Rémi Lemonnier
About Rémi Lemonnier
Rémi Lemonnier is a French entrepreneur based in the Greater Paris area. He co-founded Scibids in 2016 with Julien Hirth. Scibids built customisable AI for digital media buying. He served as CEO and later as President, and oversaw R&D and global growth across its international offices.
He trained at École des Ponts ParisTech and holds a Ph.D. in machine learning from ENS Paris-Saclay, awarded in 2016. He did the doctorate while working at Numberly (1000mercis Group). His thesis applied AI to real-time bidding.
Scibids was acquired by DoubleVerify in 2023 for a reported $125M. His LinkedIn headline describes him as an entrepreneur, investor and philanthropist, and he has posted about donating to effective-giving charities.
On LinkedIn he says he has backed 12 adtech startups as an angel since the Scibids exit. He writes that he helps founders balance quick revenue against positioning for a strategic acquirer. He was due to discuss adtech and angel investing on stage at the Adtech Economics Forum in London.
Public databases list only a few of his deals. Crunchbase and CB Insights show two investments, and Tracxn lists one, Presti in July 2024. The 12 startups he mentions are not named publicly.
In June 2026 he joined Concord's $3M seed round. Concord is a New York and Paris agentic media buying platform. Its product, Concord Agent, turns briefs into live campaigns and manages pacing and optimisation across ad platforms. Other backers include a16z Scout, Drysdale, Motier Ventures and Better Angle. He is also an advisor to Concord.
Explaining the investment, he said Scibids built the decisioning layer of programmatic and that the execution layer has yet to be built.
In July 2024 he was one of several angels in Presti's $3.5M seed round, led by Partech. Presti makes AI-generated product photos, starting with the furnishing industry.
His public deals are early-stage rounds: two seed rounds, in 2024 and 2026. His own comments and the portfolio point to AI applied to advertising and media buying, with one generative AI commerce deal. Tracxn lists France as his main investment geography, and Concord operates in the US and EMEA. He has not published a check size, and none is stated here.
- Concord: agentic media buying platform; $3M seed announced June 2026, and he is also an advisor.
- Presti: AI-generated product photography; $3.5M seed led by Partech, July 2024.
- linkedin.com/in/remi-lemonnier
- concord.ad/about
- exchangewire.com/blog/2026/06/23/concord-raises-3m-to-build-agentic-ex
- finsmes.com/2026/06/concord-raises-3m-in-seed-funding.html
- partechpartners.com/news/product-photography-made-by-ai-presti-raises-
- alumni.ens-paris-saclay.fr/en/article/remi-lemonnier-when-artificial-i
- brand-innovators.com/speakers/remi-lemonnier
- crunchbase.com/person/remi-lemonnier
Investing activity
Rémi Lemonnier appears in 1 AI deal tracked by the Lounge deals desk. The rounds are mostly Seed, with a median round size of $3M. The most recent is Concord (Seed, $3M, Jun 2026).
Rémi Lemonnier most often invests alongside Motier Ventures, Drysdale Ventures, a16z Scout Fund and Better Angle, and the companies they back on Lounge are mostly in AI.
Deals
Frequently asked questions about Rémi Lemonnier
Who is Rémi Lemonnier?
He is a Paris-based entrepreneur and angel investor. He co-founded the AI media buying company Scibids in 2016, and DoubleVerify acquired it in 2023.
What stage does Rémi Lemonnier invest in?
His documented deals are seed rounds: Presti in July 2024 and Concord in June 2026. He has not published a stage policy.
What is Rémi Lemonnier's check size?
It is not public. He has not stated a check size, and the public records of his rounds show only the total round sizes.
Which AI startups has Rémi Lemonnier invested in?
Public sources name Concord, an agentic media buying platform with a $3M seed in 2026, and Presti, an AI product photo startup with a $3.5M seed in 2024. He also says he has backed 12 adtech startups as an angel.
Should adtech AI founders pitch Rémi Lemonnier?
His background and stated focus are adtech and AI for media buying, so founders in that area have the clearest fit. He has said he helps portfolio companies think about revenue timing and strategic exits.
How can founders contact Rémi Lemonnier?
His public profile is on LinkedIn. No personal website or X account was found.
Is Rémi Lemonnier an angel investor?
Yes. Rémi Lemonnier invests personally as an angel.
What AI companies has Rémi Lemonnier invested in?
Rémi Lemonnier's AI investments include Concord. The 1 round on Lounge are listed on this page with amounts, dates and co-investors.
What stage does Rémi Lemonnier invest at?
In the rounds tracked on Lounge, Rémi Lemonnier has invested at Seed, with a median round of $3M.
Who does Rémi Lemonnier co-invest with?
Rémi Lemonnier's most frequent co-investors on Lounge are Motier Ventures (1 deal), Drysdale Ventures (1 deal), a16z Scout Fund (1 deal), Better Angle (1 deal) and Philippe Corrot (1 deal).