Senior Database Engineer – Scale MySQL & Clusters

Dyflexis; Den Haag; On-site; EUR 44,000 - 73,000; Full time

Benefits offered by this job

Salary up to €6,500/mo

Personal development budget

25 vacation days + birthday off

In-house chef lunch

Parties and trips

ARJ Training boxing gym

Pension plan and 8% holiday allowance

Travel allowance and WFH compensation

Friday chair massages

Job summary

Dyflexis in the Netherlands is seeking a Database Engineer to own the performance, stability and scalability of our database infrastructure across clusters. You’ll review queries, oversee migrations, and work with the Platform team to ensure the database is considered from the start.

Bring deep MySQL expertise, plus experience with another DBMS (PostgreSQL, Oracle or MSSQL). Fluent English is essential for cross‑team communication and documentation.

Qualifications

• 5+ years of experience as a database engineer, ideally across large or complex databases.
• Experience in fintech, HR tech, SaaS, or ticketing and ordering platforms is a +.
• Deep expertise in MySQL, with solid experience in at least one other DBMS (PostgreSQL/Oracle/MSSQL).
• Familiarity with PHP to read and review how developers write queries.
• Excellent written and spoken English.

Responsibilities

• 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.
• 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.

Skills

5+ years experience

English proficiency

Strong communication

Tools

MySQL

PostgreSQL

Oracle

MSSQL Server

PHP

Job description

Dyflexis in the Netherlands is seeking a Database Engineer to own the performance, stability and scalability of our database infrastructure across clusters. You’ll review queries, oversee migrations, and work with the Platform team to ensure the database is considered from the start.

Bring deep MySQL expertise, plus experience with another DBMS (PostgreSQL, Oracle or MSSQL). Fluent English is essential for cross‑team communication and documentation.