Cyber Security Engineer

at LinQuest
Published February 11, 2024
Location El Segundo, CA
Category Default  
Job Type Full-time  


LinQuest is seeking a Cyber Security Engineer to join our team in El Segundo, CA.

LinQuest is the prime contractor on the MSEIT contract. By applying to this position, you are in consideration for LinQuest employment. However, you also have the option to be hired by one of our subcontractor teammates.

The MSEIT (MILSATCOM Systems Engineering, Integration and Test) team in support of SMC (Space and Missiles Systems Center) in El Segundo is seeking an individual to provide Information Assurance (IA) and Cybersecurity support for the MILSATCOM Capability area. The MILSATCOM portfolio of programs has an ongoing need for IA/Cybersecurity support, to meet the needs of our emerging next-generation protected SATCOM.

The MILSATCOM Systems Engineering, Integration, and Test (MSEIT) effort provides leading edge Systems Engineering & Integration (SE&I) for the Air Force's Space and Missiles System Center. We support the Air Force's acquisition of state of the art Military Satellite Communications systems, providing global secure, survivable, and protected communications for our nation's warfighters. We seek technical individuals who will thrive in a highly collaborative work environment of small teams, using the most modern tools and methodologies to tackle the challenges of integrating complex space and ground communications systems.

•Obtain and maintain Authority to Operate (ATO) documentation, support continuous monitoring or periodic scans of networked assets and conduct/ oversee defensive cyber, threat intel, threat hunting, malware analysis, countermeasures/ corrective action, and network analysis
•Support the SSC with ensuring security, quality, timeliness, mission partner support, completeness, and regulatory compliance of ATO RMF documentation
•Support the following responsibilities: security control assessor (SCA) and Security Technical Implementation Guide (STIG) curated to DOD/DAF/USSF baselines, audit standards, and plan of actions and milestones (POAM)
•Attend cleared expert threat briefings; have oversight of security program design, incident response plans, cyber risk assessments, and attack surface assessments; investigate security breaches, perform red, blue, purple, ethical hacking, orchestrate vulnerability assessment, develop security protocols, conduct tabletop exercises, and breach readiness reviews
•Perform systems engineering activities in the areas of cybersecurity, Assessment & Authorization (A&A), cryptographic System Security Engineering (SSE), and Certification & Accreditation (C&A), in accordance to NIST 800-53 RMF and NSA requirements and regulations
•Define security requirements, architecture, and design for embedded and large-scale, distributed DoD space and ground control systems
•Apply risk management concepts to mitigate vulnerabilities in system security architectures
•Interface with Space Force customer, system stakeholders, and external contractors to coordinate cybersecurity/cryptographic requirements and architecture flow down from the system level to individual elements of the system

Required Skills and Experience:
•BA or BS degree in engineering, physics, chemistry, mathematics, computer science, network, and telecommunications; information systems, information technology, or computer information systems
•7+ years of work experience in System Engineering Architecture/Design
•7+ years of work experience in Information Assurance (IA)/Cyber Security
•Understanding of modern computing architectures including CI/CD, microservices, cloud, and container technologies
•Knowledge and experience with public and private key governance/theory, Encryption Algorithms (substitution and transposition) as a Service, and Mathematical principles behind encryption
•Experience with leading risk management efforts to achieve and maintain authorization for systems using DoD RMFs tools
•Experience with delivering cybersecurity architecture and engineering services
•Understanding of the discipline and practice of Systems Engineering throughout the system lifecycle phases of concept, development, production, use, support, and retirement
•Proficient with Microsoft Office products (Word, Excel, Powerpoint)
•Strong interpersonal, organizational, and teambuilding skills
•Strong writing and oral presentation skills; ability to write final-version deliverable technical documents and reports
US Citizenship and the ability to obtain a Secret clearance is required to be considered for this position

Preferred Skills and Experience:
•Master's degree in Computer Science/Engineering with emphasis in IA/Cyber Security
•10+ years of work experience in IA/Cyber Security
•10+ years of work experience in System Engineering Architecture/Design
•DoD Space program experience
•RMF or DIACAP Independent Verification and Validation (IV&V)
•NIST 800-53 and CNSSI 1253 RMF Analysis and Accreditation
•Network Engineering
•Communications Systems
•Security Test and Evaluation (ST&E)
•Security certification (CISSP)
Secret or higher clearance

Compensation: The salary for this position ranges from approximately $110,000 to $170,000 depending on relevant experience and qualifications.

Why LinQuest?
LinQuest Corporation has a stellar 40-year track record of providing end-to-end system-of-systems (SoS) architecture definition, engineering design, integration and test, and operations expertise to enable full lifecycle development and deployment of pre-eminent Space, Air, Land, Sea, Ground, and Cyberspace game-changing capabilities across US DOD and IC Customers' portfolios. Unique combination of in-depth domain knowledge, lessons learned-honed best practices, and mission-specific applications of principles, tools, and techniques of Digital Engineering (DE), DE Ecosystem (DEE), and Model-Based Systems Engineering (MBSE) set LinQuest apart from the competition to consistently deliver stellar high-value results for our customers. LinQuest's corporate vision and values place the employee at the center of utmost customer satisfaction, strategic business growth, and tactical execution excellence. Our employees' creative and inspirational drive, sense of fulfillment of personal and professional growth, and tightknit camaraderie within and across lines of business are essential in gaining and maintaining exceptional LinQuest corporate-wide results of new business awards and renewed contracts.

Benefits: LinQuest offers comprehensive and competitive benefit offerings to our team members to include medical, dental, vision, retirement, paid time off, company paid life insurance, and more! For additional information please visit:

Equal Opportunity Employer/Protected Veterans/Individuals with Disabilities

The contractor will not discharge or in any other manner discriminate against employees or applicants because they have inquired about, discussed, or disclosed their own pay or the pay of another employee or applicant. However, employees who have access to the compensation information of other employees or applicants as a part of their essential job functions cannot disclose the pay of other employees or applicants to individuals who do not otherwise have access to compensation information, unless the disclosure is (a) in response to a formal complaint or charge, (b) in furtherance of an investigation, proceeding, hearing, or action, including an investigation conducted by the employer, or (c) consistent with the contractor's legal duty to furnish information. 41 CFR 60-1.35(c)