Who We AreAt Patrianna LTD, we’re building a global social entertainment platform, focusing on innovative sports-oriented skill games for the North American market. With a reach of up to 150 million players worldwide, we combine creativity and technical excellence to lead in the dynamic world of social gaming.Who We’re Looking ForWe’re seeking a skilled Senior Java Engineer to join our backend team in Ukraine/EU and contribute to the development of innovative skill-based sports betting games. In this role, you will:Design and deliver clean, scalable, and testable code with minimal supervisionCollaborate with backend, web, mobile, QA, and product teams to ensure smooth development processesTake ownership of specific services or functionalitiesIf you’re passionate about building high-quality solutions and ready to make an impact, we’d love to have you on our team.Requirements:Must have:6+ years of production experience with Java and its ecosystemSolid Java knowledge and understanding of JVM internalsExcellent knowledge of relational database principles (preferably PostgreSQL)Solid understanding of messaging concepts (preferably Kafka ecosystem)Good understanding of concurrency concepts and principlesExceptional troubleshooting skillsGood understanding of relevant security best practicesAt least upper-intermediate proficiency in EnglishWould be a plus:Expertise in multithreading and high-load systemsDeep understanding of Kafka internals and principlesExperience in the sports betting domainStrong mathematical backgroundOur Tech StackJava 23 Spring Boot 3.4.1 Google Cloud Platform:KubernetesKafkaAlloyDB for PostgreSQLSpannerEbean ORMFlywayRedisQuartzWebsocketsRetoolTest ContainersLocust for perf testingJenkins/ArgoCDELK/Sentry/GrafanaJira/Confluence/Slack/BitbucketWe offerModern tech stackFresh, well-maintained codebase featuring high test coverageMinimal bureaucracy and fast approval processesAbility to work with highly skilled, passionate, and supportive teammatesChance to make a global impact by contributing to projects experiencing exponential user growthOther BenefitsFull Remote Work: Enjoy the flexibility of working remotely from wherever you feel most productive.Medical/Sport Compensation: Receive private monthly compensation towards medical expenses or sports-related activities to support your health and well-being.Generous Leave Policy: Take advantage of 30 days of paid time off, encompassing both vacation and sick leave, to ensure you can recharge and recover when needed. Take your time on bank holidays as well.Company Events: Engage in our vibrant company culture through a variety of informal events designed to foster camaraderie and teamwork.Continuously Development: Get an opportunity to join a fast-growing business where the sky’s the limit.