Dexter Horthy
FounderFounder at HumanLayer
San Francisco, California, United States
FoundedHumanLayer Β· YC
About
Dexter Horthy spent seven years in engineering, software engineering, product management, and executive roles at Replicated, a Series C developer tools company, where he worked on container orchestration for enterprise customers. He has coded since high school and currently focuses on context engineering approaches for coding agents.
dex @dexhorthy
excellent writeup from the legendary @kinglycrow - models are good but AGI is a ways off Ian built and sold a coding agent startup last year and has been deep in the research mines on agents and especially agents for red/blue security stuff recently. He has some of the most https://t.co/vkQcgNaKzi
Aug 2, 2026 Β· β₯ 64 Β· β 6
dex @dexhorthy
fight slop with slop - keep your core clean but vibe everything you can to understand how your system is changing and create novel forms of feedback for both models and humans. Great talk https://t.co/nBvIu5IhD4
Aug 2, 2026 Β· β₯ 86
dex @dexhorthy
oh wow we went a little deeper on SlopCodeBench and the frontier is better but not by much...stay tuned for the full post https://t.co/a2ZFt2igBu
Aug 1, 2026 Β· β₯ 50
Founder at HumanLayerYC F24
Intro paths
Dexter went through Y Combinator (Fall 2024) β any YC alum in your network can reach them through the YC community.
In turn, Dexter can intro founders to HumanLayer's investors below.
HumanLayer's investors Β· 1
Experience
- HumanLayer (YC F24)CEO and Co-Foundercurrent2024 β presentSan Francisco, CA
- PrefectAdvisorcurrent2021 β present
- metalytics.devCEO and Co-Founder2023 β 2024Chicago, Illinois, United States
- ReplicatedSenior Product Manager / Advisor to the CEO2022 β 2023Chicago, Illinois, United States
- ReplicatedVice President, Solutions Engineering and Customer Success2020 β 2022
- ReplicatedFDE2018 β 2020Culver City, California
- ReplicatedCore Engineer2017 β 2018
- Aspiration.comPlatform Engineering Lead2016 β 2017Marina Del Rey, California
- Aspiration.comBackend Engineer2016Greater Los Angeles Area
- Sprout Social, Inc.Software Engineer -- API/Platform2013 β 2016Chicago, IL
- University of ChicagoTechnical Office Assistant2012 β 2013
- Determined to SucceedAcademic Tutor2008 β 2009Greater Los Angeles Area
- Jet Propulsion LaboratorySummer Intern2008Greater Los Angeles Area
Education
- University of ChicagoBachelor of Arts (BA), Physics2009 β 2013
- Y Combinator
Skills & more
+5 more
Twitter APIFacebook APIDistributed SystemsRedisCassandraLanguages French Β· German Β· Latin
From Dexter's professional profile.
Same school
Also attended University of Chicago273
+ 267 more
Also attended Y Combinator1,464
+ 1,458 more
Shared employers
Also worked at Prefect2
Also worked at Aspiration.com1
Also worked at Sprout Social, Inc.5
Also worked at University of Chicago49
+ 43 more