Mid-Level Cybersecurity Assessment Specialist - Millennium Space Systems

## Mid-Level Cybersecurity Assessment Specialist - Millennium Space Systems Apply remote type:
Onsite Joblocations:
USA - Boulder, COtime type:
Full time posted on:
Posted Yesterday time left to apply:
End Date:
June 15, 2026 (29 days left to apply) job requisition :
JRMid-Level Cybersecurity Assessment Specialist - Millennium Space Systems
** Company:
** Millennium Space Systems Millennium Space Systems, a part of Boeing Defense, Space and Security (BDS), is a fast, agile small satellite company focused on national security space. Our missions have direct impact to global security, like missile warning and Earth observation.

Our team is curious, bold and innovative. We take risks, innovate and explore new techniques and technologies. We influence change because we challenge the status quo. And when we watch our satellites launch, we know each one of us made it happen.
** Job
* **
* Summary:

** The MSS Ground Systems & Operations Organization is looking for a
** Mid-Level Cybersecurity Assessment Specialist
** to join the team in Boulder, CO.This position involves performing adversarial security testing of the enterprise’s various Information Technology (IT) environments and penetration testing utilizing Proof of Concept (PoC) and homegrown exploitation in addition to red teaming activities.

This individual must have strong foundational knowledge and working proficiency in both system administration and software development disciplines.

This position's internal job is Cyber Security Assessment Spec . Our team is currently hiring for 4.
*
* Position Responsibilities:

*** Conduct application and network layer penetration tests on various IT environments
* Conduct red teaming activities, including physical security penetration testing
* Perform independent pen testing utilizing numerous penetration testing tools and leveraging mainly manual techniques, typically testing will necessitate source code analysis
* Write risk prioritized finding reports, debrief system owners and consult on remediation options
* Retest security vulnerabilities that have been identified as fixed to verify remediation
* Contribute to pen testing, red teaming, tooling, and reporting methodology enhancements
* Evaluate effectiveness of defensive countermeasures and consult with blue teams to help improve detection methods and capabilities required for situational awareness
* Perform exploitation analysis and authors exploitation tools/techniques
* Experience performing ACAS and OpenRMF compliance scans for classified networks, identifying weaknesses and reporting results to external organizations
* Experience with secure software development lifecycle and large-scale computing environments
* Experience working with Information Security principles, policies, and industry best practices including the Critical Security Controls (CIS), Open Worldwide Application Security Project (OWASP), Top 10 and Mitre Adversarial Tactics, Techniques, and Common Knowledge (ATT&CK) framework
* Experience working with Authentication and Authorization Controls
* Experience working with common server applications such as Internet Information Services (IIS), Apache, Lightweight Directory Access Protocol (LDAP), Tomcat, and Secure Shell (SSH)
* Experience working with common network protocols such as Hyper Text Transfer Protocol/ Hyper Text Transfer Protocol Secure (HTTP/HTTPS), Transmission Control Protocol/Internet Protocol (TCP/IP), and User Diagram Protocol (UDP)
** Basic Qualifications (Required Skills/Experience):
*** This position requires an active U.S. Top Secret Security Clearance with SCI eligibility (U.S. Citizenship Required). (A U.S. Security Clearance that has been active in the past 24 months is considered active)
* Bachelors degree in engineering or related technical discipline and typically 9 or more years' related work experience or an equivalent combination of technical education and experience
* 9 or more years' experience working in Cybersecurity enclaves
* Minimum 1 year of experience working in ISSO role
** Preferred Qualifications (Desired Skills/Experience):*
* * 3 years' experience as an ISSM
* At least 2 years working as ISSE across multiple bases and…