Senior Java Developer

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
What You'll Be Driving:

• Design and implement scalable and efficient software architectures.
• Write, test, and debug complex code for new and existing software applications.
• Provide guidance and mentorship to junior engineers and team members.
• Conduct thorough code reviews to ensure code quality, security, and best practices.
• Create and maintain comprehensive technical documentation for software development and system design.
• Lead and manage software development projects, ensuring timely delivery and quality(shared responsibility with Delivery Manager)
• Work closely with cross-functional teams, including product management, design, and operations, to align development efforts with business goals.
• Research and implement new technologies and methodologies to improve software performance and development processes.
• Identify and resolve complex software issues and technical challenges.
• Develop and enforce testing protocols to ensure software reliability and performance.
• Drive continuous improvement in software development practices and processes.
• Communicate effectively with stakeholders, including presenting technical concepts and project updates.
• Deliver code to production in timely manner according to business expectations

What Makes You a GR8 Fit:

Advanced knowledge of Java Programming

• Proficiency in core Java concepts such as OOP (Object-Oriented Programming), multithreading, collections, exception handling, and memory management.
• In-depth understanding of Java 8+ features, including Streams API, lambda expressions, Optional, and the new Date and Time API.
• Mastery of Java concurrency and synchronization, thread pooling, and concurrent data structures.
• Experience with JVM internals, including garbage collection, performance tuning, and profiling

Java Frameworks and Libraries

• Extensive experience with Spring Framework (Spring Boot, Spring MVC, Spring Data, Spring Security).
• Proficiency in Hibernate or JPA for ORM (Object-Relational Mapping) and data access.
• Familiarity with other Java-based frameworks like Apache Camel, Vert.x, or Micronaut.
• Knowledge of build tools like Maven and Gradle for project management and dependency management.

Web Development

• Proficiency in building RESTful APIs and web services using frameworks like Spring Boot or JAX-RS.
• Understanding of web technologies such as HTML, CSS, JavaScript, and front-end frameworks (e.g., Angular, React, or ).
• Experience with asynchronous programming and handling real-time data using WebSockets.

Testing and Quality Assurance

• Expertise in unit testing with JUnit, TestNG, and integration testing frameworks.
• Knowledge of mocking frameworks such as Mockito or PowerMock.
• Familiarity with behavior-driven development (BDD) tools like Cucumber or JBehave.
• Experience with performance testing tools like JMeter or Gatling.

Database and Persistence

• Advanced skills in SQL and experience with relational databases (e.g., PostgreSQL, MySQL, Oracle).
• Proficiency in working with NoSQL databases (e.g., MongoDB, Cassandra, Redis).
• Experience with database migration tools like Flyway or Liquibase.

DevOps and Continuous Integration

• Experience with CI/CD tools specific to Java projects, such as Jenkins, GitLab CI, or Travis CI.
• Proficiency in using Docker for containerization and Kubernetes for orchestration of Java applications.
• Knowledge of infrastructure as code (IaC) tools like Terraform or Ansible for provisioning and managing infrastructure.

Performance and Scalability

• Skills in profiling and monitoring Java applications using tools like VisualVM, JProfiler, or YourKit.
• Experience in optimizing application performance, including memory management, CPU usage, and response time.
• Understanding of load balancing, caching strategies (e.g., EHCache, Hazelcast), and distributed systems.

Security

• Knowledge of secure coding practices and understanding of common security vulnerabilities (e.g., OWASP Top Ten).
• Experience with authentication and authorization mechanisms, including OAuth2, JWT, and SAML.
• Proficiency in implementing security features within the Spring Security framework.

Advanced Networking

• Understanding of network programming using Java NIO and async I/O.
• Experience with messaging systems like Apache Kafka, RabbitMQ, or ActiveMQ.

Additional Tools and Technologies

• Familiarity with version control systems like Git and collaboration platforms like GitHub or Bitbucket.
• Knowledge of code quality and static analysis tools such as SonarQube, PMD, or Checkstyle.
• Experience with logging frameworks like SLF4J, Logback, or Log4j.

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.