FX Senior Java Developer (f/m/x)

We are looking for an experienced Senior Java Developer to join a team responsible for building and developing modern backend systems in a distributed environment. The projects involve high-performance and scalable solutions used in the financial sector, with a focus on processing large volumes of data and microservices architecture.

Your tasks

• Designing and developing backend systems based on Java

• Creating and evolving a microservices architecture

• Building and maintaining REST APIs and system integrations

• Designing solutions that meet high availability and performance requirements

• Working with systems that process large volumes of data

• Collaborating with the team using Agile methodologies

• Participating in architecture design and technical decision-making

• Implementing and optimizing CI/CD processes and ensuring system security

Requirements

• Minimum 10 years in software development

• Very good knowledge of Java (backend) and Spring

• Strong understanding of REST APIs, HTTPS, microservices, and message queues (MQ)

• Ability to design high-availability, scalable, and high-performance systems

• Very good knowledge of relational databases (SQL)

• Familiarity with CI/CD pipelines and Agile ways of working

• Knowledge of distributed systems and data processing

• Hands-on work with Kubernetes and cloud platforms (GCP preferred)

• Fluent Polish and English required

• Residing in Poland required

Nice-to-have requirements

• Knowledge of Go, Rust, or similar system-level languages

• Experience with NoSQL and analytical databases, e.g., ClickHouse

• Frontend development experience

• Familiarity with the banking sector (trade lifecycle, FX, post-trade processing)

• Banking experience / FX experience (forex)

• Working from the office in Krakow 6 times per month

What we offer

• Great Place to Work since 2015 - it’s thanks to feedback from our workers that we get this special title and constantly implement new ideas

• Employment stability - revenue of PLN 2.1BN, no debts, since 2006 on the market

• We share the profit with Workers - over PLN 76M has already been allocated for this aim since 2022

• Attractive benefits package - private healthcare, benefits cafeteria platform, car discounts and more

• Comfortable workplace – class A offices or remote work

• Dozens of fascinating projects for prestigious brands from all over the world

• PLN 1 000 000 per year for your ideas - with this amount, we support the passions and voluntary actions of our workers

• Investment in your growth – meetups, webinars, training platform and technology blog – you choose

• Fantastic atmosphere created by all Sii Power People

If you want to work on systems with high operational significance — apply now!