Position Title: IT Infrastructure Engineer / Mainframe Systems Manager

Location: New York, NY

Clearance Requirements: None

Position Status: Full Time

Salary:170k with benefits

Position Description:

Seneca Resources is seeking an experienced IT Infrastructure Engineer / Mainframe Systems Manager to support a large public sector organization in New York, NY. This leadership role is ideal for a seasoned infrastructure professional with deep expertise in enterprise mainframe operations, IBM z/OS environments, datacenter infrastructure, disaster recovery, and enterprise systems management.

The selected candidate will lead the Mainframe Systems team responsible for maintaining the stability, performance, security, and availability of mission-critical enterprise infrastructure. This role requires strong technical leadership, strategic planning capabilities, and hands-on experience managing large-scale infrastructure operations in highly complex environments.

This position offers the opportunity to drive modernization initiatives, oversee enterprise infrastructure operations, lead high-impact technical projects, and collaborate across multiple technical and business teams in a mission-driven environment.

Key Responsibilities:

Infrastructure & Operations Leadership

Lead and manage enterprise mainframe infrastructure operations and daily system activities.
Oversee IBM mainframe systems, z/OS administration, enterprise storage, disaster recovery operations, and related infrastructure technologies.
Ensure high availability, operational stability, and SLA compliance for critical production systems.
Provide leadership for infrastructure troubleshooting, incident response, root cause analysis, and operational support activities.
Coordinate 24/7 operational support and scheduled maintenance activities as needed.

Team Management & Collaboration

Supervise and mentor technical infrastructure staff while establishing operational goals and performance expectations.
Coordinate cross-functional infrastructure initiatives with internal technology teams and business stakeholders.
Serve as a technical escalation point for complex infrastructure issues and enterprise support activities.

Performance Monitoring & Capacity Planning

Monitor enterprise infrastructure performance and system utilization trends.
Conduct capacity planning and performance analysis for enterprise systems and datacenter environments.
Recommend and implement infrastructure improvements to support scalability, reliability, and operational efficiency.

Project & Technology Management

Lead infrastructure modernization projects, including hardware refreshes, software upgrades, and enterprise technology implementations.
Develop project plans, timelines, and implementation strategies for infrastructure initiatives.
Research, evaluate, and recommend emerging infrastructure technologies and enterprise solutions.
Ensure enterprise environments remain aligned with current security standards and supported technologies.

Vendor & Documentation Management

Manage vendor relationships related to infrastructure hardware, software, maintenance, and support services.
Maintain accurate technical documentation, operational procedures, and infrastructure standards.
Support budget forecasting and infrastructure lifecycle planning activities.

Required Skills/Education:

Required Qualifications:

Bachelor’s degree in Computer Science, Engineering, Information Technology, or related technical field with 4+ years of relevant infrastructure engineering experience; OR
Bachelor’s degree in any field with 8+ years of relevant infrastructure engineering experience; OR
Equivalent combination of education and experience.
12+ years of experience supporting enterprise infrastructure operations, datacenter operations, or complex IT infrastructure environments.
12+ years of experience with enterprise systems monitoring, troubleshooting, operational support, and infrastructure management.
8+ years of experience leading infrastructure-related projects, implementations, and technical coordination efforts.
8+ years of experience with infrastructure performance monitoring, capacity planning, and operational analysis.
8+ years of experience creating and maintaining technical documentation, operational procedures, and infrastructure standards.
Experience working with cross-functional infrastructure and enterprise support teams.
Ability to support critical systems in a 24/7 operational environment.

Preferred Qualifications:

20+ years of experience managing enterprise infrastructure within large-scale environments.
10+ years of experience supporting IBM Mainframe and z/OS environments.
Strong experience with enterprise storage systems, disaster recovery operations, and datacenter infrastructure.
Experience supporting AIX, Linux, or Unix enterprise environments.
Proven expertise in infrastructure problem determination, root cause analysis, and issue resolution.
Strong leadership, communication, organizational, and stakeholder management skills.
Experience leading enterprise infrastructure modernization initiatives and strategic technology planning.

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.

Seneca Resources

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