Alex Hajjar
Co-Founder at Butter
Portugal
Summary
🤩
Rockstar🎓
Top SchoolAlexandre Hajjar is a seasoned entrepreneur and engineer with 13 years building product-led startups and developer-first services, currently co-founding Butter from Portugal. He previously co-founded and served as CTO of Legalstart.fr, where he bootstrapped the product, scaled an engineering team to market leadership, and ran end-to-end technical and product strategy across Python/Django and modern frontend stacks. Alexandre combines hands-on systems design (experience with Haskell, Elm, Node, blockchain integration) with pragmatic product operations, rules-as-code and language-design work from his time at beta.gouv.fr. Early projects include predictive finance tooling and real-time data pipelines, reflecting a persistent focus on data-driven productization. He pairs formal computer-science training from Telecom ParisTech/EURECOM with operator experience in hiring, OKRs, A/B testing and scaling engineering culture.
13 years of coding experience
9 years of employment as a software developer
Bachelor of Science (B.S.) Mathematics, Bachelor of Science (B.S.) Mathematics at Lycée PasteurMaster of Science (M.Sc.) Computer Science, Master of Science (M.Sc.) Computer Science at Telecom ParisTechMSc CS, MSc CS at EURECOM
English
Stackoverflow
5,032reputation
681kreached
28answers
59questions
javascript
top-5%
Github Skills (87)
simulation-modeling10
python10
google-sheets-api-v410
legaltech10
google-sheets10
google-sheets-api10
ai-agent10
django10
gspread10
spreadsheet10
jinja210
des10
tui10
simulation10
template-engine10
Programming languages (10)
Github contributions (5)
Zooip/MinnieContracts
May 2017 - Apr 2025
Workspace for Freeftopia Minnie's Solidity contract
Contributions:2 PRs in 7 years 11 months
solidity
buttermarkets/whip
May 2022 - Aug 2022
Treasury Risk Analytics Dashboard with Strategy Backtesting for DAOs
Contributions:88 reviews, 106 commits, 73 PRs in 2 months
backtesting
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