Senior IT Network Engineer

Job Description

Job Description

About Castelion

Castelion is bringing a new approach to defense development and production : one that focuses on short, iterative design cycles, rapid testing in development, and modern commercial manufacturing strategies for production at scale. We're designing, building, and testing next generation long range strike weapons systems to give America and its Allies a definitive edge and deter future conflicts.

Senior IT Network Engineer

We are seeking a highly skilled and security-cleared Senior Network Engineer to design, implement, manage, and maintain complex 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, RMF), and proven experience operating in a fast paced, growing organization.

Responsibilities

• Design, deploy, and maintain secure and scalable enterprise network infrastructures, including LAN, WAN, VPN, VoIP, and wireless.
• Collaborate with cybersecurity, systems engineering, and project teams to ensure compliance with DoD and NIST cybersecurity compliance standards.
• Manage all components in a modern hybrid cloud network infrastructure, including workloads on-premises, in major cloud providers, and in the field.
• Configure and manage routers, switches, firewalls, and other network devices from vendors such as Cisco, Juniper, Palo Alto, and Fortinet.
• Implement and maintain system hardening in compliance with DoD STIGs, NIST frameworks, CMMC, and more.
• Lead troubleshooting and root cause analysis of complex network issues in a multitude of environments.
• Develop and maintain network documentation, diagrams, and standard operating procedures.
• Provide mentorship and guidance to junior network engineers and technicians.
• Participate in audits, accreditation, and certification processes.
• Support deployments and field operations, including as-needed travel (5-10%) to other Castelion sites.

Basic Qualifications

Preferred Qualifications

Working Conditions

Leadership Qualities

ITAR Requirements

Employment with Castelion is governed on the basis of competence and qualifications and will not be influenced in any manner by race, color, religion, gender, national origin / ethnicity, veteran status, disability status, age, sexual orientation, gender identity, marital status, mental or physical disability or any other legally protected status.

All employees are granted long-term stock incentives as part of their employment at Castelion. All employees receive access to comprehensive medical, vision, and dental insurance, and the company offers four weeks of paid time off per year.