Roberto Yamanaka
Full Stack Engineer building developer tools and AI-powered products.
About
I ship production-grade products end-to-end. 5+ years across AI, Web3, and Mobile. I've built SDK ecosystems, real-time AI agents, and led teams from zero to production.
Core stack: TypeScript, React/Next.js, Python, React Native/Expo.
Work Experience
Chipi Pay
Lead Developer
- Architected composable TypeScript SDK ecosystem for Starknet wallet infrastructure used by 20 startups
- Built developer dashboard, comprehensive docs, and mobile wallet app deployed to App Store
- Created MCP server enabling AI-assisted wallet development through natural language
SiSoy
Lead Developer
- Built ISO 27001-compliant digital identity platform from zero
- Led team of 5 engineers through full product lifecycle from requirements to production deployment
- Reduced bug reports 50% and improved page load times 50%
Deep Dive
Data Engineer
- Designed and deployed serverless data pipelines processing 100k+ government documents using AWS Lambda, Databricks, and SageMaker
- Built AI-powered platform extracting insights from handwritten anthropological reports using OCR, NLP, and CLIP embeddings
Arel
Co-Founder & Technical Lead
- Built and launched mobile app for security guard management, acquiring 20 paying B2B customers
Education
Mexico's Autonomous Institute of Technology (ITAM)
Skills
Projects
LangWaifu
Real-time Japanese learning app with AI voice agents (STT→LLM→TTS) and reactive 3D anime character. Live on App Store with 6 months production runtime.
StarkPay
Crypto payment app with NFC support for merchant transactions. Winner at Ethereum Latam Hackathon.
WaPHL
NLP tool transforming natural language into TheGraph API queries. Winner at Ethereum Mexico.
Loope Gift Club
Growth platform that delivered personalized gifts to 4,000+ users for brand awareness campaigns.