This profile has not been claimed and data may not be accurate.
Founder243Past founder
96th percentile
Investor54Current investor
86th percentile
Combined
Algolia co-founder and CTO who built a $2B+ search API unicorn
Credibility
this founder typical founder (50th pct)
Technical Depth · 98th percentile
- Founded the company behind algolia/places, a flagship open-source project with 5,301 stars on GitHub.
- Demonstrates personal technical depth in HN comments: detailed discussion of search engine architecture, CPU/RAM/disk trade-offs, Lucene internals, and CORS/caching edge cases at the systems level.
- Top HN post 'GitHub Cheat Sheet' scored 193 points — in the 100–499 tier.
- GitHub profile identified at github.com/JulienLemoine, linked from their LinkedIn page.
Relationship Matrix
Founder score
- 99%Probability of being accurate (99%)Y Combinator W14 alum — Algolia participated in the YC Winter 2014 batch.
- 97%Probability of being accurate (97%)Past co-founder of Algolia, now serving as Advisor and Board Member after stepping back from the CTO role in October 2022.
- 97%Probability of being accurate (97%)Identified Hacker News account @jlemoine with 1,042 karma, active since 2012.
- 97%Probability of being accurate (97%)Hacker News karma of 1,042 — in the 500–1,999 tier.
- 95%Probability of being accurate (95%)algolia.com ranks #8,351 on the Majestic Million (global domain prominence).
- 95%Probability of being accurate (95%)Algolia was co-founded with Nicolas Dessaigne and other co-founders.
- 95%Probability of being accurate (95%)Active HN poster with 77 story posts, exceeding the 20-post threshold.
- 93%Probability of being accurate (93%)Top HN post 'GitHub Cheat Sheet' scored 193 points — in the 100–499 tier.
- 90%Probability of being accurate (90%)Founded the company behind algolia/places, a flagship open-source project with 5,301 stars on GitHub.
- 90%Probability of being accurate (90%)3 HN posts scored 100+ points and front-paged — in the 2–4 front-page virality tier.
- 90%Probability of being accurate (90%)Wikidata entity exists for Julien Lemoine (Q117314800), confirming public notability as a French computer scientist and entrepreneur.
- 90%Probability of being accurate (90%)Posted 6 'Show HN' launch posts on Hacker News, demonstrating repeated public product-launch activity.
- 88%Probability of being accurate (88%)Demonstrates personal technical depth in HN comments: detailed discussion of search engine architecture, CPU/RAM/disk trade-offs, Lucene internals, and CORS/caching edge cases at the systems level.
- 88%Probability of being accurate (88%)Google Knowledge Graph maintains a knowledge panel for Julien Lemoine as an Entrepreneur — a hard-to-manufacture notability threshold.
- 85%Probability of being accurate (85%)Algolia last raised at approximately a $2.25B valuation (Series D, 2021) and remains a private unicorn.
- 85%Probability of being accurate (85%)GitHub profile identified at github.com/JulienLemoine, linked from their LinkedIn page.
Investor score
- 95%Probability of being accurate (95%)Publicly identified as an angel investor, confirmed by Foundersuite, CBInsights, and multiple press mentions of angel investments.
- 88%Probability of being accurate (88%)CBInsights records 14 active investments by Julien Lemoine across his angel portfolio.
- 85%Probability of being accurate (85%)Three portfolio companies were acquired: Jubiwee (acquired by Coyo), LemonStand (acquired by Intuit Mailchimp), and Jelly HQ (acquired by Pinterest) — each at undisclosed or sub-$100M values.
- 65%Probability of being accurate (65%)Approximately 10 years of angel investing experience, with first recorded investments dating to around 2015.
What you likely need
As the technical co-founder of Algolia — a $2B+ search API unicorn and YC W14 company — you bring rare depth in developer-tools infrastructure and a strong angel portfolio. Events that connect you with other unicorn-level technical founders, deep-tech investors, and developer-ecosystem builders would be most valuable right now. Your active angel investing and board experience also make you a natural fit for curated investor-founder matchmaking at the seed and pre-seed stage.
Would you attend these IRL Festival events?
We will tune and customize your Founder Festival experience to make sure you get invited to the events that would be most valuable to you.
- introsA YC W14 alumni founder dinner to reconnect with batch-mates and share post-exit/board transition playbooks.
- positioningA unicorn-founder roundtable on scaling developer-tools companies from Series B to $1B+ ARR.
- introsAn angel investor deal-flow dinner focused on early-stage developer infrastructure and AI tooling startups.
- tacticalA technical founder and CTO offsite workshop on search, retrieval, and AI-native product architecture.
- tacticalA board governance workshop for technical founders transitioning from operator to board/advisor roles at growth-stage companies.
- fundraisingA curated seed-fund LP introduction dinner for active angels looking to formalize a micro-VC vehicle.
- positioningA developer-ecosystem positioning roundtable with other API-first founders on community-led growth and developer adoption.