Senior Backend Developer

At Campeón Gaming , we build the technology behind online casino and sports betting brands .

We provide an all-in-one platform that allows our partners to launch, run, and grow their own brand with our engine. From the technology to the day-to-day operations, we support everything needed to make a brand successful.

Our platform is fast, flexible, and designed to scale across regulated markets worldwide. Also, we offer managed services such as Payments, CRM, Customer Support, KYC & Fraud, Affiliates, and Casino & Sportsbook Management.

This allows our partners to focus on growing their brand , while we support the technology and core operational functions of the platform.

But what truly sets us apart is our people .

We are a team of 190+ Campeones from 17+ nationalities , bringing together diverse perspectives, ideas, and expertise. Our culture is rooted in being people-first , building trust , embracing meraki , fostering team spirit , and adopting a growth mindset , both as individuals and as a company.

We’ve been recognized among the Best Workplaces in Europe 2024 , consistently ranked as a Best Workplace in Greece (2021–2025) , certified as a Great Place to Work for 6 consecutive years , and awarded as Best Workplace for Women Hellas 2026 and Best Workplace in Tech Hellas 2025 .

Ready to build this journey together? Your story starts here!

About the Role

We are currently looking for a motivated Senior Backend Developer to join our team.

Responsibilities

• Analyze and implement back-end solutions according to business requirements.
• Follow and promote software development design patterns and best practices.
• Integrate new gaming and payment providers.

Requirements

• BSc in computer science or relevant field.
• Fluency in written and verbal English.
• Minimum 5 years of experience in backend development.
• Minimum 5 years of experience developing in JAVA.
• Confidence in RESTful services.
• Experience with GraphQL , Redis, Postgres.
• Basic Git knowledge.
• Ability to work both as an individual and as part of a team.
• Experience in the iGaming industry will be considered a plus.
• Show initiative to expand knowledge.

We got you covered here

• Competitive Salary
• Access to LinkedIn Learning programs as well as funding to educational programs of your choice
• Monthly allowance for orders via the Wolt App & free drinks and snacks at the office
• Paid educational leave
• Hybrid working model
• Modern offices in the center of Thessaloniki
• 360 feedback for Constant personal and professional development
• 6 Company Extra Days off!

Diversity, Equity & Inclusion

At Campeón Gaming, we believe every story deserves to be heard and valued. We are proud signatories of the Diversity Charter Greece, reinforcing our commitment to a culture of equality, respect, and inclusion.

We welcome and celebrate people of all backgrounds, experiences, and perspectives. For us, diversity is not just a principle. It’s a strength that drives innovation, connection, and collective success.

Every story deserves a shared journey. Ready to be a Campe ό n?