Principal Systems Security Engineer​/Senior ISSM

Position: Principal Systems Security Engineer / Senior ISSM
## Principal Systems Security Engineer / Senior ISSMApplyremote type:
In office locations:
Lone Tree, COtime type:
Full time posted on:
Posted Todayjob requisition :
R0030084

The ISR (Intelligence, Surveillance & Reconnaissance), Aviation, and Security (IAS) business area is a leader in ISR and aviation, it is a leading prime manned and unmanned aircraft systems integrator for innovative, high-performance ISR and aviation systems. Its end-to-end Command, Control, Computers, Communications and Intelligence, Surveillance & Reconnaissance (C4

ISR) capabilities encompass design, integration, test, certification, ground/flight training and complete logistics support. IAS tailors solutions to customer cost, performance, and schedule requirements and designs to consistently exceed expectations – with an unrivaled record of on time and on (or under) budget deliveries.

SNC has led thoughtful and disruptive change in the aerospace and defense industry for the past 60 years and now, we’re applying this tenacity and expertise to the U.S. Air Force’s (USAF) Survivable Airborne Operations Center (SAOC) mission. Join the SNC-led SAOC team and be a part of exciting and meaningful work to modernize and deliver the next-generation SAOC aircraft trusted by the President, Secretary of Defense and Chairs of the Joint Chiefs of Staff to ensure continued critical command, control and communication during national emergencies.

If you’re passionate about building the airborne command post of the future, consider SNC for your next mission. Learn more about NC3 and SAOC here.

If you are adept at IT, identifying, installing, and troubleshooting technical solutions, and enjoy collaborating with multiple teams, we may have the perfect role for you! As a Principal Systems Security Engineer, you will act as a key leader in developing and executing our security strategy. You will oversee the security architecture, manage high-stakes security incidents, and provide expert consultation across the organization.
** Responsibilities:
*** The Principal Systems Security Engineer / Senior Information System Security Manager (ISSM) is a dual-mode technical SME and program security lead responsible for the end-to-end cybersecurity posture, compliance governance, and system accreditation of information systems within a complex, multi-classification defense program environment.
* This role combines active hands-on-keyboard technical security execution — vulnerability scanning, SIEM operations, STIG hardening, and system monitoring — with senior leadership accountability for ISSO team development, ATO lifecycle management, DCSA/DoW/IC compliance framework implementation, and direct representation of program security posture to government stakeholders and Authorizing Officials.
* The Principal Systems Security Engineer /Senior ISSM operates with authority across both the technical and governance dimensions of information security.
* On the technical side, they execute and oversee vulnerability management, security monitoring, configuration hardening, and incident response with hands-on proficiency.
* On the governance and leadership side, they own the program's RMF/ATO strategy, develop and enforce the security policies and procedures that govern the program environment, train and mentor ISSOs/ISSEs, coordinate with DCSA/DOW/IC and government stakeholders, and brief program security status at formal USG reviews.
* Neither dimension is optional — this role demands both simultaneously.  
** Qualifications You Must Have:
*** Bachelor's degree in Systems Security, Network Engineering, Information Technology, or related Engineering discipline.
* 12+ years of experience in IT security or a related field.
* Relevant experience can be considered as a substitute for the required educational qualifications. In the absence of a degree, a minimum of 16 years of related experience is required.
* Higher level relevant degree may substitute for experience.
* A minimum of 8 years in a formal ISSM role with direct ATO package ownership and government AO interface responsibility.
* Deep expertise in cybersecurity principles and practices.
* Experience with security frameworks…