Top C# Jobs in NYC, NY

Design, implement, and maintain high-performance, concurrent C++ systems for Aladdin's security analytics and compliance platform. Contribute to batch-processing engines, shared analytical libraries, and portfolio services; apply test-driven development, perform code reviews and profiling, support DevOps/CI pipelines, and collaborate with global teams and product managers to deliver resilient production software.

The role involves designing and implementing high-performance APIs for a mortgage analytics quantitative library, enhancing system performance, and collaborating with various teams.

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

Develop client-side solutions and APIs for Spectacles, maintaining AR software in a constrained environment and collaborating with cross-functional teams.

The Software Engineer will improve performance of C# software components, evaluate new technologies, and communicate effectively across teams.

The C++ Quant Developer will work on fixed income electronic trading systems, focusing on software performance, automated quoting, execution, and risk management.

As a Senior Engineer on the Market Data team, you will design high-performance libraries for trading systems, ensuring fast and reliable market data delivery while collaborating with various teams.

Design, build, and operate scalable .NET/C# applications and integrations for Private Wealth. Own end-to-end delivery, write well-tested code, optimize data and queries, troubleshoot production issues, mentor junior developers, and drive platform modernization and CI/CD improvements.

The Senior Software Engineer will design and develop applications for commodity trading systems, mentor juniors, and collaborate in an agile environment.

Lead the redesign of an Order Management System, driving strategy, architecture, and delivery with a focus on performance and stakeholder management.

Develop and support low-latency C/C++ trading systems, conduct testing and code reviews, and enhance platform performance within a collaborative team.

Develop and maintain systems for systematic investing, focusing on data pipelines, trading tools, and technical monitoring within a collaborative team.

Architect, design, build, test, and deploy highly available real-time systems. Participate across the SDLC, implement automated testing and CI/CD, maintain documentation, troubleshoot and enhance existing software, and collaborate in an Agile/Scrum team environment.

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

The Senior Software Engineer will develop and maintain client-side applications, improve installation workflows, and ensure enterprise deployment support for cybersecurity products.

Design and build performance-critical components in C++. Require expertise in multithreaded systems, CI/CD pipelines, and GTK integration, as well as Python scripting.

As a Senior Software Engineer, you will design and develop key components of Stellar Core, enhance blockchain technology, and collaborate with engineering teams.

As a C++ Trading & Simulator Engineer, you will design, develop, and optimize trading systems and analytics platforms while collaborating closely with quantitative researchers. Your focus will be on high-performance systems for algorithmic trading and improving the infrastructure for research and trading.

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.

The role involves developing and enhancing trade and position management infrastructure, building interfaces, and participating in trade processing.

The role involves developing server-side C# applications for trading systems, particularly focusing on risk management and derivatives market data.

Develop and maintain the C# SDK for Supabase, ensuring a seamless experience for .NET developers, while engaging with the community and collaborating across teams.

The role involves building and enhancing a React application, maintaining backend services in .NET/C#, and ensuring platform stability in a high-visibility trading technology team.

Seeking a Senior Software Developer for developing high-performance distributed systems for media workflows, including video transcoding and content delivery.

The Senior Software Engineer will design core components of the XRP Ledger, integrate a WASM VM, and lead software development from design to testing in C++ and Rust.