Senior Systems Officer Network Security
CurrentSenior systems officer at the department Network Security
Nov 2008 - Present
AeroLeads people directory · profile
Jack Leonard Email & Phone Number
Owner bij Infinite Communications
at
ASR Nederland
1 work email found
@asr.nl
LinkedIn matched
✓ Verified May 2026
4 data sources
Profile completeness 100%
Current company
Role
Owner bij Infinite Communications
Location
The Randstad, Netherlands, Netherlands
Company size
Who is Jack Leonard? Overview
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Quick answer
Jack Leonard is listed as Owner bij Infinite Communications at ASR Nederland, a company with 3750 employees, based in The Randstad, Netherlands, Netherlands. AeroLeads shows a work email signal at asr.nl and a matched LinkedIn profile for Jack Leonard.
Jack Leonard previously worked as Senior Systems Officer network security at Asr Nederland and Owner at Infinite Communications. Jack Leonard holds Cissp, General Security from Isc2 - Cissp.
Company email context
Email format at ASR Nederland
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{first}.{last}@asr.nl
89% confidence
AeroLeads found 1 current-domain work email signal for Jack Leonard. Compare company email patterns before reaching out.
Profile bio
About Jack Leonard
Experienced Senior System Officer with a demonstrated history of working in the insurance industry. Skilled in VMware ESX, ITIL, Windows Server, Networking, and Infrastructure. Strong information technology professional with a CCNP security track focused in Network security from Cisco ASA specialist.
Listed skills include Network Security, Security, Tcp/Ip, Windows Server, and 13 others.
Current workplace
Jack Leonard's current company
Company context helps verify the profile and gives searchers a useful next step.
Asr Nederland
7 roles · 25 years
Jack Leonard work experience
A career timeline built from the work history available for this profile.
Owner
Current
Infinite Communications
Naast mijn vierdaagse werkweek ontwikkel ik websites, waarbij de focus vooral ligt op technieken zoals, HTML, javascript, css, php en mysql. Ik werk vaak samen met een goede vriend die een reclamebureau heeft en een genie qua vormgeving is. Samen een ijzersterke combinatie.
2001 - Present
~25 yrs 4 mos
Network Security Officer
Currently focusing on security of the network infrastructure Benelux wide.
Apr 2002 - Nov 2008
Technical Specialist Infrastructure
Network engineer mainly invloved in building new infrastructures.
Apr 2002 - Apr 2007
System Engineer
Stad Rotterdam
System engineering focused on maintaining en implementing Window Servers. Participated in several migration projects like workstations, mailenvironments. Keywords: Windows server, exchange, SMS.
Apr 2000 - Mar 2002
Network Specialist
Xirius B.V.
Did several small projects.
Mar 1999 - Mar 2000
Aug 1997 - Feb 1999
Team & coworkers
Colleagues at ASR Nederland
Other employees you can reach at asr.nl. View company contacts for 3750 employees →
FS
Femke Schepers
Colleague at Asr Nederland
Utrecht, Utrecht, Netherlands, Netherlands
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MB
Marga Bouman
Colleague at Asr Nederland
The Randstad, Netherlands, Netherlands
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DH
Dick Hegeman
Colleague at Asr Nederland
Rheden, Gelderland, Netherlands, Netherlands
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DP
Dennis Prevaes
Colleague at Asr Nederland
Amsterdam, North Holland, Netherlands, Netherlands
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KE
Kaoutar El Abbassi
Colleague at Asr Nederland
The Randstad, Netherlands, Netherlands
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GR
Gerda Roest
Colleague at Asr Nederland
Almere, Flevoland, Netherlands, Netherlands
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KT
Kim Temmink
Colleague at Asr Nederland
The Randstad, Netherlands, Netherlands
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ER
Elize Ringnalda
Colleague at Asr Nederland
Netherlands, Netherlands
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WP
Wendy Peekel
Colleague at Asr Nederland
Netherlands, Netherlands
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MS
Michiel Stalpers Ma
Colleague at Asr Nederland
Baarn, Utrecht, Netherlands, Netherlands
View →
Femke Schepers
Colleague at Asr Nederland
Utrecht, Utrecht, Netherlands, Netherlands
View →
MB
Marga Bouman
Colleague at Asr Nederland
The Randstad, Netherlands, Netherlands
View →
DH
Dick Hegeman
Colleague at Asr Nederland
Rheden, Gelderland, Netherlands, Netherlands
View →
DP
Dennis Prevaes
Colleague at Asr Nederland
Amsterdam, North Holland, Netherlands, Netherlands
View →
KE
Kaoutar El Abbassi
Colleague at Asr Nederland
The Randstad, Netherlands, Netherlands
View →
GR
Gerda Roest
Colleague at Asr Nederland
Almere, Flevoland, Netherlands, Netherlands
View →
KT
Kim Temmink
Colleague at Asr Nederland
The Randstad, Netherlands, Netherlands
View →
ER
Elize Ringnalda
Colleague at Asr Nederland
Netherlands, Netherlands
View →
WP
Wendy Peekel
Colleague at Asr Nederland
Netherlands, Netherlands
View →
MS
Michiel Stalpers Ma
Colleague at Asr Nederland
Baarn, Utrecht, Netherlands, Netherlands
View →
10 education records
Jack Leonard education
Cissp, General Security
Isc2 - Cissp
Certificaat
Zscaler Cloud Transformation Specialist (Zcts)
Ccnp Security Track, Network Security, Certificates
Cisco Asa Specialist
Ccnp, Cisco Routing, Switchting, Ras, Voip And Qos
Cisco - Ccnp
Internet Security
Ccna, Cisco Basics
Cisco - Ccna
Mcse - Nt4, Microsoft Nt4 Certification
Mcse-Nt4
Education record
Mmo
Mavo, General Education
Juliana Mavo
Education record
Free Golf
FAQ
Frequently asked questions about Jack Leonard
Quick answers generated from the profile data available on this page.
What company does Jack Leonard work for?
Jack Leonard works for ASR Nederland.
What is Jack Leonard's role at ASR Nederland?
Jack Leonard is listed as Owner bij Infinite Communications at ASR Nederland.
What is Jack Leonard's email address?
AeroLeads has found 1 work email signal at @asr.nl for Jack Leonard at ASR Nederland.
Where is Jack Leonard based?
Jack Leonard is based in The Randstad, Netherlands, Netherlands while working with ASR Nederland.
What companies has Jack Leonard worked for?
Jack Leonard has worked for Asr Nederland, Infinite Communications, Fortis, Fortis Asr, and Stad Rotterdam.
Who are Jack Leonard's colleagues at ASR Nederland?
Jack Leonard's colleagues at ASR Nederland include Femke Schepers, Marga Bouman, Dick Hegeman, Dennis Prevaes, and Kaoutar El Abbassi.
How can I contact Jack Leonard?
You can use AeroLeads to view verified contact signals for Jack Leonard at ASR Nederland, including work email, phone, and LinkedIn data when available.
What schools did Jack Leonard attend?
Jack Leonard holds Cissp, General Security from Isc2 - Cissp.
What skills is Jack Leonard known for?
Jack Leonard is listed with skills including Network Security, Security, Tcp/Ip, Windows Server, Infrastructure, Information Security Management, Networking, and Microsoft Exchange.
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