Ben Mrejen
Co-founder & CTO at Benoit Mrejen
China
Summary
🤩
Rockstar🎓
Top SchoolBen Mrejen is a seasoned full-stack and blockchain developer with 10 years of experience who co-founded and serves as CTO of Lumena AI while also running a freelance engineering practice delivering fast, scalable MVPs and microservice architectures. Comfortable across React, NestJS, Solidity and cloud-native tooling, he has built Web3 products, NFT platforms, and high-availability systems using Kubernetes, RabbitMQ and AWS. He pairs hands-on delivery—daily deployments and API-first design—with engineering best practices like TDD and Clean Code to help startups iterate quickly. Ben also trains and mentors developers: his coding courses and 300+ YouTube lessons have helped over 80% of students secure roles within months. Multilingual and globally mobile across Paris, Shanghai and Tel-Aviv, he brings cross-cultural business experience from China management roles to international consulting. An operator-turned-founder, he uniquely blends product instinct, developer education, and blockchain-first engineering.
10 years of coding experience
9 years of employment as a software developer
Other Prep Classes, Other Prep Classes at IntégraleFinance General, Finance General at East China Normal UniversityMaster of Science Management & Marketing, Master of Science Management & Marketing at emlyon business school Asia CampusJapanese Language and Literature, Japanese Language and Literature at Waseda UniversityMaster in International Business Business, Master in International Business Business at Queen's UniversityScientific, Scientific at Lycée Jean-Pierre VernantFullstack Developer Web Development, Fullstack Developer Web Development at Le WagonLomonosov Moscow State University
Russian, Japanese, Chinese, Spanish, English, French, Hebrew
Github Skills (86)
js10
wechat9
cli9
shell8
autocomplete8
zsh8
typescript8
nodejs8
ruby7
bash7
serverless7
api7
python7
electron7
docker7
Programming languages (10)
Github contributions (5)
bmrejen/portfolio
Nov 2020 - Jul 2025
Contributions:18 pushes, 1 branch in 4 years 8 months
thebluebeard/black-jets
Nov 2017 - May 2019
Contributions:24 PRs, 19 pushes, 10 branches in 1 year 6 months
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