MySQL Expert

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

At Dyflexis, we help millions of employees worldwide with our workforce management software. From the bakery around the corner to international hotel and retail chains. The software is powerful, customer questions are diverse, and no two days are the same. You'll get to know the product inside out and contribute to something that's growing rapidly in more than 20 countries.

How do we do it? We work in a fast-paced environment with short communication lines. There are no unnecessary meetings and no politics. Our Focus? Ownership, clear communication, and getting things done together. We move quickly, learn by doing, and continuously improve. As our MySQL Expert, you’ll keep our complex database fast, stable, and ready to scale, while helping developers understand the impact of their queries on performance.

This is what you’ll do

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.
• 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.

This is what you’ll need

• 5+ years of experience as a database engineer (MySQL), 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.

What you'll get

At Dyflexis, you'll be part of an ambitious, energetic, and customer-focused team. We offer:

• Fixed salary up to €6,500 gross per month based on a 40-hour week (experience based).
• Personal development budget to level up your skills.
• 25 vacation days plus your birthday off in exchange for cake.
• An in-house chef surprising you daily with fresh lunch.
• The best parties, drinks and trips (Winter sports, Ibiza and more).
• Membership at ARJ Training boxing gym (home of champion Tarik and Levi Rigters).
• Solid pension plan and 8% holiday allowance.
• Buy or sell vacation days, you decide.
• Travel allowance and WFH compensation.
• Friday chair massages to kick off your weekend.