Available for opportunities

Bartosz
Kołodziejczyk

AI Engineer  ·  Software Developer  ·  Kielce, PL

Building 

Passionate software engineer specializing in AI-powered applications. From LLM orchestration and document intelligence to scalable microfrontend architectures — I bridge the gap between cutting-edge AI and production-ready software.

Explore AI Work Get in Touch
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🧠
LLM Integration
OpenAI · Ollama · Azure AI
🔗
AI Orchestration
LangChain · LangFlow · Agents
📄
Document AI
OCR · Q&A · Comparison · Classification
🐍
AI Backends
FastAPI · Python · RAG pipelines

About me

AI-first engineer with full-stack DNA

I build AI-powered systems that look like they're working — until they don't.
And that's exactly the problem I'm solving.

I'm a Software Engineer focused on integrating LLMs and AI into real-world applications — not demos, not prototypes, but production systems that people actually rely on.

💡 What I work on:

→ AI-driven document systems (Q&A, comparison, OCR, classification)
→ Agentic workflows using LangChain / LangFlow
→ LLM integrations (OpenAI, Azure AI, Ollama)
→ FastAPI backends powering AI features

🧠 My background:

→ React & Angular (microfrontends, Nx, scalable architectures)
→ Building large, reactive systems (RxJS, Form.io)
→ Designing end-to-end solutions — from UI to AI backend

I enjoy working on problems where AI meets real-world complexity — especially where reliability, scalability, and usability actually matter.

5+
Years shipping software
4yr
AI engineering focus
3
AI certifications
∞
Lines of prompt-engineered Python

Core expertise

What I build with AI

📑
Document Intelligence
End-to-end pipelines that turn static documents into interactive data sources. Users can ask questions, compare versions, auto-classify types, and extract structured fields — all without touching a line of document logic.
Document Q&A Comparison Classification OCR Azure AI
🔗
LLM Orchestration & Agents
Designing multi-step AI workflows using LangChain and LangFlow — chaining models, tools, and memory to create autonomous agents that reason through complex tasks and return actionable results.
LangChain LangFlow Agentic AI RAG OpenAI
🏠
Local & Private AI
Running LLMs on-premise with Ollama for sensitive enterprise data that cannot leave the organization. Building the same rich AI experiences without relying on cloud APIs — full control, full privacy.
Ollama Local LLMs On-premise AI Privacy-first
⚡
AI-Powered APIs
FastAPI services that expose AI capabilities as clean, typed REST endpoints — making it trivial for frontend teams and third-party systems to consume document extraction, semantic search, and classification at scale.
FastAPI Python Semantic Search Embeddings
🎓
Generative AI for Dev
Certified in Generative AI for Software Development — applying GenAI techniques to accelerate development cycles, automate code review patterns, and embed AI-assisted features directly into developer tooling.
GenAI Code Generation AI-assisted Dev
🤖
Agentic Systems
Building autonomous agents that plan, use tools, and self-correct — going beyond simple chatbots to create systems that can handle multi-step tasks with minimal human intervention, including tool-use and memory.
Tool Use Memory Planning Multi-step

Tech stack

Skills & Technologies

🤖 AI / LLMs
OpenAI API Azure AI Ollama LangChain LangFlow RAG Agentic AI Prompt Engineering OCR Embeddings
⚛️ Frontend
React Angular JavaScript TypeScript RxJS Redux Nx.js Microfrontend Material-UI Tailwind CSS Ant Design Form.io
🐍 Backend
Python FastAPI Django Node.js REST APIs Keycloak Flowable
🏗️ Architecture & Tools
Microfrontend Monorepo GitLab Jira Agile / Scrum Docker

Work history

Experience

Software Developer Oct 2025 — Present
Industrial Enterprise · Full-time
  • Building an AI Agent capable of autonomously handling multi-step tasks — leveraging tool use, context memory, and dynamic planning to automate complex business workflows.
  • Developing an AI-powered chat interface integrated with LLM backends, enabling natural language interaction with internal systems and documents.
  • Working within a React Nx monorepo — maintaining shared libraries, enforcing module boundaries, and scaling a microfrontend architecture across multiple teams.
  • Beginning hands-on work with Node.js — building lightweight backend services and API layers to complement the frontend and AI integration layer.
Software Developer Feb 2025 — Dec 2025 · 11 mos
Software House · Full-time
  • Designed and developed scalable React and Angular applications using Nx.js monorepos and microfrontend architecture.
  • Built custom UI component libraries with Material-UI and Tailwind CSS; advanced state management via RxJS/Signals.
  • Dynamic form generation with Form.io across enterprise Angular apps.
  • Close collaboration with designers, backend, and QA in Agile sprints via GitLab & Jira.
Software Engineer — AI & Web Technologies Jan 2021 — Jan 2025 · 4 yrs
⚡ Core AI engineering role
IT Consulting & Software · Full-time
  • Integrated Azure AI (OCR), OpenAI, and Ollama to deliver production-grade document Q&A, document comparison, OCR pipelines, and automatic type recognition.
  • Designed and built LangChain & LangFlow workflows enabling efficient, multi-step AI processing for business documents at scale.
  • Engineered FastAPI backends in Python, exposing AI features as clean REST APIs consumed by frontend teams.
  • Implemented local LLM deployments via Ollama for privacy-critical enterprise scenarios where data couldn't leave the network.
  • Developed modern React microfrontend applications using Nx.js; large-scale Angular projects with RxJS and Form.io.
  • Managed auth and workflow orchestration via Keycloak and Flowable in distributed systems.
Frontend Developer Oct 2019 — Jan 2021 · 1 yr 4 mos
Software Agency · Kielce, Poland
  • Developed and maintained large-scale web apps with React and Redux; RESTful API integration.
  • Occasionally contributed to Django-based backend features.
  • Agile workflow, code reviews, sprint planning. Version control via Bitbucket.

Credentials

AI Certifications

🤖
Agentic AI
Autonomous agents, tool use & planning
✨
Generative AI for Software Development
GenAI techniques applied to dev workflows
🐍
AI Python for Beginners
Python fundamentals for AI applications

Let's build something

Get in Touch

Open to new AI & software opportunities

Working on an AI product? Need someone who can go from LLM prompt design all the way to a polished frontend? Let's talk.

[email protected] LinkedIn