The grueling path toward profitability and an unpredictable CEO in Elon Musk might be taking their collective toll on some Tesla (TSLA) - Get Tesla Inc Report execs.

Matthew Schwall, who had been the director of field performance engineering at Tesla, has left the company to join rival Waymo according to The Wall Street Journal. A Tesla spokesman didn't confirm nor deny Schwall's departure via an email exchange with TheStreet.

"He [Schwall] joins a long list of Tesla Autopilot executives who have (mostly) gone to Google (GOOGL) - Get Alphabet Inc. Class A Report /Waymo, which apart from operating its own pre-commercial experimental service, also has licensed its autonomous "brain" to Fiat Chrysler (FCAU) - Get Fiat Chrysler Automobiles N.V. Report , Honda (HMC) - Get Honda Motor Co., Ltd. Sponsored ADR Report and Jaguar Land Rover, for incorporation into their 2020-2022 vehicles," says auto industry analyst Anton Wahlman. 

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Schwall's departure comes hot on the heels of Tesla's senior vice president of engineering Doug Field deciding to step away from the company to spend more time with his family.

"Doug is just taking some time off to recharge and spend time with his family. He has not left Tesla," the Tesla spokesman said.

With Tesla trying to ramp production of its Model 3 in the hopes of reaching profitability later this year, the exits of top engineers should be a concern for investors. That investor base also includes the big-thinking Musk, who recently invested a fresh $10 million in the company via stock purchases.  

Keep in mind, Tesla only has three executives on its management team. The last thing it needs to witness is what looks to be a talent exodus under that thin team.