Sr Cyber Engineer (ISSE)

Accelint Holdings LLC; San Diego (CA); On-site; USD 110,000 - 137,000; Full time

Benefits offered by this job

401(k) Matching

Medical Insurance

Paid Time Off

Job summary

Lyntris, a defense technology company, seeks an Information Systems Security Engineer (ISSE)/Cybersecurity Engineer to support RMF, A&A, and cybersecurity compliance across DoD programs. The role acts as a cybersecurity adviser to program leadership and ISSMs, coordinating across multiple technical teams.

The ideal candidate has extensive RMF implementation experience, vulnerability management, and expertise with DoD security controls, e.g., NIST SP 800-series, ensuring systems achieve and

Qualifications

• Bachelor’s degree in Cybersecurity, Information Assurance, IT, CS, Engineering, or related field.
• 8+ years of cybersecurity, RMF, or cybersecurity engineering experience on DoD or Federal programs.
• Lead ISSE and RMF activities across the system lifecycle, including security control implementation and A&A.
• Develop, maintain, and review cybersecurity policies, CONOPS, SOPs and compliance documents.
• Conduct risk assessments, vulnerability analyses, security control evaluations, and remediation planning.
• Coordinate with program managers, ISSMs, engineers, and government stakeholders to integrate cybersecurity requirements.
• Evaluate COTS/GOTS/open-source tech for cybersecurity impact and authorization requirements.
• Knowledge of NIST/DoD guidance including NIST SP 800-53, SP 800-40, SP 800-92, SP 800-115, SP 800-128, SP 800-161, NAVWARINST 5239.20

Responsibilities

• Serve as ISSE supporting RMF, A&A, cybersecurity compliance for DoD programs.
• Develop, maintain, and assess cybersecurity policies, authorization artifacts, and compliance records per DoD requirements.
• Conduct risk assessments, vulnerability analyses, security control evaluations, and remediation planning.
• Collaborate with managers, ISSMs, engineers, and stakeholders to integrate cybersecurity requirements into system design and operations.
• Evaluate tech and CDS to determine cybersecurity impacts and authorization needs.
• Coordinate RMF schedules, security assessments, and accreditation support with leadership and stakeholders.

Skills

RMF

ISSE

Cybersecurity engineering

Vulnerability management

NIST SP 800-53

Education

Bachelor's degree in Cybersecurity or related field

Tools

eMASS

VRAM

ACAS

DADMS

DITPR-DON

Job description

About this position

Lyntrisis a defense technology company that connects sensing to action across the connected battlespace.Lyntrisbrings together the talents ofAccelintand Vitesse teams under one mission, with each contributing deepexpertisewithin their domain.Combining differentiated hardware,softwareand missionexpertise,Lyntrishelps customers sense threats, make sense of complex conditions and act with greater speed,precisionand confidence in contested environments.

Lyntris supports U.S. and allied defense organizations across every branch — including Navy, Army, Air Force, SpaceForceand allied partners — spanning strategic,operationaland tactical missions and every domain: Space, Air, Land, Sea and Cyber. With more than 200 active defense programs,Lyntrisworks at every level of the mission, from national command authority to the tactical edge.

Solutions are designed by operators who understand the mission, engineered for the conditions that degrade or defeat standard systems, and built on an open, modular architecture that integrates into existing programs without requiring them to start over.Lyntrismoves faster than the traditional defense cycle — with integrated design, build and test capabilities in-house — and delivers systems that sustain and endure long after initial fielding.

WeareseekinganInformationSystemsSecurityEngineer(ISSE)/CybersecurityEngineertosupportRiskManagementFramework(RMF),cybersecurityengineering,Assessment&Authorization(A&A),vulnerabilitymanagement,andcomplianceactivitiesacrossmultipleDepartmentoftheNavy(DON)systemsandprograms.Thispositionwillserveasakeycybersecurityadvisortoprogramleadership,engineers,InformationSystemSecurityManagers(ISSMs),andstakeholdersthroughoutthesystemlifecycletoensuresystemsachieveandmaintainauthorizationwhilemeetingcybersecurityrequirements.

TheidealcandidatewillpossessextensiveexperiencewithRMFimplementation,cybersecurityengineering,vulnerabilityassessments,accreditationactivities,andcompliancemanagementwithinDepartmentofDefense(DoD)environments.Thisrolerequirestheabilitytocoordinateacrossmultipletechnicalteams,manageauthorizationschedules,evaluatesystemarchitectures,andprovidecybersecurityexpertisethroughoutsystemdevelopment,testing,deployment,andsustainmentactivities.

Duties&Responsibilities

• Serve as the Information Systems Security Engineer (ISSE) supporting Risk Management Framework (RMF), Assessment & Authorization (A&A), cybersecurity compliance, and continuous monitoring activities throughout the system lifecycle for DoD programs and systems.
• Develop, maintain, and assess cybersecurity policies, procedures, security documentation, authorization artifacts, and compliance records in accordance with NIST, DoD, NAVWAR, and CNSSI requirements, leveraging tools including eMASS, VRAM, DADMS, and DITPR-DON.
• Conduct cybersecurity risk assessments, vulnerability analyses, security control evaluations, and remediation activities; support IAVM compliance, ACAS scanning, deficiency tracking, corrective action planning, and continuous authorization readiness.
• Collaborate with program managers, ISSMs, engineers, development teams, test organizations, and government stakeholders to integrate cybersecurity requirements into system design, development, testing, configuration management, and operational planning activities.
• Evaluate COTS, GOTS, open-source technologies, Cross Domain Solutions (CDS), PPSM requirements, and engineering changes to determine cybersecurity impacts, authorization requirements, and compliance with RMF and security control standards.
• Coordinate RMF schedules, security assessments, technical baseline reviews, modernization initiatives, and lifecycle cybersecurity activities while providing status reporting, risk mitigation recommendations, and accreditation support to leadership and program stakeholders.

RequiredQualifications

• Bachelor’s degree in Cybersecurity, Information Assurance, Information Technology, Computer Science, Engineering, or a related technical field.
• Minimum of 8+ years of cybersecurity, RMF, information assurance, or cybersecurity engineering experience supporting DoD or Federal programs.
• Lead Information Systems Security Engineering (ISSE) and Risk Management Framework (RMF) activities across the system lifecycle, including system categorization, security control implementation, Assessment & Authorization (A&A), continuous monitoring, and accreditation support.
• Develop, maintain, and review cybersecurity policies, procedures, CONOPS, SOPs, authorization packages, and compliance documentation while ensuring alignment with DoD, NIST, NAVWAR, and Information Assurance requirements.
• Conduct cybersecurity risk assessments, vulnerability analyses, security control evaluations, and remediation planning; manage vulnerability tracking and compliance activities using tools and repositories including eMASS, VRAM, ACAS, DADMS, and DITPR-DON.
• Collaborate with program managers, ISSMs, engineers, development teams, and assessment organizations to integrate cybersecurity requirements into system design, testing, configuration management, and operational planning activities.
• Coordinate security assessments, authorization schedules, corrective action plans, and compliance milestones, providing regular status updates and recommendations to program leadership and government stakeholders.
• Evaluate COTS, GOTS, and open-source technologies, identify cybersecurity impacts and authorization requirements, and support modernization efforts, software baseline management, and continuous authorization readiness.
• Knowledge of applicable cybersecurity standards and guidance, including NIST SP 800‑53, NIST SP 800‑40, NIST SP 800‑92, NIST SP 800‑115, NIST SP 800‑128, NIST SP 800‑161, NAVWARINST 5239.20.

PreferredQualifications

• Apply expertise in DoD cybersecurity, Risk Management Framework (RMF), Assessment & Authorization (A&A), Continuous Monitoring (ConMon), and cybersecurity engineering to support secure system development, accreditation, and operational compliance.
• Manage cybersecurity compliance activities utilizing enterprise tools and repositories including eMASS, VRAM, ACAS, DADMS, and DITPR-DON to support vulnerability management, authorization efforts, and security documentation.
• Conduct security assessments, Security Test & Evaluation (ST&E), vulnerability analysis, Information Assurance Vulnerability Management (IAVM), and remediation activities to ensure compliance with NIST, DoD, and Department of the Navy cybersecurity requirements.
• Support configuration and change management processes, including Security Control Assessments (SCA), Configuration Management (CM), Local Change Control Boards (LCCB), Ports, Protocols, and Services Management (PPSM), and Cross Domain Solution (CDS) authorization activities.
• Collaborate with engineering, cybersecurity, and program stakeholders to implement security controls, manage cyber risk, and maintain authorization readiness across complex enterprise and mission systems.

ClearanceRequirements

• Some positions will require access to U.S. National Security information.
• Positions that require this access will be required to receive and maintain a U.S. government personnel security clearance (PCL).
• In order to qualify for this position, the candidate must be a US citizen and either currently possess this National Security eligibility or be able to complete the investigation application process with a favorable determination and maintain that eligibility throughout the employment.
• To learn more about the security clearance process please access this link.

EEOC&KnowYourRights

LyntriscompaniesareEqualOpportunityEmployers.Allqualifiedapplicantswillreceiveconsiderationforemploymentwithoutregardtorace,color,religion,sex,nationalorigin,age,disability,statusasaprotectedveteranoranyotherstatusprotectedbyapplicablefederal,state,andlocallaw.Weensurethatallemploymentdecisions,includinghiring,promotion,compensation,andothertermsandconditionsofemployment,arebasedonmerit,qualifications,andbusinessneeds.Formoreinformationaboutyourrights,pleasereviewthe"KnowYourRights"posterfromtheEqualEmploymentOpportunityCommission(EEOC).KnowyourRights:EnglishSpanish

PayScales&Benefits

Thelistedpayscalereflectsthebroad,minimumtomaximum,payscaleforthispositionforthelocationforwhichithasbeenpostedandisnotaguaranteeofcompensationorsalary.Othercompensationconsiderationsmayinclude,butarenotlimitedto,jobresponsibilities,education,experience,knowledge,skills,andabilities,aswellasinternalequity,alignmentwithmarketdata,orotherapplicablefactors.

Benefitsinclude…PaidTimeOffPaidCompanyHolidaysMedical,Dental&VisionInsuranceOptionalHSAandFSABaseandVoluntaryLifeInsuranceShortTerm&Long-TermDisabilityInsurance401kMatchingEmployeeAssistanceProgram

Thepayrangeforthisroleis:$110,00-136,977peryear(SanDiego(UnitedStates))