DNI (Delaware Nation Industries)
Senior Mainframe Systems Programmer (IBM z/OS, CICS, MQ)
Be an Early Applicant
Administer and maintain IBM z/OS environments, CICS Transaction Server, and IBM MQ. Perform installations, upgrades, migrations, patching, troubleshooting, performance tuning, security compliance, backup and disaster recovery support. Manage change and incident processes, create technical documentation, and support implementation and recovery planning. Provide technical guidance to junior staff and collaborate with infrastructure, cybersecurity, application, and operations teams to maintain secure, highly available mainframe services.
We are seeking an experienced Senior Mainframe Systems Programmer to support and maintain IBM z/OS environments, with a strong focus on CICS Transaction Server and IBM MQ. This role is responsible for system administration, software installation and upgrades, troubleshooting, performance tuning, security compliance, disaster recovery support, and technical documentation in a secure, highly regulated enterprise environment.
The ideal candidate has deep hands-on experience with IBM mainframe technologies, middleware administration, change and incident management, and supporting mission-critical systems with high availability and operational stability.
Key Responsibilities- Administer, install, configure, upgrade, and maintain IBM z/OS mainframe environments, including CICS Transaction Server, IBM MQ, and related software products
- Perform software installations, migrations, upgrades, patching, and implementation activities across multiple mainframe environments
- Troubleshoot and resolve system abends, outages, and performance issues using logs, traces, dumps, and monitoring tools
- Manage IBM MQ environments, including queue managers, queues, channels, backup processing, and web services administration
- Monitor and tune system and middleware performance to ensure availability, reliability, and operational efficiency
- Support secure and compliant system operations in accordance with cybersecurity and enterprise security requirements
- Develop and execute implementation plans, test plans, recovery plans, and back-out procedures for software and hardware changes
- Coordinate change management, incident management, CAB activities, and cross-functional implementation efforts using approved operational processes and tools
- Create and maintain technical documentation, standard operating procedures, implementation guides, root cause analysis reports, and status updates
- Utilize SMP/E, JCL, TSO/ISPF, REXX, CLIST, COBOL, and related IBM utilities to support administration, automation, and system operations
- Support backup, recovery, and disaster recovery planning, testing, and execution
- Provide technical guidance, mentoring, training, and customer support to project teams, junior staff, and stakeholders
- Collaborate with infrastructure, cybersecurity, application, and operations teams to ensure stable and secure mainframe services
Requirements
- Active Top Secret Security Clearance
- DoD IAT Level II certification required
- Minimum of 8 years of experience in mainframe systems programming, administration, or support
- Bachelor’s degree in Information Technology, Computer Science, Engineering, or a related field, or equivalent combination of experience and training
- Strong hands-on experience with IBM z/OS, CICS Transaction Server, and IBM MQ
- Experience with software installation, upgrades, patching, maintenance, and migration activities in enterprise mainframe environments
- Experience troubleshooting system abends, dumps, traces, and performance issues in production environments
- Working knowledge of SMP/E, JCL, TSO/ISPF, REXX, CLIST, and related IBM mainframe utilities
Similar Jobs
Aerospace • Information Technology • Software • Cybersecurity • Design • Defense • Manufacturing
Operate and maintain Insitu unmanned aircraft systems, conduct preflight planning and mission briefings, collect and analyze flight data, perform troubleshooting and field maintenance, coordinate with customers and subject-matter experts, manage spares inventory, and deploy worldwide in austere environments to support customer missions.
Top Skills:
Basic NetworkingIntegratorRq21ScaneagleUas Platforms
Aerospace • Information Technology • Software • Cybersecurity • Design • Defense • Manufacturing
Support export compliance for unmanned aerial systems: draft, submit, and manage ITAR/EAR licenses and commodity jurisdiction requests; classify technical data; manage license lifecycle and documentation; coordinate with stakeholders and provide licensing guidance as an empowered official.
Top Skills:
ExcelMicrosoft TeamsOcr EaseSharepoint
Cloud • Computer Vision • Information Technology • Sales • Security • Cybersecurity
Leads enterprise security software sales across assigned Florida accounts, focusing on prospecting, qualification, new customer acquisition, revenue delivery, forecasting, and closing complex enterprise deals. Develops account plans, engages executive decision-makers, coordinates onboarding and adoption with internal teams, manages CRM activity, collaborates with partners and marketing, and provides customer feedback. Requires deep expertise in security software sales, consultative selling, negotiation, business value, and AI-enabled workflows.
Top Skills:
Artificial IntelligenceCrm SoftwareCybersecurityEnterprise Security SoftwareFalcon FlexMarketing Software
What you need to know about the Colorado Tech Scene
With a business-friendly climate and research universities like CU Boulder and Colorado State, Colorado has made a name for itself as a startup ecosystem. The state boasts a skilled workforce and high quality of life thanks to its affordable housing, vibrant cultural scene and unparalleled opportunities for outdoor recreation. Colorado is also home to the National Renewable Energy Laboratory, helping cement its status as a hub for renewable energy innovation.
Key Facts About Colorado Tech
- Number of Tech Workers: 260,000; 8.5% of overall workforce (2024 CompTIA survey)
- Major Tech Employers: Lockheed Martin, Century Link, Comcast, BAE Systems, Level 3
- Key Industries: Software, artificial intelligence, aerospace, e-commerce, fintech, healthtech
- Funding Landscape: $4.9 billion in VC funding in 2024 (Pitchbook)
- Notable Investors: Access Venture Partners, Ridgeline Ventures, Techstars, Blackhorn Ventures
- Research Centers and Universities: Colorado School of Mines, University of Colorado Boulder, University of Denver, Colorado State University, Mesa Laboratory, Space Science Institute, National Center for Atmospheric Research, National Renewable Energy Laboratory, Gottlieb Institute
