Application Developer Senior Source with Security Clearance

Career Opportunities with Castalia Systems A great place to work. Careers At Castalia Systems Current job opportunities are posted here as they become available. Back To Openings Application Developer, Senior. (Source) Location:
Joint Base Anacostia- Bolling (JBAB), DC START YOUR APPLICATION Job Type: Full- Time Workplace Type: Hybrid Clearance: TS/SCI Must be a U.S. Citizen Job Summary Castalia Systems is seeking an Application Developer Sr. (Source). The Application Developer Sr. will serve on the SOURCE team, the flagship application for EPD. Roles and Responsibilities A qualified candidate will perform the following duties and responsibilities, but are not limited to:

• Provide Full-stack development of a new iteration of the SOURCE that is interactive, leverages AI, and is containerized (transition from VM to containers). Required Qualifications
• Master's degree from an accredited college or university; or a Bachelor's degree from an accredited college or university plus an additional 2 years of related experience.
• Minimum 8 years of experience related to the specific labor category; or a minimum of 10 years of experience related to the specific labor category if individual has a Bachelor's degree.
• Angular, TypeScript, PostgreSQL, Redis, NestJS, Node, ElasticSearch, MongoDB, Docker.
• Node.js with Typescript, SQL, PostgreSQL, Redis, ElasticSearch Preferred Qualifications
• JSON, Java, Java Script, SharePoint, XML, VBAs, Oracle, MongoDB, Solr, SQL, Open AI, other AI technologies.
• CI Poly. Physical Requirements/Work Environment
• Normal office environment.
• Hybrid Support Travel
• Less than 5%.

Company Description Castalia Systems is a proven business partner providing mission critical solutions to the Federal Government. We provide cutting edge solutions from Securing and Managing Data to Systems Engineering and Development. Castalia Systems is a pioneer in Artificial Intelligence Design and Application. With our vast knowledge of our customers’ needs and relevant technology, our team is able to bring successful solutions to every mission.

We are one-upping our competitors by providing premium IT solutions and platforms with cutting-edge technology so it’s so evident when you compare us with anyone. Compensation At Castalia Systems, we provide you with opportunities and choices and support your total well-being. Our benefits include: Medical, dental, vision coverage, 401k matching, generous PTO, paid holidays, professional training opportunities, and even pet insurance to ensure your furry friends are cared for too.

All regularly scheduled employees working at least 30 hours per week are eligible to participate in Castalia Systems’ benefit programs. Individuals that do not meet the threshold are only eligible for select offerings, not inclusive of health benefits. Salary at Castalia Systems is determined by various factors, including but not limited to location, position knowledge, skills, competencies, and experience, as well as contract-specific affordability and organizational requirements. The projected compensation range for this position is $180,000.00 to $190,000.00 (annualized USD).

The estimate displayed represents the typical salary range for this position and is just one component of Castalia Systems’ total compensation package for employees. Disclaimer Castalia Systems is an equal employment opportunity and affirmative action employer and strives to comply with all applicable laws prohibiting discrimination based on race, color, creed, sex, sexual orientation, age, national origin, or ancestry, physical or mental disability, veteran status, marital status, HIV-positive status, as well as any other category protected by federal, state, or local laws.

All such discrimination is unlawful, and all persons involved in the operations of the company are prohibited from engaging in this type of conduct. Visit Our Home Page © 2026 Castalia Systems Applicant Tracking System