Teodor Barča

19 y/o developer

Based in Košice, Slovakia

Teodor Barča

Current favorite stack

  • Python
  • FastAPI
  • LangChain
  • Next.js
  • MongoDB
  • Docker

About me

I'm a developer and entrepreneur with over five years of experience in Python, backend systems, and AI development. I currently lead AI development at Nexana, where I manage a team while actively contributing to the development of advanced legal-tech AI systems.

At 13 I started developing a project that later reached over 150,000 downloads. Since then, I've created City Guesser, an online geography game played by more than 500,000 people, and built an e-commerce brand that grew past the five-figure mark.

Two-time Deutsche Telekom Hackathon winner (2022 & 2024). My work combines deep technical expertise with a focus on scalable, real-world solutions. Always learning, always building, always improving.

Projects

Nexana.ai
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City guesser
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VALORANT rank yoinker
GitHubGitHub
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Reservation System
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AI Korektor
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Awoken
GitHubGitHub
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Flask Starter Kit
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Storyteller
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Paint
GitHubGitHub

Experience

Nexana.ai · Head of AI Development

Sep 2025 - Present · 1 month
Leading the AI division at Nexana, overseeing a team developing advanced legal-tech systems. Driving architecture decisions, research, and implementation of agentic workflows, RAG pipelines, and evaluation frameworks. Focused on building scalable, production-ready AI products that combine technical precision with real-world impact.

Nexana.ai · Senior Python AI Developer

Jan 2025 - Sep 2025 · 9 months
At Nexana, I work at the intersection of legal technology and artificial intelligence, helping build and optimize our AI-powered legal assistant. My role focuses on designing agentic workflows that power complex LLM-driven behavior at scale, utilizing RAG, backend engineering, prompt design, evaluation, and orchestration to create production-ready systems.

E-commerce · Founder

Jan 2025 - Present · 9 months
Built and scaled a five-figure e-commerce business from the ground up. Led everything from product strategy and Shopify development to website infrastructure and automation. Handled logistics, legal compliance, and daily operations while managing a small team to support growth and customer experience.

City Guesser · Founder & Full-Stack Developer

Feb 2024 - Mar 2025 · 1 year 2 months
Developed and scaled City Guesser, an online geography game played by over 500,000 people worldwide. Designed and maintained the application's full-stack architecture, analytics, and backend infrastructure. Focused on scalability, performance, and creating an engaging user experience.

Freelance · Software Developer

Jul 2023 - Sep 2024 · 1 year 3 months
Delivered client projects across AI, backend, and web development. Applied full-stack engineering skills and data analysis to build efficient, high-quality software for businesses and startups.

Deutsche Telekom IT Solutions · Student Software Developer

Jul 2023 - Jun 2024 · 1 year
Student contract position following success at Deutsche Telekom Hackathon 2022. Contributed to projects involving AI applications, and data analysis. Gained valuable experience in corporate software development practices and teamwork.