Former chief executive at Sixis takes same role at Nextreme Thermal Solutions.

John Goehrke has joined Itochu Technology Ventures-backed Nextreme Thermal Solutions as chief executive (CEO). Goehrke was previously CEO of Sixis, a peer to Nextreme, a US-based maker of small power management products for the electronics industry, and Luna Technologies.

In July last year, Nextreme raised $8m in its extended series B round from undisclosed corporate investors to take its total investment to $35m since launch in 2004.

The original $13m B round that closed in August 2008 came from Japan-based…