David Slavik

Hello!

I'm David Slavik.

Software Developer

About Me

I’ve been tinkering with computers since I was six years old, which soon led to a passion for Information Technology.

I currently work as a Researcher / AI Engineer at the AI Lab of the Faculty of Organisation and Informatics, where I work on an AI project integrating OCR and NLP for document processing and automation powered by LLMs.

I have hands-on experience in Frontend Development, Backend Development, Machine Learning, and building RAG pipelines.

Big time coffee lover. In my free time I love to read comic books, listen to some golden age hip-hop and watch movies.

About me graphic

Experience

Oct 2025 — Present

Researcher / AI Engineer · AI Lab @ Faculty of Organization and Informatics

Varaždin, HR

As part of an AppAI project, I'm working on an AI pipeline integrating OCR and NLP for document processing, extracting text and layout, converting to Markdown, and structuring information into JSON outputs. Working with LLMs to enhance information retrieval and processing workflows.

PythonHaystackLM Studio

Aug 2025 — Sep 2025

AI Engineering Intern · AI Lab @ Faculty of Organization and Informatics

Varaždin, HR

Built a prototype AI pipeline integrating OCR and LLMs through Haystack to extract both text and layout of documents, convert it into Markdown, and perform information extraction into structured JSON outputs.

PythonHaystack

May 2024 — Jan 2025

Frontend Developer · IPC

Čakovec, HR

Contributed to developing front-end for a parking monitoring & management system.

JavascriptReactDocker

Jul 2024 — Sep 2024

Frontend Developer · QLECTOR

Ljubljana, SI

Erasmus+ internship. Developed smaller features and fixed bugs in a React-based AI manufacturing planning app. Assisted in migrating the codebase from JavaScript + Flow to TypeScript — gaining experience with typed systems.

JavascriptFlowTypescriptReactDocker

Oct 2022 — Jan 2023

Frontend Developer · IoT Lab @ Faculty of Organization and Informatics

Varaždin, HR

Contributed to developing front-end for a smart lock system used in Faculty rooms.

JavascriptReact

Projects

College Project

Mar 2023 — Mar 2023

laGGer – Game streaming platform

Worked on new functionalities of an existing game streaming PoC project: remote game runtime, streaming, chat.

HTMLCSSJSnoVNCDockerPython

Karlo Hajdinjak, Teodor Kolar, David Slavik

College Project

Oct 2022 — Jan 2023

Smart Lock

Worked on expanding features of an existing smart lock system used in Faculty rooms. Technology stack includes: React frontend, NodeJS + MongoDB backend, REST and MQTT architecture.

ReactC/C++PlatformIONodeJSMongoDBDocker

Teodor Kolar, Karlo Hajdinjak, Ivan Kerovec, David Slavik