Network Security Engineer
- Salary
- $100,000 - $258,000
- Level
- Mid
Not stated in the posting: work type, visa.
Open. First seen 2 October 2026.
About the role
SpaceXSI's standard text
SpaceX was founded under the belief that a future where humanity is out exploring the stars is fundamentally more exciting than one where we are not. Today, SpaceX is actively developing the technologies to make this possible, with the ultimate goal of making life multiplanetary and expanding consciousness to the stars.
SpaceXSI is building Super Intelligence to help humanity understand the universe. Our teams are building the full Super Intelligence stack: from our Colossus supercomputers, to Grok models, to our suite of applications, including Grok Bot, Grok Build, Grok Imagine, Grok Voice, and X. We're creating a powerful flywheel where more compute trains better models, better models power more useful products, and what we learn from people using those products shapes what we build next.
ABOUT THE ROLE:
We are seeking a seasoned Senior Network Security Engineer to join our dynamic security team. The ideal candidate will possess deep expertise in network security technologies, focusing on switching and routing systems within cloud-native and AI-focused infrastructure. You will thrive in a fast-paced, challenging environment, demonstrating adaptability, excellent multitasking skills, and the drive to tackle complex security issues independently while ensuring robust protection for our innovative technologies.
RESPONSIBILITIES:
- Serve as a subject matter expert in network security, particularly firewalls, VPNs, IDS/IPS, routing protocols (e.g., BGP, OSPF), and switching technologies.
- Manage and update firewall configurations across our enterprise network to align with operational and security needs.
- Deploy new firewalls, switches, routers, and network security devices in response to evolving threats and demands.
- Develop and propose innovative network security solutions to address operational challenges in routing and switching environments.
- Enhance security processes through thorough documentation and change management.
- Act as the primary resolver for complex network security issues, including escalation support.
- Ensure network security systems, switches, and routers are up-to-date with patches, firmware, and maintenance.
- Monitor and respond to security events in cloud environments (e.g., AWS, GCP, Azure, Datacenter), with emphasis on network traffic analysis.
BASIC QUALIFICATIONS:
- Bachelor's degree in Computer Science, Cybersecurity, Information Systems, or a related field.
- 4+ years of experience in network security engineering, with hands-on focus on switching and routing.
- Certifications like CISA, CRISC, CGEIT, Security+, CASP+, or similar preferred.
- Strong understanding of network security principles, protocols (e.g., TCP/IP, VLANs, ACLs), and best practices for secure routing and switching.
- Proficiency in at least one major cloud platform (AWS, GCP, or Azure) and its network security services (e.g., VPCs, Security Groups).
- Experience with network analysis tools such as Wireshark, tcpdump; and vendors including Cisco, Juniper, Palo Alto Networks.
- Familiarity with scripting languages (e.g., Python, Bash) for automation of network security tasks.
PREFERRED SKILLS AND EXPERIENCE:
- Relevant network-specific certifications (e.g., CCNP Security, CCIE Security, JNCIP-SEC, PCNSE).
- Experience in multi-cloud environments and Infrastructure as Code tools like Terraform for network provisioning.
- Knowledge of DevSecOps practices tailored to network security integration.
- Experience building custom tools or integrations for enhancing network security operations.
- Interest in leveraging AI for network threat detection and automation.
- Contributions to open-source projects in network security or related tools.
ITAR REQUIREMENTS:
To conform to U.S. Government export regulations, applicant must be a (i) U.S. citizen or national, (ii) U.S. lawful, permanent resident (aka green card holder), (iii) Refugee under 8 U.S.C. § 1157, or (iv) Asylee under 8 U.S.C. § 1158, or be eligible to obtain the required authorizations from the U.S. Department of State. Learn more about the ITAR here.
COMPENSATION AND BENEFITS:
$100,000 - $258,000 USD
Base salary is just one part of our total rewards package at SpaceXSI, which also includes equity, comprehensive medical, vision, and dental coverage, access to a 401(k) retirement plan, short & long-term disability insurance, life insurance, and various other discounts and perks.
SpaceXSI's standard text
SpaceXSI is an equal opportunity employer. For details on data processing, view our Recruitment Privacy Notice.
What this role asks for
Standard for security roles
AWS · Cybersecurity · Python
Common in security postings at any company.
77% of this description is written for the role. The rest is SpaceXSI's standard text, folded away below.
Read against SpaceXSI's other open postings on this site.
The team: Information Security HIRES STEADILY
This role is one of 13 open in Information Security. 5 were posted in the last 30 days and the oldest in November: a team that hires all year rather than one being built.
WHAT THE TEAM WORKS WITH, ACROSS ITS POSTINGS
AWS (11 of 13), GCP (11 of 13), CI/CD (10 of 13), Cybersecurity (10 of 13), Azure (9 of 13), IAM (9 of 13), Python (9 of 13)
OTHER ROLES ON THIS TEAM
- Infrastructure Security Engineer (Bare Metal & Platform) posted Oct 10
- Sr. Security Engineer - GRC APAC Fintech & Financial Services posted Oct 9
- Infrastructure Security Engineer - Tokyo posted Oct 5
- Infrastructure Security Engineer - London posted Sep 28
- Vulnerabilty Analyst posted Sep 24
- Sr. Security Engineer - GRC Fintech & Financial Services EU/UK posted Aug 12
- Sr. Security Engineer - GRC Fintech & Financial Services posted Jul 29
- IAM Engineer posted Jul 6
- Infrastructure Security Engineer posted Mar 26
- Sr. Security Engineer - GRC Frameworks & AI Governance posted Jan 13
- Software Engineer - Platform Security posted Aug 21
- Application Security Engineer posted Nov 14
From the team and dates on SpaceXSI's own job board.
Salary context
6 other open postings titled Network Security Engineer state a salary: median USD 152,500 to USD 222,100 a year.
See Security Engineer salaries in the United States →
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