Senior Java 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.

Why this role exists:

This role exists to architect and ship the high-performance backbone of our platforms. You’ll help us achieve global scalability by owning the end-to-end delivery of resilient Java-based microservices and mentoring the next generation of engineering talent.

What you’ll drive:

Architecture & Technical Decisions

• Design and evolve scalable microservices using Java 17+ and Spring Boot.
• Apply resilience patterns (Circuit Breaker, Bulkhead, Rate Limiting) to ensure systems thrive under pressure.
• Evaluate and select database strategies (PostgreSQL, NoSQL, Redis) based on specific performance trade-offs.
• Design event-driven architectures utilizing Kafka or RabbitMQ to handle real-time data flow.

Delivery & Execution

• Own the full development lifecycle—from initial requirement elicitation to production release.
• Ship clean, maintainable, and highly efficient code that sets the standard for the team.
• Optimize application performance by profiling JVM internals and fine-tuning garbage collection.
• Unblock the release pipeline by automating testing and improving CI/CD workflows in GitLab.

Quality & Reliability

• Enforce "Security by Design" and secure coding practices (OWASP Top 10) across all services.
• Drive continuous improvement in testing protocols, including integration, performance, and BDD.
• Identify and resolve complex production bottlenecks using monitoring tools like ELK or Datadog.
• Maintain comprehensive technical documentation that simplifies complex system designs for others.

Team Growth & Leadership

• Mentor junior and middle engineers through high-quality code reviews and technical guidance.
• Partner with Product Managers and Delivery Managers to align technical roadmaps with business outcomes.
• Foster an Agile culture by actively participating in planning, estimation, and iterative delivery.

What makes you a GR8 fit:

Must-have

• 5+ years of commercial experience in Java development (Senior level).
• Mastery of Spring Ecosystem (Boot, Data, Security) and Hibernate/JPA.
• Deep understanding of distributed systems: Microservices, Event-driven design, and CAP theorem.
• Strong Database expertise: Proficiency in complex SQL, indexing strategies, and transaction isolation.
• Hands-on DevOps mindset: Practical experience with Docker, Kubernetes, and CI/CD automation.
• Solid Cloud knowledge: Experience building and scaling applications in AWS (preferred).
• Architecture fluency: Ability to explain design trade-offs and visualize systems using UML or similar tools.

Nice-to-have

• Experience with GitLab CI and Infrastructure as Code (Terraform/Ansible).
• Familiarity with FinOps principles to optimize cloud resource consumption.
• Background in iGaming or high-frequency Fintech environments.
• Knowledge of reactive frameworks like Vert.x or Micronaut.

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.