Top Remote C# Jobs in Washington, DC

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.

Analyze, transform, and migrate JCL-based mainframe batch workloads to Azure or distributed platforms. Troubleshoot JCL jobs, analyze Control-M/Atomic schedules and CICS environments, convert JCL to PowerShell, automate and optimize batch jobs in Azure, document requirements, and collaborate across cross-functional teams using Agile practices.

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.

Remote MES Consultant to lead Siemens Opcenter/Camstar implementations for discrete manufacturing. Responsibilities include requirements elicitation, functional design, project task definition and reporting, troubleshooting, release management across DEV/QA/PROD, testing/validation, end-user training, integration with ERP and automation systems, and identifying security/performance risks.

Design, build, and maintain full-stack browser-based ChartCheck web application using JavaScript/TypeScript. Collaborate with cross-functional teams, implement RESTful APIs, work with MongoDB/SQL databases, conduct code reviews, mentor teammates, and ensure secure, compliant healthcare software practices.

Senior .NET Web App Developer responsible for designing and building .NET web applications, implementing Oracle PL/SQL solutions, using Entity Framework and Blazor, applying design principles, producing technical documentation, performing performance tuning, and collaborating in Scrum/Agile teams with Bitbucket, JIRA, Tempo, and Confluence.

Design, build, and maintain UI, API, and regression test automation; integrate tests into CI/CD; collaborate with developers and DevSecOps; perform defect triage and support audit readiness for federal IT modernization programs.

Lead design, development, testing, and delivery of backend-focused .NET Core systems. Mentor engineers, drive Agile ceremonies, own end-to-end projects, improve performance and reliability, provide 3rd-level support, and collaborate with stakeholders to implement APIs, databases, cloud, and containerized solutions.

Design and build scalable full-stack applications, develop front-end and back-end features, implement REST APIs, work with SQL/NoSQL databases and CI/CD pipelines, follow testing and Git workflows, and collaborate with cross-functional teams.

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.

The Senior Software Quality Engineer will architect the automated QA framework for WISEcode's platform, focusing on quality engineering practices, automated testing for ASP.NET and Blazor applications, CI/CD integration, and collaboration with engineering teams to ensure robust quality standards are met.

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 architecture and deliver scalable, secure Azure solutions across the enterprise. Design IaC modules (Terraform), landing zones, CI/CD pipelines (Azure DevOps/GitHub Actions), governance (Policy as Code, RBAC), observability (Azure Monitor, Log Analytics, Application Insights), cost/performance optimization, container infrastructure, and incident response. Mentor engineers, run design/code reviews, and collaborate with stakeholders to translate business needs into production-ready cloud platforms.

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.