DMI is a leading provider of digital services and technology solutions, headquartered in Tysons Corner, VA. With a focus on end-to-end managed IT services, including managed mobility, cloud, cybersecurity, network operations, and application development, DMI supports public sector agencies and commercial enterprises around the globe. Recognized as a Top Workplace, DMI is committed to delivering secure, efficient, and cost-effective solutions that drive measurable results. Learn more at www.dminc.com

We are seeking a highly experienced and motivated Mainframe Systems Engineer to lead technical support and management for IBM z/OS mainframe-based solutions. This position requires a deep understanding of mainframe operations, system integration, and advanced troubleshooting capabilities. The ideal candidate will have a blend of technical expertise, strong communication skills, and experience in financial services or similar environments.

Duties and Responsibilities:

• Technical Support and Maintenance
  • Provide senior-level technical support for IBM z/OS mainframe systems, including installation, implementation, administration, and maintenance.
  • Perform problem determination and resolution, including system dump analysis and root cause identification for outages and system issues.
  • System Upgrades and Fixes
  • Collaborate with team members and vendors to capture and analyze system dumps, apply system fixes and patches, and coordinate testing and roll-out of new system versions.
• System Software and Infrastructure Management
  • Install, maintain, and customize operating systems and third-party ISV system software.
  • Configure, debug, and maintain TCPIP and VTAM subsystem configurations.
  • Prepare and install system software, adhering to vendor and site-specific installation protocols.
• Large-Scale System Integrity
  • Participate in the installation, implementation, and performance testing of IBM z/OS Parallel Sysplex systems, including shared and cluster queues.
  • Manage LPAR environments and ensure the reliability and integrity of large-scale systems.
• Collaboration and Coordination
  • Work closely with technical teams, internal stakeholders, and vendor support to ensure seamless roll-out of new systems and solutions.
  • Effectively communicate technical issues and solutions with staff, customers, and other IT personnel at all levels.

Education and Experience:

• BA/BS in Computer Science, Engineering, or an equivalent combination of education or experience.
• Six or more years of experience in mainframe operations management, including TCPIP and VTAM configuration and debugging.

Technical Skills:

• Advanced knowledge of z/OSMF, AT-TLS rules, IPSEC policies, SMP/E, TSO/ISPF, SDSF/ISPF, and LPAR management.
• Strong understanding of standard systems integration tools and practices.

Analytical and Communication Skills:

• Strong analytical skills with the ability to troubleshoot and resolve complex issues.
• Excellent written and oral communication skills, with the ability to convey technical concepts to various audiences.

Preferred:

• Experience in a financial services environment.

Additional Requirements: Successful completion of a Public Trust background investigation and/or a Public Trust clearance.

Min Citizenship Status Required: Must be a U.S. Citizen

Physical Requirements: No physical requirement is needed for this position.

Location: Remote, US

DMI is a diverse, prosperous, and rewarding place to work. Our culture is shaped by five core values that guide how we work, grow, and succeed together:

• Do What’s Right – We lead with honesty and integrity.
• Own the Outcome – We take responsibility and deliver.
• Deliver for Our Customers – We are relentless about delivering value.
• Think Bold, Act Smart – We innovate with purpose.
• Win Together – We collaborate and celebrate our success.

These values aren’t just ideals—they show up in how we support every part of your well-being:

• Convenience/Concierge – Virtual health visits, commuter perks, pet insurance, and entertainment discounts that make life easier.
• Development – Annual performance reviews, tuition assistance, and internal career growth opportunities to help you thrive.
• Financial – Generous 401(k) matches, life and disability insurance, and financial wellness tools to support your future.
• Recognition – Annual awards, service anniversaries, referral bonuses, and peer-to-peer shoutouts that spotlight your achievements.
• Wellness – Healthcare coverage, wellness programs, flu shots, and biometric screenings to support your health.

DMI values employees for their talents and contributions, and we take pride in helping our customers achieve their goals. Because when we live our values, we all win together.

***************** No Agencies Please *****************

Applicants selected may be subject to a government security investigation and must meet eligibility requirements for access to classified information. US citizenship may be required for some positions.