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Cross-domain Solutions Specialist 

EOE StatementWe are an equal employment opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, gender, national origin, disability status, protected veteran status or any other characteristic protected by law.

Tenacity Solutions is a rapidly growing Security Engineering and IT Solutions firm offering professional services to the National Security market.  We believe our qualified and versatile staff is equipped to best serve our customers and engagements given the full support, empowerment, and backing of Tenacity’s back-office and corporate support.

Tenacity is building a group of Cyber Security Engineers in support of Fort Meade and we are looking for individuals that are interested in getting in on the ground floor and working together to build our Maryland Cyber Security team. Tenacity offers a robust training and education focus that drives to help our employees obtain and maintain 8570 certifications and integrate into the Cyber community through direct national conference participation. We will be building this Maryland practice with the help of our strong team and capability supporting Virginia.

We offer a comprehensive health and welfare package including a generous Paid Time Off (PTO) package; a Safe Harbor contribution of 3% in addition to a 4% 401(k) match; formal education reimbursement; training and professional development programs; and semi-annual staff member bonuses just to name a few.

Tenacity Solutions is committed to breaking the mold of traditional employers to create an environment that enriches its employees and promotes a quality work/life balance. 

Position Description:

Successful Candidates should have experience and eduction in support of the following functions:

  • Designs, refines, implements, standardizes, deploys, maintains, and evaluates crossdomain solutions
  • Contributes to security planning, assessment, risk analysis, and risk management
  • Provides technical support to engineering teams
  • Provides recommendations on corporate solutions to resolve security requirements
  • Supports Government enforcement of the design and implementation of trusted relationships among external systems and architectures
  • Helps to identify gaps in CDS capabilities, designs solutions for the gaps, and collaborates with engineering teams in implementing those solutions
  • Reports on current status and capabilities of CDS solutions
  • Participates on engineering teams to standardize procedures to provide repeatable processes and test results
  • Forecasts hardware and software license needs for design and deployment activities
  • Provides Tier 3 and/or Tier 4 support for legacy and next-generation CDS deployments
  • Provides feedback on system integration to the Senior Cross-Domain Solution Specialist


Position Requirements

Required (Skills, Knowledge, Abilities)

  • TS/SCI with Poly
  • B.S. in Computer Science or related technical field may be substituted for four years of engineering experience
  • Four years engineering experience
  • One year experience designing, deploying, and maintaining cross-domain solutions
  • One year engineering experience in CDS
  • One year experience in system security design processes, defense-in-depth/breadth, engineering life cycle, information domains, principles of IA (confidentiality, integrity, non-repudiation, availability, access control), and security testing
  • One year experience with underlying security architectures of Trusted Solaris 8, Solaris 10 TX, and SELinux-based guard solutions
  • One year experience using XACML (eXtensible Access Control Markup Language) and its application to CDS
  • One year experience with the performance and security capabilities of the crossdomain solution set
  • One year experience in responding to trouble calls and outages and the inherent problems of maintaining operational CDS deployments
  • One year experience in integrating obligations/policies to enhance the security and stabilization of CDS platforms
  • One year experience identifying software bugs and shortcomings in PL4 guards
  • One year experience in deploying CDS to CONUS locations and working with local Government personnel to complete integrations
  • One year experience working with CDS design teams to identify and structure the appropriate CDS for enterprise guard farm and mission specific solutions
  • One year experience engineering hardened Linux and/or Solaris OS loads for use in CDS
  • One year experience guiding a system or solution through the Security Authorization Process, in accordance with DCID 6/3 and the NISCAP documentation process
  • One year experience managing Red Hat 4.6-5.5, Solaris 10, and Solaris 10 w/ Trusted Extensions systems
  • A Red Hat Certified Technician
  • One year experience creating and modifying bash and/or perl scripts

Tenacity Solutions is fully committed to Equal Employment Opportunity and to attracting, retaining, developing and promoting the most qualified employees without regard to their race, gender, color, religion, sexual orientation, national origin, age, physical or mental disability, citizenship status, veteran status, or any other characteristic prohibited by state or local law. We are dedicated to providing a work environment free from discrimination and harassment, and where employees are treated with respect and dignity.


Full-Time/Part-Time Full-Time  
Position Information Security Engineer  
Number of Openings 1  
Exempt/Non-Exempt Exempt  
Req Number OPE-12-00181  
Open Date 10/17/2013  
About the Organization Tenacity Solutions Incorporated is a rapidly growing technology firm offering high-end IT consulting services to the National Security & Defense markets. We believe our customers are best served by consultants who are highly qualified, versatile, and fully supported and empowered by their company.

We're headquartered in Reston Virginia and support clients around the Washington DC beltway, CONUS and O-CONUS locations

We offer a comprehensive benefits package, generous paid time off, up to 7% contribution & match on 401(k), $10k in education reimbursement, training and professional development programs just to name a few.

Tenacity Solutions is committed to breaking the mold of traditional employers to create an environment that enriches its employees and promotes a quality work/life balance.  

This position is currently not accepting applications.

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