Sr. Software Developer / Sr. Application Developer

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

List daily duties and/or specific job 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 12 years of experience in lieu of degree

Must currently possess an active Secret clearance for remote OR TS/SCI for onsite.

Software engineering and development experience with Java, JavaScript, Angular, Node.js, ReactJS, 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

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

Original Posting:July 9, 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 $104,650.00 - $189,175.00

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.

#Remote

Full Time