yc-s21

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Legend
Avijit Sharma Has Spent 17 Years Turning Crowds Into Clarity
Founder · Operator · Executive

Avijit Sharma Has Spent 17 Years Turning Crowds Into Clarity

Before FrontPage put stock-market conversation into one feed, Sharma built a mentoring network around the same stubborn idea: useful knowledge gets better when people can find one another.

avijit-sharma · frontpageRead →
Legend
Stephen Igwue
Founder · Engineer · Executive

Stephen Igwue

Stephen Igwue is a Nigerian software engineer and co-founder of Suplias (YC S21), a Lagos-based B2B fintech that lets FMCG distributors and retailers buy inventory on credit through its Obtainly app. He leads the company as Chief Executive Officer, having earlier driven its technology as CTO, and describes his work in the language of Arthur C. Clarke: building software good enough to look like magic.

stephen-igwue · supliasRead →
Legend
Tony Park
Founder · Executive · Operator

Tony Park

Tony Park is the co-founder and CEO of Stipop (YC S21), a sticker and character-content platform he launched in 2017 with his boarding-school roommate Daniel Cho. What began as a consumer sticker store in Seoul grew into a global API and SDK that lets any app add stickers with a single line of code, reaching hundreds of partners including Google, Microsoft Teams, Canva and Adobe, and generating over 200 million sticker views a month. Splitting time between Seoul and Santa Monica, Park was part of the first Korean team through Snap's Yellow accelerator before joining Y Combinator, and he has since steered Stipop toward helping independent character creators earn from their work.

tony-park · stipopRead →
Legend
Yuxin Zhu
Founder · Engineer · Executive

Yuxin Zhu

Yuxin Zhu is the co-founder and CEO of Replo, a San Francisco low-code platform that lets ecommerce brands build high-converting Shopify landing pages without writing code. A UC Berkeley computer scientist, he first made his name building Berkeleytime, a course-scheduling tool that grew to over a million annual sessions and was acquired by the University of California. After six years engineering and managing product teams at Uber through its IPO, he reunited with college friend Noah Gilmore to launch Replo in Y Combinator's Summer 2021 batch. The company has raised over $8 million and onboarded thousands of brands, much of it on word-of-mouth growth.

yuxin-zhu · reploRead →
Legend
James Dorris
Founder · Executive · Engineer

James Dorris

James Dorris is the co-founder and CEO of Odys Aviation, a Long Beach company building long-range, hybrid-electric VTOL aircraft that take off and land like a helicopter but cruise like an airplane. A former fusion physicist who started at MIT's Plasma Science and Fusion Center, he helped build the propulsion and levitation tech at Virgin Hyperloop One before turning to flight. At Odys he is chasing aircraft that can lift off from a helipad, fly up to 1,000 miles on a hybrid system, and cut regional travel emissions sharply while serving defense, logistics, and passenger markets.

james-dorris · odys-aviationRead →
Legend
Sahil Hasan
Founder · Executive · Operator

Sahil Hasan

Sahil Hasan is the CEO and Co-Founder of Dots, a developer-friendly global payouts platform that has processed over $1 billion to more than 1 million gig workers, creators, and contractors in 190+ countries. A UC Berkeley EECS grad with a CMU master's degree, Sahil spent time as a Research Engineer at Google X before co-founding Dots through Y Combinator's S21 batch. The company raised an $8.9M Series A in February 2026 led by DCM Ventures, is profitable, and growing revenue 400% year-over-year.

fintech · paymentsRead →
Legend
Andrew Luo
Founder · Engineer · Executive

Andrew Luo

Andrew Luo is the Co-Founder and CEO of OneSchema, a San Francisco-based data integration platform that automates CSV imports and data validation for enterprise software companies. A Stanford CS graduate who left school a year early, he cut his teeth as one of Affinity's first engineers before co-founding OneSchema in 2021 after watching customer success teams drown in spreadsheet cleanup work. Backed by Y Combinator, General Catalyst, and Sequoia, OneSchema has raised $6.4M and serves 130+ companies including Toast, Vanta, and Scale AI. Andrew and co-founder Christina Gilbert were named Forbes 30 Under 30 in Enterprise Technology.

founder · ceoRead →