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hajdul88/README.md

László Hajdu

Founder @ SeriousNode  ·  Researcher @ InnoRenew CoE  ·  ex-Founding Engineer @ cognee

AI engineer, researcher, data person. Side quest: turning other people's vibe-coded spaghetti into production

LinkedIn   Google Scholar


16.9k ★ on open source  ·  10+ years building ML in production  ·  8+ years in academic research


01  /  Now

SeriousNode AI infrastructure built to work in production
InnoRenew CoE  ·  University of Primorska Researcher & Assistant with PhD. Optimization, network science, and explainable ML applied to knowledge representation, epidemiological modeling, and public-transport routing.

02  /  Selected experience

cognee  ·  2024–2026 Built the spine of the platform: retrieval and ontology reasoning, the internal Rust orchestrator, distributed pipeline, agent tracing, and the evaluation framework + some of the integrations. 16.9k ★ · 1.8k forks.
Egis Pharmaceuticals  ·  2021–2024 Owned the advanced-analytics roadmap end to end. Shipped pricing-strategy optimization model, sales forecasting, field-rep routing, and the behavioural analytics behind a patient-facing mobile health product.
FRISK IT Solution  ·  2021–2023 Technical lead during a build-out phase. Drove the fraud-detection R&D track, scoped and supervised subcontracted delivery, and ran technical due diligence in front of industrial buyers.
Andego  ·  2017–2019 Designed and built the detection core of a fraud system that went into production at a major Hungarian financial institution — modeling, feature engineering, and the handoff to ops.

03  /  Research focus

Optimization & Heuristics  Graph Theory  Knowledge Graphs  Explainable AI  Fraud analytics  Epidemiological modeling  Public-transport optimization  IoT pipelines


04  /  Recognition

  • 1st place — ACM Programming Contest
  • Special Award — SedCup Programming Contest

Based in Europe  ·  Open to research collaborations and genuinely hard problems

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  1. topoteretes/cognee topoteretes/cognee Public

    Cognee is the open-source AI memory platform for agents. Give your AI agents persistent long-term memory across sessions with a self-hosted knowledge graph engine.

    Python 26.2k 2.4k

  2. topoteretes/cognee-community topoteretes/cognee-community Public

    Repo for community managed plugins and addons for cognee.

    Python 60 60