William – Python, React, Typescript

AI-powered educational platform serving thousands of students, providing personalized learning experiences and infrastructure for student progress, assessments, and learning analytics.

• Contributed to the development and scaling of an AI-powered educational platform;
• Implemented RAG pipelines to improve AI responses with accurate historical context grounded in curated knowledge sources.

Technology and product development studio delivering custom software, AI/ML, data science, and digital product solutions for startups and enterprise clients.

• Developed an AI-powered interactive avatar system for an education client, integrating LLMs and real-time rendering to create engaging learning experiences with historical figures;
• Built a high-performance API in Go achieving 30+ FPS rendering across multiple resolutions, with advanced lip-sync capabilities and real-time AI response generation;
• Implemented RAG pipelines to enhance avatar responses with accurate historical context grounded in curated knowledge sources;
• Optimized the model inference pipeline, reducing latency by 40% through efficient caching strategies and API design.

Health-tech platform enabling health and fitness coaches to manage and scale their online coaching businesses through digital tools, client management, and business automation.

• Led a cross-functional team of 5 engineers and 1 designer to deliver a live-streaming feature for the mobile app, enabling real-time interaction between coaches and clients;
• Architected and maintained the React Native codebase for iOS and Android, delivering complex features while ensuring performance and a consistent user experience;
• Led implementation of behavioral pattern recognition and predictive goal-tracking features, including the Tiny Habits framework, rolled out across the full client base;
• Integrated Google Fit and Apple Health APIs and built data pipelines supporting personalized health insights and recommendations;
• Partnered with designers to establish a company-wide design system using Storybook, improving development velocity by 30% and ensuring consistent UI/UX across products.

AI-focused healthtech company developing clinical and conversational AI solutions, including patient-facing mobile applications, chatbots, and scalable AI-powered services for healthcare and enterprise clients.

• Built a customer-service chatbot for a major automotive company in Brazil, deployed across Facebook, WhatsApp, and web channels;
• Developed Android and iOS applications for a major Latin American cancer center, supporting patients undergoing immunotherapy treatment;
• Scaled AI-powered applications to support increasing data volumes and throughput using a microservices architecture;
• Implemented Redis caching across new and existing services, reducing database load and improving response times;
• Improved installation and support processes to enable more efficient onboarding of new integration partners.