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 — natural language over enterprise data
OKškolení chatbot — training knowledge assistant
OKbase web chatbot — multimodal answers with images & YouTube
Release notes chatbot — product documentation Q&A
MPSV chatbot — public-sector knowledge assistant
OKlight DB — lightweight database tooling

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