Top Remote C# Jobs in Washington, DC

Provide L2/L3 support and enhancements for Microsoft Dynamics workloads; build and maintain Azure Functions and integrations; manage CI/CD with Azure DevOps; triage and remediate cloud vulnerabilities daily; support DR readiness, performance tuning, and controlled releases to production.

Lead a team of software engineers to deliver backend services, platform components, automation, observability, and AI-assisted tooling. Own end-to-end delivery, architecture, testing, and operational readiness. Drive engineering standards, cross-functional collaboration, hiring, coaching, and continuous improvement with emphasis on security, reliability, and scalable platform patterns.

Develop and maintain Tailscale's Windows client and contribute to cross-platform client and backend code. Build UI and platform integrations using WinUI/Windows native frameworks, write unit and integration tests, implement Windows platform features while preserving compatibility, and collaborate asynchronously across a distributed engineering team.

Design, build, and maintain applications, APIs, and services for Magna's Jury Consulting business; partner with stakeholders to translate requirements; contribute to architecture, CI/CD, testing, DevOps, production reliability, and AI-assisted development; mentor engineers and evaluate emerging technologies.

Lead design and delivery of scalable, secure lending and credit card solutions. Drive cloud-first modernization (Azure/cloud), API and integration strategy, production stability, prototypes, and mentor engineering teams while influencing enterprise architecture and business-aligned technical direction.

Lead design and delivery of Microsoft Dynamics 365 and Power Platform solutions including requirements gathering, architecture, integrations, customizations, data migration, and full project lifecycle implementation. Collaborate with clients and technical teams, mitigate risks, refine specifications, improve delivery processes, and travel to customer sites for demos and meetings.

Develop, test, and maintain web applications across the full application lifecycle. Write clean object-oriented code, implement REST APIs, work with relational and NoSQL databases, deploy to cloud-native infrastructure, participate in Agile teams, support production systems (on-call), and create automated tests for reliability and performance.

Senior .NET full-stack developer responsible for custom application development, API integrations, database optimization, deployments, troubleshooting, performance, security, and production support using .NET/C#, ASP.NET Core, SQL, modern frontend frameworks, cloud, and CI/CD.

The role involves developing APIs, building internal tools, and collaborating with teams to enhance system performance while solving engineering challenges.

The Software Engineer (Fullstack) at Sumble will develop and optimize software applications, manage data integration, enhance security, and ensure a high-quality user experience.

Lead end-to-end technical strategy and modernization of iHerb's product catalog platform. Define architecture, data models, APIs, and service boundaries; write production code; drive cross-team technical decisions, mentorship, and AI-driven SDLC standards. Coordinate multi-team efforts, ensure engineering quality, and represent engineering across product, data science, security, and infrastructure.

Own and modernize iHerb's product catalog across backend, React frontend, and relational data. Build end-to-end features, use AI-driven SDLC tools, write automated tests, ensure observability, participate in on-call incident response, and contribute to shared engineering standards.

Lead the architecture and evolution of SHI's eCommerce platform, focusing on design, scalability, security, and collaboration with stakeholders while mentoring engineers.

Lead design and delivery of full-stack imaging features, architect high-performance ASP.NET Core services, build Vue frontends, integrate APIs with EMRs and imaging partners, mentor engineers, enforce automated testing, CI/CD and observability, and drive technical roadmap in an Agile team.

Design, build, and test APIs and services for RoadieXD; develop internal and customer-facing React tools; partner with Product and Operations to deliver scalable, reliable features; influence architecture, write maintainable code, and improve system performance and developer experience.

Lead an engineering domain (Consumer, B2B, or Backend), owning technical direction, delivery, system health, architecture, and team development. Translate business needs to technical plans, manage cross-team dependencies, ensure production readiness and incident response, and hire and mentor engineers to deliver scalable, reliable software.

Lead a small scrum team as hands-on technical authority, writing and reviewing full-stack C#/.NET, Angular, and Oracle code; run sprint ceremonies; drive AI-first tooling adoption; manage and develop 4–5 engineers; coordinate cross-functional delivery and client engagement.

Lead a small scrum team as the daily technical authority: write and review full-stack C#/.NET and Angular code, run scrum ceremonies, set priorities, unblock engineers, enforce quality standards, drive AI-first tooling adoption, manage 4–5 engineers, engage client stakeholders, and coordinate cross-team delivery and release readiness.

Technical lead for a scrum team building reporting/BI capabilities for the CEM platform. Hands-on work in SQL/Oracle and BI tooling, sprint leadership, query performance tuning, AI-first tooling adoption, people management for 4–5 engineers, client-facing requirements gathering, and cross-team collaboration to ensure high-quality, performant reporting solutions.

Principal IC responsible for reliability, observability, and modernization of a .NET-based Platform Services portfolio on Azure. Own architecture, resilience patterns, shared libraries, and migration of legacy .NET services. Implement observability, event-driven messaging, and AI-first engineering practices while mentoring engineers and partnering with architecture teams.

Own platform feature and API development, integrations, and deployments. Design, build, and maintain backend-focused full-stack features, collaborate with product and design, perform code reviews, troubleshoot, and work with cloud infrastructure and CI/CD pipelines to scale the marketplace.

Lead quality engineering within an Agile squad, design and maintain automated test suites across UI, API, microservices and DB, integrate tests into CI/CD, mentor SDETs, triage production issues, define test strategy, tooling and test environments, and enforce quality best practices.

Design, build, and maintain scalable backend services in C#/.NET powering payment routing, connector management, and platform configuration. Build secure, observable APIs and high-volume transaction processing systems, collaborate across Product/AI/Engineering, mentor junior engineers, drive architecture and standards, and own full lifecycle from requirements to deployment.

Build and ship full‑stack features for transportation management and other client products. Design and implement APIs and UIs, collaborate with product and design, own delivery, write modular testable code, troubleshoot and iterate quickly, and mentor peers.

Support customer and partner relationships by demonstrating radar value, lead integrations with C2/VMS/autonomous platforms, plan and execute installations, tune systems, provide technical support, analyze post-demo data, create training materials, collect feedback, and travel up to 50%.