Top C# Jobs in Washington, DC

Design, develop, test, and maintain data-intensive applications, scalable data pipelines, backend services, APIs, and AI-powered solutions. Build Spark and Databricks workloads, orchestrate workflows with Airflow, and manage cloud infrastructure with Terraform. Collaborate with architects, product owners, and stakeholders in an agile environment to deliver secure, scalable, high-quality solutions while applying AI-assisted development tools and supporting UI integrations.

Programmer Intern supporting enterprise software for the U.S. Navy’s Strategic Systems Programs. Responsibilities include developing applications and modules, administering COTS/GOTS software, documenting program development, resolving system issues, applying patches and upgrades, and building add-on modules. The role requires collaboration across teams, strong communication, independent work, and foundational programming knowledge. Candidates must be sophomores or later in a related degree program with a minimum 2.8 GPA.

Lead large-scale software engineering efforts focused on modernizing monolithic systems into distributed, scalable architectures. Make major code design decisions, develop technical solutions, improve CI/CD tooling and TDD practices, and maintain reliable systems using C#, .NET, React, AWS, and Kubernetes. Mentor engineers, contribute to engineering standards, participate in agile delivery and code reviews, and collaborate with product, design, and international engineering teams.

Designs, develops, and maintains enterprise Power Platform solutions using Power Apps, Power Automate, Dataverse, and Power BI. Leads architecture, integrations, governance, ALM, security, DevOps deployments, and solution lifecycle management. Develops PCF controls, JavaScript/TypeScript components, and C# plugins; integrates Azure services and external systems. Conducts technical workshops, code reviews, documentation, and mentoring while collaborating with stakeholders, architects, product owners, and business analysts.

Develop and support Microsoft Power Platform solutions and migrations for the FBI. Responsibilities include gathering requirements, designing user interfaces, conducting usability testing, building Power Apps, automating workflows with Power Automate, modeling data in Dataverse, integrating Microsoft and third-party services, and creating Power BI dashboards and reports.

Develop, implement, test, and maintain .NET software solutions for a government customer. Responsibilities include collaborating on requirements, writing maintainable code, troubleshooting production issues, participating in code reviews, using source control and development tools, and applying Agile practices. The role also involves staying current with AI-assisted development and emerging software technologies.

Develop and maintain .NET applications, APIs, web services, integrations, automation scripts, and database-driven solutions. Build secure data exchange workflows across enterprise systems, Microsoft 365, SharePoint, Azure, and external APIs. Troubleshoot and optimize applications, document technical solutions, collaborate with stakeholders, and support deployments and user adoption.

Develop and maintain OneStream solutions for federal finance clients, including application configuration, business rules, data management, cube and dimension modeling, workflows, integrations, testing, troubleshooting, and deployment. Translate financial and client requirements into technical designs while supporting reporting, planning, budget execution, data quality, and process improvement. Collaborate with stakeholders and provide technical guidance throughout solution implementation and sustainment.

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.

Design, build, test, and maintain tax-focused software solutions using Java, Python, C# and JavaScript. Apply ATDD and CI/CD, create APIs and microservices, perform code reviews and debugging, manage project delivery, and collaborate with cross-functional teams to improve business processes and client outcomes.

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.

Design, implement, deploy, and operate large-scale distributed backend systems and Azure infrastructure for AI-driven insights. Apply generative AI/ML, build IaC and CI/CD pipelines, support live-site operations, and execute onboarding and operational tasks for GCC‑High/DoD environments while ensuring security, observability, and cross-team collaboration.

Designs, develops, tests, debugs, enhances, and integrates software applications for federal government customers. The role researches emerging technologies, addresses hardware and software compatibility issues, contributes to technical documentation, troubleshoots application and hardware problems, supports customers, and prepares project reports. This onsite Washington, DC position requires an active Top Secret clearance with SCI eligibility, a bachelor's degree or equivalent experience, and CompTIA Security+ certification.

Designs and implements advanced modeling and simulation tools to evaluate system performance and support strategic decision-making for national defense. The role involves quantitative analysis, agent-based and physics-based modeling, AI/ML optimization, reinforcement learning, EO-IR and 3D simulation, and collaboration with government clients. Preferred experience includes high-performance computing, computer vision, parallel programming, autonomous systems, and Linux or Unix environments.

Develop Temporal workflows and Go services to automate cloud operations, build reliable SRE platforms, participate in on-call/incident response, debug distributed systems, and enable self-service through documentation and CI/CD automation.

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.

Designs and delivers cloud-based software solutions with strategic customers and Microsoft product teams. Leads requirements definition, architecture, dependency identification, design documentation, and development of maintainable code. Mentors engineers, contributes to open-source assets, coordinates project and release plans, and serves as a designated responsible individual for system reliability, monitoring, on-call support, performance, and operational improvements.

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.