I'm Vincent Walker, a Senior Software Engineer with over 7 years of experience architecting and
scaling production-grade full-stack applications. I specialise in the Ruby on Rails 8 and Hotwire
ecosystem (Turbo + Stimulus), with deep expertise in React, AWS, and building maintainable,
high-performance systems.
As the founder of Mercantiworld, I took the leap in 2025 to build and launch a complete e-commerce
platform from the ground up. This experience sharpened my ability to own products end-to-end,
from technical architecture and scalable infrastructure to secure payments and user experience.
Mercantiworld
New
Mercantiworld is a modern, scalable e-commerce engine built from the ground up to
empower independent brands with custom storefronts and streamlined operations.
Key highlights:
Architected and launched a full-stack MVP using Ruby on Rails 8 + Hotwire (Turbo + Stimulus),
delivering a highly responsive, SPA-like experience with minimal JavaScript
Designed and implemented a multi-site architecture with secure multi-provider
payment integrations (Stripe + Braintree)
Built and stress-tested a robust AWS infrastructure (Elastic Beanstalk, S3, Lightsail, etc.)
for high availability and future scalability
Managed the complete product lifecycle as sole engineer: UX design, backend architecture, automation,
technical documentation, and deployment pipelines
