Systems Engineer SME

Leidos Holding$154K — $278K *
Information Technology
11 - 15 years of experience
Job Overview by Ladders

Qualifications

  • Active TS/SCI with Polygraph clearance
  • Master's degree and 15+ years of experience, or additional experience instead of a degree
  • Experience with Cloud services, particularly Amazon Web Services
  • Proficiency in SQL and Linux administration
  • Familiarity with Agile methodologies, Jira, Confluence, and ServiceNow
  • Hands-on experience with Terraform or Cloud Formation
  • Knowledge of DevSecOps best practices
  • Experience with security accreditation processes (NIST, RMF, etc.)
  • Strong attention to detail and customer support at Tier 3 and Tier 4 levels

Responsibilities

  • Build, test, maintain, and monitor complex systems
  • Decompose requirements for clarity and actionable tasks
  • Ensure design compatibility with architecture and requirements
  • Automate processes to improve system capabilities and workflows
  • Conduct functional analysis and ensure customer needs are translated into specifications
  • Identify and address system integrity issues throughout the system lifecycle
  • Integrate systems and effectively communicate results to stakeholders
  • Support the ATO and accreditation efforts for systems and applications

Benefits

  • Access to a collaborative and large interdisciplinary team
  • Opportunities for professional development and continuous learning
  • Involvement in cutting-edge cloud technologies and infrastructure
  • Flexible scheduling with occasional late-night coordination for releases
  • Exposure to high-security and accredited systems environments
Full Job Description
The Systems Engineer will work with a large team of developers, software engineers and data engineers. Primary Responsibilities List daily duties and/or specific job responsibilities.

  • Build outs, testing, maintenance, and monitoring of systems
  • Requirements Decomposition
  • Ensure designs are compatible with the architecture and allocated requirements to segments
  • Address user requirements, procedures, and problems to automate and improve existing systems and review computer system capabilities, workflow, and scheduling limitations
  • Perform functional analysis, timeline analysis, cost estimation, requirements allocation, and interfaced definition studies to translate customer requirements into hardware and software specifications
  • Identify system integrity issues and solutions for the full system life cycles from concept to disposal
  • Integrate systems and services as well as summarize and communicate results
  • Support the development, documentation, and execution of system policies Required
  • Support the ATO / Accreditation effort for customer systems and applications


Required Qualifications
  • Active TS/SCI with Polygraph
  • Master's degree and 15+ years of experience. Additional experience in lieu of degree
  • Experience with the Cloud / Amazon Web Services
  • Experience with SQL
  • Agile Methodology / Jira, Confluence; ServiceNow (ESP)
  • Experience with Terraform and/or Cloud Formation
  • DevSecOps
  • Experience with CLSE
  • Experience providing Linux Administration
  • Must be familiar with security accreditation process (Experience with Security Tools and Processes; RMF, NIST, Accreditation Apps (Xacta; GreenLight), System Scanning, Vulnerability Scanning; Plan of Action & Milestone (POAM) tracking
  • Excellent customer support and attention to detail - Tier 3 and Tier 4 level support to team and customer base.
  • Provide Release Management for deployment readiness, coordination and activities (**will require some late-night activities; typically, once a month - 5pm - 9pm)


Desired Qualifications
  • Experience with IdAM / ICAM delivery systems, Authentication, Authorization, Attributes
  • Entitlement Management and Digital Policy Management
  • LDAP Experience is a plus
  • Security +, CISSP
  • Amazon Web Services Certificate
  • Experience with BPM/BAW


FIP

Original Posting:
June 29, 2026

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.

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.

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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.

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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.

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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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