Varun Mohan
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Varun Mohan is an American software engineer and entrepreneur who co-founded the artificial intelligence coding company Codeium, later renamed Windsurf, and served as its chief executive from 2021 until 2025. He is best known for building one of the most widely used AI code generation tools and for an unusual sequence of corporate events in July 2025 in which Google DeepMind hired him, co-founder Douglas Chen, and several of Windsurf's researchers and licensed the company's technology in a roughly 2.4 billion dollar arrangement widely described as a "reverse acquihire." The deal came together days after a planned 3 billion dollar acquisition of Windsurf by OpenAI collapsed, and just before Cognition bought what remained of the company. At Google DeepMind, Mohan became a director of software engineering focused on agentic coding and helped lead Google Antigravity, the agent based development platform the company launched in late 2025.[1][2][3]
Mohan grew up in California, the son of Indian immigrants, and showed an early aptitude for mathematics and programming.[4] He studied at the Massachusetts Institute of Technology (MIT), where he earned a bachelor's degree in electrical engineering and computer science with a minor in mathematics, followed by a master of engineering (MEng) in computer science, completing both by 2017.[5] At MIT he met Douglas Chen, a fellow electrical engineering and computer science student who became his longtime collaborator and the co-founder of all of his companies. The two shared an interest in large scale systems and machine learning infrastructure, the area that would define their early work together.[1][5]
After graduating, Mohan joined Nuro, a Silicon Valley startup building autonomous delivery vehicles. From 2018 to 2021 he worked as a tech lead manager responsible for autonomy infrastructure, the large scale software used to train, simulate, and deploy the machine learning models that power self driving systems.[5] The role immersed him in the practical difficulty of running deep learning workloads efficiently across large fleets of GPUs, where idle or poorly utilized hardware translates directly into wasted money. That problem, the high cost and low efficiency of serving deep learning models at scale, became the seed of his first company.[1][6]
In 2021 Mohan left Nuro and, with Chen, founded a startup originally named Exafunction. Its first product was infrastructure for GPU virtualization and optimization, software meant to let organizations run large language models and other deep learning workloads far more efficiently across cloud hardware. The company built a system that at its peak managed more than 10,000 GPUs, reaching meaningful revenue with a small team.[1][6]
The founders concluded that selling raw infrastructure was a difficult, low margin business and that the larger opportunity lay in building an end product on top of their own efficient serving stack. In 2022 they pivoted and launched Codeium, a free AI powered coding assistant that offered autocomplete and chat features as a plugin for popular editors such as Visual Studio Code and the JetBrains tools. Offered at no cost to individual developers while the team focused on enterprise customers, Codeium grew quickly and positioned itself as a competitor to GitHub Copilot.[1][6][7]
Codeium raised a series of venture rounds as it scaled. After early backing led by Greenoaks Capital, the company raised a 65 million dollar Series B in January 2024 at a 500 million dollar valuation, led by Kleiner Perkins, and a 150 million dollar Series C in August 2024 at a 1.25 billion dollar valuation, led by General Catalyst, which made it a unicorn. By 2025 it had raised roughly 243 million dollars in total.[7][8] In early 2025 the company was reportedly in talks to raise additional capital at a valuation of about 2.85 billion dollars before acquisition interest overtook those plans.[8]
In November 2024 the company released the Windsurf Editor, a standalone, AI native integrated development environment built as a fork of Visual Studio Code. Rather than acting only as an assistant inside an existing editor, Windsurf put AI agents at the center of the coding workflow, letting them read across a codebase, make multi file edits, and run tasks with developer oversight. The product was a hit: by the company's account the Windsurf Editor reached more than one million developers within months of launch.[1] In April 2025 the company rebranded from Codeium to Windsurf, adopting the name of its flagship product. By the middle of 2025 Windsurf reported around 82 million dollars in annualized recurring revenue and more than 350 enterprise customers.[2]
Windsurf's rapid growth made it a target in the intensifying competition among AI labs for coding tools and talent. In the spring of 2025, OpenAI agreed to acquire Windsurf for about 3 billion dollars, in what would have been OpenAI's largest acquisition to date.[9] The deal ran into complications tied to OpenAI's relationship with Microsoft, its largest investor, which under existing agreements had broad rights to OpenAI's intellectual property. OpenAI did not want Microsoft to automatically gain access to Windsurf's technology, and the two sides were unable to resolve the issue. Pressure on Windsurf increased when Anthropic cut off the startup's first party access to its Claude models in early June 2025, citing the pending acquisition by a direct rival.[10]
The exclusivity period on OpenAI's offer lapsed in July 2025, freeing Windsurf to consider other options. On July 11, 2025, Google announced that it had hired Mohan, Chen, and a small group of Windsurf's research staff into Google DeepMind, and had taken a nonexclusive license to certain Windsurf technology, in an arrangement reported to be worth about 2.4 billion dollars in licensing fees and compensation. Because Google did not buy the company or take a controlling stake, the structure was widely characterized as a "reverse acquihire." Google said the hires would "advance our work in agentic coding." Jeff Wang, Windsurf's head of business, became interim chief executive of the roughly 250 person company that remained.[3][11]
The departure of the founders and the deal's structure initially left the remaining employees in a precarious position, with reporting describing a "very bleak" mood inside Windsurf because many staff stood to gain little from the Google transaction.[12] The situation resolved within days. On July 14, 2025, Cognition, the startup behind the autonomous coding agent Devin and led by chief executive Scott Wu, signed a definitive agreement to acquire the rest of Windsurf, including its product, brand, intellectual property, and remaining team. Cognition said all Windsurf employees would participate financially, with vesting cliffs waived and vesting accelerated. As part of the transition, Windsurf regained access to Anthropic's models, a point Wang summarized in an announcement video with the line that the company was "friends with Anthropic again." Cognition's valuation subsequently rose sharply, reaching about 10.2 billion dollars in September 2025.[2][13]
At Google DeepMind, Mohan took the title of director of software engineering and continued to work on agentic coding, the area in which AI systems plan and carry out multi step programming tasks with limited human intervention. On November 18, 2025, Google launched Google Antigravity, an agent first development platform released alongside its Gemini 3 models. Like Windsurf, Antigravity is built as a fork of Visual Studio Code, and it lets developers direct autonomous agents that plan, write, execute, and verify work across the editor, terminal, and browser. Mohan became a public face of the platform, and many observers viewed it as a continuation of the Windsurf vision inside Google.[14][15] At Google's I/O developer conference in May 2026, he helped present an expanded version of Antigravity that added a desktop application, a command line interface, a software development kit, and managed agent services, tied to the company's faster Gemini coding models.[16]
As of 2026, Mohan remains at Google DeepMind as one of the leaders of its agentic coding and developer tools efforts. His path, from autonomy infrastructure at Nuro to a GPU optimization startup, to a leading AI coding tool, and finally into a major AI lab, is frequently cited as an example of how quickly value and talent shifted during the 2025 wave of AI coding deals.[1][3]
| Year | Event |
|---|---|
| 2017 | Earns bachelor's and master of engineering degrees in EECS from MIT |
| 2018 to 2021 | Works on autonomy infrastructure at Nuro |
| 2021 | Co-founds Exafunction with Douglas Chen, building GPU optimization infrastructure |
| 2022 | Company pivots and launches Codeium, a free AI coding assistant |
| Jan 2024 | Raises 65 million dollar Series B at a 500 million dollar valuation (Kleiner Perkins) |
| Aug 2024 | Raises 150 million dollar Series C at a 1.25 billion dollar valuation (General Catalyst) |
| Nov 2024 | Releases the Windsurf Editor, an AI native IDE |
| Apr 2025 | Company rebrands from Codeium to Windsurf |
| Spring 2025 | Planned ~3 billion dollar acquisition by OpenAI is negotiated, then collapses |
| Jul 11, 2025 | Google DeepMind hires Mohan, Chen, and researchers and licenses Windsurf tech (~2.4 billion dollars) |
| Jul 14, 2025 | Cognition acquires the remaining Windsurf company, product, and team |
| Nov 2025 | Google launches Antigravity, an agentic development platform Mohan helps lead |
| May 2026 | Helps present an expanded Antigravity platform at Google I/O |