Location: Warsaw, Poland

Senior Java Developer Trading Systems
Company: Cantor Fitzgerald
Team: Trading Systems Development
Location: Poland (Warsaw)
Employment type: Full-time, permanent

Responsibilities

• Design, develop, and maintain server-side Java applications for trading platforms.
• Implement robust, scalable solutions using Spring Framework and Spring Boot.
• Collaborate with business analysts, tech leads, traders, and other developers to deliver mission-critical features.
• Optimize application performance for high throughput and low latency in a real-time trading environment.
• Ensure code quality through unit tests and end-to-end test automation.
• Participate in DevOps pipeline development and deployment automation using Git/GitLab, Maven, and Jenkins CI/CD pipelines.
• Troubleshoot production issues and provide timely resolutions.

Qualifications

• Strong proficiency in Java (8+) with a focus on server-side development.
• Expertise in Spring, Spring Boot, and Maven for enterprise application development.
• Experience with at least one web application development framework (e.g., Angular, React, or similar).
• Solid understanding of multithreading, concurrency, and application performance tuning.
• Experience with DevOps practices and CI/CD pipelines.
• Familiarity with message queue systems (e.g., Kafka, JMS) and RESTful services.
• Knowledge of SQL and relational databases (Oracle, PostgreSQL).
   

Preferred Qualifications

• Monitoring and observability tools: Splunk, ELK stack, Grafana/Prometheus.

Join Cantor Fitzgeralds Trading Systems development team as a Senior Java Developer. You will build and evolve server-side modules of our high-frequency trading platform and matching engine, working with Java, Spring Boot, Kafka and PostgreSQL in a low-latency, real-time environment. You will help shape a new system from the ground up, collaborating closely with tech leads, traders and business analysts. A high-impact role with real ownership of mission-critical components.