Senior Java Developer

Java

-, Warszawa

Caspian One

Full-time

B2B

Senior

Remote

Tech stack

Java

advanced

SQL

regular

Job description

Java Developer - Finance & Capital Markets

Location: Poland (Remote/Hybrid/On-site)

About the Role

Hiring for a talented Java Developer to join a dynamic team in the finance and capital markets sector in Poland. This is an exciting opportunity to work on cutting-edge financial technology solutions that power trading systems, risk management platforms, regulatory compliance systems and market data processing applications used by leading financial institutions.

Key Responsibilities

Development & Engineering

• Design, develop, and maintain high-performance Java applications for financial platforms

• Build robust APIs and microservices for real-time market data processing and order management

• Implement solutions for algorithmic trading and risk calculation engines

• Develop and optimise database queries for large-scale financial datasets

Technical Excellence

• Write clean, testable, and maintainable code following industry best practices

• Participate in code reviews and contribute to technical architecture decisions

Technical Expertise

• 5+ years of professional Java development experience (Java 8+, Spring Framework)

• Strong knowledge of multithreading, concurrency, and performance optimisation

• Experience with databases (Oracle, PostgreSQL, MongoDB) and SQL optimisation

• Proficiency in build tools (Maven, Gradle) and version control (Git)

• Understanding of RESTful APIs, messaging systems (JMS, RabbitMQ, Kafka)

Looking forward to receiving your CV!

Published: 17.08.2025

Meet the company

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.

Company profile

Office location