Márk Csizmadia

CV

Machine learning engineer with six years of experience shipping production ML and GenAI systems in fintech and e-commerce. Based in Stockholm, from Budapest, previously Manchester.

Main roles and studies only. Full profile on LinkedIn.

Experience

  1. Aug 2025 – Present

    Machine Learning Engineer

    Trustly · Stockholm, Sweden

    • Real-time machine learning for fraud detection on pay-by-bank payments.
  2. Dec 2022 – Aug 2025

    Machine Learning Engineer

    Sellpy · Stockholm, Sweden

    • Production ML, recommendations, and MLOps for second-hand e-commerce.
    • Vector search over image and text embeddings for real-time personalization.
    • Led a garment size-extraction system (LLMs) aimed at cutting size-related returns.
  3. Aug 2020 – Dec 2022

    Machine Learning Engineer

    Ecobloom · Stockholm, Sweden

    • Distributed GCP pipelines and deep learning for plant leaf detection and stress recognition.
    • Helped stand up the first B2B and B2C products and presented the ML work for a $400k first round.
  4. Sep 2018 – Aug 2019

    Research and Development Engineer

    Nexperia · Manchester, United Kingdom

    • Python simulation and analysis software for semiconductor device design, plus manufacturing-data insights.

Education

  1. 2020 – 2022

    MSc, Machine Learning

    KTH Royal Institute of Technology · Stockholm, Sweden

    • Thesis: Semi-Supervised Plant Leaf Detection and Stress Recognition, supervised by Prof. Josephine Sullivan.
    • Teaching assistant, DD2424 Deep Learning in Data Science.
  2. 2016 – 2020

    BEng, Electronic Engineering, First-Class Honours

    The University of Manchester · Manchester, United Kingdom

    • Final-year project: real-time object detection on an NVIDIA Jetson Nano for a robotic arm, supervised by Prof. Hujun Yin.