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Salary
≈ $107k – $230k per year (Estimated)
Location
In office (Chantilly)
Seniority
Senior
Employment
Full-Time

Confirmed on the employer's own hiring board on Oct 25, 2026. First seen by Alion on Sep 3, 2026. SOSi scores C on the Alion truth index.

Overview
Company
Impact
Profile match
SOS International, known as SOSi, is a privately held American government services company founded in 1989 that began by supplying linguists and interpreters to the United States military. It has since broadened into intelligence analysis, logistics and base operations support, information technology and network engineering, and cybersecurity, working for defence, intelligence and federal civilian customers both in the United States and in deployed locations. Headquartered in Reston, Virginia and still family owned, it employs several thousand people, a large share of them holding security clearances.

Founded in 1989 and headquartered in Reston, Virginia, SOSi is a private defense and government solutions business specializing in advanced technology systems and mission support. Its capabilities include data science, software development, network engineering, intelligence, surveillance, and reconnaissance (ISR), and logistics.

*Position is contingent upon contract award*

SOSi is seeking a Full Stack Developer. In this role the Developer will provide full stack development support to the Sponsor’s web applications’ expanding cloud infrastructure. The Contractor shall leverage coding skills and expertise in cloud computing to design, develop, test, and deploy scalable and efficient web applications, supporting the Sponsor’s customers.

Essential Job Duties

  • Developing new architecture to meet cloud requirements of Sponsor's web applications.
  • Performing operation and maintenance, upgrades, and troubleshooting of Sponsor's web applications in Sponsor's cloud environment.
  • Implementing custom cloud functionality using development languages such as Python, Java, and JavaScript.
  • Customizing existing and creating new tools for displaying, retrieving, and analyzing data in the web environment.
  • Developing new or adapting existing techniques to increase the speed and improve the visual display quality and interactive behavior of Sponsor's web delivery methods.
  • Interfacing with counterparts in other government agencies to identify and ingest data.
  • Programming customized code, scripts; modules, and libraries for analysis functions using appropriate scripting and development languages.
  • Updating and improv1ng Sponsor's existing customized code, scripts, modules, etc. as needed.
  • Testing and troubleshooting Sponsor-developed software solutions in a development/test environment.
  • Maintaining the Extract Transform Load (EFL) process to dynamically pull data from various sources, normalize it, and store it.
  • Adding new data sources based on Sponsor requirements, monitoring existing sources, and troubleshooting and fixing issues as they arise.
  • Performing operations and maintenance, upgrades, and troubleshooting of Sponsor's web applications in Sponsor's outward-fating cloud environment.
  • Assisting with deploying web tools to Sponsor's Cloud architecture.
  • Providing metadata, commented code, user manuals, system requirements, system security plans, and other documents required for future users.
  • Creating and delivering program and project artifacts and deliverables.
  • Supporting Sponsor's and program's strategic and tactical planning activities.
  • Active TS/SCI w/ Poly.
  • Demonstrated professional experience with the following required tools, systems, services, and data types:
    • Programming languages such as Python, Java, JavScript, and C++.
    • Cloud computing services from major providers, including experience with cloud-based development and deployment.
    • Database management systems, such as Oracle.
    • Version control systems, such as Git.
    • Web development frameworks and technologies, such as Flask and Django.

Preferred Qualifications

  • Experience with the Sponsor’s enterprise services, security controls, and data management practices.
  • Familiarity with outward-facing Cloud environment and outward-facing applications.
  • Experience with APIs and data management tools and structures.

Working Conditions

  • Working conditions are normal for an office environment.

Working at SOSi

All interested individuals will receive consideration and will not be discriminated against for any reason.

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