SAN FRANCISCO — One of four named plaintiffs in the high tech recruitment class action against Apple, Google, Adobe and Intel wants to derail a $324 million settlement reached last month, which he claims lets the Silicon Valley giants off far too easily.

In a May 11 letter to U.S. District Judge Lucy Koh, Michael Devine attacks the settlement as “grossly inadequate” and insufficient “to achieve justice for the class.” Devine, a former engineer for Adobe Systems Inc., complains he was not informed of the discussions that led to the tentative settlement until after an agreement had been reached.