Sr. Infrastructure Engineer Mainframe

Job description

TEKsystems is seeking a Senior Infrastructure Engineer - Mainframe - for one of our clients.

The role is fully remote but requires working the Pacific Time Zone.
Please review the following required skills and only apply if relevant:
Mainframe Operations & Tools Expertise - This role requires deep hands-on experience with mainframe environments, including system monitoring, job scheduling, troubleshooting, and support.

Proficiency with tools such as ESP Scheduler, Endevor, ACF2, CICS, DB2, MQ, and COBOL is essential.

The engineer will be responsible for ensuring the daily health, stability, and performance of mainframe systems and tools, as well as supporting key applications and integrations.
Incident, Problem, and Change Management - The engineer must manage service requests and incidents from application teams, provide hands-on troubleshooting, and coordinate escalations with managed service providers.

Experience in managing incident, problem, and change processes in a large-scale enterprise environment is critical to minimize risk and downtime during upgrades and changes.
Mainframe Modernization & Integration - Supporting real-time integrations and web services that connect distributed platforms to the mainframe is a key part of the role.

The engineer will participate in modernization efforts, helping transition legacy workloads toward more agile, integrated, and automated approaches.

Familiarity with infrastructure automation, DevOps practices, and web services is highly valued.
Description
Summary
The Sr. Infrastructure Engineer will play a critical role in the Mainframe Pod of our client's Infrastructure & Operations team.

This position requires a strong focus on Mainframe Operations while serving as a key conduit between application teams and our managed service provider.

The successful candidate will ensure reliable day-to-day operations, lead coordination of incident and request handling, and contribute to roadmap and modernization initiatives.
This role demands both hands-on technical expertise in mainframe environments and collaborative leadership skills to align stakeholders and keep systems running securely and efficiently.
Responsibilities
• Act as a primary contact for mainframe operations, overseeing daily health, stability, and performance of mainframe systems and tools.
• Serve as the bridge between application teams and the managed service provider, ensuring clear communication, timely resolution of issues, and effective coordination of changes and upgrades.
• Manage Service Requests and Incidents from application teams, providing hands-on troubleshooting and escalating to service providers when necessary.
• Manage and monitor ESP Scheduler activities, including scheduling, execution, and troubleshooting of batch and on-demand workloads.
• Partner with application teams to optimize and maintain ESP job schedules, calendars, and dependencies.
• Coordinate and oversee mainframe application upgrades and changes, partnering with app teams and the service provider to minimize risk and downtime.
• Provide primary support for key applications such as Endevor, Terminal Emulator, Control-D and related tools.
• Support audit and compliance activities, ensuring proper documentation and adherence to regulatory standards.
• Deliver architectural input and technical evaluations of applications, guiding app teams on mainframe-related best practices.
• Support real-time integrations and web services that connect distributed platforms to the mainframe.
• Participate in and influence mainframe modernization efforts, helping transition legacy workloads toward more agile, integrated, and automated approaches.
Education/Experience/Skills Preferred
• Degree in Computer Science, Information Systems or other related field, OR relevant accredited technical certification, OR equivalent work experience.
• 6-9 years of cumulative, relevant experience
• Background in financial service is a plus.
• Agile/Scrum team experience.
• Exposure to infrastructure automation and DevOps practices.
Skills and Abilities Required
• Strong working knowledge of mainframe tools and technologies, including ESP Scheduler, Endevor, ACF2, CICS, DB2, MQ, COBOL.
• Proven experience in mainframe operations—system monitoring, job scheduling, troubleshooting, and support.
• Demonstrated ability to work across teams, serving as the liaison between service providers and internal app teams.
• Experience managing incident, problem, and change processes in a large-scale enterprise environment.
• Familiarity with web services and real-time mainframe integrations.
• Excellent communication, coordination, and documentation skills.
Pay and Benefits
The pay range for this position is $60.00 - $65.00/hr.
Eligibility requirements apply to some benefits and may depend on your job classification and length of employment.

Benefits are subject to change and may be subject to specific elections, plan, or program terms.

If eligible, the benefits available for this temporary role may include the following:
• Medical, dental & vision • Critical Illness, Accident, and Hospital • 401(k) Retirement Plan – Pre-tax and Roth post-tax contributions available • Life Insurance (Voluntary Life & AD&D for the employee and dependents) • Short and long-term disability • Health Spending Account (HSA) • Transportation benefits • Employee Assistance Program • Time Off/Leave (PTO, Vacation or Sick Leave)
Workplace Type
This is a fully remote position.
Application Deadline
This position is anticipated to close on Oct 24, 2025.
h4>About TEKsystems:
We're partners in transformation.

We help clients activate ideas and solutions to take advantage of a new world of opportunity.

We are a team of 80,000 strong, working with over 6,000 clients, including 80% of the Fortune 500, across North America, Europe and Asia.

As an industry leader in Full-Stack Technology Services, Talent Services, and real-world application, we work with progressive leaders to drive change.

That's the power of true partnership.

TEKsystems is an Allegis Group company.



The company is an equal opportunity employer and will consider all applications without regards to race, sex, age, color, religion, national origin, veteran status, disability, sexual orientation, gender identity, genetic information or any characteristic protected by law.
About TEKsystems and TEKsystems Global Services
We’re a leading provider of business and technology services.

We accelerate business transformation for our customers.

Our expertise in strategy, design, execution and operations unlocks business value through a range of solutions.

We’re a team of 80,000 strong, working with over 6,000 customers, including 80% of the Fortune 500 across North America, Europe and Asia, who partner with us for our scale, full-stack capabilities and speed.

We’re strategic thinkers, hands-on collaborators, helping customers capitalize on change and master the momentum of technology.

We’re building tomorrow by delivering business outcomes and making positive impacts in our global communities.

TEKsystems and TEKsystems Global Services are Allegis Group companies.

Learn more at TEKsystems.com.

The company is an equal opportunity employer and will consider all applications without regard to race, sex, age, color, religion, national origin, veteran status, disability, sexual orientation, gender identity, genetic information or any characteristic protected by law.

Required Skill Profession

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