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CGS Federal (Contact Government Services)

Information System Security Officer (ISSO)

arlington, VA

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Job description

Employment Type: Full-Time, Mid-Level

Department: Administrative and Logistics Support

As a FSR ISSO, you will be embedded on-site with U.S. Government customers to ensure the secure, compliant operation of a production-grade data and application platform used in mission-critical environments. You will serve as the primary authority for system security and compliance—working hands-on with live systems while partnering closely with engineers, operators, and customer security teams.

CGS brings motivated, highly skilled, and creative people together to solve the government’s most dynamic problems with cutting-edge technology. To carry out our mission, we are seeking candidates who are excited to contribute to government innovation, appreciate collaboration, and can anticipate the needs of others. Here at CGS, we offer an environment in which our employees feel supported, and we encourage professional growth through various learning opportunities.

Skills and attributes for success:

Act as the primary on-site point of contact for security and compliance requirements across one or more U.S. Government customers

Support system accreditation and authorization activities using frameworks such as RMF or DIACAP

Collaborate with software, systems, and field engineers to ensure required security controls, configurations, and policies are correctly implemented

Analyze deployed software implementations and assess alignment with applicable security requirements

Build, standardize, and maintain security documentation, including SSPs, POA&Ms, control narratives, and supporting artifacts

Generate, validate, and organize evidence of compliance once security settings are applied

Assemble accreditation artifacts into a structured, auditable repository

Support audits, assessments, and ongoing compliance activities throughout the system lifecycle

Maintain the ongoing security and trust of customers through hands-on system access and coordination with engineering and operations teams

Support software operating across AWS, Azure, on-premises, and at multiple classification levels

Operate in environments where the platform, threat landscape, and operational needs are continuously evolving

Qualifications:

Background in systems administration, software development, systems engineering, or deep familiarity with Linux-based systems

Experience accrediting IT systems against U.S. Government standards such as NIST SP 800-53, CNSSI 1253, and DISA STIGs

Hands-on experience supporting accreditation using eMASS or Xacta

Experience collaborating with engineering teams to implement and validate security configurations

Understanding of configuration management and automation tools (e.g., Puppet, Terraform, CloudFormation, Chef, Ansible)

Comfort using version control systems such as Git

Ability to independently use vulnerability scanning tools such as Nessus and OpenSCAP

Experience working in cloud and on-premises environments, including AWS

Strong ability to produce clear, concise technical documentation, stay organized, and maintain attention to detail

Curiosity, critical thinking, and the ability to evaluate real-world implementations against formal security requirements

Active TS/SCI Clearance or Eligibility

Our Commitment:

Contact Government Services (CGS) strives to simplify and enhance government bureaucracy through the optimization of human, technical, and financial resources. We combine cutting-edge technology with world‑class personnel to deliver customized solutions that fit our client’s specific needs. We are committed to solving the most challenging and dynamic problems.

For the past nine years, we’ve been growing our government‑contracting portfolio, and along the way, we’ve created valuable partnerships by demonstrating a commitment to honesty, professionalism, and quality work.

Here at CGS we value honesty through hard work and self‑awareness, professionalism in all we do, and to deliver the best quality to our consumers mending those relations for years to come.

We care about our employees. Therefore, we offer a comprehensive benefits package.

Health, Dental, and Vision

Life Insurance

401k

Flexible Spending Account (Health, Dependent Care, and Commuter)

Paid Time Off and Observance of State/Federal Holidays

Contact Government Services, LLC is an Equal Opportunity Employer. Applicants will be considered without regard to their race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or status as a protected veteran.

Join our team and become part of government innovation!

Explore additional job opportunities with CGS on our Job Board:

For more information about CGS please visit: or contact:

Email:

We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses and identifying potential inconsistencies or verification signals in application materials based on available information. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.

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Worksite address

arlington, VA, 22201, US

Who can apply

Review the original listing for work authorization, qualifications and employer requirements.

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