Middle Java Developer
Raiffeisen Bank Ukraine
Middle Java Developer
gr8tech· Streaming & Traffic
About this role
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.
Why this role exists:
This role exists to design, build, and maintain streaming data solutions based on Apache Kafka and related technologies, ensuring reliable data processing, integration, and testing of streaming applications.
What you’ll drive:
Streaming pipelines & data flow
- Build and maintain data pipelines using Apache Kafka, including topics, partitions, and consumer group tuning.
- Implement and manage Kafka Connect source and sink connectors for integrations.
Streaming application development
- Design and develop stateful streaming applications using Kafka Streams or Flink with Java (and Scala where applicable).
- Ensure data consistency and schema evolution using Schema Registry (Avro).
Quality & testing
- Write and maintain unit and integration tests for streaming topologies.
What makes you a GR8 fit:
Must-have
- 3+ years of experience in back end.
- Commercial experience in software engineering with strong proficiency in Java (Scala is a plus).
- Understanding of Apache Kafka architecture and internals.
- Experience working with Apache Flink.
- Experience with Schema Registry and schema evolution strategies.
- Knowledge of serialization formats such as Avro and JSON.
- Experience using SQL for processing large datasets.
- Upper-intermediate or higher level of English.
Nice-to-have
- Experience running Kafka and/or Flink on Kubernetes.
- Familiarity with monitoring tools such as Prometheus and Grafana for streaming metrics.
- Understanding of stream 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.
Frequently Asked Questions
Is the salary disclosed for the Middle Java Developer position at gr8tech?
The salary for this Middle Java Developer role at gr8tech is not publicly listed. Click "Apply Now" to learn more about the compensation package on their official careers page.
Is the Middle Java Developer job at gr8tech remote?
Yes, this Middle Java Developer position at gr8tech is remote, with team members based in Anywhere. You can work from home or anywhere in the supported regions.
Which team or department does the Middle Java Developer at gr8tech belong to?
This Middle Java Developer position is part of the Streaming & Traffic department at gr8tech. See the full job description for more information about the team structure and responsibilities.
How do I apply for the Middle Java Developer position at gr8tech?
Click the "Apply Now" button on this page. You will be redirected to gr8tech's official application portal hosted on greenhouse where you can submit your application directly.
When was the Middle Java Developer job at gr8tech posted?
This Middle Java Developer position at gr8tech was posted on Jun 10, 2026. Apply as soon as possible — early applications are often reviewed first.
Middle Java Developer
gr8tech
You'll be redirected to gr8tech's official application page on Greenhouse.