Senior Database Administrator (ClickHouse)

Stack

Responsibilities

• ▹Own the reliability and performance of production ClickHouse clusters
• ▹Design a standard architecture and tooling that lets the fleet grow to dozens of multi-node clusters without operational work growing at the same pace
• ▹Manage the whole cluster lifecycle as code: provisioning, configuration, scaling, upgrades, and migrations
• ▹Build monitoring and alerting that catch problems before users notice them
• ▹Own backups and disaster recovery, and test restores regularly
• ▹Keep clusters secure by default
• ▹Plan capacity and keep infrastructure costs under control
• ▹Be the go-to ClickHouse person for developers, DevOps engineers, other DBAs, and engineering leadership, from schema design and data ingestion to query performance
• ▹Handle routine database requests and automate as many of them as possible
• ▹Step in during rare production emergencies, including outside business hours, then lead the database-side root-cause analysis and contribute to the postmortem
• ▹Keep documentation and runbooks up to date and share knowledge with the team

Requirements

• ▹Deep, DBA-level knowledge of ClickHouse from running it in production: how it stores, merges, replicates, and queries data, and why a cluster behaves as it does; includes strong SQL, optimising complex analytical queries and reviewing schema design
• ▹Ability to design architecture and automation that holds up across dozens of multi-node clusters
• ▹Production experience running stateful workloads on Kubernetes, well beyond the initial deployment
• ▹Production use of a Kubernetes operator to run databases (any engine, for example CloudNativePG, Zalando Postgres Operator, Altinity, or the official ClickHouse operator)
• ▹Experience with version upgrades, backup and restore, and migrating large datasets between clusters or regions with zero or minimal downtime
• ▹Strong troubleshooting skills across the whole stack, from queries and schema design down to Kubernetes, Linux, storage, and networking
• ▹A proactive approach to database health: monitoring and alerting built with a modern observability stack
• ▹Database security in practice: encryption in transit and at rest, access control, and secrets management
• ▹Infrastructure as code with any mainstream tool, plus at least one programming or scripting language for automation
• ▹Hands-on experience with cloud infrastructure on any major provider
• ▹Clear written and spoken communication with engineers and leadership; able to take a problem from investigation to production fix on your own

Nice to have

• ▹Hands-on work on the source code of a Kubernetes operator for databases, as a developer or contributor
• ▹Practical use of AI tools for database observability or for automating routine operational tasks
• ▹A background in highly regulated environments
• ▹Any Kubernetes or cloud certifications
• ▹Experience running a large fleet of databases (dozens or hundreds of instances), the engine does not have to be ClickHouse

Soft skills

What we offer

• ▹Full-time B2B contract
• ▹Fully remote setup
• ▹Up to 20% tax allowance
• ▹22 paid leave days annually
• ▹Stock options (ESOP) in a fast-scaling, pre-IPO company
• ▹Flexi benefits for wellness, travel, or learning
• ▹International, high-performing engineering team
• ▹Relocation support to hubs in Armenia, Georgia, Serbia, Portugal, Poland and Spain, including flights, temporary accommodation, and legal setup

About the company

Tabby reshapes how people shop, earn and save: over 25 million users and more than 70,000 brands use it to split payments with no interest or fees. It is the largest and fastest-growing FinTech in the GCC region, launched in 2019.