Security Architect

Leidos Holding$154K — $278K *
Aerospace & Defense
11 - 15 years of experience
Job Overview by Ladders

Qualifications

  • BS degree and 15+ years of relevant experience, or Masters with 15+ years
  • Active TS/SCI clearance with ability to obtain/maintain Polygraph
  • One of the following DoD 8570.01-M IASAE Level II certifications: CISSP, CISSP-ISSAP, CISSP-ISSEP, CSSLP, or CASP+ CE
  • Familiarity with NIST Special Publications such as SP 800-27, 30, 37, 53, 60
  • Experience supporting DoD/IC systems through the RMF process to ATO
  • Proven experience in incident response planning and vulnerability management
  • Strong analytical, communication, problem-solving, and interpersonal skills

Responsibilities

  • Provide expert guidance to streamline ATO management processes
  • Lead solution architecture and implementation of security and governance models
  • Offer technical guidance to team members on security solutions
  • Interact directly with client CIO and Security POCs
  • Create and maintain security policies and procedures
  • Analyze security incidents and provide recommendations for resolution
  • Foster collaboration within the team to ensure quality service

Benefits

  • Work flexibility including remote options
  • Opportunity to impact Defense Intelligence Enterprise projects
  • Support in professional development and innovation
  • Collaborative and adaptive team environment
  • Valued role in securing cloud infrastructures
Full Job Description

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



Original Posting:
August 7, 2026

Pay Range:
Pay Range $154,050.00 - $278,475.00

The Leidos pay range for this job level is a general guideline onlyand 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.

About Leidos Holding

Leidos Holding Careers

Joining Leidos Holding presents an unparalleled opportunity to advance one's career with a leader in innovation and technology. The company offers a plethora of job opportunities aimed at fostering professional growth and development in a diverse and inclusive environment.

Explore Career Opportunities

Leidos Holding is actively seeking skilled professionals who are passionate about leveraging their expertise to drive innovation and leadership in their fields. With a variety of open positions, Leidos Holding provides a platform for individuals to challenge themselves in a dynamic work environment.

Innovation and Professional Growth

At Leidos Holding, innovation is at the core of everything they do. Employees are encouraged to think creatively and push boundaries. The company supports this drive for innovation through comprehensive professional development and diversity training programs that are designed to enhance skills and foster leadership.

Commitment to Diversity and Inclusion

Leidos Holding is committed to creating a workplace where diversity is not only recognized but celebrated. With a culture that values and promotes diversity, Leidos Holding ensures that all team members have the opportunity to contribute, learn, and grow.

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For those starting their career, Leidos Holding offers internship programs that provide a robust foundation in the industry. Internships are a great way to develop essential skills, gain valuable work experience, and build professional networks.

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Employees at Leidos Holding enjoy a range of benefits designed to support their professional and personal lives. The company culture is built on a foundation of respect and integrity, providing a supportive and collaborative environment where every team member is valued.

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