Senior Fullstack Engineer · Principal Engineer on Selected Projects

Brazil

Software company focused on HR technology and SaaS products. Acts as the principal engineer on selected initiatives, owning architecture and delivery while coordinating directly with clients and the engineering team.

• Led CardClinic from zero to production, covering product discovery, client communication, technical architecture, team direction, frontend, backend, data modeling, infrastructure, and deployment.
• Built the CardClinic web application with React, TypeScript, Tailwind CSS, Zustand, React Router, Axios, and i18n; developed its API with Node.js, NestJS, PostgreSQL, Prisma, and Swagger.
• Provisioned and configured the product's DigitalOcean VPS infrastructure from scratch and owned the production deployment path.
• Served as a TOTVS technical consultant, supporting client companies and delivering custom integrations across TOTVS and HubSpot ecosystems, including data synchronization, workflow automation, and backup services.
• Developed an HR video-interview platform and an AI evaluation workflow that transcribed recorded interviews, processed them with an agent, and generated structured feedback and candidate scores.
• Used LangChain and LangGraph to build stateful agent workflows coordinating model interactions, tools, retrieval, and multi-step business processes.
• Integrated AI agents with Meta messaging channels, enabling contextual and automated conversations through WhatsApp, Messenger, and Instagram Direct.
• Built a private enterprise AI platform for organizations with strict LGPD and data-residency requirements, allowing sensitive workloads to run without sending data to external model providers.
• Helped fine-tune a Qwen model on legal-domain data and designed document-processing and RAG pipelines that converted company files into indexed, AI-ready knowledge bases.
• Adapted model selection and deployment to customers' available hardware, supporting fine-tuned or base models according to infrastructure constraints.

Senior Fullstack Engineer

Remote · Boston, MA, USA

Contributed to Oppy, an AI-powered CRM and digital assistant for the U.S. real estate market.

• Built product capabilities that combined specialized AI agents, customer context, CRM workflows, and retrieval-augmented generation.
• Developed responsive frontend experiences with React, TypeScript, Redux, and Material UI and contributed to backend services using Ruby on Rails, Python, TypeScript, and Go.
• Integrated Twilio-based real-time calling and conversational AI to support automated lead engagement and virtual-assistant workflows.
• Connected AI assistants with CRM data, calendars, telephony, lead qualification, and scheduling processes while preserving context across interactions.
• Supported deployment, CI/CD, and production infrastructure on Google Cloud Platform while collaborating with a distributed U.S. team.

Fullstack Engineer

Brazil

Software consultancy specializing in white-label digital banking and financial products. Moved across strategic projects in CRM, high-traffic commerce, payments, blockchain, and serverless banking.

• Built and orchestrated LLM-powered workflows with Python, LangChain, and LangGraph, including stateful agent flows and tool-driven processing.
• PaGol Digital Bank: served as a senior fullstack engineer on GOL's banking product, contributing to a modified hexagonal architecture built with AWS Lambda, RDS/PostgreSQL, Secrets Manager, CloudWatch, TypeORM, feature flags, React Native, Next.js, and Tailwind CSS.
• DocTrust: selected through an internal blockchain initiative to build a decentralized notarization platform in Solidity, registering document hashes on-chain to enable durable authenticity verification.
• Banco VR and Cartão Hoje: implemented PIX payment journeys in React Native applications with Redux and React Testing Library.
• Cinemark Latin America: developed frontend and backend capabilities for movie tickets, seat reservations, and concessions; contributed to a caching strategy that reduced backend demand during overnight periods.
• Protest: delivered CRM features for condominium management using React, Redux, Tailwind CSS, React Router, Node.js, TypeORM, PostgreSQL, and Swagger.

Senior Software Engineer · Mobile / Fullstack

Brazil

Joined a specialized eight-person engineering response team responsible for unblocking product teams, resolving critical production issues, supporting infrastructure, and delivering cross-platform initiatives.

• Helped launch and evolve a major Brazilian telemedicine platform used by more than 1 million people.
• Integrated AI-assisted experiences and Vonage video conferencing into mobile applications for remote consultations.
• Designed reusable white-label telemedicine SDKs that enabled hospitals and customers to embed complete consultation experiences inside their own native applications.
• Built native bridges and modules across React Native, Swift, Objective-C, Kotlin, and Java, and contributed to a hybrid React Native and Flutter initiative.
• Created Tracking Interceptor, a reusable error-interception and observability library for browser, React Native, Node.js, and API gateway environments.
• Supported production reliability through push notifications, WebSockets, Docker, AWS, Firebase/CodePush, DataDog, feature flags, and hands-on incident response.

Fullstack Engineer

Brazil

Worked as a versatile engineer across industrial, energy, cement, and oilfield products for a large engineering and software consultancy.

• Baker Hughes: became the primary iOS engineer for a mission-critical oilfield positioning application after learning Objective-C and Storyboard for the assignment. Restored the system during an emergency on-site weekend, enabling a scheduled customer demonstration to proceed.
• Raízen / Shell: developed real-time dashboards for fuel-blending and transportation telemetry using Vue.js, Vuex, Apollo GraphQL, Node.js, Python, Pandas, PostgreSQL, and Docker.
• Hydroelectric operations: built Angular and C# dashboards that gave engineers visibility into generation metrics, charts, and operational values.
• Votorantim Cimentos: contributed to the VCMS mobile application, providing production data, engineering calculations, and operational visualizations for cement facilities.

Frontend Engineer

Remote · Portugal

Built e-commerce products for European markets with an emphasis on international SEO, performance, multilingual experiences, and reusable frontend architecture.

• Delivered the complete frontend for Sensation.fit, an online fresh-produce retailer serving European customers.
• Implemented applications with React, Next.js, Gatsby, TypeScript, Redux, Chakra UI, Styled Components, Atomic Design, Axios, and i18n.
• Contributed to React Native projects and automated delivery pipelines using GitHub Actions, Bitbucket, and Git-based workflows.

Technical Lead · Junior Fullstack Developer · Frontend Intern

Brazil

Progressed from Frontend Intern to Junior Fullstack Developer and then Technical Lead as responsibilities expanded across backend engineering, architecture, delivery, and team leadership.

• Led a government mobile application for the Municipality of Alumínio from project initiation through frontend and backend development, deployment, and production release.
• Built web and mobile products for municipalities and private organizations using HTML5, CSS3, JavaScript, jQuery, Bootstrap, WordPress, AngularJS, Ionic, React, Gatsby, Redux, PHP, Node.js, Express, AdonisJS, MySQL, PostgreSQL, and SQLite.
• Developed authentication, authorization, CRUD modules, and REST APIs; produced technical documentation in Markdown and coordinated Git-based Linux deployments.

Software Engineering Intern

Brazil

Began professional software development by building and maintaining websites and web applications.

• Built and maintained websites and web applications with HTML, CSS, JavaScript, jQuery, AJAX, Bootstrap, WordPress, PHP, and MySQL.
• Contributed to REST integrations, responsive interfaces, technical documentation, and digital assets using Adobe Photoshop.