Jobs in Katowice, Poland

The platform is built on an event-sourcing approach, featuring a dynamically scalable microservices architecture with a cluster-based deployment. Designed with a strong focus on high availability and partition tolerance to ensure resilience, real-time processing, and seamless scalability for complex transaction flows.

Application Development: Scala, Akka(Clustering, Sharding, Persistence, Distributed Data), Play. Data Streaming and Storage: Apache Kafka, Cassandra(multi-DC), Amazon S3. Build and Continuous Integration: SBT, GitLab CI. Container Orchestration: Kubernetes.

• Delivering reliable and maintainable software, emphasizing solid design principles and thorough code reviews;
• Designing and implementing new features for a high-load transaction processing platform;
• Continuously improving and optimizing existing systems and processes;
• Collaborating across teams to deliver cohesive, end-to-end solutions;
• Contributing to the platform’s architecture and scalability in a cloud environment;
• Designing, developing, and deploying microservices within an Agile framework.

• 3+ years of experience with Scala;
• 5+ years of experience with Java;
• Strong knowledge of Scala and its ecosystem (e. g. , sbt, Akka, Play Framework);
• Familiarity with Agile methodologies and functional programming principles;
• Understanding how the JVM, JDK/JRE, and accompanying technologies work;
• Proficiency in database technologies (SQL and NoSQL) and hands-on experience with Kafka;
• Collaborative mindset and fast learner.

• Familiarity with Kubernetes and Docker;
• Experience with Cassandra or other column-family databases;
• Understanding of CI/CD tools and methodologies;
• Experience with distributed systems.

An annual fixed budget that you can use based on your needs and lifestyle. You decide how to allocate it:

• Sports – gym, yoga, or any activity to keep you active;
• Medical – insurance and wellness services;
• Mental health– therapy or coaching support;
• Home office – ergonomic furniture, gadgets, and tools;
• Languages – courses to improve or learn new skills.

• Parental support with paid maternity/paternity leave and monthly childcare allowance;
• 20+ vacation days, unlimited sick leave, and emergency time off;
• Remote-first setup with full tech support and coworking compensation;
• Regular team events – online, offline, and offsite;
• Learning culture with internal courses, career development programs, and real growth opportunities.

GR8 Tech culture is how we win. Behind every bold idea and breakthrough is a foundation of trust, ownership, and a growth mindset. We move fast, stay curious, and always keep it real, with open feedback, room to experiment, and a team that’s got your back.

• FUELLED BY TRUST: we’re open, honest, and have each other’s backs;
• OWN YOUR GAME : we take initiative and own what we do;
• ACCELER8: we move fast, focus smart, and keep it simple;
• CHALLENGE ACCEPTED: we grow through challenges and stay curious;
• BULLETPROOF: we’re resilient, ready, and always have a plan.

To keep things efficient, please apply only for roles that closely match your experience.