entrepreneurs-first
(4)
Shubham Palriwala
Shubham Palriwala is the co-founder and CEO of Agnost AI (YC S26), a startup building the self-improving layer for AI agents in production. A backend engineer by trade, he was the youngest engineer on Cisco's analytics team and the first hire at open-source survey company Formbricks before teaming up with childhood friend Parth Ajmera to read production AI conversations and automatically ship fixes back to the agents that generate them.
Filip Auksztol
Filip Auksztol is the CEO and founder of Quantum Boost, a London-based deep-tech startup that uses machine learning to help chemists formulate better products faster. A trained quantum physicist who earned a PhD at Singapore's Centre for Quantum Technologies and studied materials science at Oxford, he turned the math of atomtronic devices toward a more stubborn problem: the slow, trial-and-error grind of laboratory formulation. Quantum Boost's platform applies Bayesian optimization to experimental data, promising to cut formulation development time by 50 to 80 percent across inks, paints, pharmaceuticals and specialty chemicals.
Tuhin Chakraborty
Tuhin Chakraborty is the co-founder and CEO of Mimica, a process intelligence company whose software watches how people actually work - every click and keystroke - and turns that into the process maps enterprises need to deploy AI agents reliably. A former Pandora and LinkedIn engineer who grew up in the Bay Area, he started the company in 2017 with neuroscientist Raphael Holca-Lamarre on a simple bet: capability means nothing in enterprise AI without context. Mimica now serves more than 30 large enterprises, including multiple Fortune 500s, and raised a $26.2M Series B in 2025 led by Paladin Capital Group.
Joseph Ros
Joseph Ros is US Partner and General Manager at Entrepreneurs First (EF), the global talent-first investor that backs exceptional individuals before they have a co-founder or company. An EF alum himself - he founded edtech startup HowCloud during EF's third London cohort - Ros joined the team in late 2017, led expansion into Singapore, Hong Kong, and Bangalore, deployed over $20M via EF's Seed SPV, and now runs EF's North American operations from San Francisco, identifying and investing in the country's most ambitious founders from day zero.