Senior Java Developer

Cantor Fitzgerald Ireland Ltd; Województwo mazowieckie; On-site; PLN 180,000 - 280,000; Full time

Benefits offered by this job

Restaurant level perks

Job summary

Cantor Fitzgerald Ireland Ltd is seeking a Senior Java Developer to join the Trading Systems team. You will design, build, and maintain server-side Java components for a high-frequency trading platform, leveraging Spring and Spring Boot to deliver scalable, low-latency solutions.

Collaborate with traders and engineers to deploy robust features, drive performance improvements, and ensure code quality with automated tests and reliable DevOps practices.

Qualifications

• 5+ years of professional Java development experience.
• Bachelor’s degree in Computer Science, Engineering, or related field.
• Experience with electronic trading systems is a strong plus.
• Familiarity with monitoring/observability tools like Splunk, ELK, Grafana/Prometheus.

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.

Skills

Java server-side

Spring Framework

Spring Boot

Maven

Web frameworks (Angular/React)

Multithreading & concurrency

CI/CD pipelines

RESTful services

SQL/Relational databases

Education

Bachelor’s degree

Tools

Kafka

JMS

GitLab

Jenkins

Oracle

PostgreSQL

ELK Stack

Grafana/Prometheus

Job description

Cantor Fitzgerald is seeking a highly skilled Senior Java Developer to join the Trading Systems development team. The role involves developing modules of a 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 and CI/CD pipelines.
• Familiarity with message 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 a 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.
• Monitoring and observability tools: Splunk, ELK stack, Grafana/Prometheus.