Middle Java Developer

Middle Java Developer

Java

Remote, Poland (Remote) +4 Locations

GR8 Tech

Full-time
Permanent, B2B
Mid
Remote

Tech stack

    RabbitMQ

    regular

    Java 8+

    regular

    MongoDB

    regular

    Kafka

    regular

    Java

    regular

    Spring

    regular

Job description

GR8 Tech is a leading B2B provider of iGaming solutions that empowers operators to grow, lead, and win.


We deliver high-impact, full-cycle tech solutions designed to scale. From seamless integration and expert consulting to long-term operational support, our platform powers millions of active players and drives real business growth. It’s more than just a product — it’s the iGaming Platform for Champions, built for those who play to lead.


We know the game and how to take it to the next level. With 1000+ talented professionals on board, we don't just build tech — we build success stories for iGaming operators all over the world. 


Our ambition drives us, our people make it real. Join us and be part of building champion-level success!


Our team is building a suite of services for managing and processing Casino domain-specific content and data. The backend architecture is designed from scratch using a modern tech stack, with a strong focus on dynamically scalable microservices and cluster-based infrastructure. Key responsibilities include implementing services for content management, delivering data to the frontend via a Change Data Capture (CDC) approach, and developing new features driven by evolving product requirements.


What You’ll Be Driving:

  • Writing, testing, and debugging code for software applications, ensuring functionality and efficiency;

  • Developing and implementing new features based on project requirements and specifications;

  • Participating in code reviews, providing constructive feedback to ensure code quality and adherence to best practices;

  • Maintaining and updating technical documentation for software development and user guides;

  • Working collaboratively with cross-functional teams, including product managers, designers, and other engineers, to deliver projects;

  • Troubleshooting and resolving software issues and bugs in a timely manner;

  • Optimize software applications for performance and scalability;

  • Developing and executing unit tests and integration tests to ensure software reliability;

  • Assisting junior engineers with technical guidance and support;

  • Staying updated with the latest technologies and best practices in software development;

  • Contributing to project planning, estimation, and tracking to ensure successful delivery;

  • Ensuring high-quality standards are met through rigorous testing and code reviews;

  • Delivering code to production in timely manner according to business expectations.


What Makes You a GR8 Fit:

  • Deep knowledge of core Java (OOP, exceptions, multithreading, collections);

  • Expertise in Java 8+ (Streams, Lambdas, Functional Interfaces, Date/Time API);

  • Understanding of JVM internals and performance tuning;

  • Advanced experience with Spring (Boot, MVC, Data, Security);

  • Strong background in Hibernate/JPA, Maven, Gradle;

  • Proficient in relational and NoSQL databases (e.g., MongoDB);

  • Strong background in microservices design and integration with Kafka, RabbitMQ;

  • Understanding of cloud models (IaaS, PaaS, SaaS); experience with AWS is a plus;

  • Proficient with Docker, Kubernetes, CI/CD pipelines (GitLab, Jenkins), and IaC (Terraform);

  • Skilled in gathering and analyzing functional and non-functional requirements;

  • Familiar with Agile, Scrum, Kanban, and Waterfall methodologies;

  • Advanced Git usage (branching, rebasing, merge conflict resolution).

 

Why You’ll Love Working Here:


Benefits Cafeteria

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.


Work-life 

  • 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.


Our Culture & Core Values


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.

Published: 13.08.2025

Meet the company

GR8 Tech

GR8 Tech is a global product company that provides innovative, scalable platforms and business solutions for the iGaming industry. We offer: international experience and interesting technological stack, fully remote optional with strong benefits package, developed culture within the company.

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