MongoDB's Former CEO Returns for an Encore After Desai Exits

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MongoDB started the week with a surprise. On September 28, 2026, the database company announced that president and CEO Chirantan "CJ" Desai had left with immediate effect to take a senior role at Meta Platforms. The board named Dev Ittycheria interim president and CEO, also effective immediately, and started a search for a permanent leader with the help of an executive search firm.

The return of a familiar face

Ittycheria hardly needs an onboarding pack. He led MongoDB as CEO from 2014 to 2025, an eleven-year run during which annual revenue grew from about $35 million to more than $2.3 billion. Board chairman Tom Killalea said Ittycheria knows the company deeply and would ensure a seamless transition. Ittycheria himself said he knows the company, its people and its customers extremely well and has enormous confidence in the opportunity ahead. Having a former CEO on speed dial is one of the less glamorous but more useful parts of succession planning.

Perfect timing, in its own way

The handover came one day before MongoDB's investor day, scheduled for September 29 at Nasdaq MarketSite, where leadership planned to discuss long-term strategy, market opportunities and product work on developer data platforms and AI. Presenting a long-term strategy the day after the chief executive leaves is not the script anyone would write, but the company tried to keep the message steady by reaffirming its guidance for the third quarter and full fiscal year 2027, first issued on September 1.

MongoDB describes itself as a data platform for the AI era, with its managed MongoDB Atlas service and self-managed editions, more than 70,000 customers and about 75% of the Fortune 100 among them. For now, the company is betting that a leader who already built most of that business can hold the course while the board looks for someone to take it further.