Khant Si Thu (Brian)

Impact

organizations on OKCHAT v2

1,061

organizations on OKCHAT v2

monthly AI conversations

25K+

monthly AI conversations

LLM cost reduction via routing

35%

LLM cost reduction via routing

RAG answer accuracy

95%

RAG answer accuracy

courses generated on LEIA

1,564

courses generated on LEIA

Experience

1. AI Engineer · DASOMX

   Sep 2024 – Present

   Full-time Contract · Remote (South Korea)

   • Lead engineer across five AI products; sole engineer on LEIA and primary engineer on OKCHAT v2, owning architecture, AI systems, infrastructure, and production operations.
   • Built OKCHAT v2, a multi-tenant chatbot platform serving 1,061 organizations and 25K+ monthly conversations; reduced LLM costs by 35% through routing and fallback across five providers.
   • Designed RAG and hybrid RAG with rerankers over 10K+ documents, achieving 95% answer accuracy; built asynchronous document ingestion pipelines with RabbitMQ queues and workers, plus dataset-driven evaluation harnesses.
   • Extended OKCHAT with MCP tools, Slack and Discord bots, and Python LiveKit voice agents supporting web search, knowledge-base retrieval, and dynamic API tools.
   • Built LEIA, an AI learning platform with source-grounded course, quiz, and podcast generation, AI tutors, and real-time voice; 1,564 courses for 1.4K+ teachers and learners.
   • Architected LEIA’s distributed backend with BullMQ job queues, asynchronous workers, and Durable Functions on Azure Container Apps; scaled workers with KEDA, automated deployment with Terraform and GitHub Actions, and traced API-to-worker jobs with OpenTelemetry.
   • Delivered a LangChain/Pinecone RAG chatbot for TalkCRM and a LangGraph purchase-order agent for MES; established the ontology schema and first end-to-end root-cause analysis demo for Dongkuk Steel.
   RAGMCPLiveKitLangGraphRabbitMQBullMQAzure Container AppsKEDATerraformOpenTelemetryAWS

2. Full Stack Engineer · Viabells

   2024

   Remote (Singapore)

   • Built Node.js/TypeScript microservices for SDAX, a global private-markets investment platform, using Express, MongoDB, RabbitMQ, AWS, Docker, and Kubernetes; reduced page load times by 40%.
   • Led progressive web app development for TEE-Up, a career platform for students and young adults, with Next.js, Prisma, and MySQL.
   Node.jsTypeScriptMicroservicesMongoDBRabbitMQKubernetesNext.jsPrisma

3. Full Stack Engineer · Beyond Limits Technology

   2023 – 2024

   Yangon, Myanmar

   • Delivered client web applications and a progressive web app with React, Next.js, TypeScript, Node.js, NestJS, Strapi, and Astro for clients in education, hospitality, and logistics.
   • Optimized application performance and SEO with server-side rendering.
   ReactNext.jsNestJSStrapiAstroSSR

Skills

Education & Certifications