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Mainframe Programmer (Z/OS)

eSolutionsFirst, LLCMcLean, VA🇺🇸United StatesPosted 17 Jul 2026

Quick Overview

Work Type
On Site
Level
Mid Senior

Job Description

Mainframe Programmer (Z/OS)

12 Months contract –    EXTENSION   

McLean , VA – On-site   M-F  

Must Have Qualifications:

  • Must have 10+ years as a Mainframe Programmer with hands on technical expertise supporting Z/OS environments.
  • Candidate should have strong mainframe programming and system experience, with mortgage/financial service experience preferred but not required.
  • Schedule: Standard – 40 hours per week. Occasional off-hours support may be needed, with flexibility provided to adjust the schedule and ensure the standard 40 hour week is maintained. 

Job Description:

  • The Mainframe Engineering team in Enterprise Operations & Technology is accountable for providing a stable, secure, resilient and risk managed platform for our business teams to develop, deploy and integrate applications on Mainframe.
  • The client leverages a managed service provider to enable “Mainframe Platform as a Service” yet provides governance and oversight on the contractual engagements with the supplier and functions as an integrator between the supplier and internal The client teams including the business partners.
  • The client is simultaneously executing a 3 Year roadmap to migrate off Mainframe applications to cloud, to sunset Mainframe in a safe and data retention compliant manner.
  • The client has an exciting opportunity for a mainframe engineering infrastructure senior (SysProg) to add to our existing mainframe infrastructure team.
  • The team is accountable for managing work efforts for the z/os infrastructure, hardware, software, monitoring and coordinating across business, application teams, and the managed services vendor.

The Mainframe engineer’s (SysProg) responsibilities include:

  • Technical Lead for Mainframe Platform (z/OS, Dell Storage, IMS, DB2, RACF, CA JobTrac) to govern operations, changes and sustainability upgrade projects.
  • Interface between Freddie Mac teams and Managed Service Supplier for issue resolution & change coordination.
  • Accountable for governance and oversight on contractual SLAs and key metrics.
  • Perform technical review, validation, coordination and compliance assurance for Vendor Managed and business requested Mainframe infrastructure changes (maintenance and sustainability upgrades)
  • Execute risk management controls, Baseline Security Compliance activities and audit support, involving technical review and execution of z/OS, IMS, DB2 and zSecure subsystems, involving RACF security.
  • Work as client side - technical SME for Mainframe infrastructure subsystems, to hold Managed Service Provider accountable to deliver on the changes and contracted services
  • Requires detailed knowledge of z/OS, IMS and DB2 subsystems and RACF security services
  • Flexibility for unscheduled engagement to lead & drive major incident resolutions & planned after-hour releases.
  • Perform root cause analysis with corrective and preventive measures.
  • Communicates and Influences effectively.

 

Your Impact:

  • Identifies technical risks to planned system upgrades and works toward implementing mitigations to those risks.
  • Reviews completion and implementation of system upgrades and/or enhancements and makes recommendations to management on opportunities for improvement.
  • Identifies, analyzes, and resolves system problems.

Qualifications:

  • 5+ years of hands on experience in mainframe infrastructure engineering
  • Knowledge of z/OS architectures and z/OS internals
  • Knowledge of the zSecure tool and its is own language, Carla, for customization a plus
  • Knowledge of mainframe security and RACF
  • Knowledge of mainframe security related to supporting audits & findings – in reference to BSCs, key managements a plus
  • Knowledge of IBM Mainframe System - JCL, CICS, SQL, z/OS, DB2, IMS, VSAM, XML, TSO/ISPF, zconnect

Keys to Success in this Role:

  • Proactive and ability to think creatively and execute in a manner that respects and meets appropriate internal controls.
  • Very strong attention to detail, ability to execute process, and follow through on tasks, with significant organizational, project and program management skills.
  • Excellent communications skills, including comfort interacting with internal management and external stakeholders.

Skills

SQL
Compliance
Internal Controls
Risk Management
Root Cause Analysis
SAFe

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