Kaizen Gaming Careers - Database Administrator Team Lead

We are Kaizen Gaming

Kaizen Gaming, the team powering Betano, is one of the biggest GameTech companies in the world, operating in 20 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 Team Lead with a deep understanding of MongoDB Atlas and Ops Manager / Percona operator and other distributed databases to lead and support our distributed DB engines.This role combines hands-on technical expertise with team leadership and delivery ownership, focusing on optimizing, securing, and scaling distributed database environments for high availability, performance, and resilience.

The ideal candidate will actively contribute to technical work while also leading the distributed databases group of the DBA team, managing priorities and backlog, and ensuring operational excellence across environments.Experience with RDBMS systems (MS SQL Server, PostgreSQL) will be considered a strong plus.

As a Database Administrator Team Lead, you will:

Technical & Operational Responsibilities

Manage and maintain multiple MongoDB database environments using MongoDB Atlas / Ops Manager / Percona operator, and other distributed engines like cockroachDB ensuring high availability and performance.
Design and implement redundancy, failover, and disaster recovery strategies.
Configure, maintain, and optimize replica sets and sharded clusters.
Monitor database performance and proactively identify tuning and optimization opportunities.
Define and implement backup and recovery strategies aligned with data retention and business requirements.
Optimize queries, indexing strategies, and data models for performance and scalability.
Enforce security best practices, including access control, encryption, and compliance with regulatory standards.
Diagnose and resolve production incidents, participate in on-call rotations, and support 24x7 operations when required.
Conduct root cause analysis (RCA) and implement corrective and preventive actions.
Develop and maintain documentation for best practices, operational procedures, migrations, and failover strategies.
Use automation tools to streamline and standardize database operations.

Team Leadership & Delivery Responsibilities

Lead a group of DBAs focusing on distributed databases, providing technical guidance, coaching, and support.
Own and manage the team backlog, prioritizing operational work, improvements, and strategic initiatives.
Coordinate workload distribution and ensure balanced on-call and operational responsibilities.
Act as the primary point of contact for MongoDB / distributed databases related topics across engineering, SRE, and platform teams.
Drive continuous improvement in monitoring, automation, reliability, and operational maturity.
Support team growth through knowledge sharing, documentation, and skill development.
Promote a culture of collaboration, accountability, and operational excellence.

What you will bring:

5+ years of experience working with large-scale distributed database systems, with strong focus on performance tuning and operations.
Proven hands-on experience with MongoDB Atlas and Ops Manager / Percona operator.
Strong experience with MongoDB high availability strategies, including replica sets and sharding.
Solid operational understanding of NoSQL data modeling.
Deep knowledge of database performance, scalability concepts, and tuning best practices.
Experience with backup, recovery, and disaster recovery design.
Ability to write and maintain Unix/Linux shell scripts is a strong advantage.
Experience with RDBMS platforms (MS SQL Server, PostgreSQL) is considered a plus.
Bachelor’s degree in Engineering or equivalent practical experience.
Highly self-motivated, able to work independently and as part of a team in a fast-paced, high-demand environment.
Strong written and verbal communication skills.
Comfortable collaborating across teams and organizational boundaries.

Infrastructure & Platform Exposure

As some of our MongoDB and CockroachDB platforms already run on Kubernetes (OpenShift), the role requires:

Working-level familiarity with Linux environments.
Basic hands-on exposure to Kubernetes/OpenShift concepts.
Understanding of Infrastructure-as-Code tools such as Ansible and Terraform.
Ability to understand deployments, troubleshoot issues, and collaborate effectively with SRE / Platform teams.
Experience operating databases in containerized environments.

Database Administrator Team Lead

IT & Infrastructure

Athens, Greece