YC Summer 2026 (S26) founder

Justin So

Founder of Sidekick, AI agent that manages frontline operations over text

Company

Justin So is listed as a founder of Sidekick. Sidekick is an AI agent that manages frontline operations over text. Workers text problems, photos, or voice memos in any language; it answers from the company's own documents, creates and routes the work order, and syncs with the software the company already runs. No app, no login, works on any phone. It watches connected machine data and texts the right worker the moment something starts drifting, before it becomes downtime. And it compounds: most of the industrial world runs on undocumented knowledge, and Sidekick is the first thing that documents it as a byproduct of the work itself. Every interaction contributes to a searchable knowledge base the company owns, so tribal knowledge stops walking out the door when veterans retire.

Founder traction evidence

Public posts and activity attributed directly to this founder.

  1. LinkedIn

    Sidekick YC launch

    Sidekick founder announcement and deployment update.

  2. LinkedIn

    Sidekick founder update

    Sidekick founder post.

  3. X

    Sidekick (S26) just passed $38K MRR.

    Sidekick (S26) just passed $38K MRR. Double last month. Here's how it works: your team texts a number. Work orders, answers, escalations – all handled. No app. No login. No training.

  4. X

    Sidekick (YC S26) handles frontline operations over text – no app, no login, no training.

    Sidekick (YC S26) handles frontline operations over text – no app, no login, no training. On a factory floor, the answer to almost every question already exists. It's just not reachable: → In a binder on a shelf three departments away → In a supervisor's head, and he's on the

  5. X

    Sidekick just launched on @ycombinator's Launch YC! Sidekick: AI agent that handles frontline operations over text.

    Sidekick just launched on @ycombinator's Launch YC! Sidekick: AI agent that handles frontline operations over text. Check them out: https://t.co/WrOZ5gJZmc

  6. X

    Nobody on a factory floor wants another app.

    Nobody on a factory floor wants another app. So Sidekick @sidekicks26 doesn't have one. Your team texts it on whatever they already use. SMS, WhatsApp, Telegram, KakaoTalk. It answers like a coworker who's read every SOP, every work order, and the live machine data. What that

  7. X

    Most maintenance software waits for someone to file a ticket.

    Most maintenance software waits for someone to file a ticket. Sidekick (S26) @sidekicks26 watches the PLC data through SCADA, and the moment something goes wrong it texts the right person on shift – before it turns into real downtime. No app. No login. No manager in the middle.