Developing
The stack I build with day to day.
Learning
Training in web development. Motion, interaction, and the crossover with design.
HengDevelopment
- Dorri's Dental SEOTechnical & on-page SEO.Explore
- Shawarma Palace SEOMenu & location pages, technical SEO.Explore
- Insper-U Full Stack ApplicationStudent essay-sharing platform.
Heng Leangheng Ou
UI/UX Designer & Frontend Developer with 4+ years of experience designing and building websites and e-commerce stores. Based in Montreal, specializing in Shopify, frontend development, technical SEO, and conversion-focused user experiences.
Freelance Designer / Developer + SEO
Self-employed · Freelance
May 2026 – Present · Montreal, QC
- Design and build Shopify storefronts and custom features for direct clients, from UX through frontend implementation.
- Recent work includes a custom loyalty program, dynamic cart rewards, and Klaviyo-integrated cart recovery for Decorolala.
UI/UX Designer & Frontend Developer
EZShop · Full-time
Mar 2022 – Mar 2026 · Montreal, QC
- Designed end-to-end UI/UX for e-commerce clients on Shopify, delivering polished storefronts in Figma.
- Built and maintained responsive frontends for multiple client websites.
- Improved site performance, technical SEO, and conversion rates across client accounts.
- Collaborated with clients to deliver custom web solutions tailored to their brand and business goals.
Graphic Designer
Vasco Design International · Contract
Jul 2021 – Oct 2021 · Montreal, QC
- Developed brand identity assets and marketing collateral for client campaigns.
- Ensured visual consistency across print and digital deliverables.
UI Designer
Blü Creative · Internship
Mar 2021 – Jul 2021 · Montreal, QC
- Contributed to UI design projects and web concepts in collaboration with the creative team.
- Produced wireframes and prototypes to communicate design intent.
Graphic Designer
iagree AI · Internship
Oct 2020 – Nov 2020 · Montreal, QC
- Created illustrations and visual assets to support product and marketing initiatives.
Education
Diploma, Full Stack Web Development
Concordia University
2022
Intensive full-stack program covering HTML, CSS, JavaScript, React, Node.js, Express, and MongoDB, built around shipping complete web applications from database to interface.
Associate's Degree, Graphic Design
Shadd Health & Business Centre
Apr 2019 – Nov 2020
Studied typography, layout, branding, and production for both print and digital across the Adobe suite, building the visual foundation I still design interfaces on today.
Skills
JavaScriptTypeScriptReact.jsNext.jsNode.jsExpress.jsMongoDBMySQLHTML/CSS
Foundation PrinciplesTypographyCompositionColor PsychologyDesign JudgmentConversion Rate OptimisationUI/UXBranding & Identity
Git & GitHubShopify LiquidFigmaAdobe Creative SuiteWordPressWebflowRain (Lightspeed)DNS & Domain Management
Technical SEOSearch Engine OptimisationPerformance & SEOSemrushScreaming FrogGoogle Search Console
Languages
English: Full Professional Proficiency
French: Professional Working Proficiency
I'm Heng, a developer based in Montreal. For the past few years I've been building e-commerce sites and websites, drawing on a background in design and SEO. I'm now working more on the back end and looking for a full-stack role.
Highlights
4+ years
Agency experience. Frontend & ecommerce, fast-paced.
150+
Websites designed. User-first, principle-driven.
Technical SEO
Executed with structure, optimization, and crawlability.
Current projects
Building websites and design systems for clients, from UX through to front-end.
Hobbies
Extreme sports. What I love is the creative side, the identity in each style.
- JavaScript
- React.js
- Express
- Node.js
- MongoDB
Creative
The design tools and skills behind the interfaces.
- Figma
- Adobe Suite
- Branding
- User Interface
- User Experience
Education
Where the design and code skills came from.
Concordia University
Web-development bootcamp
2022
Shadd
Computer Graphic
2019 - 2021
Soft
How I like to work with people.
- Communication
- Collaboration
- Adaptability
- Problem solving
- Time management