I worked at CeleraOne full-time (More than a year)
I can not seem to find any reasonable pros at the moment, the place is purely a temporary thing unless you are a masochist.
Too many to number.
Even the management tries to fix their reputation on social media and job interview sites, but its their attitude which needs to be completely revamped.
Zero attitude, No respect for work contract, human dignity, work hours, nothing.
Advice to Management
I can not advise them anything, since it seems kind of lost.
I applied online. The process took 2+ months. I interviewed at CeleraOne (Berlin (Germany)).
I was assigned a simple task: developing a web application that interfaced with Github's API. Then I went through a series of Skype calls with engineers and CEO of the company.
The first interview probed my technical skills. In the second interview we went through my solution to the task assigned, and they did some more probing of my technical skills.
I believe the third interview was performed by a higher ranking engineer (CTO maybe?), and we mostly discussed the company's operations and stack.
Finally I met with the CEO, and we discussed my interest in the company, operations, and compensation.
From first contact I had a fantastic time, everyone (HHRR, Engineers, CEO) was approachable and accommoddating
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