Middle Java (Streaming) Developer

GR8 Tech builds B2B iGaming platforms for operators who play to lead.

We deliver full-cycle, high-impact tech designed to scale — from seamless integrations and expert consulting to long-term operational support. Our platform powers millions of active players and drives real business growth. Call it what it is: the iGaming Platform for Champions.

With 1000+ GR8 people across locations and time zones, we don’t just ship technology — we help operators build success stories across brands, markets, and geos.

Our ambition drives us. Our people make it real.

If you’re a challenger in spirit and a champion in action — join us.

• Building and maintaining robust data pipelines with Apache Kafka (topics, partitions, consumer groups tuning);
• Designing and developing stateful streaming applications using Apache Kafka Streams/Flink and Java/Scala;
• Implementing and managing Kafka Connect source/sink connectors for various integration points;
• Ensuring data consistency and evolution using Schema Registry (Avro);
• Writing unit and integration tests for streaming topologies.

• Commercial experience in Software Engineering with strong proficiency in Java (Scala is a plus);
• Understanding of Apache Kafka architecture and internals;
• Experience with Apache Flink;
• Experience with Schema Registry and schema evolution strategies;
• Knowledge of serialization formats (Avro, JSON);
• Experience with SQL in processing big datasets.

Nice to Have:

• Experience running Flink/Kafka on Kubernetes;
• Familiarity with monitoring tools (Prometheus, Grafana) for streaming metrics;
• Understanding of processing semantics;
• Experience with CI/CD pipelines for streaming applications.

Why you’ll love working here: 

Benefits Cafeteria — annual budget you allocate to:

Sports • Medical • Mental health • Home office • Languages.

Work-life & support

• Paid maternity/paternity leave + monthly childcare allowance.
• 20+ vacation days, unlimited sick leave, emergency time off.
• Remote-first + tech support + coworking compensation.
• Team events (online/offline/offsite).
• Learning culture with internal courses + growth programs.

Our culture & core values:

GR8 Tech culture is how we win — through trust, ownership, and a growth mindset. We move fast, stay curious, and 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.