Resume

Here's an overview of my professional journey, skills, and experiences. Feel free to download my full resume or explore my past experiences.

Leonardo Silvatti Silva

Senior Front-End Engineer | Tech Lead | React, Next.js, TypeScript

Location: Bauru, SP, Brazil (GMT-3) • Phone: +55 14 99678-3741 • Email: leonardo@silvatti.com.br LinkedIn: linkedin.com/in/lsilvatti • GitHub: github.com/lsilvatti • Portfolio: leonardo.silvatti.com.br

PROFESSIONAL SUMMARY

Senior Front-End Engineer and Tech Lead with 7+ years of experience designing scalable, high-traffic web platforms. I specialize in the modern JavaScript ecosystem (React, Next.js, TypeScript, Zustand) and have a strong track record of migrating legacy systems, optimizing Core Web Vitals, and building robust UI architectures. Driven by product growth and team efficiency, I have managed technical roadmaps, mentored developers, and integrated AI-augmented workflows (Claude, Cursor) to accelerate frontend engineering velocity by 30% while maintaining strict code quality and accessibility standards.

CORE COMPETENCIES

  • Frontend Development: React, Next.js (App Router), TypeScript, JavaScript (ES6+), Zustand, React Query, Tailwind CSS, SASS, Component Architecture, Core Web Vitals, Technical SEO (JSON-LD), Accessibility (WCAG).
  • Quality Assurance: Jest, Cypress, React Testing Library, Storybook.
  • Integrations & Delivery: REST APIs, GraphQL, Server Actions, GitHub Actions, Docker, Cloudflare, Vercel, CI/CD, Git.
  • Leadership & Product: Technical Roadmap, Agile/Scrum, Stakeholder Management, Team Mentoring, Code Review, AI-Augmented Development (Claude, Cursor, Copilot).
  • Languages: Portuguese (Native), English (C2 Proficient - EF SET), Spanish (Intermediate).

PROFESSIONAL EXPERIENCE

Trustly | Remote / Brazil

Frontend Developer | May 2026 - September 2026

  • Engineered the core payment widget utilizing React, Next.js, and TypeScript, consuming complex API endpoints to support transaction flows processing over 1.3 billion operations monthly.
  • Optimized checkout flow performance, improving Core Web Vitals (LCP and CLS) by 15%, ensuring stability for over 9,000 merchant partners.
  • Architected automated testing pipelines via GitHub Actions using Jest and Cypress, achieving 88% code coverage and preventing UI regressions in critical financial journeys.

eSapiens Technology | Remote / Brazil

Tech Lead / Product Owner | January 2025 - February 2026

  • Managed the frontend technical roadmap, ensuring architectural alignment between engineering, design, and business stakeholders.
  • Streamlined agile processes and eliminated technical blockers, increasing the team's UI delivery velocity by 15%.
  • Introduced AI-augmented workflows utilizing Claude and Cursor to accelerate frontend boilerplate generation and complex API integrations, accelerating development by 20%.

Frontend Developer | July 2021 - January 2025

  • Architected and led the migration of the Astrolink platform from legacy AngularJS/PHP to a modern React and Next.js stack, serving over 15 million users and significantly improving SEO and Core Web Vitals.
  • Developed a core monetization feature (One-Time Sale) from concept to launch, contributing to a 20% increase in monthly revenue.
  • Engineered reusable, accessible UI components using TypeScript and SASS, improving team delivery speed and design consistency.

Alternativa Systems | Bauru, Brazil

Frontend Developer | March 2021 - July 2021

  • Engineered the cloud-based web version of a desktop ERP system utilizing Next.js and SASS, migrating core modules and improving system accessibility.
  • Modernized internal operational tools using Vue.js, optimizing internal workflows and increasing product management efficiency.
  • Integrated RabbitMQ workflows for asynchronous data processing to support over 100 enterprise clients.

Cocreare | Bauru, Brazil

Junior Frontend Developer | January 2020 - March 2021

  • Built and deployed responsive web and mobile applications using React Native, Ionic, React, Vue, and Angular, delivering 10+ client projects within deadline.
  • Collaborated closely with design teams to translate high-fidelity Figma and Adobe XD prototypes into production-ready frontend code, achieving 90% design accuracy.

RECENT PROJECTS

Jornada da Psique (ajornadadapsique.com.br) | 2026

  • Architected and developed a modern blog and web application utilizing Next.js (App Router) and Tailwind CSS.
  • Integrated Sanity as a headless CMS for scalable content management and implemented strict technical SEO practices, including JSON-LD structured data.

Autoria Marginal (autoriamarginal.com.br) | July 2026

  • Full-stack web application built to distribute an illustrated copyright guide.
  • Developed utilizing Next.js and Server Actions for backend logic without a decoupled API, managing database mutations with Supabase.

Personal Portfolio Web Platform (leonardo.silvatti.com.br) | March 2026

  • Architected and developed a high-performance personal portfolio utilizing React, Next.js, and TypeScript.
  • Deployed via Vercel with a focus on component architecture, modern responsive UI, and technical SEO optimization.

EDUCATION

Bachelor of Computer Science, São Paulo State University (UNESP) | Bauru, Brazil | 2016 - 2022

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