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Justin So

Justin So

Founder & CEO @ Sidekick (YC S26)

FounderSidekick logoSidekick· Summer 2026🇺🇸 Saratoga, California, United States
in LinkedIn
2025Founder· Sidekick (YC S26)
Founder · since 2025
Company
Sidekick (YC S26)
Role
Founder and CEO
current
Stage
—
no public source
Raised
—
no public source
Based
San Francisco, CA
current
Founder / co-founder — the company's markEmployee / research role
Source: LinkedIn work history
Profile coverage5 of 7 · missing posts, contact
Sidekick logo
Sidekick

AI agent that handles frontline operations over text

Summer 2026

Experience

Career

  • Sidekick (YC S26) logo

    Sidekick (YC S26)

    Founder

    Founder and CEO · San Francisco, CA · 2025 – Present

    2025
  • Arm logo

    Arm

    Finance Analyst · San Jose, CA · 2025 – 2026

    2025

Bio

Founder & CEO at Sidekick (YC S26). UPenn Masters in Computer Science. Previously Finance at Arm.