Top C# Jobs in Washington, DC

Develop and maintain OneStream applications using .NET for federal financial management, reporting, planning, and budget execution. Build business rules, data management solutions, workflows, and integrations with financial systems. Translate business requirements into technical designs, support testing and deployment, troubleshoot issues, and collaborate with finance stakeholders and technical teams. The role requires strong .NET, VB.NET, SQL, data modeling, and financial systems experience, along with eligibility to obtain a federal security clearance.

Supports technical development and testing of Windows desktop operating system images for a U.S. Attorneys’ Office customer. Responsibilities include Windows 11 administration, Active Directory and Group Policy, enterprise imaging and deployment, Intune and Autopilot management, PowerShell automation, endpoint security, patching, vulnerability remediation, monitoring, hardware and driver lifecycle management, virtualization support, and troubleshooting complex desktop and application issues.

Develops, integrates, tests, deploys, maintains, and troubleshoots enterprise software across Microsoft platforms. Translates stakeholder requirements into secure web, desktop, cloud, API, and Microsoft 365 solutions. Builds AI-enabled and generative AI applications using LLMs, supports enterprise integrations, evaluates development standards and technologies, and provides technical leadership across projects. The role also collaborates with vendors, documents systems, supports lifecycle roadmaps, and advises legal and administrative stakeholders.

Designs, develops, configures, and deploys Microsoft Power Platform and Copilot Studio solutions for clients. Responsibilities include discovery, architecture, custom development, automation, data modeling, visualization, testing, documentation, training, demonstrations, governance, security management, and production support. The role collaborates with stakeholders and development teams while serving as a Power Platform subject matter expert.

Develop and integrate custom-coded network monitoring and management tools using APIs, dashboards, databases, and enterprise technologies. Design, configure, test, document, and deploy solutions supporting global Cisco and Microsoft network environments. Collaborate with network engineers, DBAs, technical SMEs, customers, and contractor management while evaluating existing systems and recommending solutions. The role requires customer interaction, independent work in a small team, and support of Department of State network operations on secured hardware.

Develop and maintain C#/.NET applications throughout the software development lifecycle, including requirements analysis, architecture, coding, testing, debugging, integration, and configuration. Collaborate with clients and team members to prioritize development backlogs and plan releases. Build reliable, reusable code, analyze system requirements, and support applications using .NET technologies, SQL, APIs, JavaScript, and related systems.

Develops, tests, maintains, and troubleshoots enterprise and government Java applications. Designs APIs, supports architecture and documentation, integrates Java and .NET technologies, and contributes to CI/CD automation. Collaborates with analysts, QA, administrators, and stakeholders while ensuring application security, performance, reliability, and compliance with government standards. Requires Java, Spring, database, API, and Microsoft technology experience in a structured, compliance-driven environment.

Designs, develops, tests, deploys, and enhances Microsoft Power Platform applications and automated solutions. Translates user stories into secure, maintainable technical implementations using Power Apps, Power Automate, databases, web technologies, APIs, and low-code platforms. Responsibilities include agile collaboration, unit testing, troubleshooting, performance validation, documentation, training, knowledge transfer, and application security.

Develop and maintain custom applications, APIs, integrations, reports, automation, and AI-enabled solutions for business functions including Finance, HR, Payroll, and Legal. Gather requirements, improve workflows, troubleshoot systems, support deployments, document solutions, and implement security and data governance controls. Collaborate with technical and non-technical stakeholders, vendors, and third-party providers while delivering solutions in a Microsoft .NET environment.

Develop and maintain Microsoft 365 solutions, including SharePoint architectures, Power Automate workflows, Power Apps interfaces, Power BI reporting, and data structures. Troubleshoot workflow, permissions, data, Excel, Access, and VBA issues; support data governance, migrations, testing, version control, and AI-connected workflows. Serve as a technical subject-matter expert, document solutions, gather requirements, and communicate technical decisions to business partners.

Entry-level engineering applicants will support electrical control-system design for municipal and industrial infrastructure projects. Responsibilities include developing automated control systems, inspecting installations, testing field instrumentation, troubleshooting, startup support, and collaborating across disciplines. The role provides mentorship and training while requiring proficiency with engineering software, PLC/SCADA systems, and basic programming. An EIT certification is required within one year, with encouragement to pursue PE licensure.

Designs and architects IVR solutions for large government programs, including call flows, scripts, dialogues, telephony and backend integrations. Collaborates with stakeholders and technical teams, leads implementation, conducts code reviews, troubleshoots issues, and ensures quality standards. Provides technical leadership, mentors junior staff, and stays current with IVR technologies. Requires substantial IVR, telephony, voice application development, programming, and platform experience.

Develop, test, deploy, maintain, and support enterprise software applications for a government customer. Responsibilities include designing application architectures, building front-end, business logic, REST API, and database components, creating Power BI reports, automating testing with Selenium, troubleshooting production issues, and assisting with deployments, configuration, upgrades, and documentation in an Agile Kanban environment.

Develops and maintains e-discovery software solutions using MVC.NET, C#, SQL Server, PowerShell, and related technologies. Responsibilities include requirements gathering, system and functional design, coding, testing, deployment, troubleshooting, documentation, process improvement, automation, and collaboration with government clients, end users, vendors, and IT personnel. The role supports high-volume electronic data management and analysis for a federal client.

Designs, integrates, deploys, and troubleshoots autonomy and vehicle-intelligence systems across embedded hardware and software platforms. Responsibilities include integrating sensors, autopilots, datalinks, PNT/GPS/INS, and ground control stations; supporting UAV flight tests; conducting SIL and HIL validation; collaborating with vendors and defense customers; and delivering customer demonstrations. The role requires strong C++ development, robotics integration, networking, embedded Linux, and eligibility for a U.S. security clearance.

Designs, develops, tests, and maintains enterprise application services, APIs, business logic, data-access layers, and integrations. The role includes modernizing legacy systems, building automated tests, participating in CI/CD and code reviews, resolving production issues, and applying secure coding and observability practices. Engineers collaborate with product, cloud, quality, architecture, security, and client teams, with opportunities to lead complex services, establish technical patterns, mentor engineers, and influence modernization decisions.

As a Mixed Reality Developer, you will create high-performance Mixed Reality applications, collaborating with cross-discipline teams to deliver innovative solutions for mission-critical operations.

Leads Agile full-stack engineering teams through design, development, testing, deployment, and support. Guides architecture, code quality, mentoring, technical risk management, operational priorities, and cross-functional delivery. Develops secure enterprise applications using Java, Angular, .NET, AWS, Docker, EKS, databases, Kafka, and CI/CD tooling. Coordinates with federal stakeholders, vendors, cybersecurity, infrastructure, and identity teams while supporting change management, incident response, governance, and production troubleshooting.

Build and maintain scalable full-stack web applications using .NET, React, Next.js, and Azure. Responsibilities include feature delivery, API and microservices development, testing, code reviews, architecture, performance optimization, security, CI/CD support, cloud deployment, and production support. Senior engineers will mentor teammates and influence engineering standards, while early-career engineers receive mentorship and progressively greater ownership.

Leads hands-on development of full-stack applications using .NET, React, Next.js, and Azure. Owns architecture, coding, code reviews, testing, security, reliability, observability, production support, and cloud deployment. Integrates AI and GenAI capabilities such as LLM features, RAG, semantic search, and agentic workflows. Mentors engineers, establishes technical standards, collaborates with stakeholders, supports hiring, and helps deliver scalable, secure software.

Develop and support applications using Oracle, SQL Server, MySQL, PostgreSQL, Node.js, TypeScript, and emerging cloud and AI technologies. Build database procedures, functions, packages, web service integrations, and application-to-database solutions. Collaborate with stakeholders and technical teams, incorporate user feedback, support multiple initiatives, and solve complex application development problems. The hybrid role supports DIA in Washington, D.C., requires TS/SCI clearance and willingness to take a CI polygraph.

Develop, test, deploy, and maintain full-stack web applications using .NET and React. Design scalable front-end and back-end solutions, troubleshoot technical issues, participate in code reviews, and follow software development best practices. Collaborate with designers, product managers, and developers throughout the software lifecycle. The role requires onsite work in Washington, DC and an active Top Secret clearance.

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

The Jr. SQL Developer will work on MS SQL Server, performance tuning, software design, development, testing, and debugging. Participate in the full project lifecycle.

The Jr. SQL Developer will work with MS SQL SERVER, focusing on database performance tuning, software design, and project lifecycle participation under the guidance of a Project Manager.