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techroles

Software Developer

Leidos Open · verified Oct 24, 2026
St. Louis Full-time Mid-level Software Engineering

At a glance

Mid-level Software Engineering role at Leidos. St. Louis · full-time · $69,550–$125,725 base.

SalaryStated by Leidos
$69,550 – $125,725
Base salary for this role, in USD per year, as published in the posting.
This role, from LeidosOur estimate for the market: $152,981–$191,303Median $163,275
Below the market median of $163,275 for mid-level software engineering roles in St. Louis.
Worked out from 6 postings that stated pay, median $163,275. Last updated Oct 23, 2026.
RoleSoftware Engineering
SeniorityMid-level
LocationSt. Louis
EmploymentFull-time
Base pay$69,550–$125,725
PostedSep 23, 2026 · 4w ago
Role brief

techroles summary, based on the employer's posting.

What you'll do

  • Build and deploy AWS components such as Lambda and EC2 for software supporting aeronautical navigation
  • Adapt existing GOTS code so open-source software can appear in web applications, linking APIs and databases with React and Redux
  • Document new and existing features in GitLab, then deliver changes through DevOps workflows and Agile cycles
  • Test application changes and check that delivered work meets each user story's acceptance criteria

What you bring

  • You have a bachelor's degree and at least two years of relevant experience, a master's with under two years, or four related years
  • You hold an active Top Secret clearance and can qualify for SCI after joining
  • You have experience with React or a modern JavaScript framework, along with Python and C#
  • You have used unit tests, continuous integration and GitLab, plus development or integration work in cloud or virtualized settings

Who this fits

This junior developer role suits someone building software skills while contributing to an Agile team. You need an active Top Secret clearance and must be able to obtain SCI after joining.

From the employer

The Leidos FS2 Aero team has an opening for a junior software developer to work on the design and coding with software solutions for the Aeronautical Navigation Office. The ideal candidate has a familiarity with and a baseline understanding of software development concepts, developing coding skills using different tools, and ambition towards future projects in support of the mission.

Primary Responsibilities

  • The applicant must possess an 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, OpenShift, Shell scripting, Docker, React, Postgres SQL, GraphQL (and Apollo) and Prisma.
  • 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

  • Active Top Secret with ability to obtain a SCI post hire
  • Typically requires BS degree and 2+ years of prior relevant experience or Masters with less than 2 years; OR 4+ years of related experience.
  • Experience with REACT or modern JavaScript framework.
  • Experience with Python, C# development framework
  • 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, REST API, Sass
  • AWS Solutions, Developer, DevOps certification
  • Team Collaboration tools (Jira, Confluence)
  • Active TS/SCI with Polygraph
  • DOD 8570 Compliant Certification (Sec+)

#NSBA

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:

September 23, 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.

Opportunity

Software Engineering work from LinkedIn, X, Reddit and Upwork, in one list.

Each morning you get everything that fits, strongest first.

Software Engineering$60k+

Find me work

By the team behind techroles.

Find me work
Opportunity

Software Engineering work from LinkedIn, X, Reddit and Upwork, in one list.

Each morning you get everything that fits, strongest first.

Find me work

By the team behind techroles.