The Journeyman Full Stack Application Developer will provide software development and sustainment support to the USSOCOM J6 Budget Tool. The developer will design, code, test, and maintain enterprise-level applications to ensure availability, reliability, and performance. The position requires demonstrated expertise in both front-end and back-end development using Angular, .NET, C#, SQL Server, and Windows Services.The developer will work as part of a cross-functional team in support of mission‑critical financial systems, ensuring compliance with DoD standards, USSOCOM requirements, and cybersecurity policies.ResponsibilitiesDesign, develop, test, and maintain application features in support of the USSOCOM J6 Budget Tool.Implement responsive front‑end interfaces using Angular .Develop back‑end services and APIs using .NET and C# .Design, maintain, and optimize SQL Server databases, queries, and stored procedures.Develop and maintain Windows Services for workflow automation and system integration.Conduct code reviews, unit testing, and integration testing.Ensure applications adhere to DoD cybersecurity and secure coding standards.Support lifecycle management activities including requirements gathering, design documentation, deployment, and sustainment.Collaborate with government stakeholders, business analysts, and other developers to meet mission needs.Required QualificationsRequires BS and 4+ years of prior relevant experience or Masters with 2+ years of prior relevant experience, additional years of experience will be accepted in lieu of a degree.Active TS/SCI clearance (mandatory).DoD 8140/8570 IAT Level II certification (e.g., Security+, CCNA Security, CySA+, GICSP, GSEC, SSCP).3–7 years of experience as an application developer (Journeyman level).Demonstrated experience with:Angular (front‑end development).NET and C# (back‑end development)SQL Server (database development and optimization)Windows Services (design and maintenance)Experience with Agile software development methodologies.Strong problem‑solving, troubleshooting, and analytical skills.Preferred QualificationsExperience with USSOCOM or DoD financial systems.Knowledge of DevSecOps tools, CI/CD pipelines, and automated testing frameworks.Familiarity with containerization (Docker, Kubernetes) and cloud services.Familiarity with PowerApps/ O365 Environment a plus.Experience working within DISA STIGs, RMF, and DoD cybersecurity compliance frameworks.Pay RangePay Range $87,100.00 - $157,450.00Commitment to Non-DiscriminationAll qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.#J-18808-Ljbffr