CRO Developer & Full-Stack Engineer with 4+ years shipping Shopify, WordPress, Webflow, React and Next.js — backed by Node.js, Python, PHP, Java and Ruby, and enough paid-traffic experience to know what every click is worth.
Daily Renewal Serum
Quantity
$48
Add-to-cart rate
+28% lift
For recruiters
The 20-second version.
Everything you need for a first screen, in one place.
- Role
- CRO Developer · Frontend · Full-Stack
- Experience
- 4+ years in ecommerce engineering, multi-brand CRO at ConversionWise
- Core stack
- Shopify / Liquid, React, Next.js, Node.js, PHP, Python
- Location
- Remote from Brazil · UTC−3, full overlap with US business hours
- Languages
- Portuguese (native) · English (professional)
- Availability
- Open now — full-time, contract or freelance
4+
years shipping ecommerce
5
DTC brands & partners
12
languages & frameworks in the toolbox
2
working languages, EN & PT
Selected work
Case studies, not screenshots.
The problem, what I built and why it mattered — for every project.
Shopify CRO & Product Experience · 2024
Assence
A high-converting Shopify storefront engineered for aggressive promo campaigns and bundle offers.
WooCommerce & Subscription Systems · 2023
Buyiver
End-to-end WooCommerce infrastructure: subscriptions, Stripe, an optimized checkout and a full platform migration.
Premium Ecommerce · 2024
Peaked
Conversion-focused product pages and bundle flows for a premium brand in a competitive market.
Fashion Ecommerce · 2024
Sunner
A premium fashion storefront with refined collection layouts and editorial product presentation.
Pick your lens
Hiring for a specific role? Start where you need me.
Frontend
Interfaces that sell.
CRO development on Shopify, WordPress and Webflow. Product UIs in React and Next.js.
- Shopify
- WordPress
- Webflow
- React
- Next.js
Backend
Systems that hold under launch traffic.
APIs, integrations and data in Node.js, Express, Python, PHP, Java and Ruby.
- Node.js
- Express
- Python
- PHP
- Java
- Ruby
Full-Stack
From ad click to database row.
One owner for the whole funnel: paid traffic, landing page, storefront, API and analytics.
- CRO
- Paid traffic
- APIs
- Analytics
How I work
A method, not a guess.
- 1
Research
Analytics, heatmaps, session recordings and customer voice to find where revenue leaks.
- 2
Hypothesis
Every change starts as a falsifiable bet with one primary metric.
- 3
Build
Production-grade code: isolated, fast, accessible and QA'd on real devices.
- 4
Test
A/B tested with proper sample sizes, guardrail metrics and clean tracking.
- 5
Scale
Winners become permanent components; learnings roll into the next test.
Paid traffic
I know what a click costs — so I build pages that pay it back.
Experience running and instrumenting paid acquisition means I design for the visitor the ad actually sent: matching message, fast first paint, and tracking the media buyer can trust.
- Landing pages built around ad angle and audience awareness
- Pixel, Conversions API and server-side tagging set up right
- UTM and event naming the whole team can read
- Test results tied back to spend, not vanity metrics
Meta Ads
Campaign structure, creative testing and Conversions API so the algorithm learns from real purchases.
- Ads Manager
- Conversions API
- Pixel & Events
- Advantage+
- Creative testing
Google Ads
Search, Shopping and Performance Max with clean feeds and enhanced conversions.
- Search
- Shopping
- Performance Max
- Merchant Center
- Enhanced Conversions
TikTok Ads
Spark Ads and events API for DTC launches where attention is the bottleneck.
- Spark Ads
- Events API
- TikTok Pixel
Measurement
Tracking plans, server-side tagging and dashboards — so every test and every click is attributable.
- GA4
- GTM (web + server)
- Looker Studio
- UTM governance
- BigQuery
What partners say
Trusted by founders and growth teams.
Erick rebuilt our PDP and bundle flow under a tight deadline. He handled Liquid, scripts, QA and CRO implementation with minimal back-and-forth — the kind of partner you trust to own a release end to end.
Assence
Ecommerce Lead
Subscriptions, Stripe, custom WooCommerce funnels and a full platform migration — Erick scoped it, built it and shipped it without dragging the team into every decision.
Buyiver
Founder
Across multiple DTC brands, Erick consistently translated CRO hypotheses into clean Shopify implementations — variant tests, bundle logic, sticky CTAs — shipped fast and measured properly.
ConversionWise
CRO Team
- ConversionWise
- Assence
- Sunner
- Peaked
- Buyiver
Proof, not promises
This site, measured live in your browser.
No screenshots of Lighthouse scores — these numbers come from the Performance API on your device, right now.
Time to first byte
measuring…
First contentful paint
measuring…
Largest contentful paint
measuring…
Layout shift
measuring…
JavaScript transferred
measuring…
DOM elements
measuring…
Recruiter FAQ
Quick answers.
Yes. I'm open to full-time, contract and freelance roles, remote-first. I'm based in Brazil (UTC−3) and comfortable working US or European hours.
Yes — as an international contractor or through an employer-of-record such as Deel or Remote. Async communication and written documentation are part of how I already work.
Wherever engineering meets revenue: CRO developer, Shopify / ecommerce engineer, or a full-stack role on a growth team. The Frontend, Backend and Full-Stack pages go deep on each.
I turn Figma into production code, push back with data when it matters, and speak the media buyer's language — ROAS, CAC, AOV — so nothing gets lost in handoff.
Tell me your timeline and I'll give you an honest answer in the first reply.
Let's build something that converts.
Hiring for a role or scoping a project? I reply within one business day.