Top Senior C# Jobs in Washington, DC

The Java Developer will design, develop, test, and maintain Java applications for government systems, collaborate with teams, ensure compliance, and support application deployment.

The role involves developing cross-platform API abstractions for the Unity Editor using modern C++. Responsibilities include maintaining codebases and collaborating with worldwide teams.

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.

Design, develop, and modernize enterprise web applications using .NET/ASP.NET/C#, SQL Server, and modern front-end technologies. Perform testing, troubleshooting, performance tuning, collaborate with cross-functional teams, and support secure, mission-critical government systems.

The Sailpoint Consultant will maintain and support SailPoint IIQ infrastructure, troubleshoot issues, develop scripts, and assist project teams with identity and access solutions.

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.

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.

Design, build, test, and deploy full-stack web applications using the .NET framework. Collaborate with cross-functional teams, write maintainable code, perform unit/integration testing, troubleshoot issues, participate in code reviews, and ensure application performance, quality, and responsiveness.

The Senior Software Engineer will design and build scalable distributed systems, provide technical leadership, and engage in cross-functional collaboration while mentoring other engineers.

Develop backend services for Digital Twin platforms, focusing on orchestration, integration, and runtime behavior while collaborating with Unity developers and data teams.

Responsible for architecting solutions that align with CMS needs, managing complex programs, and mentoring future technologists while adhering to federal standards.

Design and implement digital solutions, write code, collaborate with teams, ensure software performance and security, and maintain documentation.

Develop, maintain, and operate enterprise applications on the .NET platform, ensuring compliance with standards and supporting CI/CD and DevSecOps tools.

Design, build, and scale the Substantiation Platform for validating and reconciling financial data. Provide architectural leadership and mentor engineers.

Lead the design and development of Windows desktop applications, ensuring performance, accessibility, and collaboration with various teams. Oversee the entire feature lifecycle and address complex issues in a user-centric manner.

As a Senior Software Engineer, you'll design architecture, mentor engineers, and drive the adoption of AI practices to enhance development workflows and system reliability.

The Lead Developer oversees the development of enterprise applications, mentoring teams, ensuring quality implementation, and driving continuous improvement in an agile environment.

The Senior Financial Systems Developer designs and implements solutions for business needs, focusing on Elite 3E frameworks and financial applications.

The role involves designing, developing, and testing applications using .NET technologies, building APIs, and implementing AI/ML solutions. Responsibilities include contributing to architectural decisions and mentoring team members.

The Senior ASP.NET Services Engineer designs and develops microservices and APIs for the Committee Portal, managing databases, automation, and DevOps processes while collaborating in an Agile environment.

As a Senior Software Engineer in Test Automation, you'll design automation frameworks, develop CI/CD pipelines, and ensure the quality of VR training products.