MS
PT
Portfolio / 2026Vitória da Conquista, Brazil
Available for new projects
FULL STACK/CRO/CONVERSION/SAAS/E-COMMERCE/NEXT.JS/SHOPIFY/A/B TESTING/FUNNEL OPTIMIZATION/ADOBE TARGET/GA4/APPLIED AI/AUTOMATION/

Marcelo Santana Silva
Marcelo S. SilvaFull stack · CRO

I turn ideas into digital products that actually convert.

Full-stack developer with analytical, strategic and technical vision: I ship end-to-end SaaS, high-traffic storefronts, CRO systems and e-commerce consulting, with experimentation, metrics and AI-assisted automation.

Full StackCROShopify

00+

years shipping product

00

brands in production

00

projects in this index

00

SaaS / full-stack builds

01Brands

Brands I've worked with

Brands and operations touched by development, CRO, commerce or automation delivery.

Azul◆Nespresso◆Votorantim Cimentos◆FTD◆
Vitamin Energy◆Auri◆BJJ Fanatics◆Primal Queen◆
02Signal

Product, data and conversion in one system

From full-stack SaaS to enterprise e-commerce: every delivery connects architecture, metrics and experimentation, because performance and conversion are business decisions.

“Build products where data and decisions speak the same language.”

SaaS full stack

Next.js / Node.js

commerce

Shopify / Liquid

CRO & experiments

Adobe Target / GA4

03System

Three fronts, one product vision

Full stack, commerce and CRO are not silos: they are layers of the same system. I architect, build, instrument and test until the decision becomes obvious.

01Full stack

SaaS & digital products end-to-end

From landing page and auth flows to dashboards, APIs and data models: I ship complete products with Next.js, Node.js and PostgreSQL, not just UI slices.

Next.js / ReactNode.js / PostgreSQLSaaS architecture

Product outcome

Working software your team can operate, measure and evolve.

02Commerce

Storefronts built to convert

Shopify, headless storefronts and high-traffic ecommerce with component systems tuned for Core Web Vitals, checkout clarity and iteration speed.

Shopify / LiquidHeadless CMSCore Web Vitals

Engineering outcome

Faster storefronts that stay editable under real traffic.

03CRO

Experimentation & conversion intelligence

A/B tests, personalization and funnel instrumentation with Adobe Target, GA4 and reporting automation, connecting every change to revenue signals.

A/B TestingAdobe Target / GA4Funnel & LP optimization

Business outcome

Decisions backed by evidence, not opinion.

See workflow

Workflow

01Diagnose02Prioritize03Architect04Build05Instrument06Experiment07Optimize08Scale
04Professional experience

Track record

From an educational MVP to production SaaS and enterprise e-commerce: delivery wired into product, data and conversion.

05Education

Technical foundation

Computer Science bachelor's started at UFS, plus an intensive front-end track and a business-oriented software residency.

Node / 01Started at UFS · completed in 2025

Bachelor's Degree in Computer Science

Universidade Federal de Sergipe

Node / 022022 - 2023

Oracle Next Education + Alura | Intensive Front-End Track

Oracle + Alura

Node / 032024 - 2025

Software Engineering Residency

Cepedi

See credentials

Certifications

Adobe TargetGitHub Copilot
06Work

Project index

Select a row to open the frame viewer with challenge, strategy and impact. SaaS, commerce and CRO in one index.

07Toolkit

Technical capabilities

A capability system covering full-stack SaaS, commerce, CRO, measurement, automation and platform.

A · SaaS & application delivery

Next.js · APIs · data · auth

Next.jsReactNode.jsPostgreSQLREST APIsSaaS workflows
B · Experimentation & analytics

A/B testing · funnels · LPs

CROA/B TestingGA4GTMFunnel analysisAdobe Target
C · E-commerce engineering

Shopify · Liquid · headless

ShopifyLiquidHydrogenCheckout UXStorefront APICustom themes
D · Modern interfaces

TypeScript · Tailwind · systems

TypeScriptTailwindCSSDesign SystemAccessibilityPerformanceMobile
E · Applied AI & automation

n8n · agents · AI delivery

n8nCursorClaude CodePrompt engineeringAI-assisted reviewGitHub Copilot
F · Systems & CMS

Payload · Firebase · mobile

Payload CMSFirebaseIonic & CapacitorTechnical SEOGit / GitHubNative mobile
08Services

How I plug into your team

Four engagement tracks: SaaS, CRO, commerce and e-commerce consulting. All tied to a metric the business already watches.

01 · Full-stack SaaS & products

Turn a business problem into a shippable product.

End-to-end delivery: discovery, architecture, front-end, APIs, data modeling and dashboards, with a product mindset and metrics wired from day one.

02 · CRO & conversion systems

Make every release accountable to a metric.

Landing pages, funnels, A/B tests and personalization with Adobe Target, GA4 and Adobe Analytics, from hypothesis to readable impact.

03 · Commerce & storefront engineering

Ship storefronts that convert under real traffic.

Shopify, Next.js and headless architectures with Core Web Vitals, experimentation hooks and a foundation your team can keep evolving.

04 · E-commerce consulting

A clear diagnosis of what is holding your store back, and a plan to unlock it.

Store audit (Shopify or headless) covering funnel, checkout, performance, technical SEO and tracking. You get a roadmap prioritized by impact × effort, test hypotheses and hands-on follow-up with your team through execution.

09Availability

Availability

Open to full-stack, SaaS, e-commerce, CRO and automation roles and projects. Portuguese native, professional English.

Accepting new projects

Pick a weekday and tell me which metric is stuck.

Schedule a conversation
Timezone
UTC−3
Mode
Remote
Languages
PT / EN
Response
< 24h
10Contact
LET'S BUILDWHAT'S NEXT.

Launching a SaaS, fixing a leaking funnel or unblocking a storefront? Let’s turn it into a clear next move, with execution and metrics aligned.

Chat on WhatsApp
FULL STACK/CRO/CONVERSION/SAAS/E-COMMERCE/NEXT.JS/SHOPIFY/A/B TESTING/FUNNEL OPTIMIZATION/ADOBE TARGET/GA4/APPLIED AI/AUTOMATION/