Data Scientist (all genders)

Anstellungsdetails

Permanent contract, Full or Part-Time, Remote or Cologne / Darmstadt / Düsseldorf / Berlin Info

Who we are

We are the tech powerhouse behind Kaufland’s international online marketplaces and a company within the Schwarz Group. Driven by a start-up mentality and working on an equal footing within flat hierarchies, we develop the best marketplace solutions for our customers, sellers and partners. #FromEuropeForEurope

Day by day, our Tech & Product Team of about 400 experts pursues the goal of creating the best possible customer shopping experience for our online marketplace. Through innovative technical developments, they not only create an outstanding shopping experience but also lay the foundation for an optimal selling experience for our sellers. Learn more about our division, areas, and cross-functional teams here! Aufgaben

Your tasks – this is what awaits you in detail

• You take full responsibility for the end-to-end lifecycle of data science services, from initial conceptualization and prototyping to full-scale production

• You immerse yourself in your business domain to become an expert in value creation via the data science toolbox

• You maintain a strong sense of ownership, you ensure the reliability and high performance of your deployed services

• You actively share your expertise to raise the bar for engineering excellence within our data community

• We’re looking for several roles with different focus topics. You will either..

• … build data science services that power our entire shop and are crucial for our business success within the Product Data domain. This will include large scale services that utilize classic ML approaches like classification, NLP but also multimodal GenAI models

• …join the core team behind our in-house ads platform. We run our own ad service which is rare in e-commerce. Your work drives significant additional revenue and shapes how sellers and shoppers experience our platform

• … work on innovative and novel GenAI products where you are the expert and owner of the eval platform, working together with product management to constantly push our products forward

• You work with a team of highly skilled and very passionate data scientists and ML-engineers who actively support each other and share their knowledge

Profil

Your profile – this is what we expect from you

• You have extensive knowledge of the data science toolbox which includes picking the right methodology for the appropriate problem 

• Excellent Python and SQL skills are the foundation of your technical craft; you also have experience integrating agentic coding workflows (e.g., Claude Code) into daily development, testing, and refactoring routines

• A proactive mindset and the ability to translate complex business problems into high-impact technical solutions define your working style

• You are familiar with modern infrastructure tools like Kafka, Kubernetes, or Datadog and have production experience in a cloud environment (ideally GCP)

• For our product data position, we specifically look for:

• Experience shipping complex ML classifiers and NLP services

• Experience shipping large scale GenAI applications

• For our AdTech position, we specifically look for:

• Experience with ranking, relevance, and/or bidding and pricing (cost-per-click) prediction models

• Experience measuring business impact with A/B tests

• For our GenAI Evals focussed position, we specifically look for:

• Experience with customer facing GenAI applications evals platform

• Deep expertise in evaluation and metric design to measure novel products

• Bonus points if you’re familiar with concepts such as architecture as code, complex deployment pipelines and have experience translating cutting edge research into data science products

• You are fluent in English (C1) and enjoy working in a dynamic, international environment

Benefits

What we offer

• Create your own work-life balance: You have the flexibility to choose between working remotely (within Germany) or from one of our locations in Cologne, Darmstadt, Düsseldorf, or in Berlin!
• Do you want to move to Germany? No problem – we offer you an attractive relocation package to give you a smooth start. 
• Urban Sports Club and RSG Group Fitness Studios: Get top deals for fitness, swimming, yoga and more
• Mental Well-Being: We support you on your well-being journey with special offerings such as Instahelp, the digital platform for online psychological counseling
• Vacation & Sabbatical: Enjoy 30 days of vacation per year and the opportunity to take a sabbatical once you have been part of the team for a certain period!
• Option for Pluxee restaurant vouchers: Buy Pluxee vouchers through us and benefit from tax-advantaged meal allowances!
• ‘Deutschlandticket’: We subsidise your train season ticket for more mobility
• Employee Discount: You will receive a monthly coupon for Kaufland.de
• Free choice of hardware: Mac or Lenovo, it’s up to you
• Boost your growth: Benefit from our online language learning programs, diverse in-house training, and our automated 360-degree feedback. We cover the costs for relevant conferences, training opportunities, and approved team workshops to strengthen personal interactions
• This is who we are: Our dynamic culture combines flat hierarchies, a start-up mentality, an international team of over 65 nationalities, and the strength of the Schwarz Group to provide you an agile and secure working environment.
• We are team players: From day one, you will connect not only with your team but also with others through our digital onboarding journey, the buddy program, and regular team and company events, all-hands meetings, powerful mornings, and much more!

Check out our Principles & our blog for even more insights into our company culture! Bewerben

Diversity at Kaufland e-commerce

We welcome applications from everyone, regardless of skin colour, sexual orientation, gender identity, age, disability, ethnic origin, religion and ideology. We are signatories to the Charta der Vielfalt (German Diversity Charter) – because we know that extraordinary things can only be achieved with diversity. Read more here! When applying, you can optionally include your pronouns in your resume.

Why are you the perfect fit for this position? Don't bother with cover letters - we're interested in facts and figures! Feel free to share your Github profile with us in your application.

As we have very international teams, we would highly appreciate it to receive your CV or profile link in English.

We are looking forward to your application! Kaufland e-commerce Services GmbH & Co. KG Postal address: Habsburgerring 2 50674 Köln Ansprechpartner

Your contact person: Kristina Heymann