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Senior Mainframe Engineer (COBOL) – AI-Driven Modernization

Apex Systems

Southlake, Texas, United States

6 November 2026

Apex Systems is seeking an experienced Mainframe Engineer in Southlake, TX, onsite. The role focuses on COBOL, JCL, and DB2, connecting legacy mainframe systems with distributed applications. You will drive modernization, mentor teams, and use AI tooling to boost productivity. The ideal candidate has 10+ years of software development experience, incl. 3 years in lead roles, with a background in high-volume financial processing. On-site work with robust benefits is offered. #J-18808-Ljbffr