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RONI CLEI.
Portrait of Roni Clei Santos smiling

Roni Clei Santos

Magento® · Web · Performance

Available to help with your project

High-performance websites & e‑commerce people actually love.

Magento® & Adobe Commerce specialist for 13+ years. From enterprise architecture to landing pages, company websites and extreme performance tuning.

13+ years
Magento & PHP since Jan 2013
Full-Stack
Front, back & integrations

Everyday stack

Expertise

From high-converting landing pages to enterprise e‑commerce.

13+ yearsAdobe Certified

Magento® & Adobe Commerce

Modules, architecture and support, without breaking the core.

  • Custom modules
  • Adobe Commerce Cloud
  • Knockout.js
  • RequireJS
  • Luma / Custom Themes
  • Upgrades

Landing Pages & Company Websites

Light, good-looking and ready for Google.

  • Lighthouse 100
  • Technical SEO
  • JavaScript ES6+
  • Tailwind CSS

Web Performance & Core Web Vitals

Surgical frontend work on Lighthouse, item by item, plus a tuned backend: SQL, PHP and caching.

  • Lighthouse item by item
  • LCP · CLS · INP
  • SQL / MySQL queries
  • Redis & Full Page Cache

Full-Stack Architecture & Integrations

Systems talking without blocking checkout.

  • ERP
  • CRM
  • Payments
  • Async queues
  • REST / GraphQL APIs
  • AI automation

Featured cases

Engineering that became results.

Case 01 · Automotive enterprise

Automotive enterprise marketplace

Used vehicles for a global automaker on Adobe Commerce Cloud. I joined as Senior Frontend and became the project architect.

custom modules
14
lost leads
Zero
async queue
RabbitMQ
PHPRabbitMQGraphQLJavaScriptCRMPayments

Case 02 · Performance

Extreme performance & Core Web Vitals

Two fronts: surgical frontend work on the Lighthouse report, item by item, and a tuned backend in SQL, PHP and caching.

Lighthouse / PageSpeed score
95–100
Core Web Vitals in the green
LCP < 1.8s
Zero layout shifts
CLS < 0.05
Optimised queries & TTFB
SQL + Redis
JavaScriptKnockout.jsMySQLRedisRequireJSFull Page Cache

Case 03 · B2B/B2C & SaaS

B2B/B2C, own products & AI

Store, APIs, AI agents and cloud talking to each other: less manual work, from catalogue to back office.

on one base
B2B + B2C
AI agents & pipelines
Python + LLMs
headless visual audits
Playwright
PythonClaude APIGraphQLPostgreSQLDockerGoogle Cloud RunPlaywrightSaaS

Recommendations

People who worked with me recommend me.

Real LinkedIn recommendations · 7

  • Able to analyse complex scenarios, propose robust solutions and write clean, high-quality code, always following best practices.

    Iara CordeiroDelivery Manager · my direct managerTranslated from Portuguese
  • I had the opportunity to work with Roni at MRM and I can say, with confidence, that he is one of those professionals who make a difference within a team. [...] I also highlight his ability to analyse complex problems and propose consistent solutions, something extremely important in large projects and e-commerce environments that demand stability, performance and the ability to evolve.

    Thiago CovreSenior Fullstack Developer Magento 2 · we worked on the same teamTranslated from Portuguese
  • Although he performs exceptionally as a Frontend developer, his experience goes far beyond: he also works as a Backend developer, with a very solid Full Stack vision, and shows excellent ability and architectural vision in building robust, well-structured solutions.

    Rodrigo Braga PradoSenior Cloud Analyst · we worked on the same teamTranslated from Portuguese
  • I had the pleasure of working with Roni, an exceptional professional and a great leader, who stands out for his technical knowledge, his strategic vision and, above all, his ability to share knowledge and develop people.

    Ednelson OliveiraDesenvolvedor Full-Stack · I was his team leadTranslated from Portuguese
  • Working with Roni on building and evolving the Marketplace, I found not only an engaged, committed and meticulous professional, but also a trustworthy, motivated and very competent person.

    Hengels DesidérioManagement Consultant · my clientTranslated from Portuguese
  • Roni was not just a colleague, he was a mentor for me and thought me everything I know about Magento 2 Frontend. [...] Any team with him becomes better and more efficient, because he's always able to contribute with the tasks and issue, often with very good insights, often taking the responsibility for himself and taking care of the problem.

    Ulisses PeraltaTechnical Manager · we worked together
  • I had the pleasure of working with Roni for quite some time, at two different companies. I can confidently say that Roni is an exemplary professional. [...] Roni has a keen eye for visual and usability details, which makes a significant difference in the final user experience. Working with him has always been synonymous with trust.

    Cristhian Silveira SilvaMagento / Adobe Commerce Developer · we worked together at two companies

Career

13+ years, from 2013 to today.

See the full career

Drag to explore (2013 — Today)

  1. Jan 2013 – Apr 2017

    Senior Developer, Magento & WordPress

    Digital Hub Interactive

    • Where it all started
    • Magento 1.7
    PHPJavaScriptMySQL
  2. Apr 2017 – Aug 2018

    Magento Senior Web Developer

    Grupo Polvo

    PHPJavaScriptMySQL
  3. Dec 2018 – Feb 2020

    Magento Frontend Developer

    Trezo

    • Magento 2 frontend
    • Adobe certification (Dec 2019)
    JavaScriptKnockout.js
  4. Feb 2020 – Mar 2021

    Senior Magento Frontend & Tech Lead

    Avanti Tecnologia & Marketing

    • Tech lead
    • several Magento 2 projects
    PHPJavaScriptKnockout.jsMySQL
  5. Mar 2021 – Feb 2022

    Senior Magento Frontend & Tech Lead

    Compasso UOL

    • Frontend lead
    • dental multinational
    JavaScriptKnockout.jsPHP
  6. Feb 2022 – Sep 2022

    Magento Front-End Developer

    Canadian company

    • Remote
    • distributed team
    • in English
    JavaScriptKnockout.js
  7. Oct 2022 – Aug 2023

    Magento/Adobe Commerce Developer

    ioasys

    • Frontend lead
    • B2B Adobe Commerce
    JavaScriptKnockout.jsPHP
  8. Dec 2023 – May 2025

    Magento/Adobe Commerce Developer

    Lyncas

    • Sole e-commerce developer
    • solar energy
    PHPJavaScriptKnockout.jsMySQL
  9. Jun 2025 – Oct 2025

    Senior Adobe Commerce Backend

    Infobase

    • Custom modules
    • optimised SQL
    • APIs
    PHPMySQLGraphQL
  10. Nov 2025 – Sep 2026

    Senior Software Engineer, Adobe Commerce/Magento

    MRM Brasil

    • Automotive marketplace
    • Adobe Commerce Cloud
    • named architect
    PHPJavaScriptKnockout.jsRabbitMQGraphQL
  11. Today

    Independent consulting

    Magento, web and performance projects. Available.

    Magento® & Adobe Commerce
Portrait of Roni Clei Santos smiling

About me

The human behind the code.

I'm Roni. I work remotely for clients in Brazil and abroad, in Portuguese or English. You talk directly to the person writing the code.

  • 01

    Business vision

    Tech decisions measured in sales.

  • 02

    Clear communication

    No middlemen.

  • 03

    Deadlines matter

    Risks flagged early.

Quick answers

How can I help you?

Tap a question. The answer is straight to the point.

I just need a landing page or a fast website. Do you do that?

Yes. Light landing pages and company websites with semantic HTML, technical SEO and a 99–100 Lighthouse score, like this site. No heavy WordPress, no unnecessary plugins.

I want a landing page
My website or store is slow. How do you fix performance?

I measure first: Lighthouse, Core Web Vitals and whatever blocks loading. Then I work through the Lighthouse report item by item (LCP, CLS, INP, render blocking, JS/CSS and images) and the backend (SQL queries, PHP, Full Page Cache and Redis). You see the before and after.

I want a faster site
How do you work on Magento / Adobe Commerce projects?

From custom modules to architecture: Adobe Commerce Cloud, upgrades, integrations, Luma, Knockout.js and RequireJS frontends. 13+ years of Magento, Adobe Certified Expert Front End.

Talk about my Magento store
Do you work per project or on an ongoing contract?

Both. Fixed-scope projects or an ongoing contract for evolution and support, always remote. You talk directly to me, no middlemen.

Discuss the format
How do you integrate ERPs, CRMs and payment providers?

Through REST/GraphQL APIs and, when volume calls for it, asynchronous RabbitMQ queues: checkout never blocks and no data is lost if an external system goes down.

I need to integrate systems

Got another question or a specific scenario?

Write it your way. I read and reply personally.

Ask me yourself

Contact

Let's get your project off the ground?

Tell me what you need. I'll reply by email with the next step.

Direct channels

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