So much for a vacation.

After resigning as president of ethanol producer VeraSun last week to join an unnamed company (see VeraSun loses president to new startup), Bruce Jamerson was confirmed today as the new CEO of cellulosic ethanol vendor Mascoma.

Mascoma is pursuing cellulosic biomass-to-biofuels development and production, and is funded by high profile investors such as Kholsa Ventures and Kleiner Perkins.

“With world class technology from Dartmouth and other universities, immediate implementation plans and a long term technology portfolio for Consolidated Bioprocessing, or CBP, Mascoma is ready to launch cellulosic production and to lead it with even more advanced technologies in the future. Cellulosic technology is far more developed than I imagined just a short while ago,” said Jamerson.

“The addition of Bruce Jamerson’s experience and expertise will enable Mascoma to dramatically advance cellulosic ethanol production and critical strategic partnerships to deliver affordable, renewable fuels to transportation markets,” said Colin South, Mascoma’s President.

Jamerson served as President and Chief Financial Officer at VeraSun until its IPO in June, 2006, when he continued as President. Prior to VeraSun, he was Founder and President of Conifer Investments, an investment banking firm and early stage venture investor.

Jamerson has also served as Vice President of U.S. Natural Resources, Inc., an affiliate of Kohlberg, Kravis, Roberts & Company, and worked in the investment banking department of Credit Suisse First Boston in New York, focusing on energy companies.

“Bruce's proven leadership in the ethanol industry and financial community will substantially advance Mascoma’s commercialization activities and validates the readiness of cellulosic ethanol. Mascoma is an important shot in the war on oil, a war our country needs to win,” said Vinod Khosla, founder of Khosla Ventures.

Mascoma has corporate offices in Cambridge, Massachusetts, and Research and Development labs in Lebanon, New Hampshire. It is applying "unique biotechnology" to cellulosic production, the company says.

Initial activities are focused on wood-based cellulosic feedstocks at commercial scale.