**Overview** SOS International LLC (SOSi) is seeking a highly qualified **Senior Application Developer** to join our team in support of our government customer. The Senior Application Developer will perform as a technical expert in the area of system integration and application development supporting the operation, maintenance, and modification of the ARIMS family of applications. **Essential Job Duties** + Support the project manager in overseeing project operation, planning, and execution. + Formulate objectives and levels of effort through research and fact-finding with customer representatives and project managers. + Be responsible for the software development life cycle from planning to implementation to testing and documenting, to deployment and maintenance. + Assist the project manager and client in developing a schedule/timeframe for each project to ensure each one is executed efficiently and in a timely manner. + Create and maintain complete and accurate documentation on all supported applications. + Oversee technical issues related to the operation, maintenance, and modification of GOTS application. + Work with customer stakeholders to design or customize software with a focus on optimizing operational efficiency. + Apply knowledge of hardware and/or software engineering principles. + Design and/or customize software for client use to optimize operational efficiencies. + Monitor application performance and perform application changes to optimize performance. + Analyze and design GOTS applications and systems with a focus on improving functionality and stakeholder usability. + Provide evaluations and recommendations of GOTS applications and systems to provide solutions to complex technical challenges. + Follow all applicable agency policies, procedures, and regulations. + Provide technical guidance to lower-level developers and engineers. **Minimum Requirements** + Bachelor’s degree or postgraduate degree in engineering, scientific, technical, or business management disciplines from an accredited college or university. + A minimum of 5 years of technical supervisory experience in an application/software development environment. + An active in scope Top Secret security clearance or a Secret with the ability to obtain a Top Secret. + Experience with GOTS applications such as ARMIS, AAO, ACOTD, FACTS, MDR, or ADAMS. + Experience with Microsoft SQL and the .NET framework. + Experience with Configuration Management processes including Change Control Boards (CCB). + Ability to schedule, track, and perform across multiple concurrent projects. + Must have demonstrated the ability to communicate with a variety of stakeholders in multiple formats. + Must possess baseline and computing environment certifications for IAT-II IAW DoD 8570.01-M (CCNA-Security, CySA+, GICSP, GSEC, Security+, CND, or SSCP). **Work Environment** + Normal office conditions. + Core hours of operation are Monday through Friday, 0600 - 1700. + On government site within Ft. Belvoir, VA.