Top C# Jobs in NYC, NY

Develop low latency algorithmic trading strategies, enhancing systems for market data and order execution while collaborating with investment professionals.

The role involves enhancing market access systems for low-latency crypto trading, collaborating with traders and systems engineers, and optimizing performance.

Design, build, and maintain backend workflow orchestration and analyzer integrations for the ECL platform. Manage analyzer state transitions, runtime event handling, and legacy modernization; extract shared .NET libraries, collaborate with integration and QA, and support knowledge transfer.

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.

Develop and maintain .NET Core trading systems for Linux with service-oriented architecture and multi-threaded processing. Implement async, lock-free structures and distributed systems, write unit and integration tests, optimize SQL queries, design data structures and algorithms, and work with communication protocols (SignalR, gRPC, HTTP). Use PostgreSQL, Docker, and AWS in the deployment stack.

Contribute to and optimize the performance of ClickHouse, assist with debugging, collaborate with teams, and engage with the open-source community.

The C++ Developer will implement, test and deploy features for a high-frequency trading system, optimize performance, and debug issues.

The engineer will develop low latency trading systems, optimize performance, and improve frameworks. Collaboration with traders and researchers is key.

Develop and optimize ultra-low-latency, high-performance trading infrastructure in modern C++. Implement and tune order execution, market data connectivity, multi-threaded systems, and risk modules. Profile and benchmark real-time systems, collaborate with quants and traders, and maintain robust, fault-tolerant continuous trading operations.

The C++ Developer will design, develop, and maintain applications, particularly in C++ on Unix, and perform process analysis and improvement.

The Senior Software Developer will design high performing, scalable server systems, develop APIs, and enhance web security while working on challenging projects.

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.

The role involves developing C++ applications for Credit Risk systems, implementing pricing models, and supporting strategic initiatives in the finance sector.

As a C++ Software Engineer, you'll develop market data infrastructure, enhance trading systems' performance, and collaborate with researchers to improve trading strategies.

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.

Develop and optimize automated trading infrastructure, collaborate with Traders and Quants on trading algorithms, create scalable multi-tiered applications.

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.

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

Design, implement, and optimize scalable backend software solutions. Collaborate with team members and uphold coding standards while troubleshooting and maintaining software performance.

Design, build and maintain low-latency C++ integrations with market data providers and exchange feeds. Optimize performance, scalability, and resiliency; deploy and support central data feeds; own modules, fix bugs, assist production and audits, and collaborate with client-facing teams.

Develop, implement, and support low-latency trading algorithms and analytics (multi-leg spreads, baskets, market making, VWAP). Collaborate with clients and SMEs to design scalable, customizable strategies; integrate into FlexStrategy Server; enhance back-testing framework; perform developer testing, QA coordination, documentation, and client support for deployments and troubleshooting.

The role involves developing and maintaining trading user interfaces, enhancing performance of C# components, and adapting to project changes while collaborating with teams.

Develop a quest gameplay engine for game server and mobile apps and build a visual no-code quest editor. Collaborate in one-week Scrum sprints, design software architecture, and use C++/Qt, JavaScript/TypeScript, git, and Linux.

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