Software Developer

St. Louis, Missouri

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Type: Direct-Hire

Experience: 0

Category: Information Technology

Contractor Work Model: Onsite

Brand: ALTA IT Services

Job ID: 341026

Date Posted: 09/15/2025

Shortcut: http://jobs.systemone.com/mxHsA7


Software Developer (341026)
Location: St. Louis, Missouri (onsite)
Job Type: Full Time/Direct Hire
Clearance: Active Top Secret clearance required (with the ability to upgrade to a CI Poly)
Compensation: $120,000 - $150,000 (depending on experience)



Job Responsibilities:
This position involves software development activities that support building and delivering new and innovative software solutions to Aeronautical based applications. Duties will include building AWS services, deep understanding of software languages (C#/Java, Python, Shell), participate in Agile Methodology, perform deployments to multiple development, test and operational environments, patching, troubleshooting, and working with internal teams and departments.

Core Qualifications:

  • The applicant must possess a 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
  • 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
Required Qualifications:
  • Requires BS degree and 8+ years of prior relevant experience OR Masters with 6+ years of prior relevant experience; OR a PhD degree with 4 years of related experience
  • Experience with C#, Java/J2EE, and Typescript is required.
  • AWS experience
  • 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
  • Experience in either software development projects or software integration projects in a service-oriented environment (Cloud, SOA, Web-Services) or virtualization environment 
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)
  • DOD 8570 Compliant Certification (Sec+)


System One, and its subsidiaries including Joulé, ALTA IT Services, and Mountain Ltd., are leaders in delivering outsourced services and workforce solutions across North America. We help clients get work done more efficiently and economically, without compromising quality. System One not only serves as a valued partner for our clients, but we offer eligible employees health and welfare benefits coverage options including medical, dental, vision, spending accounts, life insurance, voluntary plans, as well as participation in a 401(k) plan.

System One is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity, age, national origin, disability, family care or medical leave status, genetic information, veteran status, marital status, or any other characteristic protected by applicable federal, state, or local law.

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