IT-specialist

Oskar Paarhuis

About me

Oskar Paarhuis is een ervaren specialist in netwerkapparatuur met meer dan 14 jaar expertise in de branche. Als Supervisor van het testing engineers-team bij Qualified Networks is hij verantwoordelijk voor de controle en beoordeling van switches, routers en andere netwerkhardware.
Zijn carrière begon in 2009 bij een gerenommeerd bedrijf in hergebruik en certificering van IT-apparatuur. Gedurende bijna 14 jaar werkte hij aan het testen en optimaliseren van netwerkapparatuur, met een sterke focus op kwaliteit en betrouwbaarheid.

Sinds 2023 zet Oskar zijn expertise voort bij Qualified Networks, waar hij zich richt op de veilige en duurzame verwerking van IT-apparatuur. Zijn focus op kwaliteit en duurzaamheid maakt hem een onmisbare schakel in het leveren van betrouwbare oplossingen voor bedrijven.

My links

Knowledge base

Written Articles

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Overtollige IT-hardware: waarom bijna elke organisatie te veel op de plank heeft

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Faillissement of bedrijfsovername: wat gebeurt er met de IT-hardware?

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Wat is je IT-hardware nog waard na 3 jaar? Boekwaarde versus marktwaarde

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Refurbished IT: feiten, fabels en misverstanden uitgelegd

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Waarom een tweede IT-leverancier geen overbodige luxe is

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Inkopen op prijs vs. inkopen op strategie: wat kost je meer?

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Het verschil tussen ‘gewoon refurbished’ en professioneel geteste enterprise IT

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IT-hardware op pallets in zakelijke opslagruimte

Refurbished IT en betrouwbaarheid: feiten versus aannames

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De verborgen risico’s van het bewaren van oude IT-apparatuur

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Wanneer is het juiste moment om IT-apparatuur te vervangen

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Wat gebeurt er écht met je data als je oude hardware verkoopt?

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Waarom wachten op levertijden van OEM’s terwijl je binnen 24 uur geleverd kunt krijgen?

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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’ll receive personalized assistance from our specialists, helping you make the best choice from all the equipment we offer. You can also get help configuring your new IT equipment and deleting the data from your old equipment.

More about us

Best prices purchasing & sales
You benefit from the best terms and conditions when purchasing and selling IT equipment. You get the highest residual value for your old hardware and pay a competitive price for refurbished equipment with a warranty.
CO₂ certificate: proof of sustainable contribution
With every circular IT solution, you’ll receive a CO₂ certificate. This demonstrates your emission reductions, contributing to transparency and sustainable business practices.
100% certified data wiping
We offer ISO 27001-certified data wiping that meets the strictest security standards. Your sensitive company data is completely and verifiably deleted.
A lifetime warranty on your equipment
Is your IT equipment not working properly? Thanks to our lifetime warranty, we’ll ensure your IT equipment works properly again.
Entire logistics process taken care of
You might not have the time or resources to deliver or collect your IT equipment yourself. That’s why we handle the entire logistics process for you, including an inventory if necessary!
Sustainability through circular IT
By reusing and responsibly recycling IT equipment, you reduce e-waste and extend the lifespan of hardware. This saves costs and reduces the environmental impact.

Countries active

Satisfied customers

Reused IT products

REVIEWS

Our customers

Rate us:

Qualified Networks

4.6

Based on 11 reviews

M (MvdL)

2 years ago

Very good service, nice guys! The transaction also went very smoothly.

Myrthe Gellvoet

2 years ago

We had old IT hardware purchased by Qualified Networks and our data carriers certified for data wiping. The service was fast and professional. Our old devices were sustainably processed, and the new hardware was delivered very quickly in top quality. A reliable and environmentally conscious choice – definitely recommended!

Holland Recycling B.V.

2 years ago

Holland Recycling experiences the collaboration with Qualified Networks as very positive. Qualified Networks is a reliable company that keeps its agreements and communication is extremely pleasant!

Ronny Schönecker

2 years ago

You want an easy and trustful Business relationship? Ask Qualified Networks. Always easy and straight forward with Camiel and his Team.

Bart Heijen

3 years ago

Continue to contact us even though it has already been indicated 5 times that we are not interested.

Rochus Offerman

4 years ago

Very very fast. Great services

Karim Mahrous

4 years ago

Great service, affordable and as good as new products!

Sana Sarkawt

4 years ago

Still very happy with the service! Been a satisfied customer for years and recently had another great experience. We had our old IT hardware, including servers, switches and laptops, purchased. Everything was handled professionally and the data deletion was properly certified. The team was knowledgeable, fast and reliable. Definitely recommended for anyone looking for a safe and efficient solution for old hardware!

Nazar Mazur

4 years ago

Good service and fast delivery!

Berend Ruijs

4 years ago

Great service!

Giovanni Gruter

4 years ago

Very happy with the service provided.

Mick Zwolle

6 years ago

I have been buying all our network and storage equipment from Qualified Networks for a long time now and I am always positively surprised by the quality but also the price! It is also always delivered very quickly!