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Data Scientist(m/w/x)

Berlin
VollzeitVor OrtBerufserfahren
AI/ML
Data Science

Building LLM-as-a-Judge evaluation models for AI product quality in fintech for small businesses. Experience with LLMs/NLP systems and applying data science to real-world products required. Corporate pension with 20% matching, 30-day sabbatical after 3 years.

Anforderungen

  • 3+ years experience applying data science to real-world products (ideally AI systems, customer support, quality measurement, or evaluation frameworks)
  • Solid understanding of machine learning and statistics, including experimentation and metric design
  • Experience with LLMs or NLP systems, and interest in evaluation methods (e.g., rubric-based scoring, prompt-based judges, calibration approaches, or human-in-the-loop evaluation)
  • Strong ability to write clean, reliable code in Python (pandas, numpy, scikit-learn) and strong working knowledge of SQL
  • Experience building or contributing to data workflows and pipelines, and familiarity with taking models into production environments
  • Confidence communicating results and insights to technical and non-technical stakeholders, with focus on practical business impact
  • Proactive mindset, task ownership, and close collaboration with team in fast-paced setting

Aufgaben

  • Build and improve LLM-as-a-Judge evaluation models.
  • Assess AI product quality, safety, and effectiveness.
  • Design and implement automated QA and evaluation pipelines.
  • Monitor and benchmark AI product performance at scale.
  • Contribute to model development from problem framing to monitoring.
  • Own forecasting models.
  • Collaborate with WFM to improve model accuracy.
  • Develop and maintain data pipelines for evaluations and insights.
  • Support creation of qualitative and quantitative observability frameworks.
  • Produce actionable insights to identify improvement opportunities.
  • Communicate recommendations to product and operations stakeholders.
  • Build and iterate on ML models for support efficiency.
  • Collaborate with data and product teams.
  • Deliver measurable improvements to customer support.
  • Learn and share best practices.
  • Contribute to a culture of continuous improvement.

Berufserfahrung

  • 3 Jahre

Ausbildung

  • Bachelor-AbschlussODER
  • Master-Abschluss

Sprachen

  • Englischverhandlungssicher

Tools & Technologien

  • AI systems
  • machine learning
  • statistics
  • LLMs
  • NLP systems
  • Python
  • pandas
  • numpy
  • scikit-learn
  • SQL

Benefits

Lockere Unternehmenskultur

  • Inclusive work environment

Weiterbildungsangebote

  • Annual L&D budget

Betriebliche Altersvorsorge

  • Corporate pension scheme with 20% matching

Workation & Sabbatical

  • 30-day sabbatical after 3 years

Boni & Prämien

  • Referral rewards
Die Originalanzeige dieses Stellenangebotes in der aktuellsten Version findest du hier. Nejo hat diesen Job automatisch von der Website des Unternehmens SumUp erfasst und die Informationen auf Nejo mit Hilfe von KI für dich aufbereitet. Trotz sorgfältiger Analyse können einzelne Informationen unvollständig oder ungenau sein. Bitte prüfe immer alle Angaben in der Originalanzeige! Inhalte und Urheberrechte der Originalanzeige liegen beim ausschreibenden Unternehmen.

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