CandidateX
2022 - 2023Hiring platform with 10K+ users needed consistent UI and faster feature delivery
Focus
Design system that unified product experience
Outcome
50% faster delivery
Mohamed Sassi
I build clean frontend systems for complex products.
Senior frontend developer with 9 years of experience building complex products, design systems, internal tools, and customer-facing applications.
I work best when the product is growing, the frontend is getting harder to ship, and the team needs a system that stays maintainable.
Based in Canada
Available for senior frontend roles, contract work, and product teams that need strong technical ownership.
ReactTypeScriptNext.jsVueNode.jsDesign systems
Selected clients
IntuitTurboTax
LockeBioHealthcare EMR
St. Michael's HospitalHealthcare
CandidateXHR Tech
ReitiumFintech
City of RichmondGovernment
Skills
Frontend
- React
- Next.js
- Vue
- Nuxt
- TypeScript
- Tailwind
Systems
- Design systems
- Storybook
- Accessibility
- State management
Product
- Admin tools
- Billing flows
- Auth
- B2B SaaS
- Healthcare
- Fintech
Full-stack support
- Node.js
- REST APIs
- PostgreSQL
- Prisma
- Stripe
- CI/CD
Selected work
Reitium Crowdfunding
2021 - 2022Fintech platform that lets people invest in real estate without being accredited investors
Focus
Idea to production in record time
Outcome
3 months to launch
Tractor at Home
2021 - 2022E-commerce site was losing customers at checkout because the flow was confusing
Focus
Complete checkout redesign
Outcome
+15% conversions
Experience
Sept 2024 – Present
Senior Frontend Developer (Full-Stack Scope)
LockeBio
- Led frontend architecture for a regulated healthcare EMR platform using React and TypeScript, including application structure, theming, and state management
- Built and maintained a shared component library to ensure consistent UI patterns and accelerate feature delivery
June 2020 – Sept 2024
Senior Front-End Developer (Contract)
MSDC LTD.
- Delivered frontend-led SaaS products, public-sector platforms, and internal tooling for startups and enterprise teams
MSDC Internal
Implemented end-to-end authentication including SSO and OAuth, supporting multiple client configurations
MyRichmond (Radical I/O Technology)
Delivered a city-wide citizen portal aggregating taxes, utilities, licensing, and waste services
Jul 2019 – Jul 2020
Senior Web Developer
St. Michael's Hospital
- Maintained and enhanced WordPress and Yii2 websites while ensuring HIPAA compliance
If you’re hiring for a senior frontend role or need help with a product that’s getting harder to ship, book a call.
I work best with teams that care about product quality, clean systems, and shipping well.
Based in Canada
Usually replies within one business day.