Senior Network Engineer

About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You Will Be Doing: The Senior Network Engineer is a key member of the IS&T infrastructure team, responsible for architecting and managing enterprise-level network systems. This role involves leading network design initiatives, troubleshooting advanced issues, and ensuring the security and reliability of all network operations. This is an onsite role that reports directly to our Infrastructure Security Manager at our Everett, WA office. You Will: - Architect and deploy LAN/WAN, VPN, and cloud-based network solutions to support business needs - Monitor Fortinet based network performance, identify bottlenecks, and implement enhancements to improve speed and reliability - Configure and manage Fortinet firewalls, intrusion detection/prevention systems, and access controls to safeguard network assets - Resolve escalated network issues and provide Tier 3 support for complex problems - Maintain detailed network diagrams, configuration records, and performance reports - Lead network-related projects, including upgrades, migrations, and integrations with other IT systems - Work closely with system administrators, cybersecurity teams, and vendors to ensure seamless operations - Train and mentor junior network engineers and contribute to team development Required Skills: - 8+ years of network engineering experience - Deep knowledge of routing and switching protocols (BGP, OSPF, EIGRP), network hardware (Fortinet, Cisco, Juniper), and cloud networking (AWS, Azure, GCP) - Experience with network security tools and protocols, including VPNs, firewalls, and NAC systems - Strong problem-solving abilities (layers 2 & 3, WiFi setup and tuning) and capacity planning experience - CCNP, CCIE, or equivalent certifications preferred Benefits Our total compensation package includes benefits, including but not limited to: • Medical, Dental, and Vision plans for employees and their families • 31 Days of PTO (21 vacation days and 10 sick days) • 10 Paid holidays, plus company-wide winter break • Up to 5% employer 401(k) match • Short term disability, long term disability, and life insurance • Paid parental leave and support (up to 16 weeks) • Annual wellness stipend Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.