Ishan Sharma

Co-Founder & CTO at Cardboard (YC W26)

Co-founder

Cardboard· Winter 2026 🇺🇸 San Francisco, California, United States

in LinkedIn 𝕏 @ishandeveloper

2025Co-founder· Cardboard Inc.

Founder · since 2025

Company

Cardboard Inc.

Role

Co-Founder & CTO

current

Stage

—

no public source

Raised

—

no public source

Based

San Francisco Bay Area

current

Founder / co-founder — the company's markEmployee / research role

Source: LinkedIn work history

Profile coverage5 of 7 · missing posts, contact

Cardboard

Agentic video editor

Winter 2026

Experience

Career

Cardboard Inc.
Co-founder
Co-Founder & CTO · San Francisco Bay Area · 2025 – Present
2025
HackerRank
Senior Software Engineer · Bengaluru, Karnataka, India · 2025
2025
HackerRank
Software Development Engineer II · Bengaluru, Karnataka, India · 2024 – 2025
2024
HackerRank
Software Development Engineer I · Bengaluru, Karnataka, India · 2023 – 2024
2023
HackerRank
SDE Intern II · Bengaluru, Karnataka, India · 2022 – 2023
2022
HackerRank
Software Engineer Intern · Bengaluru, Karnataka, India · 2021
2021
Indian Institute of Technology, Kharagpur
Research Intern · Kharagpur, West Bengal, India · 2021
2021
PuStack
Software Development Engineer Intern · San Francisco, California, United States · 2020 – 2021
2020
YourMaali
Technical Intern · Chandigarh, India · 2019
2019

Bio

Ishan Sharma is the founder of Cardboard (W26). He is a full-stack engineer with deep experience in high-performance web systems, creative tooling, and applied AI. Previously, he spent ~4.5 years at HackerRank (S11), where he led multiple 0→1 products used by millions. He started programming in 6th grade and built a Windows app in school that crossed 5.7M+ downloads and was featured on CNET and Softonic