Reston, Virginia, United States · Hybrid
$154k–$278k/yr
Are you ready to join Leidos all-star team? Through training, teamwork, and exposure to challenging technical work, let Leidos show how to accelerate your career path. Leidos has an exciting opening for you as our next T…
Skills: Risk Management Framework, Solution Architecture, Cloud Infrastructure, Cybersecurity, System Security Engineering
Gaithersburg, Maryland, United States · On-site
$92k–$167k/yr
Are you a seasoned Systems Administrator who thrives on solving complex technical challenges and keeping mission-critical environments operating at peak performance? Are you passionate about modern infrastructure, automa…
Skills: Windows Server, Red Hat Enterprise Linux, VMware vSphere, Active Directory, DNS
Ogden, Utah, United States · On-site
$73k–$133k/yr
Unlock Your Potential as a seasoned System Administrator at Hill AFB Utah. ! Leidos is searching for a highly skilled and driven System Administrator to take on a mission-critical role at Hill AFB Air Force Base. If you'…
Skills: Systems Administration, Cybersecurity, JWICS, Active Directory, Network Storage
Gaithersburg, Maryland, United States · On-site
$108k–$195k/yr
Join Leidos and help shape the future of geospatial intelligence! We are seeking an experienced and innovative Senior Systems Engineer to support the Maru Program with our Intelligence Community customer. If you’re passi…
Skills: Systems Engineering, Agile, DevSecOps, CI/CD, Requirements Analysis
Fort Meade, Maryland, United States · On-site
$116k–$210k/yr
Looking for an opportunity to make an impact? At Leidos, we deliver innovative solutions through the efforts of our diverse and talented people who are dedicated to our customers’ success. We empower our teams, contribut…
Skills: Cyberspace operations planning, Joint planning processes, USCYBERCOM operations, Targeting selection, Operational plans development
Des Moines, Washington, United States · On-site
$87k–$157k/yr
Looking for an opportunity to make an impact? At Leidos, we deliver innovative solutions through the efforts of our diverse and talented people who are dedicated to our customers’ success. We empower our teams, contribut…
Skills: Electronics Engineering, Systems Engineering, Project Engineering, Project Management, Infrastructure Planning
Bethesda, Maryland, United States · Hybrid
$108k–$195k/yr
Leidos is looking for our next TS/SCI‑cleared DevOps Software Engineer to join a high‑energy team building and deploying a cutting‑edge technology stack in support of the DIA‑NMEC (National Media Exploitation Center) DOM…
Skills: DevOps, Kubernetes, Linux, CI/CD, GitLab
Baltimore, Maryland, United States · On-site
$131k–$237k/yr
Leidos is seeking a Enterprise Architect to be part of the mission solution and help lead SSA’s Digital Modernization Strategy. Join one of our high performing teams responsible for building the next-generation enterpris…
Skills: Machine Learning, Deep Learning, Neural Networks, Python, Natural Language Processing
Huntsville, Alabama, United States · On-site
$48k–$87k/yr
Leidos’ Defense Systems, Threat Modeling & Simulation Portfolio, is seeking a talented Engineering Intern for modeling & simulation applications with the ability to potentially work multiple projects within the Threat Mo…
Skills: Modeling & Simulation, Data Analysis, Algorithm Development, Software Development, Matlab
Newcastle, New South Wales, Australia · Hybrid
Junior Naval Architect - Leidos Gibbs & Cox Australia - Newcastle | Hybrid About Leidos Australia At Leidos Australia, our work goes beyond a job title. We design, build, operate and support the systems, services and cap…
Skills: Naval architecture, Marine engineering, Stability analysis, Maxsurf, Rhino
Huntsville, Alabama, United States · On-site
$70k–$126k/yr
Leidos is dedicated to making the world a safer place. This starts with helping our customers in the Defense Industry achieve their critical missions. Our dedicated Defense Group employees are solving critical challenges…
Skills: Software testing, Automated testing, C#, C++, Java
Chantilly, Virginia, United States · On-site
$131k–$237k/yr
Technical Lead – ICAM Modernization (PDP, PEP/PIP, EMS & RPMS Modernization) This position is considered a limited time position of around 7 months with the possibility of going longer. General program information and/or…
Skills: ICAM, Technical Leadership, DevOps, Software Engineering, Agile
Springfield, Virginia, United States · On-site
$116k–$210k/yr
Leidos has an exciting opportunity for an Expert Level Exploitation Specialist/Imagery Scientist (SAR) - to join our team in Springfield, VA. Our ideal candidate will be able to : Conduct applied image processing and adv…
Skills: SAR, Image processing, Radar imagery, Python, Data analysis
Aurora, Colorado, United States · On-site
$131k–$237k/yr
Leidos has a new and exciting opportunity for a Principal Linux Systems Administrator in our Intelligence Sector, Cyber & Analytics Business Area (CABA). Our talented team is at the forefront in Security Engineering, Com…
Skills: Linux, Windows, Virtualization, System Administration, Network Integrity
Bristol, England, United Kingdom · Hybrid
$62k–$79k/yr
Software Developer – Embedded Systems Location: Bristol 3-4 days/week on customer site Clearance: Must be eligible for DV clearance (British Citizen, UK residency last 10 years). Are you an experienced software developer…
Skills: C++, Python, Embedded systems, ESP32, Raspberry Pi
Huntsville, Alabama, United States · On-site
$87k–$157k/yr
Leidos is dedicated to making the world a safer place. This starts with helping our customers in the Defense Industry achieve their critical missions. Our dedicated Defense Group employees are solving critical challenges…
Skills: C++, C, Python, Java, Software Architecture
Odenton, Maryland, United States · On-site
$70k–$126k/yr
The Leidos Digital Modernization Sector has a current job opportunity for a Swing-Shift Cyber Security Watch Officer (CSWO) at Ft. Meade, MD POSITION SUMMARY: Serve as a Cyber Security Watch Officer (CSWO) on the DISA GS…
Skills: Cyber incident handling, Network analysis, Threat detection, Vulnerability assessment, DoD Cyber Security Service Provider
Huntsville, Alabama, United States · On-site
$87k–$157k/yr
Leidos is dedicated to making the world a safer place. This starts with helping our customers in the Defense Industry achieve their critical missions. Our dedicated Defense Group employees are solving critical challenges…
Skills: Automated testing, Software engineering, C#, C++, Java
United States · On-site
$51k–$92k/yr
The McMurdo Area Management Senior Administrative Coordinator will be responsible for a broad range of administrative and organizational support functions while deployed to McMurdo Station as part of the Antarctic Suppor…
Skills: Administrative support, Meeting facilitation, Documentation management, Communication, Microsoft Office
Bethesda, Maryland, United States · Hybrid
$131k–$237k/yr
Leidos has an exciting opening for you, our next TS/SCI cleared Senior DevOps Software Engineer to play a critical role on the DOMEX Technology Platform (DTP) Program where we support our client’s mission to centralize a…
Skills: Kubernetes, DevOps, CI/CD, Microservices, Elasticsearch
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The Security Architect will lead the solution architecture and implementation of security, governance, and accreditation models for an Enterprise AI Platform. They will provide expert technical guidance to teams, manage ATO processes, and ensure compliance with security policies and standards.
Candidates must possess a Bachelor's or Master's degree with 15+ years of relevant experience and an active TS/SCI clearance. A DoD 8570.01-M IASAE Level II certification, such as CISSP, is required along with deep expertise in RMF and system security engineering.
Are you ready to join Leidos all-star team? Through training, teamwork, and exposure to challenging technical work, let Leidos show how to accelerate your career path.
Leidos has an exciting opening for you as our next TS/SCI Security Engineer Solution Architect supporting the creation of an Enterprise AI Platform and Digital Services Framework for a Defense Intelligence Enterprise (DIE) client. Have impact as part of a mission focused, solutions oriented, and adaptive team that values innovation, collaboration, and professional development. As the Security Engineering Solution Architect, your job is to provide technical security expertise in a primarily cloud infrastructure with focus on leading teams through the Risk Management Framework to system ATOs across multiple domains. You will lean on your experience with security technologies and industry best practices while employing effective security solutions. You are a demonstrated leader, skilled at achieving cross functional collaboration in a dynamic and fast paced environment. Work will be conducted both remotely and on-site at several locations, primarily but not exclusively within the National Capital Region (NCR).
As an integral member of the team, you will work closely with Program Management, Security and System Engineers on the following key tasks:
Provide expert guidance to enable streamlining ATO management processes with engineering solutions and best practice efficiencies
Lead solution architecture and implementation of streamlined security, governance, and accreditation support model, including automation of compliance processes
Provide expert technical guidance to team members while employing security solutions
Directly interact with client CIO and Security POCs
Create, improve, and maintain security policies and procedures
Provide operating system hardening and system patching guidance based on DISA STIGs and NIST publications
Analyze security incidents and provide recommendations for resolution
Strong knowledge and experience in software development in an Agile environment
Manage individual project priorities, deliverables, and deadlines.
Foster an environment of collaboration with the different team members in the goal of providing quality service and product to our customer.
You demonstrate a solid understanding of security best practices and meet the following qualifications:
BS degree and 15+ years of prior relevant experience or Masters with 15+ years of prior relevant experience
An active TS/SCI clearance with the ability to obtain/maintain a Polygraph
Have at least one of the following DoD 8570.01-M IASAE Level II certifications: CISSP, CISSP-ISSAP, CISSP-ISSEP, CSSLP, or CASP+ CE. NOTE: the CISSP Associate is not acceptable
Familiarity with NIST Special Publications e.g. NIST SP 800-27, 30, 37, 53, 60
Experience with CNSS publication CNSSI 1253
Experience supporting DoD/IC systems through the entire Risk Management Framework Plus (RMF) process to ATO
Experience with incident response plans, plans of actions and milestones (POA&Ms), risk management plans, and vulnerability management plans
Experience establishing and maintaining a System Security Engineering (SSE) management process to integrate security and privacy controls into complex hardware and software systems
Experience managing a team of Cyber Security Engineers (CSEs) and Information System Security Officers (ISSOs)
Experience using Tenable Security Center and all components
Experience with technologies such as Linux, Windows, firewalls, gateways, proxies, VPCs, and public key infrastructure.
Strong analytical, communication, problem-solving, and interpersonal skills
You will wow us even more if you have some of these:
An active TS/SCI clearance with Poly
Certified Scrum Master (CSM) or SAFe Scrum Master (SSM) certification
Successfully achieved ATO under RMF+ across multiple domains
Experience working in Agile and DevOpsSec environments
Experience with big data applications
Experience with Jira and Confluence
Experience with OIDC or Oauth2
Experience with any of the following technologies:
Kubernetes, Rancher, or Cloudera containerization technologies
CI/CD tools like Jenkins or Gitlab
Elasticsearch
Active Directory
SQL and NoSQL databases
Scripting languages like bash, python, or PowerShell
#ASBA
If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo — because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 — and moving faster than anyone else dares.
For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.
The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.
An industry & technology leader serving government & commercial customers with smarter, more efficient innovations
Leidos is an industry and technology leader serving government & commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $17.2 billion for the fiscal year ended January 2, 2026. Leidos was cited for the meaningful work employees perform that is challenging, impactful, and aligned with our customers’ missions as reasons professionals want to work and stay at our company. Leidos has also been named to lists including Forbes’ Best Employers for Diversity, Forbes’ America’s Best Employers for Women, Military Times Best for Vets Employers, and Ethisphere Institute’s World's Most Ethical Companies®. Employees enjoy career enrichment opportunities available through mobility and development and experience rewarding relationships with supportive supervisors and talented colleagues and customers. Employees appreciate our flexible work environment, allowing for and encouraging a true work-life balance. Our professionals are also excited about our Employee Resource Groups, like the Collaborative Outreach with Remote and Embedded Employees (CORE), which strives to create an environment where every employee, regardless of location, feels fully engaged as a valued employee of Leidos. Your most important work is ahead, visit careers.leidos.com for our latest opportunities.
Offices: 1750 Presidents St, Reston, Virginia 20190, US · 11955 Freedom Drive, Reston, VA 20190, US · 1145 N 2nd St, Leavenworth, KS 66048, US · 9600 Great Hills Trail, Austin, TX 78759, US · 221 3rd St, Newport, RI 02840, US
An industry & technology leader serving government & commercial customers with smarter, more efficient innovations
Leidos is an industry and technology leader serving government & commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $17.2 billion for the fiscal year ended January 2, 2026. Leidos was cited for the meaningful work employees perform that is challenging, impactful, and aligned with our customers’ missions as reasons professionals want to work and stay at our company. Leidos has also been named to lists including Forbes’ Best Employers for Diversity, Forbes’ America’s Best Employers for Women, Military Times Best for Vets Employers, and Ethisphere Institute’s World's Most Ethical Companies®. Employees enjoy career enrichment opportunities available through mobility and development and experience rewarding relationships with supportive supervisors and talented colleagues and customers. Employees appreciate our flexible work environment, allowing for and encouraging a true work-life balance. Our professionals are also excited about our Employee Resource Groups, like the Collaborative Outreach with Remote and Embedded Employees (CORE), which strives to create an environment where every employee, regardless of location, feels fully engaged as a valued employee of Leidos. Your most important work is ahead, visit careers.leidos.com for our latest opportunities.
Offices: 1750 Presidents St, Reston, Virginia 20190, US · 11955 Freedom Drive, Reston, VA 20190, US · 1145 N 2nd St, Leavenworth, KS 66048, US · 9600 Great Hills Trail, Austin, TX 78759, US · 221 3rd St, Newport, RI 02840, US
