Caspian One
Caspian One is a financial technology services partner, delivering high-impact opportunities within global banks, hedge funds, and fintechs. We specialise in strategic skillset acquisition across Java, C#, QA/Testing, DevOps, Data Engineering, Front End (UI/UX), and Project Delivery (BA, PM, Scrum Master). From modernisation programmes to greenfield builds, we align expert resources with mission-critical priorities - enabling you to grow your expertise within fast-paced, business-driven environments.
About the Role
We're seeking an experienced Java Developer to contribute to innovative financial technology solutions that drive the global capital markets. You'll be part of a collaborative team developing mission-critical systems including high-performance trading platforms, sophisticated risk management tools, regulatory compliance frameworks, and real-time market data processing engines trusted by top-tier financial institutions worldwide.
What You'll Do
Design and develop robust, scalable financial applications using modern Java technologies
Build and optimise high-throughput trading systems and market data processing solutions
Collaborate with cross-functional teams to deliver risk management and compliance platforms
Implement RESTful services and integrate messaging systems for real-time data flow
Optimise database performance and ensure system reliability in fast-paced trading environments
Required Qualifications
5+ years of hands-on Java development experience with modern versions (Java 8 and above)
Strong expertise in Spring Framework and enterprise application development
Proven experience with relational and NoSQL databases including Oracle, PostgreSQL, and MongoDB
Demonstrated skills in SQL optimisation and database performance tuning
Proficiency with build automation tools (Maven, Gradle)
Experience with Git version control and collaborative development workflows
Solid understanding of RESTful API design and implementation
Knowledge of enterprise messaging systems (JMS, RabbitMQ, Kafka)
Be happy to work in a hybrid model - 3 days per week in the office in Central Krakow
Net per hour - B2B
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