Top Remote C# Jobs in Washington, DC

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, architect, and implement cloud-first full-stack software using Java/C# and JavaScript frameworks. Provide technical leadership, mentor engineers, improve architecture and performance, promote CI and automated testing, and support customer implementation and cloud platform operations.

Design, implement, and maintain custom test frameworks for Illumina's primary analysis software. Create and expand automated tests, troubleshoot CI/CD pipelines, investigate failures, collaborate with developers to diagnose root causes, and ensure tests are reproducible, documented, and maintainable as analysis capabilities evolve.

Build, architect, and own moderate-to-complex backend components; lead small teams or projects; provide technical guidance and code reviews; deliver end-to-end backend services focused on AI-enabled customer data insights, onboarding, messaging/calling features, and scalable data management for a growing user base.

Lead and grow a multidisciplinary engineering team across full-stack, data engineering, and BI. Own people management, technical direction (C#/.NET, SQL, Vue 3, Power BI), data pipeline reliability, roadmap delivery, cross-functional collaboration, and engineering best practices to improve velocity, quality, and health outcomes.

Lead design, develop, and maintain Opcenter/Camstar MES solutions. Translate stakeholder requirements into technical designs, implement C#/.NET and web UI components, integrate APIs, perform code reviews, troubleshoot, and mentor an offshore development team through the SDLC.

The Senior Software Engineer designs and develops complex features within OneStream solutions, ensuring technical excellence and mentoring other engineers. Responsibilities include architectural design, UI development, API creation, performance improvements, and collaboration across teams.

Develop, design, and maintain OneStream solution accelerators using Microsoft .NET. Lead design discussions, produce documentation and unit tests, collaborate with product and engineering, and enable partner adoption through toolkits and best-practice guidance.

Ensure platform reliability, performance, and availability by implementing observability, automating infrastructure, participating in on-call rotations and post-mortems, partnering with Product and Engineering, designing scalable architectures, mentoring teammates, and integrating Dynatrace with Azure DevOps and Jira while supporting compliance (SOC/FedRAMP).

The DevOps Engineer III enhances software infrastructure for unmanned aircraft systems, focusing on backend integrations, frontend development, CI/CD pipelines, and system monitoring, collaborating with engineering teams.

Lead architecture and implementation of software for autonomous UAS systems; mentor engineers; ensure compliance with aerospace standards; optimize CI/CD pipelines.

Develop high-reliability software for safety-critical applications in UAS technology. Collaborate with teams, maintain solutions, and automate processes.

The role involves designing authentication and authorization solutions, integrating applications with identity platforms, and maintaining security practices within identity services. A focus on collaboration with Security and Product teams is important.

The Technical Engineering Manager leads cross-functional teams to ensure high-quality software delivery, drives technical innovation, mentors engineers, and manages operational efficiency within the banking software sector.

The Principal Engineer will architect and develop scalable AI-driven data platforms, mentoring engineers and aligning technical strategies with business goals.

The Enterprise Architect will define and implement a cloud-ready architecture integrating 22+ products, ensuring data interoperability, and leading modernization efforts across teams.

Seeking a Software Engineer with 3+ years experience in software development, programming (Go, Java, C++, C#), and strong analytical skills.

Seeking a Staff Software Engineer to design and build cloud-deployed systems. Must have extensive programming and leadership experience in software engineering.

Seeking a Senior Software Engineer with 5+ years of experience to design and develop large-scale distributed systems, mentor junior engineers, and manage complex projects in a dynamic setting.

The Technical Solutions Engineer at Elation enhances customer experience by technical mentoring, integration support, and leveraging AI for efficiency in healthcare services.

The Senior Software Engineer will lead teams to build secure, high-scale cloud applications, ensuring system reliability and delivering software solutions.

Partner with clients to design, develop, modernize, and support production full-stack applications using .NET/C#. Lead feature delivery from discovery through deployment, contribute to architecture and DevOps practices, improve engineering quality (TDD, CI/CD, IaC), and mentor client teams to leave them better equipped to maintain and evolve software.

Lead a cross-functional agile engineering team while remaining hands-on in architecture and coding. Mentor engineers, coordinate with Product and QA, improve delivery practices, CI/CD, operational reliability, and cloud-based systems, and drive modernization and engineering standards.

Join Hone as a Quality Engineer II to own testing and automation for small features and bugs. Write and maintain test cases and reliable Playwright and API tests, chase flaky tests, run exploratory checks, produce clear bug reports, use AI-assisted tooling responsibly, and follow patient-data guardrails.

Lead design and implement large-scale backend storage features for Backblaze's object storage platform, focusing on host-managed SMR support, IO benchmarking and performance optimization, driving technical decisions, mentoring, and delivering production rollouts across thousands of servers.