> Markdown version of [/jobs/ext/2569163-custom-developer-net](https://www.wearedevelopers.com/jobs/ext/2569163-custom-developer-net). 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). --- # Custom Developer (.NET) - **Company:** Seneca Resources - **Location:** Washington, DC, United States - **Contract:** Permanent contract - **Skills:** ASP.NET, .NET Framework, Agile Methodology, Data Manipulation Languages, Github, Revision Control Systems, Oracle Databases, Oracle (Applications), SQL Databases, Subversion, Web Applications, Gitlab, Git, Codebase, Software Version Control, Legacy Systems - **Published:** August 6, 2026 - **Apply:** https://public-rest40.bullhornstaffing.com/rest-services/R0SYP/query/JobBoardPost?where=id=47670&fields=id,title,publishedCategory(id,name),address(city,state),employmentType,dateLastPublished,publicDescription,isOpen,isPublic,isDeleted ## About the Role * Proven experience with .NET development and ASP.NET architecture * Strong knowledge of Oracle databases, SQL (DDL/DML), and database management in production environments * Experience with version control tools such as Git, GitLab, GitHub, Git Actions, or SVN * Active Top Secret security clearance * On-site presence in Washington, DC, Monday through Friday * Excellent written and verbal communication skills in English ## Description Seeking a highly skilled .NET Developer to maintain and enhance mission-critical web applications utilizing Oracle databases. This role involves taking ownership of existing codebases, troubleshooting bugs, supporting production environments, and implementing new features. Candidate will collaborate within an Agile team, create documentation for legacy systems, and ensure seamless deployment and version control. If you are a proactive problem-solver with strong communication skills and experience with .NET, Oracle, and version control systems, this is an excellent opportunity to contribute to vital government projects on a long-term contract with confirmed funding through 09/26/2027. ## 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) - [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) - [WeAreDevelopers LIVE - Modern DevOps for IoT Devices and More](https://www.wearedevelopers.com/videos/1805-wearedevelopers-live-modern-devops-for-iot-devices-and-more) - [Innovating Developer Tools with AI: Insights from GitHub Next](https://www.wearedevelopers.com/videos/1268-innovating-developer-tools-with-ai-insights-from-github-next) - [Automated MS SQL Server database deployments with dacpacs and Azure DevOps](https://www.wearedevelopers.com/videos/334-automated-ms-sql-server-database-deployments-with-dacpacs-and-azure-devops) - [Git for Code Reviews](https://www.wearedevelopers.com/videos/429-git-for-code-reviews) ## Related Articles - [Dev Digest 120 - Apple and peers](https://www.wearedevelopers.com/magazine/455-dev-digest-120-apple-and-peers) - [Dev Digest 121 - AI goes offline](https://www.wearedevelopers.com/magazine/456-dev-digest-121-ai-goes-offline) - [Why Attend a Developer Event in 2026?](https://www.wearedevelopers.com/magazine/688-why-attend-a-developer-event-in-2026) - [Dev Digest 176: Expensive Agents, Taking Over VSCode and Safer Vibe Coding](https://www.wearedevelopers.com/magazine/603-dev-digest-176-expensive-agents-taking-over-vscode-and-safer-vibe-coding) - [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) - [Top Must-Visit Developer Conferences in the US in 2026](https://www.wearedevelopers.com/magazine/679-top-must-visit-developer-conferences-in-the-us-in-2026)