Applied Scientist – Marketing & Personalization (all genders)
You will join the Demand Data & Analytics team at Lounge by Zalando, the scientific brain powering our Marketing Department. By blending statistical rigor with Machine Learning, we determine how we talk to millions of customers every day across all our marketing channels.
We are a collaborative team that believes great science happens when ideas are shared openly, ownership is distributed, and engineers and scientists grow together. You will work alongside other Applied Scientists, Software Engineers, Marketing Managers and Analysts in a full-cycle environment, from discovery to production.
INCLUSIVE BY DESIGN
At Zalando, our vision is to be inclusive by design. And this vision starts with our hiring - we do not discriminate on the basis of gender identity, sexual orientation, personal expression, ethnicity, religious belief, or disability status. You are welcome to leave out your picture, age, or marital status from your application. We only assess candidates on their qualifications and merit.
We want to provide you with a great candidate experience. Feel free to inform us of any accommodations you may need, so we can best support you throughout the hiring process.
do.BETTER - our diversity & inclusion strategy: https://corporate.zalando.com/en/our-impact/dobetter-our-diversity-and-inclusion-strategy
Our employee resource groups: https://corporate.zalando.com/en/our-impact/our-employee-resource-groups
WHAT WE’D LOVE YOU TO DO (AND LOVE DOING)
Build and own personalization systems: develop recommendation models (content-based, collaborative filtering, ranking) that directly shape what customers see in emails and push notifications
Drive predictive modeling; lead CLV prediction, churn and other propensity models that turn complex data into actionable strategies for our Marketing teams
Design rigorous experiments: own A/B tests and incrementality experiments to measure the true causal impact of CRM campaigns and personalization initiatives on revenue and long-term customer value
Integrate science into production: partner with Engineering to bring models into production, defining feature stores, data pipelines and monitoring frameworks
Bridge science and business: translate model results and their limitations into clear, structured insights that influence campaign and personalization roadmaps
Elevate the team: actively participate in code reviews, share ideas in a culture of open collaboration, mentor peers and be mentored in return
WE’D LOVE TO MEET YOU IF
You hold a Master's degree (or equivalent) in a quantitative field such as Statistics, Data Science, Computer Science, Mathematics, Engineering or Economics
You have 3–5 years of industry experience, ideally in e-commerce or digital marketing, building and shipping recommendation systems, segmentation models, propensity or predictive LTV models
You are comfortable with both statistical foundations and ML techniques. Deep learning experience is a genuine plus
You are proficient in Python, SQL and PySpark (Databricks) and hold yourself to high coding standards
You understand experimentation and applied causal inference, with hands-on experience in A/B testing and incrementality testing
You enjoy communicating with non-technical stakeholders by proactively conveying ideas, managing expectations and acting as a bridge between science and business
You thrive in an environment where ideas are challenged respectfully, ownership is real, and the team's success matters as much as your own
OUR OFFER
Zalando provides a range of benefits, here’s an overview of what you can expect. Ask your Talent Acquisition Partner to learn more about what we offer.
Employee shares program
40% off fashion and beauty products sold and shipped by Zalando, 30% off Zalando Lounge, discounts from external partners
2 paid volunteering days a year
Hybrid working model with up to 60% remote per week, actual practice is up to each team to best support their collaboration
Work from abroad for up to 30 working days a year
27 days of vacation a year to start
Relocation assistance available (subject to prior agreement)
Family services, including counseling and support
Health and wellbeing options (including Gympass)
Mental health support and coaching available
Drive your development through our training platform and biannual peer-to-peer review
Learn all about Zalando and our values here: https://jobs.zalando.com/en/?gh_src=22377bdd1us

Welcome to Zalando. Here’s some key info about us:
Our position and vision:
- We’re Europe’s leading online platform for fashion and lifestyle.
- Founded in Berlin in 2008, we bring head-to-toe fashion to more than 50 million active customers in 25 markets; offering clothes, footwear, accessories, and beauty.
- We're building the ecosystem for fashion and lifestyle ecommerce.
Our offering:
- Our assortment of international brands ranges from world-famous names to local labels
- Our platform is a one-stop fashion destination for inspiration, innovation, and interaction
- As Europe’s most fashionable tech company, we work hard to find digital solutions for every aspect of the fashion journey: for our customers, partners, and friends of our brand.
- Our logistics network with 12 centrally located fulfillment centers allows us to efficiently serve our customers throughout Europe, supported by warehouses in Italy, France, Poland, and Sweden with a focus on local customer needs.
Our beliefs:
- Our ambition is to combine our passion for self-expression through fashion with our unwavering commitments to sustainability and D&I
- We promote an inclusive corporate culture that welcomes different perspectives and brings together people from diverse backgrounds. We want to ensure a non-discriminatory and supportive working environment for each of our employees to thrive. It’s a journey that all teams are on together, centered around the values we uphold.
- We believe that our integration of fashion, operations, and online technology gives us the capability to deliver a compelling value proposition to both our customers and fashion brand partners.