Pingo AI
Live in productionUS ยท San Francisco ยท Consumer AI / EdTech
Pingo AI is a YC-backed conversational language-learning app โ instead of drills and vocab lists, learners practice real-time spoken conversations with an AI partner across 25+ languages, with pronunciation and delivery corrected mid-conversation. As part of the contract engineering team, we worked across the mobile app, the backend, and the conversational AI integration โ shipping feature work end to end rather than owning a single layer. Pingo is used by 6M+ learners and rated 4.8 on the App Store and Google Play.
MY ROLE
Contract full-stack engineering
STACK
Mobile ยท Conversational AI ยท Feature engineering
STATUS
Live in production
LIVE URL
pingo.ai
Real screens, not mockups
What the system does
Real-time spoken practice
Full-stack work on the core conversation loop โ talk with Pingo in 25+ languages and get pronunciation and delivery corrected mid-conversation.
Adaptive learning paths
Feature work on the system that adapts each learner's path and remembers their level, mistakes, and goals between sessions.
Custom roleplay scenarios
Built out scenario-based conversation flows โ from a first hello in Korean to a mock interview in Japanese โ so practice matches what a learner actually needs.
Mobile app delivery
Shipped features across the iOS and Android apps that now serve 6M+ learners at a 4.8 rating.
Stack
- Mobile App Development
- Conversational AI Integration
- Feature Engineering
Where it stands
- Role
- Contract engineer across mobile, backend, and AI integration
- Scale
- 6M+ learners, 4.8 rating on the App Store and Google Play
- Status
- Live in production, YC-backed
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