We are looking to extend our B2C team with a Principal Database Administrator. Based either in our Sofia or in our new Barcelona office, you will be the most senior operational authority over our data infrastructure across our European hubs. This is a role for a highly experienced, hands‐on database professional who has spent years keeping large, high‐throughput, 24/7 production databases alive, healthy, and fast.

You will own the stability, performance, and security of our clusters day to day, while driving the operational execution of a major cleanup, upgrade, and cloud migration initiative. The technology currently in use is MySQL (Percona XtraDB Cluster and MariaDB), running multi‐terabyte, multi‐node clusters serving live players around the clock. You'll be joining a friendly and open‐minded team with an informal attitude and a high level of cooperation.

Production Ownership: Act as the ultimate operational owner of our Percona XtraDB Cluster (Galera) and MariaDB environments — a ~22TB estate supporting a 24/7 platform where availability and operational resilience are critical. Work closely with the DB specialists of the company currently hosting and administering our bare‐metal servers in Netherlands.

Percona

XtraDB Cluster 5.7 → 8.4) using rolling, zero‐downtime strategies, with rigorous rollback planning.

Cloud Execution: Drive the hands‐on execution of our data migration to Amazon Web Services (AWS), including continuous replication pipelines, and hybrid on‐prem/cloud topologies.

Data Lifecycle & Cleanup:



Design and run large‐scale data trimming, partitioning, and archival — online schema migrations on billion‐row tables without disrupting live traffic.

Performance Tuning: Diagnose deep engine‐level bottlenecks — InnoDB internals, buffer pool behavior, Galera flow control, lock contention, query execution plans, and indexing strategy.

High Availability & DR: Establish and battle‐test disaster recovery plans, backup/restore procedures, failover behavior, and replication health across primary clusters and read replicas. Implement encryption at rest and in transit, audit logging, and access controls to meet strict regulatory requirements.

Automation & Monitoring: Partner with and level up development and infrastructure teams across Bulgaria, Netherlands and Malta, enforcing modern data operational standards and best practices.

Experience: 15+ years of hands‐on production database administration, or equivalent depth of experience, with a track record of owning large, mission‐critical, high‐availability environments. Extensive experience with MySQL and MariaDB in production — including Percona XtraDB Cluster / Galera at multi‐terabyte scale.



Genuine understanding of InnoDB internals, replication mechanics, cluster behavior, and how the database behaves under real production stress.

Upgrades & Zero‐Downtime Ops: Proven experience executing major version upgrades and online schema changes on live systems without unplanned downtime.

Cloud Depth: Strong, hands‐on AWS experience including the real‐world limitations of managed database services, not just the happy path.

Strong

English language skills for seamless collaboration across international offices, and the judgment to communicate risk clearly to both engineers and leadership. Professional familiarity or expertise with PostgreSQL is highly valued. Maxwell, Debezium) and streaming pipelines into data warehouses (Databricks, BigQuery).

Experience operating databases on ZFS. BS/MS degree in Computer Science, Engineering or a related subject Private health insurance Social events for building strong relationships with colleagues LCKY Group brings together a portfolio of leading online casino brands - LuckyCasino, HappyCasino, FlaxCasino, Vera&John;, OneCasino and RoyalCasino - alongside its in‐house game studio, Swintt. The Group is home to a diverse and multiskilled workforce, based in a range of locations, including Malta, Stockholm, Sofia, Barcelona, Hoorn, Estepona, Gibraltar and Melilla.

The Group also operates in the B2B vertical through its in‐house game development studio, Swintt, which delivers high‐quality slot games to operators worldwide.

📌 Database Administrator / DBA - SSIS / SSRS (Barcelona)
🏢 LCKY Group
📍 Barcelona