Walter Koper
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Walter Koper Email & Phone Number

Teamlead Systeembeheer at YER
Location: Amsterdam, North Holland, Netherlands 3 work roles 1 school
1 work email found @nba.nl 2 phones found area 120 LinkedIn matched
✓ Verified May 2026 4 data sources Profile completeness 100%

Contact Signals · 1 work email · 2 phones

Work email w****@nba.nl
Direct phone (120) ***-****
LinkedIn Profile matched
3 free lookups remaining · No credit card
Current company
YER
Role
Teamlead Systeembeheer
Location
Amsterdam, North Holland, Netherlands
Company size
1551 employees

Who is Walter Koper? Overview

A concise factual answer block for searchers comparing this professional profile.

Quick answer

Walter Koper is listed as Teamlead Systeembeheer at YER, a company with 1551 employees, based in Amsterdam, North Holland, Netherlands. AeroLeads shows a work email signal at nba.nl, phone signal with area code 120, and a matched LinkedIn profile for Walter Koper.

Walter Koper previously worked as sr. Technisch Systeembeheerder at Nederlandse Beroepsorganisatie Van Accountants (Nba) and sr. technisch Systeembeheerder at Nba. Walter Koper studied at Obs De Where.

Company email context

Email format at YER

This section adds company-level context without repeating Walter Koper's masked contact details.

{first_initial}{last}@nba.nl
76% confidence

AeroLeads found 1 current-domain work email signal for Walter Koper. Compare company email patterns before reaching out.

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Profile bio

About Walter Koper

Walter Koper is a Teamlead Systeembeheer at YER. He possess expertise in active directory, vmware esx, lync 2010, windows server, windows 2008 r2 and 14 more skills.

Listed skills include Active Directory, Vmware Esx, Lync 2010, Windows Server, and 15 others.

Current workplace

Walter Koper's current company

Company context helps verify the profile and gives searchers a useful next step.

YER
Yer
Teamlead Systeembeheer
Amsterdam, NH, NL
Website
yer.nl
Employees
1551
AeroLeads page
Company profile
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3 roles · 34 years

Walter Koper work experience

A career timeline built from the work history available for this profile.

Teamlead Systeembeheer

Yer

Amsterdam, NH, NL

Sr. Technisch Systeembeheerder

Current
Nederlandse Beroepsorganisatie Van Accountants (Nba)

Azure ADExchange OnlineIntuneVMware Horizon VDIFortiNet: FortiwWeb, Fortigate en FortiswitchMS Teams (ook bellen vis PSTN)/Sharepoint/OneDriveWindows serverActive Directory (migatie)PowerShellExchange 2003Exchange 2010Exchange 2016Microsoft Navision 2009Microsoft Navision 2016 (migratie van v2009 naar v2016, multi-tenant)Microsoft Office Communicator 2007.

1992 - Present ~34 yrs 4 mos

Sr. Technisch Systeembeheerder

Current
Nba

Amsterdam

1992 - Present ~34 yrs 4 mos
Team & coworkers

Colleagues at YER

Other employees you can reach at yer.nl. View company contacts for 1551 employees →

LS Lena Silva Lena Silva Colleague at Yer Redlands, California, United States, United States View → MR Maaike Rietveld Maaike Rietveld Colleague at Yer Venlo, Limburg, Netherlands, Netherlands View → LS Lena Sammler Lena Sammler Colleague at Yer Lausanne Metropolitan Area, Switzerland View → CT Celine Te Velde Celine Te Velde Colleague at Yer Groningen, Groningen, Netherlands, Netherlands View → MY Michael Yntema Michael Yntema Colleague at Yer Amsterdam, North Holland, Netherlands, Netherlands View → MG Minire Gülen Minire Gülen Colleague at Yer Leiden, South Holland, Netherlands, Netherlands View → JV Jan Van Genderen Jan Van Genderen Colleague at Yer Sappemeer, Groningen, Netherlands, Netherlands View → RA Reza Alfareiza Reza Alfareiza Colleague at Yer Indonesia, Indonesia View → MS Moazema Siawoshani Moazema Siawoshani Colleague at Yer Arnhem, Gelderland, Netherlands, Netherlands View → RG René Groesbeek René Groesbeek Colleague at Yer Dordrecht, South Holland, Netherlands, Netherlands View →
1 education record

Walter Koper education

  • Obs De Where
    Obs De Where
FAQ

Frequently asked questions about Walter Koper

Quick answers generated from the profile data available on this page.

What company does Walter Koper work for?

Walter Koper works for YER.

What is Walter Koper's role at YER?

Walter Koper is listed as Teamlead Systeembeheer at YER.

What is Walter Koper's email address?

AeroLeads has found 1 work email signal at @nba.nl for Walter Koper at YER.

What is Walter Koper's phone number?

AeroLeads has found 2 phone signal(s) with area code 120 for Walter Koper at YER.

Where is Walter Koper based?

Walter Koper is based in Amsterdam, North Holland, Netherlands while working with YER.

What companies has Walter Koper worked for?

Walter Koper has worked for Yer, Nederlandse Beroepsorganisatie Van Accountants (Nba), and Nba.

Who are Walter Koper's colleagues at YER?

Walter Koper's colleagues at YER include Lena Silva, Maaike Rietveld, Lena Sammler, Celine Te Velde, and Michael Yntema.

How can I contact Walter Koper?

You can use AeroLeads to view verified contact signals for Walter Koper at YER, including work email, phone, and LinkedIn data when available.

What schools did Walter Koper attend?

Walter Koper studied at Obs De Where.

What skills is Walter Koper known for?

Walter Koper is listed with skills including Active Directory, Vmware Esx, Lync 2010, Windows Server, Windows 2008 R2, Juniper Firewalls, Bluecoat Proxy, and Openedge Webspeed Webservices.

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