eDreams ODIGEO Connect is a digital platform that enables accommodations to bundle rooms with flights, distribute across major OTAs, and optimize bookings with performance insights.
- Back-End Developer
- Developer
- Front-End Developer
- +1
Henry Lee
- Waterloo, Canada
- 3 projects
Hello! I’m Henry Lee, a blockchain and full-stack developer based in Waterloo, Ontario, Canada.
About
Hello! I’m Henry Lee, a blockchain and full-stack developer based in Waterloo, Ontario, Canada. I bring 5 years of experience building secure, scalable, and high-performance decentralized applications using MERN, React, Web3.js, and Node.js, with backend work on MongoDB and PostgreSQL.
I’ve led end-to-end initiatives, including spearheading a $750k software project as a senior engineer in a 12-person team, designing reusable components used across multiple projects, and significantly reducing development effort. I’ve migrated automation into commercial software, improved query efficiency by up to 59%, cut deployment costs, and even built a chatbot that helped reduce customer service costs by 240%. I enjoy turning complex problems into practical solutions on Ethereum and Binance Smart Chain with ERC standards.
- Joined October 2025
Industry experience
- Software & Internet
- Professional Services
- Media & Entertainment
- Computers & Electronics
Projects · 3
Developed a smart fitness and nutrition app, Oomph AI, helping users personalize workouts and meal plans through AI-driven insights.
- Full Stack Developer
This Power BI dashboard shows a sales ranking report for vendors, labeled “Ranking Vendedores.” It highlights total revenue, average ticket value, and total courses sold, with filters for year, month, region, and course type. The main section visually ranks top sellers — Ana Silva, Francisco Souza, and Antônio Santos — with a detailed table listing all salespeople and their sales amounts.
- Full Stack Developer
Work experience· 4 roles
Freelance Full Stack & Blockchain Developer · FreelancerJan 2025 – Present · 1 yr 11 mos
Built full-stack decentralized applications with user interfaces using React, Web3.js, and Node.js. Developed backend systems to interact with databases like MongoDB and PostgreSQL. API development: created RESTful APIs to interface with smart contracts and blockchain networks.
Freelance Full-Stack Developer · Self-Employed / FreelancerJan 2025 – Present · 1 yr 11 mos
Built full-stack decentralized applications with user interfaces using React, Web3.js, and Node.js. Developed backend systems with MongoDB and PostgreSQL. Created RESTful APIs to interface with smart contracts and blockchain networks. Delivered reusable software components, contributing to a 40% reduction in development effort.
Senior Full Stack & Blockchain Developer · OpenTextJan 2021 – Present · 5 yrs 11 mos
Developed and deployed smart contracts on Ethereum and Binance Smart Chain, focusing on ERC standards. Moved automation solutions into a commercial software product by designing and developing reusable software components used across four projects, reducing development effort by 40%. Re-engineered critical modules to rely on a centralized library to optimize performance by 59%. Coordinated a year-long release of a six-part platform project.
Senior Full Stack & Blockchain Developer · OpenTextJan 2021 – Present · 5 yrs 11 mos
Education
Software Licensing and Distribution · Kenfil Hong Kong2030 – 2009
· University of Waterloo2030 – 2013
Bachelor of Mathematics · University of Waterloo2009 – 2013
Certifications and awards
Gold Medalist2030 – 2025
CSR Volunteer2030 – 2025
Hire Henry Lee today
Post a job and invite Henry, or contact them directly. No hidden commission.