Developer tools

Mesmer

Website
Founded 2025Origin source ↗Checked 2026-09-15

Overview

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.

Company description As recorded 2026-11-08

Founders & team

João de Paula

Founder/CEO

Co-Founder and CEO at Mesmer (P25), the operating system for agentic engineering teams. Previously cofounder at Origin Financial ($400M) and Glio (S13), first LatAm company to go through YC. Serial entrepreneur, self-taught engineer, and product leader with 15 years of experience making something people love.

Founder profile As recorded 2026-09-15

Sergio Oliveira Bergmann

Founder

Co-founder and VP of Engineering at Mesmer, where we're building AI-powered agents to help tech founders overcome the coordination challenges that arise as their startups scale. With over 15 years of engineering leadership in fintech and digital banking, I've spent my career developing products that transform complex challenges into seamless user experiences. I'm focused on leveraging technology to empower founders, simplify growth, and amplify innovation.

Founder profile As recorded 2026-09-15

Lucas Silva

Founder/CTO

Cofounder and CTO at Mesmer (X25). Previously cofounder at Qual Farmácia (2018) and Director of Engineering at Origin Financial. 18 years experience as engineering leader. Passionate about building products that matter

Founder profile As recorded 2026-09-15
7team members reported
Source-reported As recorded 2026-09-15

Founded 2025 · Source

News & product activity

Sources & observations

Y Combinator

Profile depthverified profile
Website observationwebsite reachable
Last website check2026-11-11
Location · source statedBerlin, Berlin, Germany
Pricing evidenceNo pricing page confirmed
Maturity: Not assessed · 3 of 6 areas documented

Source-based assessment · automated evidence rules

The retained text does not establish product availability or customer use.

Maturity is an evidence-based assessment, not a success rating. It may understate the current stage where evidence is limited. Coverage records documented areas, not a complete or independently audited company history.

Stage definitions
independent websitesource corroborationreachable websitedescriptive evidenceclassified market and modelsourced peoplesourced founding year