Security Architect

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

#NMEC-Leidos

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.

Original Posting:

August 7, 2026

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.

Pay Range:

Pay Range $154,050.00 - $278,475.00

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.