Senior Java Back-End Developer – Financial Services Trading Platform

Unleash Innovation in Global Finance — Drive Cutting-Edge Post-Trading Risk Solutions Krakow-based opportunity with hybrid work model (up to 3 days remote/week) As a Senior Java Back-End Developer, you will be working for our client, a leader in the financial services industry, focusing on the development of a critical FX Calculations platform. This role involves building and maintaining high-availability systems that support traders' daily activities and ensure regulatory compliance — empowering the future of digital finance and risk management. Your main responsibilities: • Develop, improve, and maintain the bank’s proprietary solution for post-trading risk and PnL calculations, ensuring system robustness and accuracy. • Collaborate with cross-functional teams to perform end-to-end project delivery, including requirement analysis, coding, testing, and deployment. • Design detailed technical specifications covering data models, interfaces, and performance tuning. • Provide production support, incident management, and system ownership, including troubleshooting and performance enhancements. • Participate in code reviews, solution design discussions, and team activities to promote continuous improvement and best practices. • Support and contribute to problem-solving, performance tuning, and proof-of-concept initiatives. You're ideal for this role if you have: • Over 5 years of experience in Java back-end development, with a solid understanding of HTTPS, RESTful APIs, microservices, and message queues (MQ). • Strong knowledge of high-availability service architecture and reliable system design. • Hands-on experience with SQL, particularly PostgreSQL, including database performance optimization. • Proven track record of delivering Java-based services/modules and owning or leading technical projects. • Excellent communication skills in English, with the ability to facilitate discussions and presentations, and proficiency in Mandarin is a plus. • Analytical mindset, problem-solving skills, and passion for technology innovation. • Ability to perform under pressure and work effectively as a team player. It is a strong plus if you have: • Experience in high-volume data processing and compute. • Knowledge of no-SQL databases or columnar storage solutions. • Experience building services on cloud platforms, especially GCP. • Front-end development skills or experience. • Background in production support and agile development environments. • Domain expertise in banking, trade lifecycle, and post-trade processing for FX or financial investment products. Language Required for the role: • Fluent spoken and written English Eligibility to work on this role: • Only candidates with an existing legal right to work in the European Union will be considered for this role. #MAKEYourCareerBETTER Interested? Apply now and include your CV (preferably in English) along with a statement confirming your consent to the processing and storage of your personal data.