Martien de Kleijn

Hi, I'm Martien de Kleijn

A Hands-on IT professional with a passion for optimizing systems, solving problems, and getting things done. Based in Rotterdam, available for freelance projects.

Here's a bunch of companies I've helped along the way:

Intermax

Corporate, Healthcare, IT Provider, Public Sector

Lateral Blue

Corporate

Port of Rotterdam

Public Sector, Maritime

Axoft ICT & Telecom

IT Provider, Small Business

Centric Financial Solutions & Services

Corporate, Financial Services

Brightside Architects

Small Business

Koekela

Small Business

Generali Verzekeringsgroep

Corporate, Financial Services

The Offshore Partners

Maritime, Small Business

Servicepunt71 (Gemeente Leiden)

Public Sector

Rijkswaterstaat

Public Sector

HagaZiekenhuis

Healthcare, Public Sector

Delta N.V.

Corporate, Public Sector, Utilities

What I Love Doing

Leadership & Getting Things Done

Taking ownership as Product Owner or technical lead, driving projects forward, and ensuring things actually get done.

Project Management

Leading challenging projects from start to finish—migrations, upgrades, rollouts—with a focus on practical results.

Migrations & Optimization

Migrating, upgrading, and optimizing IT infrastructure—on-premises and in the cloud.

Automation

Automating routine tasks with tools like PowerShell, Ansible, and SCCM to save time and reduce errors.

Troubleshooting

Diving into tough technical issues and finding creative, lasting solutions that work.

Mentoring & Knowledge Sharing

Mentoring colleagues, sharing knowledge, and improving team processes to build stronger teams.

Stuck with an IT challenge or planning your next big project?

Let's team up and get it sorted—get in touch!

Contact