Khine Zar
Hein.

Founded and launched a production English learning platform for Burmese speakers — a 6-level curriculum covering reading, writing, speaking, and listening, with GPT-4o IELTS band scoring against the student's actual writing, SM-2 spaced repetition built from scratch, and Stripe subscription billing with a manual Facebook-based upgrade path for Myanmar users where Stripe isn't accessible. Launched to the Burmese diaspora community in May 2026 with paying subscribers.

• GPT-4o scoring across all 4 IELTS criteria, referencing the student's actual submitted writing
• Speaking practice — Azure AI Speech scores pronunciation (accuracy, fluency, prosody) through a browser-to-server audio pipeline (WebM→16 kHz WAV via ffmpeg), with GPT-4o grammar and topic feedback
• Listening practice — Azure HD text-to-speech pre-generates multi-voice, IELTS-style audio into Azure Blob Storage, served as static MP3 (cost-aware, no per-request generation)
• SM-2 spaced repetition built from scratch; XP system with daily streaks and weekly goals
• Stripe webhooks for tier control; manual Facebook upgrade path for Myanmar users
• Full-stack: React/TypeScript + FastAPI + PostgreSQL across Vercel, Railway, and Neon with CI/CD

• Porting a Flutter multilingual math-language learning app to React/Next.js + Firebase, preserving all 5 game types and 3 language-assist levels (full translation, on-demand translation, hover-word glossary, and text-to-speech) used with bilingual K-5 learners
• Contributing to an IRB-approved HCI research project on AI-driven personalized multilingual math-language learning in California classroom settings

Technical support and mentorship for students in CodePath's Applied AI course.