Network Engineer III E3 / COS-83

Network Engineer III

Location: Colorado Springs, Colorado (Onsite)

Employment Type: Contract

Candidates must be able to obtain and/or maintain a Department of Defense Secret clearance as a condition and continuation of employment.

Role Overview

In this role, the candidate will support the implementation, maintenance, and troubleshooting of enterprise network infrastructure. This position is responsible for ensuring reliable connectivity across LAN/WAN environments while collaborating with senior engineers on network design and optimization. The ideal candidate brings networking fundamentals and a hands-on approach to supporting production environments.

Key Responsibilities

• Configure and maintain network devices including routers, switches, and firewalls from vendors such as Cisco and Juniper Networks.
• Monitor network performance and availability, proactively identifying and resolving connectivity, latency, and packet loss issues.
• Implement and support core networking technologies including VLANs, routing protocols such as OSPF and BGP, and basic network security controls.
• Troubleshoot network incidents across LAN/WAN environments, performing root cause analysis and documenting resolutions.
• Collaborate with cross-functional IT teams to support network changes, upgrades, and infrastructure projects.
• Travel to remote locations to lead and perform network installations, independently perform troubleshooting, and provide status updates to program personnel.
• Support critical activities outside of standard business hours, including evenings and weekends, as needed.

Required Qualifications

Experience: Generally has 7+ years of related experience. Must be a proven network engineer with hands-on experience and knowledge of network design, development, and testing methodologies.

Technical Skills:

• Understanding of the OSI Model, TCP/IP, and routing protocols BGP and OSPF.
• Network traffic analysis, diagnostic, and troubleshooting skills.
• Firewall experience, especially with Juniper, Fortinet, and Palo Alto.
• Experience in UDP multicast, SONET, MSPP, VLANs, GRE Tunnels, and TCP/IP network designs.
• Hands-on experience with multi-vendor switching/routing (Juniper, Cisco), WAN optimizers, and optical transport equipment.
• Effective communicator with excellent writing and presentation skills using Microsoft Office products.
• Understanding of standard DOD security practices such as STIG compliance and system accreditation implementation efforts.

Certifications:

• An IAT Level II 8570 Compliant Certification is required (e.g., Security+, GSEC, SCNP, SSCP, CISSP, CISA, GSE, SCNA).
• A CCNA or JNCIA certification is required.

Benefits

Apex offers a range of supplemental benefits, including medical, dental, vision, life, disability, and other insurance plans that offer an optional layer of financial protection. We offer an ESPP (employee stock purchase program) and a 401K program which allows you to contribute typically within 30 days of starting, with a company match after 12 months of tenure. Apex also offers a HSA (Health Savings Account on the HDHP plan), a SupportLinc Employee Assistance Program (EAP) with up to 8 free counseling sessions, a corporate discount savings program and other discounts. In terms of professional development, Apex hosts an on-demand training program, provides access to certification prep and a library of technical and leadership courses/books/seminars once you have 6+ months of tenure, and certification discounts and other perks to associations that include CompTIA and IIBA. Apex has a dedicated customer service team for our Consultants that can address questions around benefits and other resources, as well as a certified Career Coach. You can access a full list of our benefits, programs, support teams and resources within our 'Welcome Packet' as well, which an Apex team member can provide.

Apex Systems is an equal opportunity employer. We do not discriminate or allow discrimination on the basis of race, color, religion, creed, sex (including pregnancy, childbirth, breastfeeding, or related medical conditions), age, sexual orientation, gender identity, national origin, ancestry, citizenship, genetic information, registered domestic partner status, marital status, disability, status as a crime victim, protected veteran status, political affiliation, union membership, or any other characteristic protected by law. Apex will consider qualified applicants with criminal histories in a manner consistent with the requirements of applicable law.

Apex uses a virtual recruiter as part of the application process. Click here for more details.

If you have visited our website in search of information on employment opportunities or to apply for a position, and you require an accommodation in using our website for a search or application, please contact our Employee Services Department at [email protected] or View phone number on click.appcast.io.

Everforth Apex is a world-class IT services company that serves thousands of clients across the globe. When you join Everforth Apex, you become part of a team that values innovation, collaboration, and continuous learning. We offer quality career resources, training, certifications, development opportunities, and a comprehensive benefits package. Our commitment to excellence is reflected in many awards, including ClearlyRateds Best of Staffing® in Talent Satisfaction in the United States and Great Place to Work® in the United Kingdom and Mexico.

Everforth Apex uses a virtual recruiter as part of the application process. Click here for more details. By applying for this job, you agree to receive calls, AI-generated calls, text messages, or emails from Everforth Apex and its affiliates, and contracted partners. Frequency varies for text messages. Message and data rates may apply. Carriers are not liable for delayed or undelivered messages. You can reply STOP to cancel and HELP for help. You can access our privacy policy at

Everforth Apex Benefits Overview: Everforth Apex offers a range of supplemental benefits, including medical, dental, vision, life, disability, and other insurance plans that offer an optional layer of financial protection. We offer an ESPP (employee stock purchase program) and a 401K program which allows you to contribute typically within 30 days of starting, with a company match after 12 months of tenure. Everforth Apex also offers a HSA (Health Savings Account on the HDHP plan), a SupportLinc Employee Assistance Program (EAP) with up to 8 free counseling sessions, a corporate discount savings program and other discounts. In terms of professional development, Everforth Apex hosts an on-demand training program, provides access to certification prep and a library of technical and leadership courses/books/seminars once you have 6+ months of tenure, and certification discounts and other perks to associations that include CompTIA and IIBA. Everforth Apex has a dedicated customer service team for our Consultants that can address questions around benefits and other resources, as well as a certified Career Coach. You can access a full list of our benefits, programs, support teams and resources within our 'Welcome Packet' as well, which an Everforth Apex team member can provide.

Everforth Apex Systems is an equal opportunity employer. We do not discriminate or allow discrimination on the basis of race, color, religion, creed, sex (including pregnancy, childbirth, breastfeeding, or related medical conditions), age, sexual orientation, gender identity, national origin, ancestry, citizenship, genetic information, registered domestic partner status, marital status, disability, status as a crime victim, protected veteran status, political affiliation, union membership, or any other characteristic protected by law. Everforth Apex will consider qualified applicants with criminal histories in a manner consistent with the requirements of applicable law.

If you require an accommodation under the Americans with Disabilities Act to participate in an interview with a virtual recruiter or to use our website for a search or application, please contact our Benefits Department at [email protected] or View phone number on click.appcast.io. Please note that this contact information is strictly to be used for medical ADA accommodations and that no other inquiries will be answered.

UnitedHealthcare creates and publishes the Transparency in Coverage Machine-Readable Files on behalf of Everforth Apex Systems.