Sebastien Conejo
CEO Of Manifest at Incubateur HEC Paris
Berkeley, California, United States
Summary
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RockstarSebastien Conejo is a product-focused tech founder and CEO based in Berkeley with nine years of experience building developer-first backend tooling and digital products. As co-founder of Manifest he now leads an AI-friendly Backend-as-a-Service that turns a single YAML schema into a full backend, aiming to empower junior developers and streamline collaboration and versioning. His background spans founding CASE (an open-source JS framework) and running Buddyweb, where he combined product management, UX design, and hands-on engineering to deliver bespoke business applications. He repeatedly operates at the intersection of design, developer experience, and emerging AI tooling, and currently serves as Founder in Residence at HEC Paris. A detail often missed: he focuses as much on developer workflows and simplicity (single-file schemas) as on delivering business value, making complex stacks approachable for smaller teams.
9 years of coding experience
2 years of employment as a software developer
French, English, Spanish
Stackoverflow
21reputation
14kreached
1answer
0questions
Github Skills (70)
cms10
github10
ruby10
rest-api10
backend10
javascript10
get-started10
bulma10
backend-api10
flexbox10
api10
webapp10
yaml10
html10
readable10
Programming languages (10)
Github contributions (5)
mnfst/website
Oct 2023 - Mar 2025
Manifest website: https://manifest.build
Contributions:8 releases, 8 reviews, 19 PRs in 1 year 5 months
baasmanifest
SebConejo/bulma
Jun 2022 - Jul 2024
Modern CSS framework based on Flexbox
Contributions:3 pushes, 2 branches in 2 years 1 month
sasscssframeworkflexmodern-css
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