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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Application Developer / Software Engineer - **Company:** Navteca LLC - **Location:** Washington, DC, United States - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** ASP.NET, HTML, Java (Programming Language), JavaScript (Programming Language), .NET Framework, Extensible HyperText Markup Language (XHTML), C Sharp (Programming Language), C++ (Programming Language), Cascading Style Sheets (CSS), Databases, Continuous Integration, Custom Software, Data Conversion, Extract Transform Load (ETL), Software Debugging, Programming Tools, Internet Information Services (IIS), Systems Analysis, Python (Programming Language), Machine Learning, Microsoft Visual Studio, Microsoft Software, Microsoft SQL Server, Oracle (Applications), Microsoft SharePoint, Software Engineering, Software Systems, SQL Databases, SQL Server Reporting Services, Web Applications, Extensible Markup Language (XML), Extensible Stylesheet Language Transformations (XSLT), Data Processing, Marklogic, Git, Programming Languages - **Published:** May 19, 2026 - **Apply:** https://www.indeed.com/viewjob?jk=8895a3b0bee3968e ## About the Role Navteca is seeking a highly experienced Senior Application Developer / Software Engineer to support enterprise-level software development initiatives. The ideal candidate will possess deep technical expertise across all phases of the Software Development Life Cycle (SDLC) and a strong background in designing, developing, and integrating scalable, high-performance applications. This role requires both hands-on technical leadership and the ability to guide development teams while delivering complex solutions in a fast-paced, mission-driven environment., * Programming Languages: ASP.NET, C#, Python, Java, C/C++ * Web Technologies: HTML, XHTML, XML, XSLT, CSS, JavaScript * Databases: SQL, SQL Server, Oracle, MarkLogic * Development Tools: Visual Studio, Git, CI/CD pipelines * Microsoft Stack: .NET Framework, SharePoint, Microsoft Power Platform, IIS * Data & Reporting: SQL Reporting, ETL processing * Emerging Technologies: Artificial Intelligence (AI) / Machine Learning (ML) (preferred), * 7+ years of professional software development experience * Proven experience designing and implementing enterprise-level architectures * Strong experience leading integration and development efforts across complex systems * Ability to optimize performance and troubleshoot advanced system issues * Strong leadership, mentoring, and communication skills * Experience working in government or regulated environments is a plus ## Description * Lead full lifecycle software development efforts, including requirements, design, development, testing, deployment, and maintenance * Develop detailed functional and technical requirements for client-server and web-based applications * Perform advanced system analysis and module-level design of software solutions * Architect and implement highly scalable, high-performance applications * Lead integration efforts across operational, tactical, and strategic systems * Perform complex programming, analysis, and development for web, mobile, and ETL processes * Define requirements, write technical specifications, and design, code, test, debug, and document applications * Provide technical leadership and may supervise or mentor junior developers on large-scale projects * Analyze functional and data processing requirements and recommend optimized technical solutions * Support custom development, COTS customization, reporting, data conversion, and legacy system modernization * Ensure compliance with Fairfax County standards and best practices, * Primary location: Fairfax County Government Center 12000 Government Center Parkway, Fairfax, VA 22035 * Standard hours: Monday-Friday, 8:00 AM - 4:30 PM (30-minute lunch) * May require participation in an on-call rotation * Must adhere to Fairfax County and/or FCPS holiday and inclement weather policies Additional Requirements * Ability to work on-site at County or approved offsite locations as needed * Time worked outside approved hours is not billable * Timesheets must be submitted for all work performed * Staff may not perform work for other clients during assigned County hours ## Related Videos - [Navigating the Corporate Jungle: Life as a Developer in a large Company](https://www.wearedevelopers.com/videos/621-navigating-the-corporate-jungle-life-as-a-developer-in-a-large-company) - [Building Multi-Tenant ASP.NET Core Applications: Best Practices and Real-World Solutions](https://www.wearedevelopers.com/videos/1552-building-multi-tenant-asp-net-core-applications-best-practices-and-real-world-solutions) - [The Resilience of the World Wide Web](https://www.wearedevelopers.com/videos/1281-the-resilience-of-the-world-wide-web) - [How a Small Team Shrank a Microsoft Monorepo by 94%](https://www.wearedevelopers.com/videos/1236-how-a-small-team-shrank-a-microsoft-monorepo-by-94) - [Grappling With Clunky Old Software? 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