I build what doesn't exist
A custom cart with upsells on par with Rebuy, internal bots reporting sales, traffic and ACOS, and Node.js integrations between Shopify and external systems.
Available for new projects
Hi, I'm Andrey Vasquez Tech Lead & Senior Shopify Developer
5+ years and 70+ Shopify and Shopify Plus stores for brands and agencies across Latin America, the US and France. Today I lead the dev team at ConvertMate.
Cali, Colombia · Remote
- 5+
- Years of experience
- 70+
- Shopify stores
- 30+
- Live stores running A/B tests
- +50%
- Mobile PageSpeed (40 → 60)
Brands and clients I've worked with
- Swarovski Panamá
- SARKANY
- Vibro Sculpt
- Redu Sculpt
- The Classic T-Shirt Co.
- Centrale Fillers
- Drift Paradiz
- Densmore
- Lummia
- Hairebel Extensions
- CARBINOX
- Cobranza Activa
About me
More than a theme developer, I build what doesn't exist out of the box.
Tech Lead and Senior Shopify Developer. I've spent 5+ years building and optimizing Shopify and Shopify Plus stores: 70+ stores for agencies and brands across Latin America, the United States and France.
Today I lead the development team at ConvertMate, a CRO agency for DTC brands. I implement and QA A/B tests with Intelligems across 30+ live stores, lead two developers and make sure the team ships fast without breaking anything: processes, automation, code review and technical interviews.
Measurable performance
At The Classic T-Shirt Co. I raised mobile PageSpeed from 40 to 60 by optimizing the theme, product pages and checkout on Shopify Plus.
Real scale
Managed 10+ stores at Zero to One, including Vibro Sculpt and Redu Sculpt: USD 1M in sales in a single month and launches in Mexico, Ecuador, Colombia and Chile.
Open source
Published a skill so AI agents (Claude Code, Cursor) write Liquid following Shopify's new theme architecture (block and partial), based on real patterns from Dawn.
Experience
Career path
From software developer to Tech Lead of Shopify teams. DTC brands, agencies and Shopify Plus Partners across Latin America, the US and Europe.
-
ConvertMate - Ecom Brand Booster
Miami, United States · Remote Full-time
Tech Lead
- Lead the development team (two developers) at a CRO agency for DTC brands in Latin America and the US, with 30+ live Shopify and Shopify Plus stores.
- Implement and QA A/B tests in Intelligems: turn the CRO team's hypotheses into working variants and verify they measure correctly before going live.
- Standardized Core Web Vitals optimization and built a library of reusable sections shared across projects.
- Code review, technical support for the team and technical interviews for new hires.
Senior Shopify Developer
- Development on Shopify and Shopify Plus stores for DTC brands: A/B tests with Intelligems, sections and landing pages with Instant Page Builder and custom code, and Core Web Vitals optimization. Promoted to Tech Lead after six months.
-
The Classic T-Shirt Company
California, United States · Remote Full-time
Tech Lead
- Technical owner of the Shopify Plus store for a premium apparel brand in California.
- Raised mobile PageSpeed from 40 to 60 by optimizing the theme, product pages and checkout.
- Custom theme (Liquid, JavaScript, CSS) with a mobile-first approach and an automated release evaluation system before publishing to production.
-
Zero to One SAS
Cali, Colombia · Hybrid Full-time
Senior Shopify Developer
- In charge of 10+ stores, including Vibro Sculpt and Redu Sculpt, brands that reached USD 1M in sales in a single month and launched in Mexico, Ecuador, Colombia and Chile.
- Built from scratch a custom cart with upsells and cross-sells on par with Rebuy.
- Internal notification bots with sales, traffic and ACOS metrics for the team.
- Launched and maintained stores across multiple countries, ensuring updates, security and performance.
Stack
Tools I work with
The technologies I use every day to build fast, scalable stores that convert.
Shopify Ecosystem
- Shopify Liquid
- Shopify Plus
- Online Store 2.0
- Storefront API
- Admin API (REST & GraphQL)
Frontend
- JavaScript (ES6+)
- TypeScript
- React
- Next.js
- Astro
Backend & Data
- Node.js
- REST & GraphQL
- PostgreSQL
- MongoDB
- NestJS
CRO & Analytics
- Intelligems (A/B Testing)
- Core Web Vitals
- Google Analytics 4
- Klaviyo
- Triple Whale
Projects
Featured projects
A selection of technical challenges solved in production for real brands.
Real-time cart and inventory sync
Omnichannel cart sync architecture that validates inventory in real time with low-stock and sold-out notices. Fixed data inconsistencies caused by translations (Langshop) and cart persistence across sessions and devices.
- Cart API
- GraphQL
- Liquid
- Node.js
Dynamic cross-selling engine
Complementary products block built into the PDP. Uses the recommendations API and metafields to handle variants, prices with and without tax and the bundle total in real time to maximize AOV.
- Shopify APIs
- Metafields
- CRO
High-performance financial dashboard
Financial data visualization app built with Next.js. Aggressive caching, optimized queries and security to render critical metrics and interactive charts with minimal latency.
- Next.js
- PostgreSQL
- Vercel
- API
Open source
Tools I've published for the community.
shopify-liquid-skills
Skill for AI agents (Claude Code, Cursor) that writes Liquid following Shopify's new theme architecture: block and partial tags, partial rendering and real patterns from Dawn.
- Shopify
- Liquid
- AI Agents
tinify-watcher
Node.js script that watches the downloads folder, sends every new image to the TinyPNG API, compresses it and converts it to WebP with no manual steps.
- Node.js
- Automation
- WebP
portafolio
This site: Astro, Tailwind CSS and zero unnecessary JavaScript. Bilingual, accessible and optimized for Core Web Vitals.
- Astro
- Tailwind CSS
- SEO
Recommendations
What clients and colleagues say
Recommendations published on my LinkedIn profile.
"I had the chance to work with Andrey on our Shopify development at The Classic T-Shirt Company, and he was one of the most reliable execution partners we've worked with. Strong technically, but more importantly consistent, thoughtful, and able to take well-defined requirements and turn them into clean, working implementations without a lot of back-and-forth. If you have a clear vision of what needs to get built, Andrey will get it done."
Paul Garibian
Founder & CEO · The Classic T-Shirt Company
Managed me directly
"Andrey is an exceptional professional. His collaboration was key during the technology implementation at Cobranza Activa. Beyond his excellent technical command as a programmer, I highlight his analytical ability to understand complex challenges and turn them into efficient solutions. He is impeccably serious and rigorous in delivery, but above all, a great person."
Alejandro Sanchez
Founder & CEO · Cobranza Activa
Was my client
