Senior Network Engineer

CesiumAstro

Austin, United States

October 30, 2025

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Senior Network Engineer

Austin, TX
Security & IT – IT /
On-site
Please Note: To conform with the United States Government Space Technology Export Regulations, the applicant must be a U.S. citizen, lawful permanent resident of the U.S., conditional resident, asylee or refugee (protected individuals as defined by 8 U.S.C. 1324b(a)(3)), or eligible to obtain the required authorizations from the U.S. Department of State.

At CesiumAstro, we are developers and pioneers of out-of-the-box communication systems for satellites, UAVs, launch vehicles, and other space and airborne platforms. We take pride in our dynamic and cross-functional work environment, which allows us to learn, develop, and engage across our organization. If you are looking for hands-on, interactive, and autonomous work, CesiumAstro is the place for you. We are actively seeking passionate, collaborative, energetic, and forward-thinking individuals to join our team.

We are looking to add a Senior Network Engineer with deep expertise in Fortinet systems to our team.

In this position, you will be responsible for the design, implementation, management, and continuous improvement of the enterprise network infrastructure. This role ensures high availability, performance, and security of network systems across the organization. The ideal candidate will possess deep technical expertise in network architecture, security, and troubleshooting, and will proactively contribute to technology planning and modernization efforts to design, implement, and support our fast-growing network infrastructure. You will lead network architecture initiatives, manage escalated support issues, and ensure seamless connectivity for guests and staff, focusing on performance, security, and reliability. 

JOB REQUIREMENTS AND MINIMUM QUALIFICATIONS

    • Minimum of 5 years of experience with network solutions, network switches, firewalls, and wireless access points.
    • Advanced, hands-on experience with Fortinet products: FortiGate, FortiSwitch, FortiAP, FortiClient, FortiManager, FortiEMS. Fortinet Secure SDWAN, FortiAnalyzer
    • Professional or Expert level network certification is required. Fortinet FCSS, Fortinet FCP, Fortinet NSE 4-8
    • Extensive experience designing, configuring, and managing enterprise-grade firewall solutions, with proficiency in network security architectures.
    • Strong understanding of routing protocols and network technologies (e.g., eBGP, iBGP, OSPF, IPSEC, trace route, Netflow).
    • Expertise in LAN/WAN administration, including configuring DHCP, DNS, VLANs, NAT, wireless technologies, and switches, with strong proficiency in network security integration.
    • Proficiency in network engineering and security firewall architecture; proficiency with Zero Trust frameworks.
    • Ability to produce accurate network diagrams and detailed design documentation for implementation.
    • Experience with architecting, designing, and troubleshooting complex LAN/WAN network solutions; proficiency with SD-WAN.
    • Required to maintain up-to-date expertise in modern security threats and defenses, integrating security into network designs; proficiency with NIST CSF, FIPS 140-2 or similar standards is highly desired.
    • Strong analytical and problem-solving skills.
    • Ability to work both independently and as part of a broader team to achieve objectives.
    • Able to clearly communicate detailed technical concepts in both oral and written formats.
    • Proven track record in guiding clients through the evaluation and selection of technical solutions to address business requirements in a consultative manner.
    • Must be willing to travel when needed.
CesiumAstro considers several factors when extending an offer, including but not limited to, the role and associated responsibilities, a candidate’s work experience, education/training, and key skills.  Full-time employment offers include company stock options and a generous benefits package including health, dental, vision, HSA, FSA, life, disability and retirement plans.  
 
CesiumAstro is an Equal Opportunity employer.  All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, disability, protected Veteran Status, or any other characteristic protected by applicable federal, state, or local law.

Please note: CesiumAstro does not accept unsolicited resumes from contract agencies or search firms. Any unsolicited resumes submitted to our website or to CesiumAstro team members not through our approved vendor list or Talent Acquisition will be considered property of CesiumAstro, and we will not be obligated to pay any referral fees.
We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.
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