Senior Java Engineer Hybrid: Build Scalable iGaming Systems

HybridKatowice, Silesian Voivodeship, PolandStockholm, Stockholm County, Sweden; Poland; Hybrid; PLN 180,000 - 280,000; Full time

Benefits offered by this job

Competitive remuneration

Bonus scheme

Team events (weekly/quarterly)

Home workstation setup bonus

Remote up to 40 days/year

Job summary

ComeOn Group in Katowice, Poland or Stockholm, Sweden, is seeking a Senior Java developer to join our hybrid team. You will work across the full stack—from server-side Java services to potential frontend work—on a platform used for casino and sports betting.

You’ll collaborate with a cross-functional team and mentors while modernizing a long-standing codebase. You should have 6+ years of Java experience, strong SQL, and a passion for reading legacy code.

Qualifications

• Deep experience in using Java.

Responsibilities

• Work on all parts of the system and all stages of the development process.
• Integrate with external systems and develop internal components.
• Possibly frontend development for mobile and desktop devices.
• Collaborate with business side to develop and implement new features.
• Utilize technologies such as Java, Kafka, Docker, MongoDB, MySQL and React.

Skills

Java

Web app development

SQL

Legacy code testing

Agile

English fluent

Communication

Team collaboration

Tools

Tomcat

Maven

Spring

MongoDB

Guava

Guice

MySQL

Nginx

Linux

Jenkins

Git

Docker

Kubernetes

gcloud

Job description

ComeOn Group in Katowice, Poland or Stockholm, Sweden, is seeking a Senior Java developer to join our hybrid team. You will work across the full stack—from server-side Java services to potential frontend work—on a platform used for casino and sports betting.

You’ll collaborate with a cross-functional team and mentors while modernizing a long-standing codebase. You should have 6+ years of Java experience, strong SQL, and a passion for reading legacy code.