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$17 USD / hour
Bandeira do(a) UNITED STATES
$17 USD / hour
Atualmente, está 7:18 AM aqui
Ingressou em junho 16, 2008
0 Recomendações

Johannes V.

@mtsiv11

5,0 (13 avaliações)
6,1
6,1
100%
100%
$17 USD / hour
Bandeira do(a) UNITED STATES
$17 USD / hour
100%
Trabalhos Concluídos
100%
Dentro do Orçamento
100%
No Prazo
30%
Taxa de Recontratação

Highly motivated architect/engineer with extensive experience in various development technologies.

Highly motivated architect/engineer with extensive experience in various development technologies. Hardworking, self-starter with excellent analytically, problem-solving, and communication skills. Over twenty years of experience in software design and development. Summary of qualifications: - Architects solutions in agile development environments - Deep understanding of technology with focus on delivering business solutions. - Develops high performance applications - Externalizes configuration and business logic to ease client software implementations - Expertise in full project life cycle development including implementation and integration. - Leverages open-source software by implementing and extending well-known tools and frameworks

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Avaliações

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Mostrando 1 - 5 de 10 avaliações
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5,0
$8.331,77 USD
Excellent freelancer! [11 May, 2016] Excellent freelancer - great communication, thorough work. [30 August, 2016] Great job as always. [10 January, 2017] Johan was useful with running the site, and doing day to day project management. Highly recommended!
PHP
Windows Desktop
Project Management
Engineering
Mobile App Development
+1 mais
B
Bandeira do(a) bluethumbau
@bluethumbau
•
há 7 anos
5,0
$600,00 USD
Outstanding work. Very fast, technically brilliant. Really knows his stuff. Excellent communication.
JavaScript
Chrome OS
jQuery / Prototype
Firefox
Google Chrome
Avatar do Usuário
Bandeira do(a) Paul B.
@pageonetraffic
•
há 9 anos
5,0
$114,00 USD
great job again!
System Admin
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Bandeira do(a) Robert Spann C.
@jwrangler
•
há 9 anos
5,0
$800,00 USD
This project could be the bases as an epic novel or a opus on the development process and how difficult it can be yet at the same time how it can also change your entire outlook on the human race. Which is what Johan Van Zijl has done for me with this project. It sounded simple enough to both of us...port an Android app that had been designed for the smartphone to work on the new tablets coming out for the Android, such as the Samsung Galaxy for example. And at the same time as getting it to work with tablets I asked the developer to revamp the architecture of the app so that it did not require the customer download the entire app when we updated the database. Johan felt it was about a 90 day max job and that sounded reasonable. That was at the end of Feb of 2011. Its now toward the end of September 2011, about 7 months later, and we just finished! The reasons are plentiful and like I said would fill a book but perhaps the most difficult was just getting the Android app to work with so many different devices, each of which worked a little different than another, and to get it to work with any size screen a device might have, adapting to that resolution and reflowing all the pages, plus downloading a huge database without skipping a beat and of course being able to pick up when the connection might have dropped out, etc etc. And the most marvelous thing is that NOT SINGLE TIME DID I HEAR A COMPLAINT FROM THE DEVELOPER. Johan just plowed along day after day, hour after hour, doing everything he could to fix what turned out to be pretty horrible source code from the previous developer. I began to think that maybe Johan was not a human but some sort of angel that had been sent to me to restore my faith in programmers. Okay that might sound extreme but I am being honest when I say Johan is by far the best developer I have ever worked with in my life, and that is no short amount of time, I've been doing this for about 40 years now. I could go on and on but its best to just it at this: I was so lucky to have selected such a remarkable developer on vworker and I am grateful for that. And I am grateful to have started a long enduring friendship with a great guy. Mitch
Mobile App Development
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Bandeira do(a) Mitchell W.
@MitchWaiteGroup
•
há 13 anos
5,0
$233,74 USD
An OUTstanding resource and just a brilliant, nice guy.
PHP
Java
Avatar do Usuário
Bandeira do(a) Lee G.
@techmarketer
•
há 15 anos

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