IT-specialist

Oskar Paarhuis

About me

Oskar Paarhuis is an experienced network equipment specialist with more than 14 years of industry expertise. As Supervisor of the testing engineers team at Qualified Networks, he is responsible for checking and assessing switches, routers and other network hardware.
His career began in 2009 at a renowned IT equipment reuse and certification company. For almost 14 years, he worked on testing and optimising network equipment, with a strong focus on quality and reliability.

Since 2023, Oskar has continued his expertise at Qualified Networks, where he focuses on the safe and sustainable processing of IT equipment. His focus on quality and sustainability makes him an indispensable link in delivering reliable solutions for businesses.

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Knowledge base

Written Articles

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Third Party Maintenance: Save on IT maintenance without sacrificing quality

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The IT department is full of old hardware: how do you get rid of it quickly and safely?

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Refurbished networking equipment: quality and reliability guaranteed

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Worry-free data center decommissioning: how Qualified Networks handles it professionally

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Cisco and HP network equipment with short delivery time

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Buying IT hardware

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works.

about us

Why choose Qualified Networks?

Do you want to sell your old IT equipment? Or do you want to buy refurbished or new IT equipment? Then choose Qualified Networks. You will be personally assisted by our specialists, so you can make the best choice from all the equipment we offer. In addition, you can get help configuring your new IT equipment and deleting the data on your old equipment.

More about us

Sharpest prices purchase & sale
Both for the purchase and sale of IT equipment you will always receive or pay a competitive price.
Delivery often within 24 hours
You often receive your purchased IT equipment within 24 hours. So you can get started with your equipment in no time.
Certified data removal
Sensitive corporate data is removed from your IT equipment in a certified manner. This ensures that your sensitive business data is safely and 100% deleted.
Lifetime warranty on your equipment
Is your IT equipment not working properly? Thanks to our lifetime warranty, we’ll make sure your IT equipment is working properly again.
Entire logistics process taken care of
Perhaps you don’t have the time or resources to bring or pick up your IT equipment yourself. That’s why we arrange the entire logistics process for you.

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Our Customers

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Qualified Networks

4.6

Based on 11 reviews

We normally throw away all old hardware and have our data carriers destroyed for a lot of money." And this while Qualified Networks can still give law firms thousands of dollars for their old IT equipment. In addition, all data carriers are certified erased giving a law firm a 100% guarantee that all data has been deleted according to the... Read more

Law firms

We use switches to ensure that their wired network can be extended to connect different equipment." Qualified Networks helped a large fruit merchant with refurbished switches. In addition to the favorable prices, the big fruit dealer was satisfied with the quality of our IT equipment and the lifetime warranty they received with it. All equipment was delivered within a week to all 27 branches of this big fruit... Read more

Large fruit merchants

We need transceivers / SFPs to send and receive data." Qualified Networks was able to arrange this for a hospital at a substantial discount. We have realized this within 2 days. Besides the fact that the transceivers / SFP's were delivered quickly, the hospital also saved tens of thousands of euro's. Thanks to this huge saving, they had the opportunity to purchase additional... Read more

Hospitals

We were looking for a few hundred Cisco routers that Cisco might not be able to deliver for another 9 months." Qualified Networks was called in to see if it could still be realized sooner. We succeeded! Within 1,5 week we were able to deliver everything to the different branches of this retailer. The customer was completely relieved and didn't experience any problems with delivery and the shortage many companies are currently dealing... Read more

A major international retailer

We used to hand in our old IT equipment to the vendor for a fee." Qualified Networks suggested that we bid along for once. And as it turned out, we bid more than 50% higher than the obtained trade-in value. We neatly worked everything out in a contract. We included the fact that data wiping is very important. The best part of this project was that we were able to return some nice laptops for children who don't have the budget for a... Read more