Another former Uber executive is joining Travis Kalanick’s robotics and industrial AI startup Atoms, just a few weeks after it raised $1.7 billion.

Gautam Gupta, the former finance chief under Kalanick, said in social media posts on Wednesday that he has joined Atoms as chief financial officer. Gupta spent more than four years at Uber until he left in July 2017, just a few weeks after Kalanick resigned as CEO. (Gupta had announced his intention to leave that May.)

Hiring Gupta continues a trend of Kalanick getting the Uber band back together at Atoms. Earlier this year, Atoms acquired mining autonomy startup Pronto, which is run by former Uber (and former Google) self-driving engineer Anthony Levandowski. According to LinkedIn, a number of former top Uber employees who worked with Kalanick also work at Atoms, which was previously called CloudKitchens.

“On many levels, this round is a bit of unfinished business. Fuel to complete the bits-to-atoms story arc we started at Uber, continued at CloudKitchens, and will now finish at Atoms,” Kalanick wrote when he announced the $1.7 billion funding round last month.

Uber even joined the round as an investor, reuniting the company with the founder it pushed out in 2017 after a series of scandals and complaints of widespread sexual harassment and discrimination. Uber hasn’t disclosed how much it contributed. The Information reported $100 million, a figure that TechCrunch has also been able to confirm.

Kalanick has said he wants Atoms to work on mining, food, and transportation, though his posts to date about the startup have been less about specifics and more about wanting to “go up against the final boss, Nature and its fierce resistance to change.”

Gupta invested in Uber in 2012 when he was a vice president at Goldman Sachs, and then joined the company in 2013.

“[T]he single biggest reason I joined was — Travis. I believed he possessed a magical mix of genius and intensity that made me want to bet on the person, not the market,” Gupta wrote Wednesday. “First one in, last one out, every day. Breaking down walls of regulations, unions, city bureaucracies, etc. Had he not pioneered ridesharing, I don’t think anyone else had the fortitude to fight through one adversity after another to create a whole new market worth hundreds of billions out of nothing.”

Gupta wrote Wednesday that A*, the VC firm he co-founded in 2020 after three years at Opendoor, invested in Atoms in what was the “largest investment in the history of our fund.” Gupta is stepping down from A* to take on the CFO role at Atoms, according to his LinkedIn profile.