Sr. Software Developer / Sr. Application Developer

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:

April 30, 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 $89,700.00 - $162,150.00

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.