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Salary
$70k – $126k per year
Location
In office (Saint Louis)
Seniority
Middle · 4+ years exp
Employment
Full-Time
Overview
Company
Impact
Profile match
Leidos is a defense, intelligence, civil, and health information technology enterprise. Headquartered in Reston, Virginia, the Fortune 500 company (NYSE: LDOS) operates as one of the primary IT, scientific research, and systems integration contractors for the U.S. federal government, allied defense agencies, and commercial infrastructure entities.

The Leidos National Solutions Division has an exciting opportunity for a Journeyman Full Stack Engineer to assist with the software development, maintenance, integration, deployment, and sustainment of maritime systems.

Responsibilities:

This role is responsible for adaptive, corrective, preventive and perfective maintenance of maritime systems software. This role uses best practices and patterns to perform design, development, and automated testing of software modules via DevSecOps in an Agile team.

  • This role involves software system development, including the design, development, troubleshooting, and debugging of software programs for software enhancements and maintenance.
  • Participate in peer reviews and unit testing and must be adaptable to different responsibilities.
  • Duties include software requirements analysis and development of software products in a maintenance setting.
  • This role is responsible for identifying software and hardware dependencies and capacities.
  • Creating and maintaining documentation is part of this role.

Core Qualifications:

  • Requires a BS in Information Systems, Information Technology, Computer Science or closely related discipline and 4+ years of prior relevant experience or master’s with 2+ years of prior relevant experience; OR 4 years of experience in lieu of degree
  • Proficient in software development projects or software integration projects in a service-oriented environment (Cloud, SOA, Web-Services) or virtualization environment.
  • Proficient in AWS/Cloud technologies
  • Experience with cloud-based architecture
  • Understanding of DevOps methodologies and workflow
  • Knowledge of the Architectural, SW Development and SW Sustainment Practices
  • Familiar with Vue, NodeJS, PostgreSQL
  • Familiar with Git/GitLab or other source code control tools
  • Familiar with Amazon Web Services (S3 Buckets, EC2, Reserved Instances, etc.)
  • Familiar with System Engineering documentation creation (VDDs, diagrams, etc.)
  • Familiar with team collaboration tools (Jira, Confluence, RocketChat)
  • Must possess an active Top Secret Security Clearance with ability to obtain SCI and a polygraph post hire

Preferred Qualifications:

  • DOD 8570 Certification (Security+ or equivalent or higher)
  • Understanding of Containers (Docker, ECS, EKS, Fargate, AKS)

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 14, 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 $69,550.00 - $125,725.00

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.

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