Lead Systems Network Engineer

Oasys International, LLC; Chicago (IL); Hybrid; USD 120,000 - 160,000; Full time

Benefits offered by this job

Hybrid work model

Job summary

Oasys International LLC is seeking a Lead Systems/Network Engineer to provide technical leadership for the USMEPCOM ENLIST enterprise network. You will oversee enterprise systems, OS platforms, virtualization, storage, and cloud infrastructure, ensuring secure, resilient, and highly available operations.

This role requires coordinating outage response and alignment with DoD standards. The position demands hands-on engineering across Windows/UNIX/Linux, VMware ESXi, SANs, and cloud environments,

Qualifications

• Bachelor's degree in Information Technology, Computer Science, Information Systems, Cybersecurity, or related field.
• 5+ years leading enterprise IT teams across physical/virtual servers, Windows/UNIX/Linux, databases, ESXi, SANs, and cloud infrastructure.
• Experience with DISA network transport, cloud platforms, VDI, and enterprise security across multiple locations.

Responsibilities

• Lead enterprise systems engineering, network operations, and O&M across the USMEPCOM environment.
• Serve as technical service owner for enterprise infrastructure with accountability for availability and SLAs.
• Direct outage response team, major incidents, disaster recovery, and COOP activities.
• Guide infrastructure engineering, testing, integration, and modernization efforts.
• Apply RMF and DoD cybersecurity practices throughout infrastructure activities.
• Mentor dispersed teams supporting enterprise operations.

Skills

IT leadership

Windows

UNIX/Linux

VMware ESXi

SAN

Cloud infrastructure

Scripting

RMF

Outage response

Network engineering

Firewall

Cybersecurity

Education

Bachelor's degree in IT/CS/IS or related field

Tools

VMware ESXi

Windows Server

Job description

Who We Are: Oasys International LLC (Oasys) is a growing federal government contractor delivering innovative technology, engineering, and professional services in support of critical missions across the civilian, defense, and homeland security communities. Our continued growth and commitment to excellence have earned Oasys recognition on the Inc. 5000 list of America's fastest-growing private companies for five consecutive years and as a Best Place to Work in Virginia for the past two years.

At Oasys, our people are at the heart of everything we do. Our team of talented technologists, engineers, consultants, and subject-matter experts works alongside our federal customers to solve complex challenges, modernize critical systems, and make a meaningful impact on the missions we support.

What makes Oasys different is the experience we strive to create for our employees. We offer the opportunity to do meaningful work while being part of a collaborative, people-focused organization where your ideas, expertise, and contributions are valued. We believe great people do their best work when they have opportunities to grow, are recognized for what they bring to the team, and have the flexibility and support needed to build a rewarding career.

Whether you are looking to deepen your technical expertise, take on new challenges, or grow into your next leadership opportunity, Oasys is a place where you can build your career while contributing to missions that matter.

Join our talent pipeline! Oasys is actively connecting with qualified professionals as we build our team for an anticipated upcoming contract opportunity supporting the USMEPCOM ENLIST program.

Position Summary:

Oasys is seeking an experienced Lead Systems/Network Engineer to provide technical leadership for enterprise systems and network operations supporting the U.S. Military Entrance Processing Command (USMEPCOM) Enterprise Network for Lifecycle, Information Support, and Technology (ENLIST) program.

The Lead Systems/Network Engineer will oversee enterprise systems and network administration, operations and maintenance (O&M), and related infrastructure services across the USMEPCOM environment. As an Oasys technical lead and infrastructure service owner, this individual will help ensure enterprise platforms achieve required service levels while remaining secure, reliable, resilient, and highly available.

This role provides hands‑on engineering leadership across enterprise servers, Windows and UNIX/Linux operating systems, databases, virtualization, storage, collaboration platforms, cloud environments, and network infrastructure.

The Lead Systems/Network Engineer will also direct Outage Response Team (ORT) activities, coordinating major incident response, service restoration, disaster recovery, Continuity of Operations (COOP), and technical communications during enterprise outages.

Working directly with USMEPCOM stakeholders, Oasys program leadership, cybersecurity teams, engineers, vendors, DISA, and external partners, the Lead Systems/Network Engineer will maintain an interoperable, compliant, mission‑ready enterprise infrastructure.

Oasys is seeking a seasoned technical leader with deep enterprise infrastructure and network engineering experience, strong troubleshooting judgment, and demonstrated success leading distributed technical teams in complex Department of Defense environments.

Primary Responsibilities:

• Lead enterprise systems engineering, network operations, systems administration, and O&M activities across the USMEPCOM environment.
• Act as Oasys International's technical service owner for enterprise infrastructure services, with accountability for availability, performance, reliability, and service‑level objectives.
• Organize and direct technical personnel supporting the operation, sustainment, and modernization of USMEPCOM network and infrastructure environments.
• Provide engineering leadership for Windows and UNIX/Linux platforms, physical and virtual servers, databases, VMware ESXi, Storage Area Networks (SANs), collaboration technologies, enterprise applications, and cloud infrastructure.
• Configure, validate, integrate, troubleshoot, and administer enterprise hardware, software, operating systems, and infrastructure platforms while preserving interoperability with legacy environments.
• Guide infrastructure engineering, systems integration, interface analysis, hardware/software testing, implementation, and modernization activities.
• Apply Risk Management Framework (RMF) principles and DoD cybersecurity practices throughout infrastructure engineering and operations.
• Direct the Outage Response Team (ORT), including major incident response, service restoration, disaster recovery, and COOP activities.
• Serve as a senior technical point of contact during significant outages and coordinate resolution with Government leadership, vendors, DISA, external agencies, and other mission partners.
• Drive outage resolution activities and provide clear, timely technical status and recovery updates to Government and Oasys program leadership.
• Create and maintain outage‑response procedures, Incident Response Plans, disaster‑recovery documentation, runbooks, and operational playbooks.
• Conduct recurring reviews of Incident Response Plans, inventories, procedures, and operational documentation to keep recovery processes current and executable.
• Lead and mentor geographically dispersed systems and network engineering personnel supporting enterprise operations.
• Assess performance, capacity, availability, and infrastructure health; identify opportunities for automation, resiliency improvements, modernization, and operational efficiency.
• Engineer and support cloud services, virtual desktop infrastructure (VDI), enterprise networking, firewall technologies, secure communications, and modernization initiatives.
• Promote continuous improvement and disciplined engineering practices while maintaining compliance with Federal, DoD, and USMEPCOM operational and cybersecurity standards.

Education/Experience Requirements:

• Bachelor's degree in Information Technology, Computer Science, Information Systems, Cybersecurity, Network Engineering, Engineering, or a related technical field is preferred.
• At least five (5) years of recent experience leading or managing enterprise IT teams supporting physical and virtual servers, Windows and UNIX/Linux operating systems, databases, VMware ESXi, SAN technologies, enterprise applications, scripting, collaboration platforms, and enterprise security across geographically dispersed locations.
• At least one (1) year of recent experience with:
• Leading network engineering personnel and coordinating enterprise outage and service‑restoration activities.
• Supporting DISA network transport services and solutions.
• At least five (5) years of recent experience supporting:
• Cloud‑based enterprise platforms and cloud infrastructure.
• Virtual desktop infrastructure (VDI) environments.
• Enterprise systems and network administration, including major incident and outage response.
• Enterprise network operations for programs comparable in size, scope, and technical complexity to ENLIST.
• At least six (6) years of recent experience supporting large‑scale enterprise network systems and subsystems, including LAN, WAN, MPLS, BGP, availability management, troubleshooting, performance analysis, and infrastructure optimization.
• At least three (3) years of experience with:
• IPv4 and IPv6 protocol stacks.
• Planning and executing local and long‑haul communications solutions.
• Configuring, supporting, and troubleshooting enterprise firewall appliances, rulesets, and security solutions.

Certifications Required:

• ITIL 4 Foundation certification or higher.
• At least two network‑focused certifications, such as Cisco Certified Network Associate (CCNA), CompTIA Network+, or equivalent.
• Microsoft Certified Solutions Expert (MCSE) certification or applicable Microsoft enterprise technology certification.
• Cisco Certified Internetwork Expert (CCIE) or Cisco Certified Design Expert (CCDE) certification.

One of the following security/cloud credentials:

• CISSP‑ISSAP (Information Systems Security Architecture Professional).
• CISSP‑ISSEP (Information Systems Security Engineering Professional).
• CCSP (Certified Cloud Security Professional).

Clearance Requirement:

• Must have an Active Secret Clearance

Work Location:

• USMEPCOM Headquarters in North Chicago, Illinois - Hybrid

Oasys is proud to be an equal opportunity employer for all protected groups, including protected veterans and individuals with disabilities.