# Yibo Huang

![Yibo Huang](/resources/cognition/portraits/yibo-huang.webp)

Agents Engineer at Cognition; ex-Founding Engineer #1 at Probook; ICPC World Finalist  
Cognition  
San Francisco Bay Area

## At Cognition

- Role: Member of Technical Staff (Engineering)
- Joined: Jul 2026
- How they joined: Directly
- Before Cognition: Founding Engineer #1, Probook
- Overlapped before Cognition with other Cognition people at: TikTok (https://www.autumn.ai/resources/cognition/worked-together)

## Identity
- LinkedIn: https://www.linkedin.com/in/yibo-huang-9b8826157
- Domain: cognition.ai

## Notes
- Only public post about working at Cognition, resharing Cognition's $1B annualized revenue announcement, verbatim: "More than doubled since just two months ago when I joined 🤯" (https://www.linkedin.com/posts/yibo-huang-9b8826157_cognition-has-crossed-1b-in-annualized-revenue-activity-7509300990127362048-SsTN)
- Joined Cognition (makers of Devin and Windsurf) as Member of Technical Staff in San Francisco in July 2026; LinkedIn headline reads 'Agents Engineer'. (https://www.linkedin.com/in/yibo-huang-9b8826157)
- Own post at Probook's one-year mark: "One year ago I joined Probook AI as founding engineer #1. Today: over 1,400 commits and 1,000,000+ lines of code shipped." (https://www.linkedin.com/posts/yibo-huang-9b8826157_ai-aiagents-homeservices-activity-7447669477694935040-SJMN)
- Probook co-founder Lewis Z. (Lewis Zhang) recruited him and says he has known Yibo for 15 years; Lewis wrote that Yibo wrote 1 million lines of code at Probook in under a year and the team threw him a crawfish boil. (https://www.linkedin.com/posts/lewisfzhang_yibo-huang-wrote-1-million-lines-of-code-activity-7442614249090322432-aer-)
- Founding Engineer #1 at Probook (AI operating system for home services, NYC, backed by Sequoia and a16z) from 2025 to July 2026, then an advisor to Probook through August 2026. (https://www.linkedin.com/in/yibo-huang-9b8826157)
- ICPC 2020 World Finals (Moscow, held 2021): placed 56th for Virginia Tech as team '46 is a Prime Number' with teammates Alexander Lind and Benjamin Reidys, solving 5 problems. (https://cphof.org/profile/icpc:Yibo%20Huang)
- Did not arrive at Cognition through an acquisition: he came directly from Probook (no Cognition-Probook deal found). Cognition's acquisitions were Windsurf (2025) and The Interaction Company, makers of Poke (announced July 2026, the same month he joined). (https://cognition.com/blog/interaction)
- Probook $40M announcement post: "Over a year in, I've shipped multiple products from zero to hundreds of customers"; problems he named were "Real-time voice AI, dispatch, scheduling, optimization with no clean textbook answer." (https://www.linkedin.com/posts/yibo-huang-9b8826157_probook-raised-40m-from-sequoia-and-andreessen-activity-7475223675370094595-Y2vZ)
- Per Lewis Zhang, Yibo dropped out of college, worked at TikTok, quit after about a year, then spent time teaching kids competitive programming and rock climbing before Lewis pitched Probook; Probook's other co-founder named in team posts is Vincent Porter (CEO). (https://www.linkedin.com/posts/lewisfzhang_yibo-huang-wrote-1-million-lines-of-code-activity-7442614249090322432-aer-)
- ICPC teammate Alex Lind later joined Probook as well (posted about joining around March 2026). (https://www.linkedin.com/posts/alexander-c-lind_i-joined-probook-because-i-saw-a-great-opportunity-ugcPost-7475217074601066496-prEi)
- At TikTok (Jan 2022 - Apr 2024, Mountain View) he was on Product R&D and Infrastructure, Technical Infrastructure, US Storage team. (https://www.linkedin.com/in/yibo-huang-9b8826157)
- AlphaStar Academy bio lists 1st place Stanford ProCo 2018 (Advanced) and 1st place Lockheed Martin CodeQuest 2018 (Advanced). (https://alphastar.academy/cs-summer-camp/)
- Public headline says "Agents Engineer". (https://www.linkedin.com/in/yibo-huang-9b8826157)
- Reshared Cognition's Devin Oncall launch (Devin investigating production alerts with Datadog, Dynatrace, Sentry) and the Series E ($2B+ at $48B valuation, led by a16z and Accel), the clearest public signals of what his team ships. (https://www.linkedin.com/posts/cognition-ai-labs_introducing-devin-oncall-devin-automatically-ugcPost-7516556053254225922-QeF5)
- Described Probook life as "Sleeping in the office, flying out to customer sites, staying up with our CTO until 5am to ship a full product and demoing it to the customer the next morning." (https://www.linkedin.com/posts/yibo-huang-9b8826157_ai-aiagents-homeservices-activity-7447669477694935040-SJMN)
- Studied at Virginia Tech from Aug 2019 (listed Class of 2023); Lewis Zhang says he led his team to ICPC World Finals as a freshman and later dropped out. (https://www.linkedin.com/in/yibo-huang-9b8826157)
- USACO Platinum contestant since 2016; 11th in the USACO February 2019 Platinum contest among AlphaStar-affiliated students. (https://alphastar.academy/usa-ioi-2017-team-announced/)
- 2019 Facebook Hacker Cup Round 3 contestant (self-reported on LinkedIn and ParagonX speaker page). (https://paragonx.academy/speakers/usaco-finalist-old/)
- Taught competitive programming at AlphaStar Academy (Santa Clara) Jun 2018 - Jan 2022, including the USACO Platinum Part A course; a former student's GitHub repo documents taking that class with him. (https://github.com/asubramanian08/AlphaStar-PlatinumA)
- Experienced in problem solving using algorithms and data structures and teaching.

Competitive Programming Achievements:
2020 ACM-ICPC World Finalist
2019 Facebook Hacker Cup Round 3 Contestant
2018 USACO finalist; this comes from the profile summary and preserves the person's own positioning. (https://www.linkedin.com/in/yibo-huang-9b8826157)
- Instructor at X-Camp Academy since Nov 2021, still listed as a current role alongside Cognition. (https://www.linkedin.com/in/yibo-huang-9b8826157)
- The same Virginia Tech trio (Alex Lind, Benjamin Reidys, Yibo Huang) also competed in NSA's ICPC Challenge 2020. (https://nsachallenge20.kattis.com/contests/nsachallenge20/teams)
- Previous roles include Advisor at Probook; Founding Engineer #1 at Probook;  Product RD and Infrastructure-Technical Infrastructures-US-Storage at TikTok; Instructor at Alphastar Academy. (https://www.linkedin.com/in/yibo-huang-9b8826157)
- Lewis Zhang's hiring post cites Yibo reaching grandmaster in League of Legends as an example of a 'second spike' alongside engineering. (https://www.linkedin.com/posts/lewisfzhang_ive-always-hired-for-technical-spikiness-activity-7452718554526900225-E2ih)
- Gave a ParagonX Academy speaker event as a USACO finalist on Dec 12, 2021. (https://paragonx.academy/speakers/usaco-finalist-old/)
- Location is San Francisco Bay Area. (https://www.linkedin.com/in/yibo-huang-9b8826157)

## Experience
- Member of Technical Staff at Cognition - San Francisco, CA (Jul 2026 - Present)
- Instructor at X-Camp Academy (Nov 2021 - Present)
- Advisor at Probook (Jul 2026 - Aug 2026)
- Founding Engineer #1 at Probook (Jan 2025 - Jul 2026): The AI Operating System for Home Services. Backed by Sequoia and a16z.

Dispatch makes or breaks the customer experience, Probook is the only AI platform built around it.
America's leading home services companies trust Probook to drive revenue growth, improve operational efficiency, and add points to their EBITDA.
- Product RD and Infrastructure-Technical Infrastructures-US-Storage at TikTok - Mountain View, California, United States (Jan 2022 - Apr 2024)
- Instructor at Alphastar Academy - 100 Saratoga Ave #100, Santa Clara, CA 95051 (Jun 2018 - Jan 2022)

## Education
- Virginia Tech - (Aug 2019 - Jun 2023)

## Sources
- https://www.linkedin.com/in/yibo-huang-9b8826157
- https://cphof.org/profile/icpc:Yibo%20Huang
- https://www.linkedin.com/posts/yibo-huang-9b8826157_ai-aiagents-homeservices-activity-7447669477694935040-SJMN
- https://usaco.org/index.php?page=finalists18
- https://www.linkedin.com/posts/lewisfzhang_yibo-huang-wrote-1-million-lines-of-code-activity-7442614249090322432-aer-
- https://www.linkedin.com/posts/yibo-huang-9b8826157_cognition-has-crossed-1b-in-annualized-revenue-activity-7509300990127362048-SsTN
- https://www.linkedin.com/posts/lewisfzhang_ive-always-hired-for-technical-spikiness-activity-7452718554526900225-E2ih
- https://cognition.com/blog/interaction
- https://www.linkedin.com/company/cognition-ai-labs/posts
- https://alphastar.academy/cs-summer-camp/
- https://paragonx.academy/speakers/usaco-finalist-old/
- https://nsachallenge20.kattis.com/contests/nsachallenge20/teams
- https://github.com/asubramanian08/AlphaStar-PlatinumA
- https://alphastar.academy/usa-ioi-2017-team-announced/
- https://www.linkedin.com/in/yibo-huang-9b8826157?miniProfileUrn=urn%3Ali%3Afsd_profile%3AACoAACWs4BwBEnSXOBDstQzJ3Y6lnHT0pApwXSY
- https://www.linkedin.com/posts/yibo-huang-9b8826157_probook-raised-40m-from-sequoia-and-andreessen-activity-7475223675370094595-Y2vZ
- https://www.linkedin.com/posts/alexander-c-lind_i-joined-probook-because-i-saw-a-great-opportunity-ugcPost-7475217074601066496-prEi
- https://www.linkedin.com/posts/cognition-ai-labs_introducing-devin-oncall-devin-automatically-ugcPost-7516556053254225922-QeF5


Researched with Autumn (https://www.autumn.ai) from public sources. Updated 2026-11-04. Profile: https://www.autumn.ai/resources/cognition/people/yibo-huang · Everyone at Cognition: https://www.autumn.ai/resources/cognition/people