> Markdown version of [/jobs/ext/447237-software-developer-net-sign-on-bonus-eligible](https://www.wearedevelopers.com/jobs/ext/447237-software-developer-net-sign-on-bonus-eligible). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Software Developer (.NET) (Sign-on Bonus Eligible) - **Company:** Amentum Services, Inc. - **Location:** Fort Meade, MD, United States - **Experience:** Experienced - **Salary:** $140,000.0 - $147,000.0 - **Contract:** Permanent contract - **Skills:** ASP.NET, HTML, JavaScript (Programming Language), .NET Framework, Ajax (Programming Language), Microsoft Azure, Bootstrap (Software), Software Bug Management, C Sharp (Programming Language), Cascading Style Sheets (CSS), CompTIA Security+, Continuous Integration, Relational Databases, Dependency Injection, DevOps, Language Integrated Query, Document Object Model, Middleware, Entity Framework, Hypertext Transfer Protocols (HTTP), Internet Information Services (IIS), Integrated Development Environments, Microsoft Visual Studio, Microsoft SQL Server, Object-Oriented Software Development, Reverse Engineering, Software Engineering, SQL Databases, Web Applications, Extensible Markup Language (XML), .NET Core, Database Performance, Git, Data Management, Front End Software Development, SQL Server Management Studio (SSMS), Software Version Control, Web Api - **Published:** June 3, 2026 - **Apply:** https://dejobs.org/x/x/32892E16748C440C93FCBDAE76402916/job/ ## About the Role We are seeking Software Developers and Data Analysts with at least two years of experience in website coding, basic graphics techniques, Structured Query Language (SQL), Hypertext Markup Language (HTML), and Extensible Markup Language (XML)., * Master's degree in a relevant field and 12 years' relevant experience; with a portion of the experience within the last 2 years, or * Bachelor's degree and 14 years of relevant experience, or * Associate degree and 16 years of relevant, or * High school diploma and 20 years of relevant experience. * Security Plus certified * 10+ years of professional software development experience with a strong focus on .NET technologies. * .NET Core Expertise: Deep understanding and practical experience with .NET Core development. * C# Proficiency: Exceptional C# programming skills with a thorough understanding of object-oriented programming principles. * EF Core & SQL Server: Extensive experience with Entity Framework Core, Code First, Migrations, and SQL Server. * JavaScript & Front-End Technologies: Solid understanding of JavaScript, HTML, CSS, and modern front-end frameworks (e.g., Bootstrap). * DevOps Proficiency: Proficient with Azure DevOps and Git for source control, CI/CD, and collaboration. * Problem-Solving: Exceptional analytical and problem-solving skills. Clearance Required: * Current TS with SCI eligibility Preferred: * Understanding of ASP.NET Core 6.0 and related concepts to include Razor Pages, Dependency Injection and Middleware. * Knowledge of Cascading Style Sheets (CSS) and UI layout frameworks (i.e. Bootstrap, Flexbox, etc). * Experience reverse engineering legacy source code to implement priority bug fixes and enhancement requests. * Working knowledge of IIS and Web application deployments. * TS/SCI. #javelin ## Description The .NET Core Developer will be a key contributor to the development and maintenance of SENTINEL, a web-based application used to track counterintelligence related entities and their relationships. This role requires an exceptional developer with deep expertise in .NET Core, C#, and related technologies. Responsibilities: * Software Development: o Develop new, cutting-edge software solutions for SENTINEL utilizing strong C# programming skills. o Maintain and enhance existing functionality within the SENTINEL application. o Contribute to the design and architecture of new features and components. * .NET Core Application Development: o Develop enterprise-level web applications utilizing .NET Core, Razor Pages, Dependency Injection, Web APIs, and HTTP request/response handling. * Data Management: o Utilize Entity Framework (EF) Core, Code First, Migrations, and LINQ syntax to manage data interactions with SQL Server, including data insertion, querying, updating, and deletion. * Development Environment & Tools: o Daily use of Visual Studio and SQL Server Management Studio for bug fixing and new functionality development. o Daily use of Azure DevOps and Git for source code management, version control, and collaboration. * Database Administration & Optimization: o Utilize a strong understanding of SQL Server and relational database principles to create, modify, and delete database objects. o Troubleshoot and address database performance issues. * Front-End Development: o Possess exceptional JavaScript development skills. o Implement AJAX calls, form validation, DOM manipulation, and interactivity using JavaScript. o Style web applications utilizing CSS and UI layout frameworks such as Bootstrap 5 to create visually appealing and consistent user interfaces. * Collaboration & Mentorship: o Collaborate with other developers, analysts, and stakeholders throughout the software development lifecycle. ## Related Videos - [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) - [The Resilience of the World Wide Web](https://www.wearedevelopers.com/videos/1281-the-resilience-of-the-world-wide-web) - [From DevOps to Scaled DevOps: How We’re Rebuilding Continuous Delivery as a Platform](https://www.wearedevelopers.com/videos/100018-from-devops-to-scaled-devops-how-we-re-rebuilding-continuous-delivery-as-a-platform) - [Security Pitfalls for Software Engineers](https://www.wearedevelopers.com/videos/726-security-pitfalls-for-software-engineers) - [Git for Code Reviews](https://www.wearedevelopers.com/videos/429-git-for-code-reviews) - [Grappling With Clunky Old Software? Start by Understanding What’s Inside!](https://www.wearedevelopers.com/videos/1189-grappling-with-clunky-old-software-start-by-understanding-what-s-inside) ## Related Articles - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated) - [Where to Find Entry-Level Software Engineering Jobs](https://www.wearedevelopers.com/magazine/397-where-to-find-entry-level-software-engineering-jobs) - [Dev Digest 121 - AI goes offline](https://www.wearedevelopers.com/magazine/456-dev-digest-121-ai-goes-offline) - [Find a Developer Job: 12 Best Job Sites For Developers](https://www.wearedevelopers.com/magazine/165-find-a-developer-job-12-best-job-sites-for-developers) - [The Most Popular IT Jobs on the Market](https://www.wearedevelopers.com/magazine/376-the-most-popular-it-jobs-on-the-market) - [What’s the Difference between a Junior, Mid, and Senior Developer?](https://www.wearedevelopers.com/magazine/238-what-s-the-difference-between-a-junior-mid-and-senior-developer)