Senior MySQL Performance & Scalability Engineer

Dyflexis; Den Haag; On-site; EUR 66,000 - 79,000; Full time

Benefits offered by this job

Personal development budget

Vacation days

In-house chef

Company events

Travel allowance

WFH compensation

Job summary

Dyflexis, based in the Netherlands, is seeking a MySQL Expert to ensure our database remains fast, stable, and scalable as we grow across clusters and continents.

You'll work with the Platform and development teams to optimize queries, run migrations (Atlas), and shape data infrastructure from data modelling to migrations. Excellent English and strong database discipline are essential for success.

Qualifications

• 5+ years as a database engineer (MySQL) on large/complex databases.
• Experience in fintech, HR tech, SaaS, or ticketing platforms is a plus.
• Deep expertise in MySQL with solid experience in at least one other DBMS (Postgres/Oracle/MSSQL).
• Familiarity with PHP to read/review queries.

Responsibilities

• Own production database performance: review queries, indexing, and execution plans using MySQL.
• Run migrations across database clusters, including Atlas.
• Improve and evolve our database infrastructure with scaling strategies like sharding/partitioning.
• Write and maintain standards for database work across teams, from data modelling to migrations.
• Handle regular database maintenance, monitoring, mutations, and schema changes.
• Review merge requests and PHP code for DB touch and participate in project kick-offs.

Skills

MySQL

PHP

English communication

Tools

MySQL

PostgreSQL

Oracle

MSSQL Server

Job description

Dyflexis, based in the Netherlands, is seeking a MySQL Expert to ensure our database remains fast, stable, and scalable as we grow across clusters and continents.

You'll work with the Platform and development teams to optimize queries, run migrations (Atlas), and shape data infrastructure from data modelling to migrations. Excellent English and strong database discipline are essential for success.