
What a Senior Software Engineer – Mainframe Modernization usually does. The employer's own details are in the listing.
Typically does: This role focuses on updating and improving legacy mainframe systems, often involving rewriting code in newer languages or architectures. Senior Software Engineers in this area analyze existing mainframe applications, design modernization strategies, and implement changes while ensuring minimal disruption to business operations. They may also be involved in testing, debugging, and documenting the modernized systems. Collaboration with other developers, architects, and business stakeholders is a key component of the work.
Tools and skills: Proficiency in COBOL, JCL, VSAM, CICS, and experience with modern programming languages like Java or Python, along with understanding of cloud technologies and DevOps practices, are typically required.
Good fit for: Individuals with a strong background in mainframe systems and a passion for applying modern technologies to solve complex challenges often thrive in this role.
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In the Chicago-Naperville-Elgin, IL-IN metro area, the middle pay across its 4.5 million jobs was $54,720 a year in May 2025, says the Bureau of Labor Statistics. Pay calculator →
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