Senior Data Scientist (m/f/d)

kununu Austria GmbH; Wien; Hybrid; EUR 60.000 - 82.000; Vollzeit

Benefits dieser Stelle

Bring your dog to the office

6 week vacation

Mobile devices also for private use

Restaurant vouchers and employee discu

Up to 12 weeks Workation

Trust-based working hours

Communication on equal terms

Zusammenfassung

kununu Austria GmbH is seeking a Senior Data Scientist to reimagine our recommendation landscape across a high-traffic platform. You will own the data science lifecycle from framing problems to production rollout and will build agentic, LLM-driven applications on a massive collection of workplace insights.

You will test hypotheses quickly and measure model performance under real product constraints. The role emphasizes production-ready ML, bandit/RL experimentation, and collaboration with

Qualifikationen

• Hands-on data science experience including a production-ready recommendation/personalization system.
• Strong foundation in statistics and ML; experience with multi-armed bandit experiments or RL is a plus.
• Proficiency in Python and SQL; comfortable with modern data warehouses and transformation tools like dbt.
• Ability to write clean, tested, reusable code and participate in code reviews.
• Ability to explain complex results simply and mentor others.

Aufgaben

• Drive evolution of the recommendation landscape and shape discovery of employers, jobs, and content on kununu.
• Own the full data science lifecycle from framing problems to production rollout.
• Apply bandits and RL to personalize content in a high-traffic environment.
• Design and build LLM-driven, agentic applications on large unstructured data sets with robust evaluation.
• Collaborate with product and engineering to translate business questions into data science problems.
• Define success with product; select metrics, run experiments, and convert hypotheses into results quickly.
• ML lifecycle: build reproducible data foundations, monitor quality and cost, and improve models over time.
• Mentor junior team members and review their work; act as sparring partner for the team lead on ML concepts.

Kenntnisse

Recommendation system

Statistics

ML & RL

LLM-based apps

Python

SQL

Data warehouse

Code reviews

Mentoring

Tools

dbt

Jobbeschreibung

We're looking for an experienced Senior Data Scientist to join our Data Science team. You'll drive the re-imagining of our recommendation landscape: a project that will change how millions of people experience kununu. You'll work on a platform with a lot of traffic, so you can go from an idea to real results within weeks. On top of that you'll build agentic, LLM-driven applications on one of the largest collections of workplace insights in the German-speaking world, with a fast-growing stream of fresh feedback data. If you like to test hypotheses quickly and see how your models perform under real product constraints, this is the place for you.

The gross annual salary for this position ranges between €60,000 and €82,000 depending on qualifications and experience.

Your Tasks

• Drive the evolution of our recommendation landscape and shape how people discover employers, jobs and content on kununu.
• Own the full data science process: from framing the problem and exploring the data to modelling, evaluation and production rollout.
• Apply methods such as bandits and reinforcement learning to personalize content in a live, high-traffic environment.
• Design and build LLM-driven, agentic applications on top of a large body of unstructured data, and set up solid evaluation for them, including LLM-as-a-judge approaches.
• Work closely with product and engineering to turn business questions into data science problems and bring your models into the product.
• Define with product what success looks like: choose the right metrics and evaluation strategy, run experiments, and turn hypotheses into empirical results within weeks.
• ML-Lifecycle: Work with transformation tooling to build reproducible data foundations for your models, monitor quality and cost, and improve them over time.
• Mentor more junior colleagues in the team: review their work, share your knowledge and help them grow.
• Act as a sparring partner for the team lead on statistical methods, machine learning concepts and solution design.

Your Skills

• Several years of hands-on data science experience, including at least one recommendation or personalization system you brought to production.
• A strong foundation in statistics and machine learning. Practical experience with multi-armed bandit experimentation or reinforcement learning is a big plus.
• You are comfortable across classical machine learning problems such as classification, ranking and scoring, not only recommendations.
• Real production experience with LLM-based applications: agentic tools, LLM judges and evaluation harnesses.
• Solid Python and SQL skills. You are comfortable in a modern data warehouse and with transformation tools such as dbt.
• You write clean, tested and reusable code, and you see version control and code reviews as a normal part of your work.
• You explain complex results in simple terms to people outside data science, and you enjoy mentoring and giving constructive feedback.
• Bring your dog to the office
• 6 week vacation
• Mobile devices also for private use
• Restaurant vouchers and employee discount
• Up to 12 weeks Workation
• Trust-based working hours
• Communication on equal terms

Your Contact

You still have questions?
Feel free to get in touch with me.

We're looking for an experienced Senior Data Scientist to join our Data Science team. You'll drive the re-imagining of our recommendation landscape: a project that will change how millions of people experience kununu. You'll work on a platform with a lot of traffic, so you can go from an idea to real results within weeks. On top of that you'll build agentic, LLM-driven applications on one of the largest collections of workplace insights in the German-speaking world, with a fast-growing stream of fresh feedback data. If you like to test hypotheses quickly and see how your models perform under real product constraints, this is the place for you.

The gross annual salary for this position ranges between €60,000 and €82,000 depending on qualifications and experience.

Your Tasks

• Drive the evolution of our recommendation landscape and shape how people discover employers, jobs and content on kununu.
• Own the full data science process: from framing the problem and exploring the data to modelling, evaluation and production rollout.
• Apply methods such as bandits and reinforcement learning to personalize content in a live, high-traffic environment.
• Design and build LLM-driven, agentic applications on top of a large body of unstructured data, and set up solid evaluation for them, including LLM-as-a-judge approaches.
• Work closely with product and engineering to turn business questions into data science problems and bring your models into the product.
• Define with product what success looks like: choose the right metrics and evaluation strategy, run experiments, and turn hypotheses into empirical results within weeks.
• ML-Lifecycle: Work with transformation tooling to build reproducible data foundations for your models, monitor quality and cost, and improve them over time.
• Mentor more junior colleagues in the team: review their work, share your knowledge and help them grow.
• Act as a sparring partner for the team lead on statistical methods, machine learning concepts and solution design.

Your profile

Your Skills

• Several years of hands-on data science experience, including at least one recommendation or personalization system you brought to production.
• A strong foundation in statistics and machine learning. Practical experience with multi-armed bandit experimentation or reinforcement learning is a big plus.
• You are comfortable across classical machine learning problems such as classification, ranking and scoring, not only recommendations.
• Real production experience with LLM-based applications: agentic tools, LLM judges and evaluation harnesses.
• Solid Python and SQL skills. You are comfortable in a modern data warehouse and with transformation tools such as dbt.
• You write clean, tested and reusable code, and you see version control and code reviews as a normal part of your work.
• You explain complex results in simple terms to people outside data science, and you enjoy mentoring and giving constructive feedback.

What we offer

• Bring your dog to the office
• 6 week vacation
• Mobile devices also for private use
• Restaurant vouchers and employee discount
• Up to 12 weeks Workation
• Trust-based working hours
• Communication on equal terms

Contact

Your Contact

You still have questions?
Feel free to get in touch with me.