Top Remote C# Jobs in Washington, DC

Seeking a Senior Full Stack .NET Developer to work on a social good project, with strong skills in C#, AngularJS, design, and UX. Requires 5+ years of experience.

Own and resolve complex, recurring trader-impacting issues by reproducing, diagnosing, and shipping code fixes. Write backend C#/.NET and React front-end code, build admin tooling, improve observability, lead incident response and post-incident reviews, and partner across engineering, QA, Cloud Ops, and Product to reduce recurring support toil.

The Test Automation Engineer will develop automated testing frameworks for Esri software, execute tests, manage defects, and ensure compliance with federal standards.

As a Principal Software Engineer, you will architect AI-enabled systems, mentor teams, and guide technical decisions for scalable products.

Lead enterprise architecture for client reporting programs: set strategy for cloud data platforms, end-to-end pipelines, integrations, governance, and delivery. Guide program planning, chair governance, mentor teams, drive best practices, and commercialize client reporting offerings. Act as senior advisor to clients and accountable owner for architecture and delivery excellence.

The Associate Staff Engineer will lead automation testing efforts utilizing various tools and frameworks while mentoring teammates and implementing agile practices.

The Staff Engineer will leverage 5+ years of experience in C#, JavaScript, and frameworks to lead and innovate solutions in a collaborative environment.

As a Senior Full-Stack Engineer, you will design and deploy solutions for state governments, ensuring high standards of security and privacy while leading cross-functional teams.

Lead and architect automated test strategies and frameworks for web and mobile apps. Mentor test engineers, develop and maintain automated tests (API, integration, regression, performance), integrate with CI/CD, execute end-to-end and manual tests as needed, manage defects and metrics, and collaborate with Agile teams to ensure software quality across platforms and devices.

Lead design, development, and maintenance of cloud hosting management and orchestration solutions. Mentor engineers, review code for quality and security, design REST APIs, troubleshoot issues, improve performance and reliability, and drive requirements and architecture decisions to enhance customer experience.

Lead backend development using C#/.NET and cloud-native technologies. Build and maintain APIs, ensure quality and performance, troubleshoot issues, conduct code reviews, and drive software/process improvements.

Lead and mentor a distributed team building a realtime, cross-platform renderer. Drive delivery, technical strategy, and engineering practices; collaborate with R&D, product, and integrations to turn neural-rendering research into production-quality, high-performance rendering across web, mobile, desktop, and headset platforms.

Design and build cloud-native, highly available systems and serverless applications on Azure. Implement Infrastructure-as-Code, develop TypeScript/React/NestJS applications, create APIs for web/mobile/IoT, write automated tests, deploy frequently, and participate in production support and on-call rotations while working in agile teams.

Design, build, test, deploy, and maintain responsive web applications and back-end services for mortgage origination, servicing, sales, and operations. Create and optimize RESTful APIs, integrations, databases, and reusable UI components; ensure security, accessibility, performance, and CI/CD-driven delivery while collaborating with stakeholders and participating in Agile processes.

Senior individual contributor responsible for designing and building complex, customer-facing product features. Own technical decisions within product areas, collaborate with Product and Design, contribute to architecture, maintain code quality, mentor engineers, and participate in production support.

Design, develop, and deploy Power Platform and Dataverse solutions, including Power Automate flows, C# plugins, JavaScript, Dual Write, and Power Fx. Manage small Power Apps projects, delegate to offshore teams, build data migrations/integrations, resolve support issues, and maintain client relationships while following established methodologies and training goals.

Design, develop, test, and maintain software components for an enterprise CPM platform. Implement UI, APIs, and data access using Microsoft stack and modern frameworks, participate in code reviews, debug defects, write unit tests, and follow SDLC, security, and compliance protocols.

Lead sustainment, modernization, development, integration, and lifecycle management of enterprise applications. Design, build, test, and deploy solutions using .NET, C#, web frameworks, APIs, and low-code platforms. Support CI/CD/DevOps, troubleshoot complex issues, mentor teams, and produce technical documentation.

Design, develop, maintain, and enhance SmartCop public-safety applications across the software development lifecycle. Collaborate with cross-functional teams, use C#/.NET and MS SQL Server, consume/develop web services, apply object-oriented design, leverage AI-assisted development tools, participate in code reviews, and follow automated testing and quality-focused practices. Support deployment, troubleshooting, and implementation decisions while meeting North American Central Time collaboration requirements.

Design, develop, and maintain secure, scalable C#/.NET microservices running in Azure and Kubernetes. Implement data access with Azure Cosmos DB and Azure SQL, build RabbitMQ event-driven workflows, automate Azure infrastructure with Terraform, and manage CI/CD via Azure DevOps. Integrate with identity providers, ensure tenant-aware access control, perform code/design reviews, and mentor engineers while aligning systems with security and privacy requirements.

Design, build, and maintain shared backend platform services (C#/.NET, Node/TypeScript, Postgres/Redis, AWS). Improve reliability, performance, observability, and CI/CD for high-throughput, transaction-heavy workflows. Collaborate with product, payments, data, and infra teams, drive architecture and rollout, mentor engineers, and adopt AI-assisted development practices.

Design and lead architecture for scalable, secure cloud-native applications on GCP; define agentic AI architectures, APIs, and integration strategies; mentor teams, enforce governance, and drive DevOps, observability, and performance best practices.

Design, develop, modernize, test, and maintain data-driven software and relational databases for FAA aeronautical information distribution. Gather requirements, implement COTS integrations, troubleshoot production issues, produce technical documentation, participate in reviews, and provide technical leadership and mentoring across the software development lifecycle.

Build, own, and operate cloud-native .NET services powering real-time trading, market data, and brokerage integrations. Ship features end-to-end, write tests, participate in on-call rotations, improve observability, and occasionally contribute to React/TypeScript frontend work.

Design and implement PostgreSQL internals and indexing strategies for large-scale document workloads. Extend query engine with BSON-aware operators and custom scan nodes, optimize index pruning, profile distributed system performance, collaborate with open-source communities, and lead design/code reviews.