Top C# Jobs

Lead architecture and implementation of high-performance C++ and Python systems, integrate distributed systems and hardware/software, manage CI/CD pipelines, debug and optimize real-time multi-threaded systems, guide end-to-end integration and verification, mentor engineers, and evaluate new technologies to improve system performance.

Develop and enhance performance-critical C++ applications for ultra-low latency trading systems, collaborating across teams to analyze and optimize performance.

Responsibilities include developing scalable server-side features, optimizing performance, and collaborating with teams to enhance online services for games.

Develop scalable server-side features, online services, and collaborate with teams. Requires C#, .NET expertise and experience in distributed systems.

Lead design, develop, test, and operate ultra-low-latency C++ trading connectivity and risk modules on Unix/Linux. Integrate FPGA pipelines with C++ for deterministic performance, automate remediation, establish latency/throughput/resiliency tests, and drive AI-assisted engineering adoption across the team.

Lead technical design and deliver secure, scalable C#/.NET software for trading systems. Drive architecture, coding, code review, automation, resiliency, CI/CD, and adoption of AI-assisted engineering practices while mentoring teams and engaging vendors.

Lead engineering role building and evolving the Sigma data-visualization platform: develop C++/Rust->WASM engine, integrate Apache Arrow, build TypeScript/React (Next.js) front-end, extend data adapters, tune WASM performance, ensure secure high-quality production code, drive architecture decisions, evaluate vendors, and lead engineering communities to improve operational stability.

Lead design and delivery of ultra-low-latency electronic trading systems (Smart Order Router, Matching Engine, Market Access, Risk Management). Develop and enhance trading strategies, ensure scalability and reliability, conduct code reviews and testing, and collaborate with cross-functional teams following Agile practices.

Design, build, and scale low-latency ad-serving systems and data/model-driven features. Optimize algorithms and architectures for performance and cloud cost, extend observability, participate in on-call rotations, and produce runbooks and documentation.

Design and optimize high-performance C++/CUDA libraries for GPU-based data processing. Improve multi-node GPU communication (UcxExchange), optimize Presto GPU query performance, and lead enhancements across Presto, Velox, and cuDF projects for efficient DataFrame and database acceleration.

Develop and optimize native C++ Android components for ground control stations, focusing on real-time telemetry, MAVLink communications, JNI boundaries, performance tuning, Qt/QML UI work, build systems, and field support to ensure reliable drone control across varied Android hardware.

Design, develop, troubleshoot, and debug software for databases, applications, tools, and networks using C++ and Java. Contribute to software architecture changes, work on mission-critical large-scale systems, and implement concurrent and parallel distributed algorithms in cloud environments while providing strong troubleshooting for distributed systems.

Seeking Emerging Modern C++ Developers to create maintainable code for math and physics challenges. Ideal for recent graduates with relevant skills in C++ and additional programming languages.

Design and implement complex low latency, high throughput software for financial data distribution, conduct testing, and improve software reliability.

Develop and maintain the Java client library and high-performance C/C++ server applications. Implement message parsers and feed handlers, optimize for extreme throughput and low latency, build tools for petabyte-scale processing, collaborate on build/deploy/CI practices, monitor uptime, and support smooth feature rollouts.

Implement and maintain the C# client library and high-performance C++ server applications. Build message parsers and feed handlers, optimize for millions of messages/second and nanosecond latency, develop petabyte-scale data tools, collaborate on build/deploy/CI/CD, monitoring, and ensure reliable feature rollouts.

Design and implement large-scale distributed systems for a supercomputing cluster, optimize low-level performance across GPUs, kernel, networking, and filesystems, collaborate on hardware-software co-design, maintain scalable reliable codebase, and build productivity tools.

Design and implement high-performance 2D/3D GIS visualization software and real-time rendering features. Research and apply advanced graphics algorithms, diagnose and fix bugs and performance issues, handle large data visualization and I/O caching, and collaborate with cross-functional teams to deliver quality software in an agile environment.

Build, integrate, and stress-test full-stack applications and backend services that leverage advanced AI models. Develop production APIs, front-end features, databases, and cloud infrastructure; troubleshoot integrations; prototype rapidly and deliver high-quality code and documentation in fast-moving environments.

Develop and integrate C/C++ software for Naval projects (including SLBM systems) using Agile practices. Work on software development, analysis, problem solving, and team collaboration to meet schedule-driven goals. Support senior developers, interact with customers and engineers, and comply with security and site access requirements.

The Back End Software Engineer will design and build scalable services for a SaaS platform, collaborate with teams, and contribute to quality code and architecture discussions.

Senior C#/.NET developer role to design and implement enterprise-level, scalable microservices using AWS. Work with MS SQL/PostgreSQL and React.js, mentor developers, overlap multiple time zones, and grow into technical leadership in a fully remote environment.

The Senior Software Engineer will design, develop, and maintain software applications, lead coding efforts, mentor junior staff, and collaborate with cross-functional teams to align solutions with business goals.

The Senior C# Developer will lead AI enablement by transforming APIs into an Agent Mesh using C# and the MCP, ensuring secure AI interactions through Gravitee management.

Develop, evaluate, and test safety-critical Orion GN&C flight software. Use MATLAB/Simulink/Stateflow/Autocode, Python, and C/C++ for analysis, simulation, integration, and build management. Improve software processes, perform deep-dive flight and simulation analyses, and collaborate with NASA and contractor teams.