Top Remote C# Jobs

Design, develop, and field high-performance Ground Control Station and C2 software using C++/Qt/QML and QGroundControl. Lead architecture and technical direction, mentor engineers, define APIs/ICDs, debug integration/latency issues, support field tests, implement post-mission debrief tools, and ensure interoperability with C2 standards.

As a Backend Engineer, you'll improve Git and Gitaly by contributing features, bug fixes, and performance improvements, collaborating with the open source community, and participating in architectural discussions.

Software Engineers at Citadel develop, maintain, and support high-performance trading platforms, focusing on custom software solutions and system stability.

Lead development of core client systems and engine-level infrastructure in Unity/C#. Diagnose and fix cross-cutting performance issues, upgrade third-party SDKs, evolve build tooling, produce design docs, scope multi-week infrastructure initiatives, mentor engineers, and drive profiling, optimization, and architecture changes to enable future features.

Design high-performance C++ libraries for automated PCB design challenges, mentoring peers and shaping technical direction while collaborating with experts in various fields.

Senior backend developer to design and implement a SaaS workflow automation platform on the Microsoft stack. Responsibilities include software architecture, backend development, code reviews, mentoring junior developers, technical guidance, and supporting a remote team across timezones.

Mid- to senior-level full-stack engineer who collaborates with business and technical teams to translate requirements into scalable web applications. Develop and maintain applications using Angular, C#, SQL, and JavaScript, apply Lean UX for improved user experiences, perform data analysis, and support agile continuous-improvement initiatives.

Design and evaluate performance engineering tasks for AI training/evaluation. Optimize runtime, compilers, memory, CPU/GPU and concurrency. Produce documented solutions, evaluate AI-generated code, and build evaluation frameworks and scoring rubrics while collaborating with researchers and SMEs.

Build and optimize high-performance C/C++ and Rust server applications and feed handlers for market data. Implement parsers, petabyte-scale processing tools, and low-latency, high-throughput optimizations. Collaborate on build/deploy/CI, monitoring, and ensure reliable feature rollouts.

The C# / .NET Developer will design and maintain middleware applications, build Shopify integrations, and support a mobile app backend in a remote work environment.

Own and build features in a custom Flutter engine and Dart runtime fork using C++. Design, implement, ship, and support systems-level features (asset support, hot restart, crash reporting, profiling) while maintaining build infra and coordinating rebases and native tooling. Work remotely on a small team with high ownership and customer impact.

Develop and deliver new features for a SaaS document management platform. Build React single-page frontends, design and consume REST APIs, implement C# .NET backend services, participate in SDLC and two-week sprints, collaborate with product, QA, and designers, and contribute to cloud and mobile work when applicable.

Lead design and delivery of Opcenter MES customizations, architect Teamcenter↔Opcenter integrations, mentor offshore developers, own CI/CD for MES artifacts, and ensure upgrade‑safe, event‑driven synchronization of PLM changes into shop‑floor work orders.

Build and maintain scalable, cloud-native APIs using .NET. Enhance core platform components, lead architecture and testing discussions, optimize telemetry and performance, collaborate cross-functionally, conduct code reviews, and mentor team members.

Seeking a Senior Software Engineer to design and implement multimedia data systems using C# and .NET Core. Responsibilities involve developing high-performance applications, collaborating with teams, and driving engineering excellence in an Agile environment.

You will develop and maintain components of the LLVM based toolchain, collaborating with the community while ensuring platform-specific optimizations and tests.

As a Software Engineer, you will develop and maintain the Tally software stack, enhance robot navigation and autonomy, and support CI/CD processes.

Develop user interface components for ArcGIS Pro using C# and WPF, work in an agile team, and design software solutions for raster and imagery processing.

PrivateID seeks a Principal C++ Engineer with at least 10 years of experience to lead complex systems and scale their platform in a remote-first environment.

As a Displays Software Engineer, you'll design and build real-time user interface applications for automated aircraft systems, ensuring safety and usability across platforms.

As a Senior Full-Stack C#/.NET Engineer, you will fork and set up existing applications, implement architectural adjustments, and ensure deployment in Azure. The role requires close collaboration with stakeholders and troubleshooting legacy code.

Develop software and enhance systems in C++ on Linux, while collaborating with analysts and engineers to create data processing tools.

Provide advanced customer-facing technical support for enterprise VDI solutions: diagnose and reproduce complex issues, perform root-cause analysis, collaborate with engineering/product/QA, document findings, drive product and supportability improvements, and participate in on-call rotations.

Lead re-architecture and modernization of a legacy C++ execution kernel, improve performance, memory and concurrency behavior, diagnose production issues, and provide technical leadership across design, code review, and cross-functional collaboration.

Remote backend C# developer to build and optimize a high-load spot-exchange matching engine. Improve performance and API throughput, implement business features, write unit and integration tests, work with .NET Core and PostgreSQL on AWS, and apply multithreading, async, and distributed systems concepts.