Stefan Fersch
Data Annotator, QA, QC, Language Expert
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Why should you work with me ?

My name is Stefan Fersch, I am 32 years old, and I am a German native with a diverse background in healthcare, store management, data annotation, and more. I have honed my skills through various roles, including my time as a caregiver for disabled and mentally ill individuals, as a deputy store manager, and in quality control (AI training data projects).

My journey has equipped me with strong communication skills and a deep understanding of human needs, which I apply in my current freelance work. I have transitioned into the tech field, focusing on AI-related projects.
I have completed numerous (micro-)courses in artificial intelligence, which have enhanced my proficiency in this area, but most of all, though, my expertise comes from practical experience and a genuine love for AI and meticulous work.
As a data annotator, I am passionate about contributing to projects that prioritize ethical considerations, language, and require a strong eye for detail. I have a strong focus on language, creative writing, translation & localization, evaluation, diarization, SFT, and RLHF. I shifted my focus to the AI industry about two years ago, mostly on data annotation and creating high-quality training data. I now have a lot of experience with:

 • Evaluation/Rating/Labelling • Data collection • AI safety projects • Translation & localization (GERMAN–ENGLISH / ENGLISH–GERMAN) • Speaker/video diarization • Data annotation in many areas (image, video, audio, text) • Content writing for AI • Prompt–response generation/training • AI voice training and evaluation • Reviewing and editing AI training data • Quality assurance for AI training data • QC for AI training data projects

My Specializations

  • AI
  • Proofreading & Editing
  • Translation
  • Articles & Blog Posts
  • AI Services
  • Virtual Assistant
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