About
Tech Lead at Cadastra. 7+ years of professional e-commerce development.
I lead implementation and evolution squads, running VTEX IO and FastStore for major brands. I built cadastra-docs and led the AIvengers Initiative.
Postgraduate student in Software Engineering with Applied AI (UniPDS). Always looking for connections across disciplines.
Based in Petrópolis, RJ.
Stack
Languages
Beyond the code
My obsession is Systems Thinking — understanding how systems work, self-organize and emerge. Code is just one of the lenses; the same logic shows up in organizations, ecosystems and consciousness itself. In practice, this shapes how I structure projects, spot bottlenecks and design architectures.
I study philosophy, theater and music, practice Tai Chi and I'm always trying to learn a new language.
I also write Code Poetry — code you read as literature and run as a program. The structure carries the emotional weight. A missing return isn't just a metaphor — it's literally why the program prints undefined.
Contact
Journey
Cadastra
Aug 2025 – presentTech Lead
Technical leadership of multiple implementation and evolution squads across VTEX IO and FastStore. 20+ projects in the period for global brands and national leaders: B2B with financial integration (Panasonic + Credix CrediPay), O2O marketplace via WhatsApp (Bridgestone), high-volume omnichannel retail (Polishop), FastStore with quiz, loyalty and 50+ CMS sections (Mantecorp Skincare / Hypera Pharma), iHypera and Herbíssimo. I conceived the AIvengers Initiative (53% reduction in dev time using a scientific method) and built cadastra-docs (a centralized technical knowledge base).
EltonLeao Tech LTDA
2026 – presentFounder & Full Stack Developer
My own company. Custom software development, solution architecture consulting and technical training.
Cadastra (ex-Maeztra)
Jun 2024 – Aug 2025Full Stack Developer
Front-end development and integrations for VTEX IO and FastStore e-commerce. Custom React components and GraphQL/Apollo integrations. Cases: Universal Music Brasil (B2C + B2B portal for distributors), Klabin ForYou (B2B+B2C with profile-based rules), TENA Multi-Country (monorepo ~15 apps across BR/AR/PE/CL), Madesa, Jequiti, Cassol Centerlar, Zona Sul Supermercados, Creamy Skincare, Casa do Fitness and For a Better World.
People Interactive Brasil
Jan 2024 – Jun 2024Full Stack Developer (Outsourcing — Zona Sul Supermercados)
Outsourcing placement on the VTEX IO e-commerce team of Zona Sul Supermercados (a traditional RJ chain, 60+ years, 50+ stores). End-to-end work across the full scope of a VTEX IO store: React storefront components (PDP, PLP, Home, Cart, Checkout), Node.js backend apps with GraphQL resolvers, REST integrations, Site Editor, Store Framework, Master Data, analytics Pixel Apps, performance, SEO and troubleshooting.
Vinci Agência Digital
Oct 2022 – Jan 2024Full Stack Developer
Worked in parallel on multiple VTEX (CMS and IO) and WordPress projects with direct client interaction. Integrations, store customizations, performance, UX/UI and conversion strategies. Cases: Otima Gráfica (VTEX IO), Carone (ES supermarket chain), Lecasa (home center), Catharine Hill, Kian Lighting/Store, Metallica Acessórios, Rayco, Rede Elétrica and Refitt.
Maxisite Internet Solutions
Dec 2019 – Oct 2022Full Stack Developer
Software factory with full stack deliveries. Cases: Cartão Fidelidade Digital (PHP web admin + Ionic/Angular mobile app published on the Play Store, with Firebase), 4Unik (PHP + Vue.js), Maxipost (logistics), Viterbo, Laboratório Baffi, Protetic, Village and Wilcos. Onboarding and technical mentoring of new team devs.
Happy Code Petrópolis
Jan – Dec 2019Programming, Games, Robotics & Maker Teacher
Programming, games, robotics and maker teacher for children and teenagers, equipping them with 21st Century Skills through the Lean Education Technology (LET) method. Classes in Scratch and Godot 2D programming, Arduino prototyping, basic electronics, digital art and educational robotics. Lesson planning, learning assessment and developing original projects with students.
Kumon Petrópolis Imperador
Aug 2014 – Jan 2019Math, Portuguese, English & Japanese Tutor
Multidisciplinary tutor in the Kumon self-learning method, supporting students across all four subjects (Math, Portuguese, English and Japanese) over nearly 5 years. One-on-one support, progress tracking and building the first digital tools for internal student and materials management.
Professor Particular
2014 – 2019Physics, Math & Computing
Private tutoring tailored to each student's needs in Physics, Math and Computing (computer use, Office suite and introduction to programming). Focus on conceptual clarity, real problem-solving and building a logical-reasoning mindset alongside my Physics studies.
ILS Brechó (hoje ILS Ateliê)
Dec 2013 – Jan 2019Co-founder & Sole Proprietor
My first business — I opened a fashion company in Petrópolis as a family partnership. Responsible for sales, cashier, inventory, marketing, visual identity and the store's physical operation. The business evolved into ILS Ateliê (party dress rentals), still active today with 3K+ Instagram followers.
Education
Systems Analysis and Development
Estácio
2022 – 2024
Information, Communication and Entertainment Technology
FAETERJ Petrópolis
2018 – 2020
Physics Teaching Degree
CEFET Petrópolis
2014 – 2016
Complementary courses
Next.js com Filipe Deschamps
curso.dev · 2023 – 2024
Ignite (React, Node.js, Java, Elixir)
Rocketseat · 2022 – 2024