z/OS Mainframe Developer (Remote)

Job Locations US-VA-Alexandria
ID
2026-22102
# of Openings
1
Category
Information Technology
Type
CTH

Overview

  • Tier One Technologies has an immediate need for a z/OS Mainframe Developer to support our US Government client.
  • This is going to be a 100% remote position.
  • SELECTED CANDIDATES WITHOUT REQUIRED CLEARANCE WILL BE SUBJECT TO A FEDERAL GOVERNMENT BACKGROUND INVESTIGATION TO RECEIVE IT.

Responsibilities

  • Research, design, implement, and manage software programs as well as testing and evaluating new programs.
  • Resolve problems with software and respond to suggestions for improvements and enhancements.
  • Write and implement efficient code. Develop quality assurance procedures and deploy software tools, processes and metrics.
  • Participate in development of software user manuals. Instructs, assigns, directs, and checks the work of other software developers on the development team.
  • Consult with engineering staff to evaluate software-hardware interfaces and develop specifications and performance requirements.

Qualifications

  • A degree from an accredited College/University in Software Engineering, Computer Science, or related discipline is required.
  • 8+ years of hands-on experience with COBOL programming on IBM z/OS.
  • Proficiency in JCL, VSAM, DB2, IMS, CICS and RACF.
  • Strong knowledge of batch processing and online transaction processing.
  • Must have experience with IBM utilities, TSO/ISPF, and Abend-AID.
  • Experience in mainframe migration projects or modernization initiatives is preferred.
  • Experience with Control-D, Control-M, File-AID.
  • Familiarity with AI/ML tools (CoPilot, WatsonX, ReDux, others) for code analysis, pattern recognition, or modernization support.
  • Understanding of AI-driven code refactoring platforms/products and the ability to leverage AI to improve testing, documentation, and process optimization.
  • Familiarity with DevOps practices on mainframes, including tools like Jenkins and Git.
  • Strong written and verbal communication skills (ability to translate between business and technical concepts).
  • All candidates must be US Citizens or have permanent residence status (Green Card).
  • Must be able to obtain Public Trust Clearance.
  • Candidate must have lived in the United States for the past 5 years.
  • Cannot have more than 6 months travel outside the United States within the last 5 years. Military Service excluded.

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