Full Stack Software Developer (St Louis)

Description

The Leidos FS2 Aero team has an opening for an experienced Full Stack Software Developer r to modify existing code and integrate software solutions for the Aeronautical Navigation Office. The ideal candidate has an excellent understanding of software development concepts and exceptional coding skills across different tools and projects in support of the mission.

Primary Responsibilities

The applicant must possess deep understanding of core AWS services, like compute, storage and be able to develop and deploy cores services (Lambda, EC2s).

C# / Java and JavaScript / TypeScript, Python, Shell scripting.

This role includes creation and documentation of new and existing functionality within software version control repositories (gitlab) and utilizing DevOps principals and tools to deliver new features within an Agile construct.

Participate in program Agile software development initiatives (standup, planning, Increment planning) to support innovation and enhancement of custom applications through iteration / functionality testing utilizing Atlassian (Jira / Confluence)

Primary responsibilities will involve using cloud computing expertise to provide the system administration and modification of existing GOTS code to integrate open-source software solutions for display in a web application. This role includes API development and database integration for interaction with Redux and React frameworks, using various open-source packages for visualization and data filtering and code modifications that shall apply best practices in unit and build testing.

Participate and collaborate with team members to assess tickets to ensure proper testing and delivery of functionality per User Story Acceptance Criteria

Basic Qualifications

Requires BS degree and 4+ years of prior relevant experience or Masters with 2+ years of prior relevant experience.

Must have an active Top Secret to be considered and ability to obtain TS / SCI clearance prior to start and willingness and ability to obtain a Polygraph

Minimum 3 years of experience with REACT or modern JavaScript framework.

Minimum 3 years of experience with Python, C# development framework

At least 3 years of experience with unit testing, continuous integration tools, and Gitlab version control

Proactive self-starter demonstrates a positive, willing attitude and excellent oral and written communication skills.

Experience in either software development projects or software integration projects in a service-oriented environment (Cloud, SOA, Web-Services) or virtualization environment.

Organizational Skills : Can plan and prioritize work. Follows tasks to their logical conclusion and makes sure that everything has been done to the right standard. Good attention to detail.

Communications : Ability to communicate clearly and efficiently to team members and clients, verbally and in writing. Able to present ideas in a variety of ways depending upon audience and context.

Preferred Qualifications

AWS Developer Solutions Mindset

At least 3 years of experience with Linux and / or Windows system administration

At least 2 years of experience with DoD Aeronautical Datasets

At least 1 year of experience with AWS cloud formation templates

At least 1 year of experience with Node, NPM, Swashbuckle, REST API, Sass

AWS Solutions, Developer, DevOps certification

Team Collaboration tools (Jira, Confluence)

Active TS / SCI with Polygraph

DOD 8570 Compliant Certification (Sec+)

At Leidos, we don't want someone who fits the mold-we want someone who melts it down and builds something better. This is a role for the restless, the over-caffeinated, the ones who ask, what's next? before the dust settles on what's now.

If you're already scheming step 20 while everyone else is still debating step 2... good. You'll fit right in.

Original Posting : August 29, 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 $85,150.00 - $153,925.00

The Leidos pay range for this job level is a general guideline onlyand 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.