Senior Software Engineer (C++)

Fintal Partners; Chicago (IL); On-site; USD 180,000 - 240,000; Full time

Job summary

Fintal Partners in Chicago seeks a Senior C++ Developer to join a high-performance engineering team building real-time trading tech powering global markets.

You will design, optimize, and maintain low-latency systems, work with traders and researchers, and push the limits of latency reduction. The role emphasizes reliability, profiling, and scalable software in a fast-paced financial environment.

Qualifications

• Proven experience building low-latency, high-performance systems.
• Deep understanding of performance optimization, memory management, multi-threading and concurrent programming.
• Experience profiling applications and optimizing CPU, cache utilization and network performance.
• Strong knowledge of Linux development environments and systems programming.

Responsibilities

• Design, develop and optimize high-performance C++ applications for low-latency trading environments.
• Reduce system latency through profiling, performance tuning and code optimization.
• Build scalable, resilient software used in electronic trading and market data processing.
• Work closely with traders, quantitative researchers and infrastructure engineers to deliver cutting-edge solutions.
• Identify bottlenecks across software and hardware, implementing improvements to maximize throughput and minimize latency.

Skills

C++ programming

Multithreading

Performance optimization

Linux systems programming

Profiling

Tools

RDMA

DPDK

Python

Job description

We are partnering with a leading proprietary trading firm seeking a talented Senior C++ Developer to join a high-performance engineering team building technology that powers real-time trading across global financial markets. This is an opportunity to work on mission-critical systems where performance, reliability, and latency are paramount.

Key Responsibilities

• Design, develop and optimize high-performance C++ applications for low-latency trading environments.


• Reduce system latency through profiling, performance tuning and code optimization.


• Build scalable, resilient software used in electronic trading and market data processing.


• Work closely with traders, quantitative researchers and infrastructure engineers to deliver cutting-edge solutions.


• Identify bottlenecks across software and hardware, implementing improvements to maximize throughput and minimize latency.

Requirements

• Proven experience building low-latency, high-performance systems.


• Deep understanding of performance optimization, memory management, multi-threading and concurrent programming.


• Experience profiling applications and optimizing CPU, cache utilization and network performance.


• Strong knowledge of Linux development environments and systems programming.


• Excellent problem-solving skills and a passion for writing highly efficient code.

Nice to Have

• Experience within proprietary trading, hedge funds or electronic market making.


• Knowledge of networking protocols (TCP/UDP), kernel bypass technologies, RDMA or DPDK.


• Familiarity with exchange connectivity, market data or order management systems.


• Exposure to Python for tooling or automation.

This is an excellent opportunity to work alongside some of the industry's strongest engineers, solving complex technical challenges where every microsecond counts.