Company Profile and background

HAC Maarssen was founded in May 1991 by René Hartman. Its official full company name is R.H. Hartman Automatiserings Consultancy and its primary activity is providing support and advice for the Dutch eserver iSeries user community. The company is registered with the Chamber of Commerce in Utrecht.

Before establishing a private IT Consultancy firm, René spent over ten years in computer service and office automation, starting out as a customer engineer in the days that computer systems still required quarterly maintenance to keep them running. Timely cleaning of disk drive heads and replacement of absolute filters was a common task then and PC’s were non-existent, which goes to show what a long way the IT industry has come in a short time. After getting involved in service management, René's attention turned toward automating as much of the related processes as possible (and economically viable) in order to maintain a high standard of quality in call-tracking and follow-up. This was also the period René found he was better at translating error-prone, repetitive processes into automated, structured solutions than at managing people.

When HAC Maarssen was founded, it initially thrived on its knowledge of the AS/400, PC networks, various operating systems and programming fundamentals. That knowledge has shifted to the linux domain but the ability to deliver future-proof, maintainable solutions while utilising a client’s existing infrastructure has been preserved. Its general understanding of how to implement automation in organisations in order to make daily operation more efficient enabled HAC Maarssen to build up a short but rather impressive list of satisfied customers.

Today, the success behind HAC Maarssen is still that ability to use automation as a tool, rather than as an objective, with spot-on analysis of problem area and advice on efficient and structured, yet quick and cost-effective solutions. Recently, among other things, we've been instrumental in enabling a runaway project to successfully make its deadline, preventing reputation damage by quickly turning a crisis around before its effects could reach the general public and restructuring an environment which had become unmaintainable due to Q&D coding and lack of quality control.

That ability, combined with general knowledge on (inter-) networking, the various Windows varieties, Linux, SQL, noSQL, PKI and programming, combined with our troubleshooting capabilities, causes our clients to be pleased with our price-performance ratio as well. Sometimes, they even saved more than they paid. The customer comes first, and the buzzwords are: quality and versatility.

Should you have become curious as to what HAC Maarssen can do for your organisation, please don’t hesitate to contact us at

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