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Information Systems Security Officer (ISSO) - JB

Telos Corp.
paid time off, tuition reimbursement, 401(k)
United States, Virginia, Reston
Jan 13, 2026
Job Title
Information Systems Security Officer (ISSO) - JB
Job Description

The most security-conscious organizations trust Telos Corporation to protect their vital IT assets. The reputation of our company rests on the quality of our solutions and the integrity of our people. Explore what you can bring to our solutions in the areas of cyber, cloud and enterprise security.

Be a part of the Telos culture and see what sets us apart! Telos offers an excellent compensation package with benefits that include generous paid time off, medical, dental, vision, tuition reimbursement, and 401k. Our employees enjoy more than just a great work environment!

This position will be based at Reston, VA

Job Description:



  • As an ISSO on our program, you'll detect, evaluate, and document the security configuration of developmental and operational tools and security impacts, and make improvement recommendations.
  • Coordinate work with in-house teams, subcontractors, and vendors to identify the right mix of tools and techniques to translate your customers' IT needs and future goals into a plan that will enable secure and effective solutions.
  • As an ISSO on our team, you'll advise the client, leading the discovery of their cyber risks, understanding applicable policies, and developing a mitigation plan.
  • You'll oversee the analysis of technical, environmental, and personnel details from technical subject matter experts and engineers as your team reviews the entire threat landscape. Then, you'll guide your client through a plan of action with presentations, whitepapers, and milestones.
  • Your client will rely on you to translate security concepts, so they can make the best decisions to secure their mission-critical systems.

Job Requirements

Basic Qualifications:



  • 3+ years of experience as an Information System Security Officer (ISSO) or Information System Security Analyst (ISSA)
  • Experience conducting tools assessments and configuration analysis against best practices, vendor specifications, and government security guidelines and requirements
  • Experience with the implementation, oversight, and maintenance of the security configuration, practices, and procedures for systems
  • Experience with implementing controls from NIST 800-53, FedRAMP, ICD 503, RMF, and DoD Information Levels, including applying them to the design and implementation of information technology solutions to achieve an authorization to operate (ATO)
  • Experience with eMASS or Xacta IA Manager
  • Ability to perform risk analysis
  • Active TS/SCI clearance; willingness to take a polygraph exam
  • Associate's degree and 5+ years of experience supporting IT projects and activities, Bachelor's degree and 3+ years of experience supporting IT projects and activities, or Master's degree and 1+ years of experience supporting IT projects and activities
  • DoD 8570 IAT Level II Certification, including CCNA-Security, CySA+, GICSP, GSEC, Security+ CE, CND, or SSCP Certification
  • Must obtain a DoD 8570.01-M CSSP Infrastructure Support Certification, including CEH, CySA+, GICSP, SSCP, CHFI, CFR, Cloud+, or CND certification prior to start date on the contract


Additional Qualifications:



  • Experience with DoD security technical implementation guides (STIGs), checklists, and testing tools, including STIG Viewer, SCAP, and ACAS scanning tool
  • Experience assessing configuration changes, such as new COTS tools or web application upgrades, to system security boundary
  • Experience drafting tool implementation CONOPS and reviewing tool or capabilities topologies, CONOPS, and vulnerability scans to assess risk
  • Experience with cyber-related tools such as Ansible, Terraform, Splunk, or STIG Viewer
  • Knowledge of cloud-native security tools, including HBSS
  • Knowledge of Zero Trust principles and concepts
  • Ability to plan and conduct security authorization reviews and assurance case development for initial installation of systems and networks
  • Ability to work within a collaborative team and a fast-paced dynamic environment
  • Possession of excellent written, organizational, presentation, and verbal communication skills
  • AWS, Azure, or GCP Certification


The successful candidate must meet eligibility requirements to access sensitive information, which requires US citizenship.

Telos maintains a drug-free workplace and will conduct drug testing on all applicants who have accepted an offer of employment.

Telos Corporation participates in the E-Verify program. Therefore, any employment with Telos will also be contingent upon confirmation from the Social Security Administration ("SSA") and/or the Department of Homeland Security ("DHS") of your authorization to work in the United States. Telos offers excellent compensation packages including salary commensurate with experience and benefits to meet your needs for today and the future.

Telos Corporation and its subsidiaries are committed to equal opportunity for all, without regard to race, religion, color, national origin, citizenship, sex, sexual orientation, gender identity, age, veteran status, disability, genetic information, or any other protected characteristic. Telos Corporation will make reasonable accommodations for known physical or mental limitations of otherwise qualified employees and applicants with disabilities unless the accommodation would impose an undue hardship on the operation of our business. If you are interested in applying for an employment opportunity and feel you need a reasonable accommodation pursuant to the ADA, please contact us at 1-800-283-1911. If you require relay service assistance, please click on the following link to review information on your state's relay service: https://www.fcc.gov/accessibility.

Telos Corporation is an EEO/AA employer.

Job Type
Full-Time
Location
Reston, VA 20191 US (Primary)
Telos offers an excellent compensation packages including salary commensurate with experience and benefits to meet your needs for today and the future. Telos and its subsidiaries are an Equal Opportunity/Affirmative Action Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or veteran status.
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