Startupsby GlyphWhy it ranks
How the rank works- team of 7Team size · YC's directory+4.7
- went through YCProgram · this site+4
- hiringHiring · Titles (titles.fru.dev), YC+2
A sum of public facts, not a judgement and not investment advice.
Competitors
| Company | Category | Status | Program |
|---|---|---|---|
| AI, Devtools | Active | YCW25 | |
| AI, Data | Not stated | speedrunSR007 |
Adjacent
| Company | Category | Status | Program |
|---|---|---|---|
| Devtools | Acquired | YCW21 | |
| AI | Active | YCX25 | |
| Devtools | Active | YCW20 | |
| AI | Active | YCF26 | |
| WarestackShared: engineering, deliveryAlchemist Class 38Not statedOther | Other | Not stated | AlchemistClass 38 |
Also from X25 in AI
All of X25Founders
- João de PaulaFounder/CEO
- Sergio Oliveira BergmannFounder
- Lucas SilvaFounder/CTO
About Mesmer
Mesmer builds software factories for engineering teams. Keeping a team at the state of the art with agents has become a full-time job, and the target keeps moving. We do that job for our customers: we're always finding the biggest bottleneck in how their team ships and fixing it in their factory. We're repeat founders and CTOs in Berlin, backed by YC, GFC and 468 Capital.
- YC batch
- X25 · Spring 2025
- Status, per YC
- Active
- Category
- AI, Developer tools
- Team size
- 7
- Location
- Berlin, Berlin, Germany
- Founded
- 2025
- Checked
- 6h ago
YC tags: SaaS, Productivity, Team Collaboration, AI
Changes seen
Mesmer: questions
Which YC batch was Mesmer in?
Mesmer was in Y Combinator's Spring 2025 batch (X25).
Is Mesmer still active?
Y Combinator lists Mesmer as active.
Who founded Mesmer?
Mesmer's founders, as listed on its YC page: João de Paula (Founder/CEO), Sergio Oliveira Bergmann (Founder), Lucas Silva (Founder/CTO).
Where is Mesmer based?
Mesmer lists Berlin, Berlin, Germany as its location on YC's directory.