Building AI products for humans.
Hi, I'm Theara (Vatheara) — a software engineer and AI product builder. I am the founder of KhmerGPT, FotoFast, and Domlai.
My mission is to harness the transformative power of modern artificial intelligence and high-performance web technologies to solve real-world problems. Whether that means delivering localized LLM assistants to Khmer speakers, engineering privacy-preserving vector search algorithms for event photos, or building reliable retail SaaS platforms.
Technical Expertise
A comprehensive overview of the tools, frameworks, and technologies I use to build scalable products.
AI & Machine Learning
Practical AI development, LLM fine-tuning, retrieval systems & computer vision.
Frontend Engineering
Building ultra-fast, accessible, and responsive user interfaces.
Backend & Cloud Edge
Serverless backends, edge workers, and distributed APIs.
DevOps & Tooling
Automated CI/CD pipelines, containerization, and developer velocity.
Journey & Products
Key milestones in designing, building, and deploying software.
Founder & AI Engineer
KhmerGPT ↗Created and scaled an AI conversational platform tailored for Khmer language users, integrating state-of-the-art LLMs, PWA offline caching, and localized AI toolkits.
- Engineered an edge-deployed, real-time streaming AI chatbot with low latency.
- Designed a multi-model fallback strategy ensuring high availability across OpenAI and Anthropic endpoints.
- Built custom prompt templates and localized workflows to assist Cambodian students, teachers, and professionals.
Creator & Architect
FotoFast ↗Architected a privacy-first AI face search platform for marathon and event organizers to deliver photos instantly to participants.
- Implemented client-side face vector embedding generation to guarantee privacy before cloud indexing.
- Optimized vector distance matching on Cloudflare Workers and Vectorize for sub-150ms photo queries.
- Enabled automated photo tagging and gallery generation for high-volume photography events.
Founder & Product Engineer
Domlai ↗Developed a modern retail product catalog and price management system supporting multi-currency exchange rates and automated inventory workflows.
- Built a fast multi-currency (KHR/USD) dynamic price calculator with live exchange rate synchronization.
- Designed responsive inventory barcode search and batch updates for retail staff on mobile devices.
Let's connect and build something impactful.
Whether you have an inquiry, want to discuss an AI project, or just want to say hi.