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# Senior Database Administrator

- **Company:** Dyflexis
- **Location:** Den Haag, Netherlands (Remote available)
- **Experience:** Expert
- **Salary:** €6,500.0
- **Contract:** Permanent contract
- **Skills:** PHP (Programming Language), Adaptable Database Systems, Software as a Service, Databases, Data Infrastructure, PostgreSQL, Microsoft SQL Server, MySQL, Operational Databases, Oracle (Applications), Indexer
- **Published:** September 1, 2026
- **Apply:** https://nl.indeed.com/viewjob?jk=f838f5b09ade4421

## About the Role

* 5+ years of experience as a database administrator or database engineer, ideally across large or complex databases.
 * Experience in fintech, HR tech, SaaS, or ticketing and ordering platforms is a plus. A relevant certification helps too, though it's not a requirement.
 * Deep expertise in MySQL, with solid experience in at least one other Database Management System. Postgres, Oracle, or MSSQL Server are all a plus.
 * Familiarity PHP skills, enough to read and review how developers write queries and loops.
 * Excellent written and spoken English. You can communicate clearly enough so that there's no room for misinterpretation.

## Description

You're responsible for the performance, stability, and scalability of our database infrastructure, spread across multiple clusters. You'll review and optimise queries, oversee migrations, and make sure our infrastructure keeps up as we grow, all while raising the bar on how we manage data internally. You'll work closely with our Platform team, and with developers directly to make sure the database side is considered from the start.

 * Own production database performance: review and optimize queries, indexing, and execution plans using MySQL and ProxySQL.
 * Run migrations across our database clusters, including working with Atlas.
 * Improve and evolve our database infrastructure, including scaling strategies like sharding and partitioning, as we restructure how our systems are set up.
 * Write and maintain the standards that keep database work consistent across teams, from data modelling to how migrations get done.
 * Handle regular database maintenance, from monitoring and mutations to schema changes.
 * Review merge requests and PHP code for how they touch the database and join project kick-offs to shape the database approach early.