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Database Administrator (MongoDB)

Kaizengaming

Athens, Greece (Greece - Athens, Greece - Thessaloniki) Remote permanent

Posted: January 29, 2026

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Quick Summary

We are looking for a Database Administrator to join our team in Athens, Greece. The ideal candidate should have experience with MongoDB and be able to work with a diverse team of developers and designers.

Job Description

We are Kaizen Gaming

Kaizen Gaming, the team powering Betano, is one of the biggest GameTech companies in the world, operating in 19 markets. We always aim to leverage cutting-edge technology, providing the best experience to our millions of customers who trust us for their entertainment.

We are a diverse team of more than 2.700 Kaizeners, from 40+ nationalities spreading across 3 continents.

Our #oneteam is proud to be among the Best Workplaces in Europe and certified Great Place to Work across our offices. Here, there’ll be no average day for you. Ready to Press Play on Potential?

Let's start with the role

We are looking for an experienced MongoDB Database Administrator with a deep understanding of MongoDB Atlas and Ops Manager. This role focuses on optimizing, securing, and scaling our MongoDB environments to ensure high availability and performance. We are seeking a professional with hands-on experience in tuning MongoDB solutions and implementing robust backup and recovery processes.

As a Database Administrator, you will:

• Manage and maintain multiple database servers across various environments using Atlas and Ops Manager, ensuring consistent availability and performance.

• Design and implement redundancy and failover strategies.

• Monitor database performance, tune and identify areas for improvement.

• Configure and maintain replica sets and sharded clusters to support scalability and resilience.

• Define and implement backup strategies aligned with data retention requirements.

• Optimize queries and indexing strategies.

• Enforce best practices for data security, including user access control, data encryption and compliance with regulatory standards.

• Diagnose and resolve production issues as needed, including 24/7 support.

• Conduct root cause analysis and implement corrective actions to prevent recurrence.

• Develop and document best practices for maintenance, monitoring, migration, and failover strategies.

• Use automation tools to streamline database management processes.

What you’ll bring:

• Minimum 3+ years of experience working with large distributed database systems, with focus on performance and tuning.

• Proven experience with MongoDB scaling across data centers and/or in-depth understanding of MongoDB HA strategies, including replica sets and sharding.

• Strong operational experience with NoSQL Data Modeling.

• Deep knowledge of DB performance/scaling concepts and tuning best practices.

• Ability to write and maintain Unix/Linux shell scripts would be considered an advantage.

• Bachelor’s degree in Engineering or equivalent experience.

• Highly self-motivated with a strong desire to embrace new database technologies, and able to work independently or as part of a team in a high-demand, dynamic environment.

• Strong team player with excellent written and verbal skills.

• Ability to work in a fast-paced development environment with a broad scope of responsibilities.

• Strong communication skills and a collaborative mindset, comfortable with working across functional teams.

It’s a plus if you bring:

• Experience with RSBMS systems ( MSSQL, PostgreSQL ) will be considered a plus.

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We are an equal opportunity employer committed to fostering a diverse and inclusive workplace. We welcome applications from individuals of all backgrounds, regardless of race, gender, religion, sexual orientation,or age.

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