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

Sii
Sii Polska to czołowy dostawca doradztwa technologicznego, transformacji cyfrowej oraz usług biznesowych i inżynieryjnych. Firma obecna jest na rynku od 2006 roku, zatrudnia ponad 7 500 ekspertów, jedenastokrotnie zdobył...FX Senior Java Developer (f/m/x)
FX Senior Java Developer (f/m/x)