Here are few publicly available references of my work and projects. 

PromInvest Bank

"I have worked together with David on virtualization of Bank's  IT services on Cisco UCS platform. All this time I have known David as a
real professional with a huge level of dedication to get the job done. I
consider David to be a valuable asset for any company as a person with vision, dedication and great experience in cloud technologies." 

Oleksiy Nagornyy

Telefonica O2

„In O2, we can honestly recommend David as the infrastructure consultant to data center infrastructure projects of any scale.

Vít Šubrt

Radio Free Europe / Radio Liberty

„I confirm that David Pašek works with RFE/RL during the project
of server virtualization. I can recommend David as the infrastructure
consultant to any data center project.“

Karel Černohouz

Head of Data Center at Unipetrol Group

„David is one of the best IT professionals I have ever met.
He has deep knowledge and experience with virtualization especially with
VMware, data storage and networking as well. David is the person who is
not able to say words like "It is not possible". He is really brilliant
all-around IT expert. It was a pleasure to work with him and I would
like to repeat the cooperation with him any time.“

Jiří Švepes

Founder & CEO MacSource/CompuSource

„With David "if?" is never a question. "How?" is a question - but never a show-stopper. His innovation is unstoppable. Working with him is a pleasure - you can see the wheels grinding as soon as he's presented with a dilemma...and believe me, he'll figure out a solution.“

Tony Hasek

Data Scientist

„We worked together at Czech On Line since it had ~ 25 employees. David was The database guru in charge of the customer data
and our information system. On top of his technical expertise, David has
got amazing social intelligence and business intuition that makes him
stand out of the crowd. I would be happy to work with David at any time and can highly recommend him.“

Václav Petříček