Job
- Level
- Senior
- Job Field
- Data
- Employment Type
- Full Time
- Contract Type
- Permanent employment
- Salary
- 60.000 to 82.000€ gross/year
- Location
- Vienna
- Working Model
- Hybrid, Onsite
Job Summary
In this role, you will develop personalization systems and optimize user experiences through advanced data analytics, machine learning, and the implementation of LLM-based applications.
Job Technologies
Your role in the team
- 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.
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Our expectations of you
Qualifications
- A strong foundation in statistics and machine learning.
- You are comfortable across classical machine learning problems such as classification, ranking and scoring, not only recommendations.
- 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.
Experience
- Several years of hands-on data science experience, including at least one recommendation or personalization system you brought to production.
- Practical experience with multi-armed bandit experimentation or reinforcement learning is a big plus.
- Real production experience with LLM-based applications: agentic tools, LLM judges and evaluation harnesses.
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What we offer
- The gross annual salary for this position ranges between €60,000 and €82,000 depending on qualifications and experience.
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Benefits
Food & Drink
Work-Life-Integration
Health, Fitness & Fun
Higher Take-Home Pay
Topics You Will Work On
Job Locations
About Your Employer
kununu GmbH
Wien
kununu is the largest employer ratings platform in Europe, with over 1.5 million ratings of 300,000 companies. Employees, applicants and interns rate companies on kununu in categories such as work conditions, career opportunities and salary.
Description
- Founding Year
- 2007
- Language
- English
- Company Type
- Established Company
- Working Model
- Full Remote, Hybrid, Onsite
- Industry
- Recruitment Agency, Internet, IT, Telecommunication
Employer reviews
by devworkplaces.com
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(1 Review)2.0
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Senior Data Scientist
- Salary
- 60.000 to 82.000€ gross/yearEstimated net salary based on the gross salary in the job ad.41.102 to 52.822 € net/year
- Location
- Vienna
- Working Model
- Hybrid, Onsite
- Diversity
- Open for all genders
- English Only
- English only required
