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    Senior Java Developer

    location iconAnywhere
    onsite
    Published on December 25, 2025
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    GR8 Tech logo

    GR8 Tech

    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!

    What You’ll Be Driving:

    • Designing and implementing scalable and efficient software architectures;
    • Writing, testing, and debugging complex code for new and existing software applications;
    • Providing guidance and mentorship to junior engineers and team members;
    • Conducting thorough code reviews to ensure code quality, security, and best practices;
    • Creating and maintaining comprehensive technical documentation for software development and system design;
    • Leading and managing software development projects, ensuring timely delivery and quality(shared responsibility with Delivery Manager);
    • Working closely with cross-functional teams, including product management, design, and operations, to align development efforts with business goals;
    • Researching and implementing new technologies and methodologies to improve software performance and development processes;
    • Identifying and resolving complex software issues and technical challenges;
    • Developing and enforcing testing protocols to ensure software reliability and performance;
    • Driving continuous improvement in software development practices and processes;
    • Communicating effectively with stakeholders, including presenting technical concepts and project updates;
    • Delivering 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 Vue.js);
    • 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.