About Crystal Yong | Contra Crystal Yong

Crystal Yong

Crystal Yong

Full Stack Developer | Booking, Rental & Multi-Vendor System

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Crystal is ready for their next project!

Toronto, Canada

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Toronto, Canada

Meet Crystal

Followed by Joaquín P

Full Stack Developer specializing in booking platforms, multi-vendor systems, and Stripe Connect integrations. I build revenue-critical infrastructure using React, Next.js, Node.js, and SQL — with clean architecture, scalable cloud deployments, and performance-driven SEO to support real operational growth.

Identity verifiedVetted for secure and trusted collaboration.

Rate

$100 - $150/hr

Skills and tools

Software Engineer SEO Specialist Mobile Engineer Software Architect

Details

Software Developer | Booking Systems, Marketplaces, SEO at CyMarketplaces

https://www.cymarketplaces.com/

Toronto, Canada

Fluent in English

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For independents

Contra Pro Manage freelance projects Get verified as an expert Find jobs Get discovered Sign contracts Send invoices Commission-free payments Gumroad alternative Lemon Squeezy alternative Polar alternative

For companies

For companies Manage team projects Share hiring workspace Post jobs Discover contractors Sign contracts Approve invoices Global payments & tax compliance

Use Cases

For companies For freelancers For partners For agencies For VCs

Resources

Challenges Partnerships Advertising Creative Human Data Human Creativity Benchmark Creative Arena Project-based hiring calculator Guide to flexible hiring Guide for agencies Creator tools awards Customer stories Blog FAQs for freelancers FAQs for companies Referrals

Hire Freelancers

Explore all Top independents Design Engineering Marketing Music & audio Social media Video & animation Product Business consulting & HR Other

Contact

Contact support

Company

Mission Careers Terms & conditions Privacy policy Cookie policy

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