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Nikhil Tiwari

Nikhil Tiwari

Co-founder & CEO at Frekil (YC X25) | ex-Stripe, Amazon | IIT Bombay

nikhilfrekil
San Francisco, California, United States
Joined July 2025

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Summary

Nikhil Tiwari is a co-founder and CEO of Frekil, a Y Combinator-backed startup (YC X25) focused on revolutionizing medical image annotation. Frekil's platform aims to accelerate and streamline the annotation process for healthcare AI teams using AI assistance, certified radiologists, and advanced browser-based tools, thereby cutting timelines from months to days. This initiative highlights his entrepreneurial drive and expertise in applying AI to critical healthcare challenges. ycombinator+1
With a strong background in software engineering, Nikhil has worked at prominent tech companies like Stripe and Amazon, focusing on infrastructure, performance optimization, and low-level systems. His experience spans various internships, including SWE Intern at Truscroll, SDE & AI/ML Intern at The Arena, and Blockchain Technology Intern at Marsh McLennan, demonstrating a versatile skill set in software development and emerging technologies. ycombinator+3
Nikhil is an alumnus of the Indian Institute of Technology, Bombay, where he earned a Bachelor of Technology in Mechanical Engineering with dual minors in Computer Science Engineering and Artificial Intelligence. During his time at IIT Bombay, he was actively involved in student organizations, serving as a Core Team Member and Web Portfolio Head at the Student Alumni Relations Cell (SARC), where he led technical initiatives and developed platforms used by thousands of students. ycombinator+3
His expertise extends to blockchain and web development, having served as a Blockchain Mentor at the Institute Technical Council, IIT Bombay, and a Blockchain Web Developer at Spacetime.one, where he developed an NFT. He also gained experience as a Web Developer for the Student Satellite Program, IIT Bombay. weekday
Nikhil has a particular interest in the technical advancements transforming medical imaging. He authored a detailed blog post on Frekil's website titled "The Invisible Revolution: How WebAssembly and SIMD Are Transforming Medical Imaging From Server Farms to Browser Tabs," highlighting his deep understanding of web technologies and their application in healthcare AI. frekil

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