Top C# Jobs in Washington, DC

Develop and enhance GIS capabilities within a core C++ OMS application, configure map services, design cartography, integrate spatial databases, resolve spatial data issues, and collaborate with product teams using Jira and GitHub.

The .Net Developer will build software applications, collaborate with team members, document technical specifications, and resolve software issues.

The .Net Developer will design, develop, and maintain software applications, lead initiatives, document requirements, and resolve software issues.

Develop and implement a modern web information portal using front-end technologies, ensuring compliance with UX and 508 standards. Collaborate with stakeholders and integrate systems while managing project timelines and quality.

Develop and maintain applications, manage infrastructure, implement system improvements, and interact with customers to ensure timely support ticket closures.

The Sr. .NET Developer will support business functions by developing, implementing, and maintaining application systems, focusing on BI tools and Web APIs.

The Oracle PL/SQL Developer will provide infrastructure and back-end support, perform application testing and installation, and support user community by resolving database issues and performing UNIX administration functions.

The .Net Developer will support business functions by developing, implementing, and maintaining applications, collaborating in a Scrum Team, and ensuring software meets specifications.

Senior .NET Full Stack Developer responsible for designing, developing, testing, and enhancing enterprise .NET applications, integrating third‑party components, optimizing C#/ASP.NET code, automating operational workflows, and supporting large‑scale data processing and analytics. Works with lead architects across the SDLC and conducts architecture reviews, code reviews, and knowledge transfer.

Support DHS S&T C-UAS system integration, testing, and assessment. Lead engineering efforts to evaluate C-UAS effectiveness, develop test plans, review vendor documentation, refine requirements, and coordinate IPTs. Provide technical guidance, produce technical reports, and support project management and field engineering for mission execution.

Design and implement multi-agent optimization, planning, and constraint-satisfaction algorithms for real-time autonomous decision-making across heterogeneous domains. Build temporal logic frameworks, probabilistic decision-process models, and efficient, human-interpretable computational systems. Measure and optimize algorithm performance, develop in Bazel/Docker/Linux environments, and support demonstrations, integrations, and customer engagements.