Java - Trading Systems Software Engineer

CPS Inc.; Chicago (IL); On-site; USD 120,000 - 160,000; Full time

Job summary

CPS Inc. is hiring a Java Trading Systems Developer in Chicago to build and enhance high-performance trading applications for front-office trading and execution.

You will work closely with traders, quantitative researchers, and engineers to deliver reliable, scalable real-time systems used across financial markets. The role emphasizes concurrent Java programming, low-latency design, and integration with exchanges and market-data feeds.

Qualifications

• Strong Java development skills
• Deep understanding of multithreading, concurrency, data structures, and JVM
• Experience with distributed, real-time, or high-throughput systems
• Strong Linux development and troubleshooting skills
• Familiarity with messaging, networking, TCP/UDP; FIX knowledge is a plus
• Experience with equities, futures, options, fixed income, FX or similar markets
• Previous experience in proprietary trading, hedge funds, investment banking, exchanges, or fintech is highly desirable

Responsibilities

• Design and develop high-performance trading systems and services using Java
• Build real-time, event-driven applications for order management, execution, and market data
• Develop concurrent and scalable systems with focus on performance and reliability
• Integrate with exchanges, brokers, market-data providers, and trading venues
• Analyze latency, throughput, memory usage, and overall system performance
• Collaborate with traders and quantitative teams to deliver production solutions
• Troubleshoot production issues across trading apps and infrastructure
• Participate in system design, code reviews, testing, deployment, and ongoing improvements

Skills

Java development

Multithreading

Linux

Performance

Distributed systems

Networking

Job description

Java Trading Systems Developer We are seeking a Java Trading Systems Developer to build and enhance high-performance trading applications supporting front-office trading and execution. This role will work closely with traders, quantitative researchers, and other engineers to develop reliable, scalable systems used in real-time financial markets.

Responsibilities

• Design and develop high-performance trading systems and services using Java.
• Build real-time, event-driven applications for order management, execution, market data, and trading workflows.
• Develop highly concurrent and multithreaded systems with a focus on performance, reliability, and scalability.
• Integrate with exchanges, brokers, market-data providers, and other electronic trading venues.
• Analyze and improve application latency, throughput, memory usage, and overall system performance.
• Work directly with traders and quantitative teams to understand requirements and deliver production solutions.
• Troubleshoot complex production issues across trading applications and infrastructure.
• Participate in system design, code reviews, testing, deployment, and ongoing platform improvements.

Qualifications

• Strong professional Java development experience.
• Solid understanding of multithreading, concurrency, data structures, algorithms, and JVM performance.
• Experience developing distributed, real-time, or high-throughput systems.
• Strong Linux development and troubleshooting skills.
• Experience with messaging technologies, networking, and TCP/UDP is preferred.
• Knowledge of FIX or other financial-market protocols is a plus.
• Experience with equities, futures, options, fixed income, FX, or other electronically traded products is preferred.
• Previous experience in proprietary trading, hedge funds, investment banking, exchanges, or financial technology is highly desirable.
• Strong problem-solving skills and ability to work in a fast-paced, collaborative environment.

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