Senior Network Engineer, Denver

We are looking for a dynamic and motivated Senior Network Engineer to design, implement and maintain our network infrastructure across on‑premises data centres and cloud environments. Ideally, the candidate will work from our Denver NOC and is located in the same time zone.

• Act as the point of contact for technical tasks.
• Configure and install network devices and services – routers, switches, firewalls, VPNs, VXLAN, etc. – ensuring stable, scalable and secure architectures.
• Design and implement Fortinet‑based security solutions (Forti Gate, Forti Manager, Forti Analyzer) and monitor and optimize their performance.
• Operate and troubleshoot routing protocols such as OSPF and BGP; support Layer 2 technologies including VLANs, STP and VXLAN.
• Develop network automation and remediation scripts in Python and maintain monitoring scripts using SNMP.
• Use tools such as Wireshark and tcpdump for troubleshooting and fault analysis.

• Install and maintain datacenter network racks and structured cabling, performing cable management and ensuring wiring is documented and colour‑coded for easy fault detection.
• Manage power sources and environmental controls in the datacenter facility; liaise with facilities teams on AC/DC power, HVAC and rack layout.

• Implement next‑generation firewalls, VPNs and intrusion prevention systems; conduct security assessments and vulnerability scans.
• Monitor network performance and capacity; analyse traffic using network monitoring tools such as Wireshark, Solar Winds or PRTG; plan upgrades and patches.
• Participate in on‑call rotation and respond to after‑hours incidents and deployment requests.

• Document network designs, configurations, policies and procedures; maintain asset inventories and cabling diagrams.
• Follow ITIL‑based change, incident and problem management processes; help develop runbooks and knowledge articles.

• Work closely with system administrators, security engineers and application teams to support new services and troubleshoot complex issues.
• Provide Level 2/3 support, mentor junior staff and assist with infrastructure projects.

• Demonstrate understanding of network security and industry best practices.
• Follow industry trends, emerging technologies and best practices.
• Willingness to upskill and pursue relevant certifications for professional development.
• Ability to work independently and thrive in a vibrant working environment.
• Ability to work unsupervised and think creatively to solve complex problems.
• Excellent communication skills.
• Ability to work under pressure.
• Availability for on‑call and overtime whenever necessary.
• Possesses the right to work in the USA.
• Willingness to support after‑hours or emergency work and to remain on call.

• Proven hands‑on network engineering experience; CCNP level knowledge or higher preferred.
• Experience working with Cisco products, ideally Firepower (NGFW) and Cisco FMC.
• Demonstrated experience with Fortinet products (Forti Gate, Forti Manager, Forti Analyzer); NSE7 certification desirable.
• Exposure to Azure networking or willingness to obtain the Azure Network Engineer Associate certification.

We welcome candidates from all backgrounds, especially those underrepresented in our industry, including women, people with disabilities, and LGBTQ+ individuals. Possession of the right to work in the USA is required.