Senior Java Developer

Our Client is a leading global financial markets company specializing in derivatives trading and market infrastructure, operating one of the world's largest and most diverse derivatives marketplaces.

• Minimum 3+ years of hands-on Java development experience (Java 8 or 11)
• Strong understanding of Java core concepts: OOP, JVM, JNI, Maven
• Proficiency in advanced Java features: Multithreading, HashMap, Asynchronous programming, Concurrency, Shared memory
• Experience with Garbage Collection optimization and memory management
• Hands-on experience with IntelliJ IDEA development environment
• Deep knowledge of data structures and their performance characteristics (time and space complexity)
• Proven experience in financial services or trading desk environments
• Working knowledge of Agile/Scrum methodologies and CI/CD practices
• Strong analytical and problem-solving skills
• Ability to adapt quickly to dynamic work environments and make independent decisions
• Self-motivated individual who thrives in fast-paced, challenging environments
• Comfortable working both independently and as part of collaborative teams
• Excellent verbal and written communication skills in English (B2+ level)
• Strong team collaboration and interpersonal skills

Nice to have:

• Experience with Google Cloud Platform (GCP)
• Knowledge of containerization technologies, including Docker and Docker Swarm Manager
• Familiarity with the Kubernetes orchestration platform
• Experience with Jenkins for continuous integration and deployment
• Knowledge of Ansible for configuration management and automation
• Understanding of cloud-native development practices
• Experience with performance monitoring and observability tools

• Design and develop robust Java applications using Core Java (8/11) with J2EE Architecture
• Build and maintain a microservices architecture with REST APIs
• Conduct performance tuning through benchmarking and capacity testing to identify system bottlenecks
• Optimize applications for high throughput by managing memory allocation and Java runtime options
• Minimize Garbage Collection impact and develop resource-efficient code
• Monitor and optimize system performance, including memory utilization, CPU usage, disk I/O, and system load
• Participate in code reviews and ensure adherence to development best practices
• Collaborate with cross-functional teams in an Agile/Scrum environment
• Support Google Cloud Platform transformation initiatives
• Solve complex technical problems creatively and communicate solutions effectively
• Provide L3 technical support for system components when required
• Lead and mentor team members to achieve critical project objectives

This position offers remote work within Poland and requires working in the US Central Time zone (2 pm-10 pm).