Mainframe Engineer

Senior Mainframe Automation Engineer

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.

• 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.