Vinicius
Kawamoto

Leading frontend development for secure digital signing solutions:

• Lead frontend development for Notary Tool application enabling secure digital signing for notaries and witnesses
• Delivered new features and bug fixes for Admin Portal improving usability and reducing operational bottlenecks
• Assisted in implementing and optimizing Single Sign-On (SSO) features for seamless authentication across systems

Developed AI-powered tools for financial insights and project estimation:

• Developed AI-powered tools: a financial data query engine and a project estimation system calculating time and cost from weighted feature complexity
• Designed intuitive UIs ensuring high adoption rates and ease of use across diverse clients including Reddit
• Collaborated with backend teams to ensure API scalability and 99.9% uptime

Full ownership of UI/UX design and performance optimization:

• Took ownership of UI design in Figma, crafting layouts from scratch in the absence of a designer
• Implemented scalable component architecture aligned with a design system
• Improved TTI by 28% through lazy loading, bundle optimization, and targeted performance tweaks
• Increased Lighthouse Performance Score from 67 to 89

Optimized e-commerce and kiosk platforms for premium food delivery:

• Built and optimized e-commerce and self-service kiosk features
• Increased component reusability across platforms by ~40%
• Enhanced search performance using Algolia InstantSearch, cutting query latency below 200ms

Led enterprise-level development contributing to 724% company revenue growth:

• Led architecture for enterprise features, contributing to 724% company revenue growth
• Delivered a React Native + Expo app, reducing launch time by ~40% and achieving a 4.7★ rating
• Refactored to micro-frontend architecture, boosting performance and modularity
• Redesigned account manager flow, reducing edge-case bugs by ~70%
• Published a React component library with 85%+ test coverage

Designed enterprise application architecture and secure APIs:

• Designed enterprise application architecture using React.js, React Native, Redux, Node.js, and MongoDB
• Created secure APIs to prevent duplicity in loyalty programs
• Deployed applications on AWS EC2 and published to app stores

Co-led gamified EdTech platform with AI-powered features:

• Co-led development of a gamified EdTech platform with real-time classroom interaction
• Built responsive admin dashboards and mobile apps for teachers and students
• Built an AI-powered ranking system, increasing student engagement and retention by over 60%
• Developed scalable Node.js APIs ensuring 99.9% uptime
• Used Redux Saga for modular state management and smooth UX

Built internal tools and integrated external systems:

• Built internal tools to manage AWS environments and CMS deployments
• Integrated DevPanel with Redmine to automate cross-platform sync and remove duplicate content
• Cut onboarding time for new projects through streamlined tooling

Built mobile apps and automated workflows for critical infrastructure:

• Built mobile app for offline sensor data collection with custom sync, eliminating data loss
• Automated workflows for Itaipu Hydroelectric Plant, increasing operational efficiency
• Created a real-time election dashboard for internal voting with audit logging

Developed secure GovTech systems and project management solutions:

• Developed secure GovTech systems for the Navy, Air Force, and Ministry of Defense
• Created e-Take, an eco-friendly event solution replacing printed materials
• Built a PMBOK 5-aligned project management system improving cross-team alignment
• Delivered high-security systems generating R$17M+ in revenue