Information Systems Security Officer

Peraton; Linthicum (MD); On-site; USD 112,000 - 179,000; Full time

Job summary

Peraton is seeking an Information Systems Security Officer in Linthicum, MD to support a DoD customer. The role requires implementing RMF v5 controls, managing ATO packages, and drafting SSP/SSPP documentation.

You will collaborate with IT teams to ensure security compliance and incident response readiness. The ideal candidate has 8+ years of cybersecurity experience, active TS/SCI eligibility, and strong communication skills for both technical and non-technical audiences.

Qualifications

• Experience with RMF v5 and DoD security guidelines.
• Ability to write security policies and assessment artifacts.
• Expert knowledge of risk management and incident response.
• Active Top Secret with SCI eligibility.

Responsibilities

• Implement and maintain RMF v5 security controls.
• Manage ATO packages and SSP/SSPP documentation.
• Draft Operating Procedures and Cybersecurity Strategy docs.
• Coordinate with system admins and developers for STIG remediation.
• Conduct risk assessments and respond to security incidents.
• Work onsite Monday through Friday in the Baltimore area.

Skills

RMF v5

NIST SP 800-53

eMASS

Cloud platforms (AWS)

Cloud platforms (Azure)

Security policies

Top Secret clearance

DevSecOps

Risk assessment

Certification & Accreditation

Education

Bachelor's degree in IT/CS

Master's degree in a related field

PhD (relevant)

Tools

eMASS

Windows

Unix/Linux

Job description

Information Systems Security Officer

Job Locations: US-MD-Linthicum

Requisition ID: 2026-166481

Position Category: Cyber Security

Clearance: Top Secret/SCI

Responsibilities

Peraton is seeking a Information Systems Security Officer in our Linthicum, MD office in support of our Department of Defense (DoD) customer as part of a highly talented, highly motivated, and high-performing team. This position offers a unique opportunity to work at the forefront of cyber investigations, digital forensics, cyber threat analysis, and mission support in a dynamic and collaborative environment. The successful candidate will contribute to protecting national security interests by leveraging technical expertise, analytical skills, and innovative problem-solving to address complex cyber challenges. Individuals who are passionate about cybersecurity, committed to excellence, and eager to make a meaningful impact are encouraged to apply.

We are looking for an Information Systems Security Officer (ISSO) with a proven track record of DevSecOps success to include a combination of technical skills, communication skills, and cybersecurity skills. The successful candidate will be responsible for ensuring the implementation and maintenance of security controls in accordance with RMF v5, managing ATO packages, drafting security documentation including Operating Procedures, Cybersecurity Strategy (CSS), System Security Plans (SSP) ATO packages as well as System Security and Privacy Plan (SSPP) in accordance with DoD policies, Department of Airforce (DAF) regulations and our Federal Government customer's guidance.

The candidate must have expert knowledge and demonstrated experience with cybersecurity technologies, risk management, and incident response procedures as well as have a solid working understanding of computer functions, including hardware, software, and operating systems. This includes knowledge of Windows, Unix, and Linux operating systems, along with other applications such as databases, web servers, networking technologies, including routing, switching, and VPNs. It's a bonus if the candidate has experience with cloud computing platforms such as AWS and Azure.

The ISSO must be able to work autonomously, manage their workload effectively, shift priorities with little to no loss of productivity and communicate effectively with technical and non-technical personnel.

*This position requires full-time, onsite attendance Monday through Friday in the Baltimore metropolitan area.

Qualifications

Required Qualifications:

• Well-versed in best practices for cyber security program standards, processes, and procedures compliance, industry-standard security frameworks and demonstrated expert working knowledge of NIST Special Publication (SP) 800-53: Recommended Security Controls for Federal Information Systems, NIST SP 800-53A: Guide for Assessing the Security Controls in Federal Information Systems, AFPD 17-1 and AFI 17-130, Cybersecurity Program Management.


• Ability writing security policies and procedures, CSS, SSP, SSPP, and assess all ATO package artifacts.


• Expert knowledge of Risk Management Framework (RMF) v5 (Processes, workflow, etc.).


• Ability to use eMASS to execute, RMF v5 to include document / update system status, identify, document, and manage implementation of operational and technical security controls, implementation and risk assessment tabs, non-compliant and non-validated controls, POAM management (entry, evidence, close-out), produce report and track Plan of Action and Milestone (POA&M) due dates, etc.


• The ability to complete a checklist to ensure Security Authorization Process documents are complete and comply with all guidance.


• Ability to work collaboratively with IT counterparts, communicate effectively (skilled in communicating complex technical information to non-technical audience) and coordinate STIG remediation with system administrators and developers.


• Ability to conduct risk assessments, monitor security Incidents and respond appropriately to Security Threats.


• Working understanding of network technology (includes knowledge of network protocols, TCP/IP), operating systems as well as the necessary security protocols, system details (Architecture, data flow, security cat, requirements, configuration management process/procedures, and user profile) firewalls, rules and configurations, intrusion detection tools and prevention systems, encryption techniques, Windows, Unix, and Linux) operating systems, along with other applications such as databases and web servers.


• Ability to execute tasks with little to no oversight or support as well as manage multiple, and at times, competing priorities without loss of productivity.


• Certifications: Active IAT Level II certification (CompTIA Security+ preferred).


• Security Clearance: Active Top Secret with SCI eligibility.


• Education: Bachelor's degree and 8+ years of experience, or Master's Degree and 6+ years of experience, or 3 years with PhD. A degree in one of the following fields of study is highly desired: Information Technology, Computer Science, Cybersecurity, Information Systems, Software Engineering, or Data Science. However, an additional 4 years of relevant experience or specialized training may be considered in lieu of Bachelor's degree.

Desired Qualifications:

• Certifications: CASP+, CISM, CISSP, CISSP-ISSMP, FITSP-M, GCIA, GCIH, GICSP, GSLC.


• Experience transitioning from RMF v4 to v5.


• Basic understanding of identity and access management system capabilities and configuration.


• Experience with cloud computing platforms such as AWS and Azure.


• Experience with TASKORDS, OPORDS, etc.


• Experience leading Cybersecurity (ISSO & ISSE) teams.

Peraton Overview

Peraton is a next-generation national security company that drives missions of consequence spanning the globe and extending to the farthest reaches of the galaxy. As the world's leading mission capability integrator and transformative enterprise IT provider, we deliver trusted, highly differentiated solutions and technologies to protect our nation and allies. Peraton operates at the critical nexus between traditional and nontraditional threats across all domains: land, sea, space, air, and cyberspace. The company serves as a valued partner to essential government agencies and supports every branch of the U.S. armed forces. Each day, our employees do the can't be done by solving the most daunting challenges facing our customers. Visit peraton.com to learn how we're keeping people around the world safe and secure.

Target Salary Range

$112,000 - $179,000. This represents the typical salary range for this position. Salary is determined by various factors, including but not limited to, the scope and responsibilities of the position, the individual's experience, education, knowledge, skills, and competencies, as well as geographic location and business and contract considerations. Depending on the position, employees may be eligible for overtime, shift differential, and a discretionary bonus in addition to base pay.

EEO

EEO: Equal opportunity employer, including disability and protected veterans, or other characteristics protected by law.