Senior Network Engineer

Apex Systems, LLC; Greenwood Village, Northern (CO, KY); Hybrid; USD 83,000 - 103,000; Full time

Job summary

Everforth Apex Systems in Greenwood Village, CO is seeking a mid- to senior Network Engineer to design, implement, and optimize a large, multi-site enterprise network. The role emphasizes SD-WAN, Cisco routing and switching, data center fabric, and secure, scalable connectivity.

You will manage VPNs, NAC, load balancers, on-call escalation, and hybrid cloud links (AWS Direct Connect, Azure ExpressRoute). Onsite presence is required with a collaborative, problem-solving mindset and a focus on

Qualifications

• Experience implementing SD-WAN in enterprise environments.
• Cisco routing and switching expertise (EIGRP/BGP/MPLS).
• Experience with Aruba Wireless and Clearpass.
• Hybrid cloud connectivity (AWS Direct Connect, Azure ExpressRoute).
• Strong troubleshooting and on-call readiness.
• Professional-level network engineering certification preferred (CCNP/CCIE).

Responsibilities

• Lead the design, deployment, and optimization of campus, data center, and WAN networks.
• Architect and maintain secure, scalable network solutions across routing, switching, and data center fabrics.
• Own the SD-WAN infrastructure design, deployment, optimization, and troubleshooting.
• Administer next-generation firewalls; configure policies and threat defense.
• Implement and support VPN solutions (remote access, site-to-site).
• Maintain NAC using TACACS+/RADIUS.
• Manage and optimize enterprise load balancers for application delivery.
• Provide escalation support for complex incidents and participate in on-call rotation.

Skills

SD-WAN architecture

Cisco routing & switching

EIGRP/BGP/MPLS

Firewall & Aruba/Clearpass

Hybrid cloud connectivity

Network automation (Python/Ansible)

Tools

Cisco Routers

Cisco Switches

Azure ExpressRoute

AWS Direct Connect

TACACS+/RADIUS

SolarWinds

LogicMonitor

ThousandEyes

VPN Solutions

Job description

# Senior Network EngineerApply**Job#: 3042701****Job Description:**Senior Network Engineer**Location:** Greenwood Village, Colorado (Onsite)**Alternate Location:** Santa MonicaRole OverviewWe are seeking a mid-level to senior Network Engineer to join our technology operations team. This is a hands-on technical role responsible for the design, implementation, optimization, and support of a complex, multi-site enterprise network. The ideal candidate will have a proactive, results-oriented mindset, take initiative to solve problems, and adapt to sudden changes in priorities. This role requires working with an architect's perspective within a Cisco-centric environment.Key Responsibilities* Lead the design, deployment, and optimization of enterprise campus and data center networks, including WAN connectivity.* Architect and maintain secure, scalable, and highly available network solutions across routing, switching, and data center fabric platforms.* Own the software-defined WAN (SD-WAN) infrastructure, including design, deployment, optimization, and troubleshooting.\\* Administer next-generation firewalls, including policy configuration and threat defense.* Implement and support VPN solutions, including remote access and site-to-site tunnels.* Maintain network access control (NAC) using AAA frameworks like TACACS+ and RADIUS.* Manage and optimize enterprise load balancers for application delivery.* Provide escalation support for complex network incidents and participate in an on-call rotation.* This person must be comfortable with a hybrid schedule, requiring onsite presence.Required Qualifications**Technical Skills:*** Proven expertise in implementing and working with SD-WAN architecture.* Experience in a Cisco-centric shop, including Cisco routers and switches.* Strong background in enterprise routing and switching (EIGRP, BGP, MPLS).* Experience with firewalls and WiFi technologies, specifically Aruba Wireless and Clearpass.* Experience with hybrid cloud connectivity (e.g., AWS Direct Connect, Azure ExpressRoute).* Deep experience with advanced routing concepts including route redistribution and VRF-Lite.* Proficiency with network management and automation platforms.**Soft Skills:*** Must be adaptable and able to handle sudden changes and project pivots.* Demonstrates a \"go-getter\" attitude, proactively taking action to resolve issues without waiting for direction.* Collaborates effectively with internal partners to deliver reliable and secure network services.Preferred Qualifications* Active professional-level network engineering certification (e.g., CCNP in Enterprise, Security, or Data Center).* Wireless networking professional certification (e.g., Aruba Certified Mobility Professional).* Load balancer administration or consultant certification.* Experience supporting mid-to-large enterprise environments with 500+ users.* Experience with network monitoring and observability platforms (e.g., SolarWinds, LogicMonitor, ThousandEyes).* Network automation experience using scripting or configuration management tools (e.g., Python, Ansible). *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 https://www.apexsystems.com/privacy-policy**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 [e-mail] or 804-523-8228. 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.***Employee Type:** Contract**Location:** Greenwood Village, CO, US**Job Type:****Date Posted:** September 26, 2026**Pay Range:** $60 - $75 per hour