Senior Java Developer - Hybrid

Company Overview Cantor Fitzgerald is a leading global financial services firm specializing in investment banking, capital markets, institutional equity and fixed income sales and trading, commercial real estate, and prime brokerage. With a legacy of over 75 years of financial innovation and integrity, Cantor operates across major financial centres worldwide, delivering excellence and trusted expertise to its clients. This role is part of a rapidly growing technology hub in Warsaw, which will be instrumental in supporting the company’s global technology expansion and driving innovation across its international operations.

Cantor Fitzgerald is seeking a highly skilled C++ Developer to join the Trading Systems development team. The role involves developing modules of high frequency trading platform and matching engine .

Key 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.

Core Competencies & Skills:

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 , CI/CD pipelines . Familiarity with messag e queue systems (e.g., Kafka, JMS) and RESTful services . Knowledge of SQL and relational databases (Oracle, PostgreSQL).

Qualifications:

Bachelor’s degree in Computer Science , Engineering, or related field. 5+ years of professional experience in Java development. Prior experience in electronic trading systems , brokerage platforms , or financial services technology is a strong plus.

Desirable Skills:

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

Personal Attributes Proactive and solution-oriented Comfortable working in a dynamic, business-facing environment Strong team player with a practical mindset Open to learning new technologies and approaches

Work Arrangement This is a hybrid role based in Warsaw, with three days per week in the office. The role is offered primarily as a permanent contract (Umowa o Pracę – UoP). Salary range: 20,000 PLN – 40,000 PLN (depending on experience and contract type).

Why Join Us? Work closely with front-office teams on business-critical systems Opportunity to build on strong Excel expertise while learning modern technologies Exposure to real-time pricing systems and global markets Join a collaborative, experienced team within a global organisation

Daily tasks

• 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.

Requirements

Skills & Experience Required Strong experience working with Excel, ideally in the context of pricing or analytics  Background in pricing models or quantitative analytics (any asset class)  Exposure to real-time or event-driven environments  Ability to work with business users and translate requirements into solutions  Solid analytical and problem-solving skills  Good communication skills and collaborative mindset  Desirable Skills & Experience Some exposure to C++, Python, or Java  Experience working with trading desks or in financial services  Knowledge of asset classes (e.g. FX, rates, commodities)  Interest in moving from Excel-based development into modern platforms

Must have: C++, Java, Communication skills, Spring, Spring Boot, Spring Framework, SQL, Multithreading, Maven, CI/CD

Nice to have: electronic trading systems, brokerage platforms, financial services technology