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Mainframe Computer Jobs in Washington (NOW HIRING)

McLane Company

Coordinator, Dispatch

Manassas, VA · On-site

$23/hr

Knowledge of mainframe computer software (PeopleSoft) relating to record keeping/scheduling for drivers and helpers. * Preferred experience in Windows environment and on Excel, Microsoft Word, and ...

System One

.NET Mainframe Developer

Vienna, VA · Remote

$50.25 - $64.50/hr

Bachelor's degree in Computer Science, Information Systems, or related field, or the equivalent combination of education, training, or experience. * 5-7 years of experience in application or software ...

System One

.NET Mainframe Developer

Vienna, VA · Remote

$50.25 - $64.50/hr

Bachelor's degree in Computer Science, Information Systems, or related field, or the equivalent combination of education, training, or experience. * 5-7 years of experience in application or software ...

System One

.NET Mainframe Developer

Vienna, VA · Remote

$50.25 - $64.50/hr

Bachelor's degree in Computer Science, Information Systems, or related field, or the equivalent combination of education, training, or experience. * 5-7 years of experience in application or software ...

System One

.NET Mainframe Developer

Vienna, VA · Remote

$50.25 - $64.50/hr

Bachelor's degree in Computer Science, Information Systems, or related field, or the equivalent combination of education, training, or experience. * 5-7 years of experience in application or software ...

System One

.NET Mainframe Developer

Vienna, VA · Remote

$50.25 - $64.50/hr

Bachelor's degree in Computer Science, Information Systems, or related field, or the equivalent combination of education, training, or experience. * 5-7 years of experience in application or software ...

System One

.NET Mainframe Developer

Vienna, VA · Remote

$50.25 - $64.50/hr

Bachelor's degree in Computer Science, Information Systems, or related field, or the equivalent combination of education, training, or experience. * 5-7 years of experience in application or software ...

Infojini Inc

HELP DESK

Washington, DC

$23.25 - $31.75/hr

Experience with Mainframe operations a plus including working knowledge and skill operating z/OS ... Desired Skills: BS/BA in Information Systems, Computer Science or related field HIGHLY DESIRABLE ...

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Mainframe Computer information

What is a mainframe computer?

A Mainframe Computer job typically involves working with large-scale, high-performance computing systems used by enterprises for critical applications such as banking, finance, and healthcare. Responsibilities may include system administration, application development, performance monitoring, and troubleshooting. Professionals in this field often work with mainframe operating systems like z/OS and programming languages such as COBOL, JCL, and REXX. This role requires strong analytical skills and knowledge of legacy systems, as mainframes continue to be integral to many industries.

What are the key skills and qualifications needed to thrive in the mainframe computer position?

To thrive as a Mainframe Computer Operator or Specialist, you need a solid understanding of mainframe hardware, operating systems (such as IBM z/OS), and data center best practices, alongside a degree in computer science or related experience. Familiarity with job scheduling tools (like JCL), monitoring utilities, and expertise in mainframe programming languages (such as COBOL) are commonly required, and certifications such as IBM Certified System Programmer are advantageous. Attention to detail, strong troubleshooting abilities, and excellent communication skills are essential for coordinating with IT teams and resolving system issues. These competencies ensure the reliability, security, and efficiency of mission-critical mainframe systems in large organizations.

What are some common challenges faced by mainframe professionals in day-to-day operations?

Mainframe professionals often face challenges such as managing complex batch job schedules, troubleshooting unexpected system outages, and ensuring data security while dealing with legacy applications. The work requires careful monitoring for performance bottlenecks and rapid response to issues, often during off-hours or on-call rotations. Collaboration with programming, network, and system administration teams is frequent, as mainframe environments are integral to business-critical services. Successfully handling these challenges helps maintain uptime and reliability for the organization’s core operations.

Is a mainframe computer a good career option?

A career as a mainframe computer professional involves maintaining and supporting large-scale enterprise systems, which are critical for industries like finance and government. It requires skills in mainframe operating systems, programming languages such as COBOL, and certifications like IBM Certified Systems Expert. The role offers stability and demand due to the continued reliance on mainframes for mission-critical applications.

Is a mainframe computer still in demand?

Mainframe computers remain in demand for large-scale enterprise applications, especially in banking, finance, and government sectors that require high reliability, security, and processing power. Skilled mainframe professionals with knowledge of COBOL, JCL, and mainframe environments are sought after to maintain and upgrade these systems.

What are jobs in mainframe computer?

Jobs in mainframe computers include roles such as mainframe programmers, system analysts, and operators who maintain, develop, and troubleshoot mainframe systems. These positions often require knowledge of languages like COBOL or PL/I, familiarity with mainframe operating systems such as z/OS, and certifications in mainframe technology. Mainframe professionals work in environments that demand high reliability and security, often following shift schedules to ensure continuous system operation.

What are popular job titles related to Mainframe Computer jobs in Washington?

For Mainframe Computer jobs in Washington, the most frequently searched job titles are:

What job categories do people searching Mainframe Computer jobs in Washington look for?

The top searched job categories for Mainframe Computer jobs in Washington are:

Mainframe Computer jobs near you
Infographic showing various Mainframe Computer job openings in Washington as of August 2026, with employment types broken down into 1% As Needed, 80% Full Time, 10% Part Time, 2% Temporary, 6% Contract, and 1% Nights. Highlights an 71% Physical, 2% Hybrid, and 27% Remote job distribution.

Mainframe Engineer - 17428

Seneca Resources Company, LLC

Vienna, VA • On-site

$75/hr

Contractor

Medical, Dental, Vision, Retirement

Posted 7 days ago

Job description

Senior Mainframe Automation Engineer
Position Title: Senior Mainframe Automation Engineer
Location: Vienna, VA - Hybrid, 3 days onsite per week
Clearance Requirements: None specified
Position Status: Contract
Pay Rate: $75/Hr On W2
Experience: 10+ years
Openings: 1
Position Description
Seneca Resources is seeking a Senior Mainframe Automation Engineer to design, implement, and support enterprise-scale automation solutions across IBM z/OS environments. This role is ideal for a highly experienced mainframe professional with deep expertise in IBM System Automation for z/OS, REXX, IBM NetView, z/OS operations, and high-availability automation.
The successful candidate will investigate complex operational and technical challenges, develop scalable automation solutions, improve system reliability, and reduce manual intervention across critical business services. This position will also provide technical leadership, mentoring, and guidance while partnering with technical teams, business stakeholders, and leadership.
Key Responsibilities
  • Design, develop, implement, and maintain enterprise automation solutions for IBM z/OS environments.
  • Administer and configure IBM System Automation for z/OS (SA z/OS), including policy development, managed resource automation, automation definitions, resource dependency models, and policy database maintenance.
  • Develop advanced REXX programs, command processors, automation routines, operational tools, and automation scripts.
  • Configure and maintain IBM NetView automation, including automation tables, message automation, command lists, PIPEs, event processing, and policy-driven automation.
  • Develop and support automation across critical z/OS subsystems and middleware, including CICS, Db2, IMS, JES2/JES3, MQ, and TCP/IP.
  • Design automation for CICS availability, startup, shutdown, recovery, restart, and health monitoring.
  • Support Parallel Sysplex environments and cross-system automation strategies.
  • Develop high-availability, recovery, restart, and self-healing automation solutions.
  • Work with IBM Workload Scheduler, including IWS, TWS, and ZWS, to support enterprise workload automation.
  • Support z/OS UNIX System Services (USS/OMVS), including automation of UNIX processes and shell scripts.
  • Integrate mainframe automation with monitoring and event management platforms such as IBM OMEGAMON, ServiceNow, and Moogsoft.
  • Identify opportunities to automate operational processes across IBM z/Series, UNIX, and Windows platforms.
  • Troubleshoot complex operational, technical, and business problems and recommend reliable automation solutions.
  • Analyze requirements and translate business and technical needs into scalable automation strategies.
  • Lead, guide, and mentor technical team members while promoting automation best practices and continuous improvement.
  • Communicate complex technical concepts effectively to engineers, business partners, and senior leadership.
  • Participate in an on-call rotation when required.
  • Improve operational efficiency, system availability, reliability, and service resilience through automation.
Required Skills & Qualifications
  • 10+ years of experience in mainframe systems, automation engineering, systems programming, or a related technical discipline.
  • Expert-level experience with IBM System Automation for z/OS (SA z/OS).
  • Advanced REXX programming experience.
  • Strong hands-on experience with IBM NetView and NetView automation.
  • Experience with automation tables, message automation, command lists, PIPEs, event processing, and policy-based automation.
  • Strong knowledge of IBM z/OS operating environments and mainframe operations.
  • Hands-on experience with CICS, Db2, IMS, JES2/JES3, MQ, and TCP/IP.
  • Experience developing CICS automation, including startup, shutdown, recovery, restart, availability, and health monitoring.
  • Strong understanding of Parallel Sysplex and cross-system automation.
  • Proficiency with JCL, SDSF, TSO/ISPF, and z/OS operational processes.
  • Experience with IBM Workload Scheduler, IWS, TWS, and/or ZWS.
  • Experience with z/OS UNIX System Services (USS/OMVS) and shell scripting.
  • Experience integrating automation with monitoring and event management tools.
  • Strong troubleshooting, analytical, research, prioritization, and problem-solving abilities.
  • Excellent written and verbal communication skills.
  • Demonstrated ability to lead, mentor, and collaborate with technical and business teams.
  • Ability to identify automation opportunities and deliver solutions that reduce manual effort and improve operational reliability.
  • Ability to participate in an on-call rotation as needed.
Preferred / Nice-to-Have Skills
  • Bachelor's degree in Information Technology, Computer Science, or a related field, or an equivalent combination of education and experience.
  • Experience with IBM OMEGAMON, including situation development, alerting, and monitoring customization.
  • Experience with GDPS and disaster recovery automation.
  • Knowledge of SMP/E maintenance and z/OS system programming concepts.
  • Experience with Ansible and automation using REST APIs.
  • Familiarity with mainframe modernization technologies and initiatives.
  • Knowledge of current mainframe automation standards, emerging technologies, and industry best practices.
About Seneca Resources
At Seneca Resources, we are more than just a staffing and consulting firm, we are a trusted career partner. With offices across the U.S. and clients ranging from Fortune 500 companies to government organizations, we provide opportunities that help professionals grow their careers while making an impact.
When you work with Seneca, you're choosing a company that invests in your success, celebrates your achievements, and connects you to meaningful work with leading organizations nationwide. We take the time to understand your goals and match you with roles that align with your skills and career path.
Our consultants and contractors enjoy competitive pay, comprehensive health, dental, and vision coverage, 401(k) retirement plans, and the support of a dedicated team who will advocate for you every step of the way.
Seneca Resources is proud to be an Equal Opportunity Employer, committed to fostering a diverse and inclusive workplace where all qualified individuals are encouraged to apply.

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