ALVIN SOVEREIGN

Senior FullStack TypeScript Developer

A business-oriented FullStack TypeScript developer with over 9 years of experience working in multiple industries, solving complex problems with code.

AVAILABLE FOR NEW PROJECTS

ABOUT


Throughout my career, I have crafted high-performance web applications with an unwavering focus on exceptional user experience and accessibility, turning complex challenges into impactful digital solutions.

I'm a FullStack TypeScript developer transforming complex business challenges into elegant digital solutions. From scaling enterprise e-commerce to building innovative EdTech content platforms, I specialize in high-performance React applications that drive real business results.

I consistently deliver optimized user experiences through data-driven performance improvements and strategic A/B testing. As a performance-obsessed developer, I bring a keen eye for optimization and accessibility to every project, ensuring applications exceed both technical benchmarks and user expectations.

My latest side-project is an innovative events platform that bridges dance communities with event organizers, delivering a seamless experience through web and mobile applications.

EXPERIENCE


Feb 2021 - Jan 2025

VML (Previously known as Wunderman Thompson)

Project: Spearheading development for the evolution of PVH's major fashion brands - Calvin Klein and Tommy Hilfiger
Position:Contract Senior TypeScript Developer
Industry:E-commerce

As a key member of the engineering team, I helped transform both Calvin Klein and Tommy Hilfiger's e-commerce platforms from single-page applications to sophisticated, config-driven storefronts. I played an integral role in migrating to ContentStack CMS while crafting pixel-perfect UIs for each brand's redesign. Through well-tested, maintainable code, we significantly reduced production issues and consistently hit our deadlines.

My role grew as I took on challenges across the sales funnel, diving deep into performance optimization that made a real difference to both platforms. By implementing server-side rendering and strategic A/B testing, we saw a 12% boost in conversion rates. I also enhanced the user experience by building a service worker that enabled push notifications, giving marketing teams powerful new tools for their campaigns.

Accessibility was another passion project of mine, where I championed WCAG standards and ARIA implementations to ensure both Calvin Klein and Tommy Hilfiger's platforms were truly inclusive. Throughout the project, I kept communication flowing between technical teams and stakeholders, regularly presenting our progress on migration and new features within the NX monorepo architecture.

Beyond the code, I found real satisfaction in mentoring team members in production-grade web development practices. By sharing knowledge and maintaining high standards, we built a stronger, more capable team together.

Oct 2020 - Dec 2020

Tinizine Ltd

Project: Creating a new web-billing experience for a childrens TV channel
Position:Contract Senior Frontend Web Developer
Industry:Media

Architected and delivered a modern, config-driven billing platform for global educational content providers, integrating Braintree and Vodafone Pay while ensuring optimal user experience and accessibility standards.

Jun 2020 - Sep 2020

Idean UK (Superdrug Mobile)

Project: Transforming Superdrug Mobile's digital presence
Position:Contract Senior Frontend Web Developer
Industry:Communications

Transformed Superdrug Mobile's digital presence by leading the migration from Ruby on Rails to a modern GatsbyJS architecture, while implementing critical features for GDPR compliance and customer support integration.

Nov 2019 - Mar 2020

DixonsCarphone

Project: Bridging Marketing and Analytics for Currys
Position:Contract Frontend Web Developer
Industry:Retail

Bridged multiple data-dependent teams by developing robust analytics implementations, enabling sophisticated user behavior tracking and personalization through Adobe's ecosystem.

Jul 2019 - Nov 2019

Micro:bit Educational Foundation

Project: Supporting the creation of BBC micro:bit educational content website
Position:Contract Frontend Web Developer
Industry:Education

Engineered an accessible, multilingual educational platform using GatsbyJS and Sanity CMS, creating custom content management solutions to facilitate global computer science education.

Oct 2017 - Jul 2019

Homelyfe Ltd / Aventus

Project: Creation and maintenance of Homelyfe's/Aventus white-label insurance products
Position:Frontend Web Developer
Industry:Insurance

Development of white-label solutions for insurance products, developing configurable web and mobile applications while creating internal tools for analytics and app generation.

April 2016 - October 2017

Chambers & Partners Ltd

Project: Modernizing legacy applications
Position:Frontend Web Developer
Industry:Law

Modernized legacy applications through Angular implementations, developing performant single-page applications interfacing with REST APIs while maintaining code quality and consistency.

April 2015 - October 2016

Freelance Web Development

Project: Various projects
Position:Frontend Web Developer
Industry:Freelance

Started my career as a freelance web developer, working on various projects for clients. I worked on a range of projects such as photography, small business marketing websites and more.