Cybersecurity Engineer

***To be considered for this role, you must be a US Citizen with a US government security clearance.  Additionally, you must either live near or be willing to move to the Boulder, CO area.***

About Centil

Centil, a Sabel Systems company, is a mission-focused engineering team supporting some of the highest-priority space defense programs in the U.S. Space Force portfolio, including missile defense and missile warning systems for Space Systems Command. Our work spans DevSecOps, CI/CD product development, and space-domain systems engineering, and our people are embedded directly in the programs they support.

In January 2026, Sabel Systems acquired Centil to expand its Advanced Engineering Services capabilities. For our team, that means access to a broader portfolio of programs, deeper corporate resources, and new career pathways - while preserving the technical ownership and small-team culture that defines how we work. It's an exciting time to join Centil: we're growing, the mission portfolio is expanding, and we're building the team that will define what comes next. If you are interested in learning more about Centil or our team, check out our website at www.centil.io.

About the role

The Cybersecurity Engineer we hire for this role will work to identify and mitigate cybersecurity vulnerabilities for a ground system for a new United States Space Force (USSF) satellite constellation. This person will work with the program's engineering team to architect, develop and sell-off products to a government customer. Work will include configuration development, Security Technical Implementation Guide (STIG) compliance and testing, and delivery of a secure environment for Overhead Persistent Infrared (OPIR) mission operations. Ideally, this candidate has experience in Risk Management Framework (RMF). We consider experience with OPIR missions to be a significant bonus for this role.

Please note: this role is required to be onsite in Boulder.

What you'll do

Key responsibilities for the Cybersecurity Engineer include:

• Develop Cyber Plans and Procedures for an environment that consists of, amongst other technologies, Juniper network devices, Red Hat Linux, Red Hat Identity Manager, IBM AIX, iSCSI Storage, VSAN, ESXi, AND VMWare
• Work with Systems Engineers to develop solutions that manage cybersecurity risks within systems
• Perform cybersecurity scans, analyze results and harden systems
• Generate documentation required to achieve approval to operate systems
• Interface with the customer, leveraging strong interpersonal skills and attention to detail

Required Qualifications

• Must hold DoD Secret Clearance, at minimum
• Bachelor of Science degree in Engineering, Mathematics, Physical Sciences, Computer Science (Relevant experience will be considered in lieu of education)
• Minimum of five (5) years of experience in CyberSecurity Engineering 
• Experience with cyber tools, including ACAS and HBSS
• Strong understanding of Cybersecurity frameworks and standards
• Experience running DISA SCAP Scan and working with DISA STIGs for operating systems, network devices, and other infrastructure related services (LDAP, AD, ESXi, Virtual Machines)
• Ability to work with system and security SMEs to harden and mitigate vulnerabilities identified by cyber tools
• Experience with incident response and management
• Ability to communicate technical information via oral presentation and written format
• Ability to work full time onsite in Boulder

Preferred/Bonus Qualifications

• Strong focus on internal and external customer success
• Possess CompTIA Security+ and CISSP or similar certifications
• Cybersecurity engineering experience with embedded systems development for DoD
• Understanding of networking fundamentals, programming languages, and operating systems
• Familiar with Risk Management Framework (RMF)
• Understanding of ethical hacking and penetration
• Experience working within an agile workflow
• Experience with Jira and Confluence
• Experience with Overhead Persistent Infrared (OPIR)