IT Network Engineer

Castelion was founded to restore America’s ability to field advanced weapons at speed and scale. Inspired by the engineering urgency of the WWII and Apollo eras, we combine rapid iteration, vertical integration, and scalable manufacturing to deliver affordable, high-performance strike systems. Our mission: rebuild industrial agility to strengthen national security and outpace evolving threats.

About the Role:

We are seeking a highly skilled Network Engineer at our Rio Rancho, NM s to implement, manage, and maintain network infrastructures supporting our mission-critical systems. The ideal candidate will bring deep technical knowledge of networking protocols and architecture, an understanding of cybersecurity requirements (e.g., DISA STIGs, hardening, zero trust), and proven experience operating in a fast paced, growing organization. This role will align well with a candidate experienced working in a manufacturing campus setting. An independent, autonomous self-starter personality is a must.

Requirements

Basic Qualifications:

• Bachelor's degree in Computer Science, Information Technology, or a related field (or equivalent experience).

• 3+ years of experience in network engineering roles, preferably in fast-paced companies, startup, defense, or government environments.

• Strong knowledge of networking protocols (TCP/IP, BGP, OSPF, EIGRP, MPLS).

• Hands-on experience with hardware: firewalls, switches, wireless access points, and power.

• Experience applying controls as directed by cybersecurity frameworks (RMF, STIGs, NIST, CMMC).

• Strong documentation and communication skills.

• Strong experience with SD-WAN and software-defined networking (SDN).

Preferred Qualifications:

• Industry certifications such as CompTIA Security+, CISSP, or CCNA.

• Experience with 802.1x and RADIUS for wired and wireless networks.

• Experience supporting classified networks.

• Experience with automation tools (Ansible, Terraform, Puppet, PowerShell DSC).

• Understanding of Zero Trust architecture and secure enclave designs.

• Active Security Clearance

Benefits

• Employee Equity: Meaningful equity for

all full-time employees - share value has increased 150x in three years

• Personal Time Off: Four (4) weeks of paid

time off to unplug, reset, and come back sharp—velocity matters, burnout doesn't

• Company Paid Holidays: Ten (10) company

paid holidays

• Medical: We offer plans at 100% employee

covered and 80% of dependent coverage

• Dental & Vision: We cover 90%

employees and 80% for dependents to ensure you and your family have access to quality preventive and ongoing care

• FSA/HSA: To support long-term health and

financial resilience, we offer FSA and HSA options that allow employees to set aside pre-tax dollars for eligible medical and dependent care expenses

• Retirement: 401k plan offered to support

long term financial growth along side high-impact, high-velocity work

• Paid Parental Leave: We support growing

families with meaningful time to bond and recover. Birthing parents are eligible for up to 10 weeks of paid leave, while non-birthing parents may take up to 4 weeks of paid leave. This time can be used for pre-natal care, pregnancy, childbirth, and related medical needs—ensuring every parent has the support they need during this important life moment.8-weeks of paid parental leave for all parents. Additional paid pregnancy leave for CA employees

• Meals & Catering: Frequently catered

lunches and team meals, plus company-covered meals when extra time or effort is required

• Snacks & Beverages: Fully stocked

kitchen with unlimited snacks and drinks to keep you fueled throughout the day

• Performance & Fitness: $100 monthly

fitness stipend to support peak performance and health, both inside and outside of work

• EV Charging: Onsite electric vehicle

charging available for employees