Google has come up with a unique, albeit seemingly unintentional, method to reveal its investment in a company.

Google’s corporate venturing arm has obliquely disclosed it invested in US cloud start-up Wingu, after it announced job applications for a "stealth company" which were exactly echoed by the cloud business it backed. Google declined to comment. Wingu did not respond to a request for comment.

Google Ventures offered four job opportunities at an unnamed "stealth company", and Wingu offered up exactly the same positions.

Wingu’s product Elements provides a platform for scientists to share and…