Top Remote C# Jobs in Washington, DC

Design, build, test, and maintain enterprise applications and integrations for VA healthcare modernization. Work in Agile teams to develop APIs, microservices, CI/CD pipelines, and DevSecOps practices, support legacy VistA/MUMPS systems, troubleshoot performance and integration issues, and ensure federal cybersecurity and compliance.

The Full Stack Developer will design, build, and support web applications for credit and structured products, integrating third-party systems and migrating legacy applications to modern architectures, while ensuring data quality and performing reporting tasks.

Design, build, and evolve scalable backend systems for WWE Champions. Support live-ops, incident management, reliability improvements, and pre/post-release backend support. Collaborate with client (Unity) engineers, drive technical roadmap, mentor cross-functional teams, and optimize performance and content pipelines for live mobile games.

Senior Quality Engineer responsible for designing and maintaining scalable automated test frameworks, executing functional/regression/performance tests, analyzing results, documenting QA activities for compliance, collaborating with cross-functional teams, and mentoring junior engineers to improve automation quality.

Senior Microsoft Dynamics and Power Platform Developer responsible for designing, building, and deploying Dynamics 365 case management solutions. Work with clients and internal teams through discovery, design, build, test, and deployment phases; develop integrations and customizations; create wireframes/prototypes; support data migration; improve development and release processes; and travel to client sites for demos and meetings.

Lead the migration from legacy Azure services to a Kubernetes-based, containerized microservices platform. Design, build, and scale infrastructure, implement observability (monitoring/alerting/logging), drive incident response and SLOs, automate with IaC and CI/CD, optimize cost and networking, mentor teams, and document systems to ensure reliable, scalable healthcare platform operations.

Lead a software development team to design, build, test, and deliver product features. Provide hands-on technical leadership, oversee architecture, code quality, releases, and production support. Mentor direct reports, collaborate with product and support teams, and evaluate new technologies and prototypes to improve delivery and product capability.

Design, build, and maintain scalable web applications for payroll and accounting. Collaborate with engineers and product partners, write tested code, participate in code reviews, contribute to architecture, improve CI/CD and monitoring, support production (including on-call), and communicate progress while continuously learning.

Debug and resolve complex hardware/software issues for manufacturing test stations. Lead commissioning and release-to-manufacturing of opto-electrical test stations, improve test uptime, provide documentation and support to contract manufacturers and vendors, coordinate equipment RFQs/RMAs, and use AI tools for data analysis.

Lead design and delivery of complex backend features for a high-scale online banking platform. Own code from design to production, modernize legacy systems, develop microservices, design APIs, implement tests, ensure secure coding, use AI-assisted tools, troubleshoot issues, and document APIs while collaborating with product, QA, and front-end teams.

Design, build, and implement Dynamics 365 solutions in a cloud/microservice environment. Develop C#/.NET plugins, APIs, and Azure Functions; participate in requirements analysis, code reviews, testing, deployment, and SDLC documentation. Collaborate with Agile teams, interface with clients, mentor junior developers, and support VA federal projects.

Design, build, and maintain Microsoft Dynamics 365 solutions for federal clients. Participate in requirements analysis and agile development; implement entities, forms, workflows, ribbons/themes, managed/unmanaged solutions, roles/permissions; use XRMToolBox and FetchXML; produce SDLC documentation and collaborate on design and architecture.

Own and evolve core trading platform services: design and build cloud-native .NET microservices, APIs, and high-availability distributed systems. Drive architecture, reliability, monitoring, incident response, and mentor engineers while occasionally contributing to React/TypeScript frontend work.

Lead design, architecture, and delivery of enterprise web, mobile, backend and cloud solutions. Provide technical and people leadership across Agile teams, enforce engineering best practices (CI/CD, DevSecOps, observability), mentor engineers, manage delivery risks, and drive platform modernization and production readiness.

Design, develop, test, and deploy scalable enterprise web applications and APIs using .NET technologies. Build front-end features with Angular/React, optimize performance and security, run CI/CD pipelines, work with cloud-native and containerized deployments, participate in architecture and code reviews, mentor junior developers, and collaborate in Agile teams to troubleshoot production issues.

Lead architecture and delivery of highly available, resilient cloud and on‑prem systems for the Password Safe platform. Own platform engineering, CI/CD pipelines, IaC/GitOps, release orchestration, observability (metrics/logs/traces), chaos engineering, SLO/SLI definition, and core services. Mentor engineers, define SRE strategy, and drive reliability, security, and automation improvements.

Lead backend technical strategy and hands-on implementation to migrate on-prem systems to Azure, decompose a .NET monolith into service-based architecture, define data models and API contracts, ship customer-facing features with CI/CD and observability, and mentor engineers across the cross-functional Platform team.

Lead architectural strategy and modernization for large-scale distributed systems. Design modular, extensible services, migrate legacy monoliths to microservices, optimize AWS infrastructure and costs, document and visualize systems, facilitate cross-functional design, mentor engineering teams, and scout emerging technologies.

Lead design, build, and scale GridUnity's cloud SaaS platform. Own end-to-end features, mentor engineers, drive architecture, improve scalability, reliability, security, and data practices while collaborating with product teams.

Develop and enhance GIS capabilities within a core C++ OMS application, configure map services, design cartography, integrate spatial databases, resolve spatial data issues, and collaborate with product teams using Jira and GitHub.

Design, develop, and maintain complex, enterprise-scale software features and services across the OneStream CPM platform. Lead technical design, implement UI and APIs, ensure JSON/XML contract compatibility, improve performance and reliability, mentor engineers, participate in code reviews, and support CI/CD, testing, and production operations. Use AI-assisted development tools responsibly to accelerate development.

Design, manage, and implement Appian-based applications for financial services and insurance clients. Capture requirements with Tech Leads, translate business needs into solutions, deliver custom Appian implementations, collaborate with architects and delivery teams, and develop reusable assets, accelerators, and best practices.

Lead full‑stack modernization of a legacy .NET/SQL Server payment-integrity platform. Build modular Angular frontends and resilient .NET microservices, improve APIs, optimize database performance, embed security/privacy, use AI coding agents to accelerate refactors, and drive delivery with strong observability and testing practices.

Hands-on SRE supporting reliability, automation, observability, and incident response. Implement SLIs/SLOs, Infrastructure as Code, telemetry, dashboards, automation, participate in on-call and postmortems, and build AI-powered operational solutions while learning cloud and Kubernetes best practices.

Lead engineering teams to deliver a cloud-native SaaS platform and ship production AI agents for MEP fabrication workflows. Own delivery, architecture (Azure/MongoDB Atlas), CI/CD, observability, and cross-functional execution. Maintain customer empathy via shop-floor engagement, partner with Product/CTO, and build an AI-forward engineering culture and high-performing teams.