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Jan Willem Van Markus Email & Phone Number
Senior Lead Developer
at
Klaverblad Verzekeringen
LinkedIn matched
✓ Verified Jun 2026
3 data sources
Profile completeness 100%
Current company
Role
Senior Lead Developer
Location
Hillegom, South Holland, Netherlands
Company size
Who is Jan Willem Van Markus? Overview
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Quick answer
Jan Willem Van Markus is listed as Senior Lead Developer at Klaverblad Verzekeringen, a company with 444 employees, based in Hillegom, South Holland, Netherlands. AeroLeads shows a matched LinkedIn profile for Jan Willem Van Markus.
Jan Willem Van Markus previously worked as Senior Developer at Klaverblad Verzekeringen and Senior Full Stack Developer at Sdb Groep. Jan Willem Van Markus holds Bachelor Of Information And Communication Technology, Information Technology from De Haagse Hogeschool / The Hague University Of Applied Sciences.
Company email context
Email format at Klaverblad Verzekeringen
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Klaverblad Verzekeringen
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Profile bio
About Jan Willem Van Markus
Jan Willem Van Markus is a Senior Lead Developer at Klaverblad Verzekeringen. They possess expertise in software development, javascript, web applications, xml, ajax and 34 more skills. They is proficient in Dutch, English and German. Colleagues describe them as "Jan Willem is a hard-working, engaged, enthusiastic colleague. It was nice working with him. He is helpful and likes to cooperate. His contribution is high level, because he is smart. Fortunately you can also have fun with him"
Listed skills include Software Development, Javascript, Web Applications, Xml, and 35 others.
Current workplace
Jan Willem Van Markus's current company
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Klaverblad Verzekeringen
5 roles · 27 years
Jan Willem Van Markus work experience
A career timeline built from the work history available for this profile.
Senior Developer
Current
Jan 2024 - Present
Senior Full Stack Developer
CurrentLed the technical direction of the DevOps team to optimize and develop the SDB planning application. Played an active role in transitioning from an external to an internal team. Addressed delayed Java maintenance, revised the build pipeline, and created new export/report options. Developed integrations with other SDB applications. Actively engaged in.
Nov 2019 - Present
Owner
Current
Van Markus Software Consultancy
This is my company, I own it.
Jul 2002 - Present
Senior Full Stack Developer
CurrentDeveloped multiple applications based on HCL DominoCLAUS: Lab information system which connects to almost all hospitals in the Netherlands to exchange blood test results with several different hospital lab systems.TRIX: System to store Irregular antibodies, which can be accessed within all hospitals in the Netherlands by Web interface and web.
1999 - Present
~27 yrs 5 mos
Team & coworkers
Colleagues at Klaverblad Verzekeringen
Other employees you can reach at klaverblad.nl. View company contacts for 444 employees →
YV
Yelmar Van Der Veer
Colleague at Klaverblad VerzekeringenThe Randstad, Netherlands, Netherlands
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AN
Annemiek Nieuwerkerk
Colleague at Klaverblad VerzekeringenLeidschendam, South Holland, Netherlands, Netherlands
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KC
K Coot
Colleague at Klaverblad VerzekeringenSouth Holland, Netherlands, Netherlands
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RB
Roland Broekhuisen
Colleague at Klaverblad VerzekeringenZoetermeer, South Holland, Netherlands, Netherlands
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LD
Larissa Darázsdi
Colleague at Klaverblad VerzekeringenThe Hague, South Holland, Netherlands, Netherlands
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MM
Madhavi Madarie
Colleague at Klaverblad VerzekeringenThe Hague, South Holland, Netherlands, Netherlands
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SE
Steef En Jolanda
Colleague at Klaverblad VerzekeringenAmsterdam, North Holland, Netherlands, Netherlands
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NP
Nikita Plomp
Colleague at Klaverblad VerzekeringenThe Hague, South Holland, Netherlands, Netherlands
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MN
Martijn Naber
Colleague at Klaverblad VerzekeringenThe Hague, South Holland, Netherlands, Netherlands
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KR
Kevin Rugers
Colleague at Klaverblad VerzekeringenThe Hague, South Holland, Netherlands, Netherlands
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Yelmar Van Der Veer
Colleague at Klaverblad VerzekeringenThe Randstad, Netherlands, Netherlands
View →
AN
Annemiek Nieuwerkerk
Colleague at Klaverblad VerzekeringenLeidschendam, South Holland, Netherlands, Netherlands
View →
KC
K Coot
Colleague at Klaverblad VerzekeringenSouth Holland, Netherlands, Netherlands
View →
RB
Roland Broekhuisen
Colleague at Klaverblad VerzekeringenZoetermeer, South Holland, Netherlands, Netherlands
View →
LD
Larissa Darázsdi
Colleague at Klaverblad VerzekeringenThe Hague, South Holland, Netherlands, Netherlands
View →
MM
Madhavi Madarie
Colleague at Klaverblad VerzekeringenThe Hague, South Holland, Netherlands, Netherlands
View →
SE
Steef En Jolanda
Colleague at Klaverblad VerzekeringenAmsterdam, North Holland, Netherlands, Netherlands
View →
NP
Nikita Plomp
Colleague at Klaverblad VerzekeringenThe Hague, South Holland, Netherlands, Netherlands
View →
MN
Martijn Naber
Colleague at Klaverblad VerzekeringenThe Hague, South Holland, Netherlands, Netherlands
View →
KR
Kevin Rugers
Colleague at Klaverblad VerzekeringenThe Hague, South Holland, Netherlands, Netherlands
View →
1 education record
Jan Willem Van Markus education
FAQ
Frequently asked questions about Jan Willem Van Markus
Quick answers generated from the profile data available on this page.
What company does Jan Willem Van Markus work for?
Jan Willem Van Markus works for Klaverblad Verzekeringen.
What is Jan Willem Van Markus's role at Klaverblad Verzekeringen?
Jan Willem Van Markus is listed as Senior Lead Developer at Klaverblad Verzekeringen.
Where is Jan Willem Van Markus based?
Jan Willem Van Markus is based in Hillegom, South Holland, Netherlands while working with Klaverblad Verzekeringen.
What companies has Jan Willem Van Markus worked for?
Jan Willem Van Markus has worked for Klaverblad Verzekeringen, Sdb Groep, Van Markus Software Consultancy, and Sanquin.
Who are Jan Willem Van Markus's colleagues at Klaverblad Verzekeringen?
Jan Willem Van Markus's colleagues at Klaverblad Verzekeringen include Yelmar Van Der Veer, Annemiek Nieuwerkerk, K Coot, Roland Broekhuisen, and Larissa Darázsdi.
How can I contact Jan Willem Van Markus?
You can use AeroLeads to view verified contact signals for Jan Willem Van Markus at Klaverblad Verzekeringen, including work email, phone, and LinkedIn data when available.
What schools did Jan Willem Van Markus attend?
Jan Willem Van Markus holds Bachelor Of Information And Communication Technology, Information Technology from De Haagse Hogeschool / The Hague University Of Applied Sciences.
What skills is Jan Willem Van Markus known for?
Jan Willem Van Markus is listed with skills including Software Development, Javascript, Web Applications, Xml, Ajax, Web Services, Agile Methodologies, and Dojo.
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