Work

Selected work.

Most of my day-to-day lives in enterprise private repositories. Here is what I can point to publicly - plus the tools and side projects that show how I build.

ScioBotCo-developed the AI core for an assistant used by teachers - hybrid dense-sparse retrieval (VoyageAI embeddings + BM25 via Manticore and Milvus) over 8M tokenized articles, plus a RAG optimizer and a crowdsourced-annotation processing system. Resilient REST wrapper over Azure OpenAI (Polly), GPT finetuning, and cost optimization, on .NET Core 8 with EF Core, Dapper and MSSQL. 60,000 users, 3,000 schools, AI Awards 2024 - an estimated 11+ years of manual work saved.

Agentic RAGVoyageAI + BM25Manticore · Milvus8M articlesAI Awards 202460k users

OKlab - Agentic Search & enterprise AIAs AI Tech Lead at OKlab (OKsystem): designed and built Agentic Search from the ground up - live demos at FreshIT 2026. On-prem/local LLM security infrastructure, ComplianceAI, SQL agents, and customer-facing knowledge bots across OKsystem products.

Agentic SearchFreshIT 2026On-prem LLMAI Tech Lead

hanakahleova.comBuilt with my mum - a physician and diabetologist - turning decades of evidence-based research on type 2 diabetes & obesity into a platform that reaches and helps far more people. Full-stack build with an agentic-RAG assistant.

Full-stackHealthAgentic RAGFamily project

LLMTornadoCore contributor to the open-source .NET LLM toolkit - 100k+ NuGet downloads, 100B+ tokens processed monthly, 25+ providers unified into one C# API. Agent orchestration, MCP, and vector database integrations.

Open source.NET100k+ NuGetMCPAgent orchestration

SiemensData Scientist & .NET Developer on greenfield enterprise apps - Spark analytics over sales, customer and pricing data, ETL automation and cross-unit data import/export (SSIS), and an internal sales tool (WPF/MSSQL). Playwright and Gherkin test automation for .NET/Next.js products. Bridging data engineering and full-stack delivery in a regulated environment.

SparkETL/SSISWPFPlaywright.NETEnterprise

Case studies

OKlab · FreshIT 2026

Agentic Search

Led design and implementation of OKlab's Agentic Search - an autonomous retrieval system that plans, routes, and executes over enterprise knowledge. Shipped from concept to working demos for FreshIT 2026, with on-prem LLM options for security-sensitive deployments.

Family project · Health

hanakahleova.com

A physician's decades of research on type 2 diabetes and obesity, turned into a platform anyone can use - built full-stack with my mum, including an agentic-RAG assistant grounded in evidence-based content. Proof that technical depth and human mission can live in the same product.

OKlab delivery (2025-2026)

Agentic Search - flagship demo at FreshIT 2026
SQL agent for OKbase - phase 1, natural language over enterprise data
OKškolení chatbot - full delivery: logic, unit tests, security-test adjustments, documentation
OKbase web chatbot - multimodal answers with images, YouTube videos, and okbase.cz content
OKbase translations - transcription
Release notes chatbot - full delivery, Q&A over product documentation
MPSV chatbot - knowledge assistant over Maruška documentation
OKlight - database analysis, design, and build

Planned OKlab projects

Chatbot over OKbase security documentation
Vinodoc chatbot
Release notes chatbot feature expansion
SQL agent completion and evaluation
OKnet chatbot
More per roadmap

Builder projects

Tab triageChrome extension: AI reads open tabs and triages them - keep, save to Obsidian, or close. 200 tabs → structured notes in ~30 seconds. Fully local, open source.

Chrome extensionPKMOpen sourceBuild in public

InfidexEmbedded full-text search engine for .NET - fuzzy search, multi-field weights, faceted search, and Infiscript query language. No separate search server required.

.NETFull-text searchOpen source

libentropyImage compression preserving local density for faster LoRA training (SD3/FLUX and beyond).

C++ML

macenetRobust annotator competence estimation - .NET port, adversarial-resistant.

Open source.NET

instinctEvolutionary agent for Snake - variation, mutation, and selection across generations.

PythonEvolutionary algorithms

Toolbox

Languages: Python · C# · TypeScript · C++
AI & Agents: Agentic Orchestration · Context Engineering · Agentic RAG · LangGraph · LangChain · LLMtornado · NLP
Full-stack: .NET · React · Blazor · NestJS · PostgreSQL · MSSQL
Data & Automation: Pandas · Spark · Playwright · Web scraping · Jupyter
Everyday toolbox: Git · Docker · Linux · Azure

Technologies I work with daily

Python · C# · TypeScript · LangGraph · LLMTornado · Playwright · Spark · PostgreSQL · .NET · React · Azure · Docker