Full Stack Developer Security Clearance

Position: Full Stack Developer with Security Clearance
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- Description Leidos is looking for a Full Stack Software Developer with a current TS-SCI Clearance in Key West, FL or remote worker. The program provides sustainment support for Mission-Critical applications and capabilities. Each system has its own specific requirements and infrastructure. Our effort encompasses system development, update and integration relying on sound data science to aggregate and correlate multiple datasets federated from multiple computing platforms and frameworks to update a family of systems that are unique to the environment.

This work requires extensive knowledge in common high-level programming language, Web markup and programming languages and an understanding of low-level languages. Examples of the types of languages and tools requiring proficiency as part of these programming activities are below, this list may not be all inclusive:
Leadership skills are highly desired. We are seeking technical, self-motivated Application developer , to be versatile and flexible to changing priorities from multiple customers. Candidates must work well in an Agile Scrum environment. Primary Responsibilities
* Design, Build, Test software upgrades and modifications

* Troubleshoot software and system issues in a Agile scrum team

* Use technical expertise to suggest environment and process upgrades

* Implement COTS, and other third party, product updates

Basic Qualifications:

* BS Degree and 8+ years experience (or relevant experience in lieu of degree).

* Must currently possess an active Secret clearance for remote support OR TS/SCI for on-site support.
* Software engineering and development experience with Java, JavaScript, Angular, Node.js, React

JS, C# and CSS, HTML/XHTML, Loopback

* Experience with Rest APIs,JSON, SOAP

* Experience with Docker and Kubernetes

* Experience with Code repositories, (i.e. GIT/SVN)

* Experience with Postgre SQL

* Experience with JIRA and Confluence

* Experience setting up and working with virtual environments, (VBOX, VM, Oracle)

* Experience with Windows, Solaris/Linux OS (scripting, command line)

* Troubleshooting and problem solving skills, with the use of debuggers

Preferred Qualifications:

* TS/SCI on-site worker in Key West, FL

* Experience working with and troubleshooting Mission Critical applications in an Operations environment

* Experience with AI/ML development

* Experience with SAFe Agile of other Agile SW development methodologies

* Experience with Subversion/JIRA

* Experience working in Cloud architecture and/or application transitions to the Cloud
Come break things (in a good way). Then build them smarter. We're the tech company everyone calls when things get weird. We don’t wear capes (they’re a safety hazard), but we do solve high-stakes problems with code, caffeine, and a healthy disregard for “how it’s always been done.” Original Posting:
December 24, 2025 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 $ - $ 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 Leidos is an industry and technology leader serving government and 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 $16.7 billion for the fiscal year ended January 3, 2025. For more information, visit  . Pay and Benefits Pay and benefits are fundamental to any career decision.

That's why we craft compensation packages that reflect the importance of the work we do for our customers. Employment benefits include competitive compensation, Health and Wellness…