C# UI Developer for Real-Time, Low-Latency Trading Tools

MA CAPITAL U.S. LLC; Polska; On-site; PLN 120,000 - 180,000; Full time

Job summary

MA Capital U.S. LLC is seeking a C# UI Developer to design high-performance, real-time trading interfaces. You will partner with traders and engineers to build low-latency desktop tools for monitoring positions, executing trades, and analyzing streaming data.

You should be proficient in C#, WPF, and real-time data visualization, with experience integrating live feeds via WebSocket or gRPC. The role offers a startup-like environment with agile processes and opportunities to advance your career.

Qualifications

• Strong experience in C# desktop application development with a focus on real-time data visualization.
• Proficiency in handling streaming data via WebSocket, gRPC, or custom TCP/UDP protocols.
• UX for time-sensitive, data-heavy trading environments with efficient layouts and clear visuals.
• Experience with statistics, modelling, or machine learning for trading systems is a plus.
• Knowledge of Python-based visualization is a plus.
• Startup/entrepreneurial environment with agile practices and rapid decision-making.
• Efficient infrastructure for ultra-low-latency, high-performance trading.

Responsibilities

• Design and implement responsive, high-performance trading interfaces in C# and WPF.
• Integrate live market data, position monitoring, and trading controls into desktop apps.
• Collaborate with backend engineers and traders to deliver data-rich, low-latency tools.

Skills

C# desktop

WPF

Real-time data

Streaming data

UX for trading

Data visualization

Tools

WebSocket

gRPC

TCP/UDP

Job description

MA Capital U.S. LLC is seeking a C# UI Developer to design high-performance, real-time trading interfaces. You will partner with traders and engineers to build low-latency desktop tools for monitoring positions, executing trades, and analyzing streaming data.

You should be proficient in C#, WPF, and real-time data visualization, with experience integrating live feeds via WebSocket or gRPC. The role offers a startup-like environment with agile processes and opportunities to advance your career.