ISSO - TS/SCI w/Polygraph

gdit; Bethesda (MD); On-site; USD 153,000 - 207,000; Full time

Benefits offered by this job

401K match

Health & wellness

Career mobility

Education & certifications

Tech at work

Paid vacation

Job summary

GDIT is seeking an ISSE in Bethesda, MD to support customer activities and deliver cybersecurity services. You will help ensure today is safe and tomorrow is smarter, joining a team tasked with risk management across multiple fabrics and centers.

The role requires TS/SCI with active polygraph, 5+ years of related experience, and the ability to produce thorough security documentation and test plans. Onsite at the customer site with strong growth potential.

Qualifications

• 5+ years of related experience.
• US citizenship required.
• Education: Bachelor's degree in computing or related field.

Responsibilities

• Provide expert-level RMF knowledge to support a NIST SP 800-53 through the A&A process.
• Create security documentation: SSPs, POA&Ms, and BOE artifacts for sponsor approval.
• Identify security controls and work with engineering, development and testing staff to craft test plans.
• Implement security audit reviews and verify audit records are collected and reviewed.
• Coordinate all security testing exercises with external assessment teams and staff.
• Configure and support AWS services to protect the system's security posture.

Skills

Artifact Analysis

Assessment & Authorization

NIST SP 800

POA&M

System Security Plans

Education

Bachelor's degree (related field)

Job description

Type of Requisition: Regular

Clearance Level Must Currently Possess: Top Secret SCI + Polygraph

Clearance Level Must Be Able to Obtain: None

Public Trust/Other Required: None

Job Family: Cyber and IT Risk Management

Job Qualifications

Skills: Artifact Analysis, Assessment & Authorization (A&A), NIST SP 800, Plan of Action and Milestones (POA&M), System Security Plans

Certifications: None

Experience: 5 + years of related experience

US Citizenship Required: Yes

Job Description

Seize your opportunity to make a personal impact as an ISSE supporting customer activities. GDIT is your place to make meaningful contributions to challenging projects and grow a rewarding career.

At GDIT, people are our differentiator. As an ISSE, you will help ensure today is safe and tomorrow is smarter. Our work depends on an ISSE joining our highly skilled team to be a premier provider of cyber security services to the customer. We provide consummate cyber security risk management “as a service” platform across multiple fabrics and centers. We have responsibility to ensure operational IT capabilities provide the client with necessary timeliness, accuracy and security of information demanded from all our highly professional roles. Be the change, lead our change – join us!

How Cloud Security SME Support Will Make an Impact

A successful candidate will work with others on program security team to provide for all aspects of security to include but not limited to the following:

• Provide expert-level knowledge, both in context and execution with the Risk Management Framework to support a NIST SP 800-53 HHM systems through the A&A process.


• Construct thorough and complete security documentation to include, but not limited to, System Security Plans (SSPs), Plan of Actions and Milestones (POA&Ms), and any other artifacts to support the Body of Evidence (BOE), for sponsor's approval.


• Identify security controls and work with engineering, development and testing staff to construct proper test plans and procedures.


• Implement security audit reviews verifying that the audit records are collected and reviewed.


• Coordinate all security testing exercises, working with external assessment teams and technical staff.


• Configure and support various AWS services to protect the security posture of the system.

Education/Experience

• Education: Bachelors (Computer engineering, Computer Science, Electrical Engineering, Information systems, Information Technology, Cybersecurity, or a closely related discipline)


• Required Experience: 5+ yrs

Desired Skills

• Demonstrated strong technical skills and analytic abilities, as well as experience performing system security analysis and risk management.


• Demonstrated experience with security in the Amazon Web Services environment.


• Demonstrated experience performing complex technical tasks in pursuit of overall goals with minimal direction.


• Demonstrated experience in translating an understanding of systems and applications into security test plans and perform hands on security testing.


• Demonstrated knowledge of risk management methodologies.


• Demonstrated experience to analyze test results and suggest mitigations for security problems.


• Demonstrated technical experiences with system configuration, development, and design specifically around enterprise systems and hypervisors.


• Demonstrated experience with Linux and virtual platforms.


• Documented working experience with public and private information security groups and organizations.


• Possesses experience with communicating vulnerability results and risk posture to senior executives.


• Possess a broad knowledge of Information Security policies and guidance, as well as the ability to assist in researching, evaluating, and developing relevant security policies and guidance.


• Security Clearance Level: TS/SCI with active polygraph


• Location: Bethesda, MD - On Customer Site

What You’ll Need to Succeed

• Education: Bachelors (Computer engineering, Computer Science, Electrical Engineering, Information systems, Information Technology, Cybersecurity, or a closely related discipline)


• Required Experience: 5+ yrs


• Security Clearance Level: TS/SCI with active polygraph


• Location: Bethesda, MD - On Customer Site

GDIT Is Your Place

• 401K with company match.


• Comprehensive health and wellness packages.


• Internal mobility team dedicated to helping you own your career.


• Professional growth opportunities including paid education and certifications.


• Cutting-edge technology you can learn from.


• Rest and recharge with paid vacation and holidays.

#WeAreGDIT #JET #GDITEnhanced2026 #VA_2026Alumni

The likely salary range for this position is $153,000 - $207,000. This is not, however, a guarantee of compensation or salary. Rather, salary will be set based on experience, geographic location and possibly contractual requirements and could fall outside of this range.

Scheduled Weekly Hours: 40

Travel Required: Less than 10%

Telecommuting Options: Onsite

Work Location: USA MD Bethesda

Additional Work Locations:

Our Identity Verification Process

As part of the hiring process, we will ask you to complete an identity verification process that leverages advanced biometrics and artificial intelligence to ensure authenticity and protect against identity fraud. You are expected to be on camera during virtual interviews. We reserve the right to take your picture to verify your identity and prevent fraud. By proceeding, you authorize the collection, processing, and use of your biometric data for identity verification and security purposes.

About Our Work

We are GDIT. A global technology and professional services company that delivers technology solutions and mission services to every major agency across the U.S. government, defense and intelligence community. Our 26,000 experts extract the power of technology to create immediate value and deliver solutions at the edge of innovation. We operate across 50+ countries worldwide, offering leading mission-ready capabilities in AI, cloud, cyber and software development. Join our Talent Community to stay up to date on our career opportunities and events at gdit.com/tc.

Equal Opportunity Employer / Individuals with Disabilities / Protected Veterans