Research Engineer - Search & Personalization (Senior)

Job Category

  • Technology & UX/UI Design


  • Berlin
  • Helsinki


  • Full-Time


  • Zalando SE


Zalando Technology is one of the most collaborative places you can imagine. Partnerships happen with all key engineering and product teams, the Zalando Research unit, and with the international tech community outside of Zalando. We are looking for research engineers to work on a broad set of real-world practical problems of massive scale that will have a direct and significant business impact.

As a Research Engineer, you will focus on developing Zalando’s in-house solutions to provide a personalized and relevant user experience, especially in search and recommendations. You will build microservices providing personalized search results and recommendations for the customer and work on aspects like collaborative filtering, query understanding, intent understanding, and personalized scoring.


  • A degree in computer science, mathematics, statistics or other similar quantitative field (PhD, M.Sc.)
  • At least three years of professional / academic experience programming in Java or Scala, experience with Python a plus
  • You have worked with current big data technology (e.g. Hadoop, Spark) OR experience with information retrieval technology and search solutions like Solr, or Elasticsearch
  • Willingness to work with microservices architecture, distributed systems and RESTful APIs
  • Knowledge of current trends in software design, architecture and web services
  • Demonstrated expertise and desire to work hands-on in analyzing and modeling large data sets
  • Deep skepticism of, plus the ability to identify and debunk buzzword mumbo jumbo, false assumptions and analysis
  • English language fluency

Additional preferred skills

  • Knowledge of near-realtime stream processing and/or message-driven architectures (e.g. Spark Streaming, Storm, Kafka.)
  • Knowledge of applied machine learning / data mining techniques
  • Knowledge of Natural Language Processing (NLP), information retrieval (IR)
  • Experience with building and / or running large-scale applications


  • Research, design and implement algorithms for all aspects of personalization, recommendation, and search
  • Be accountable for all aspects of your work, from research and analysis to testing and deployment
  • Play a critical role in the team as a creative research engineer working at a project level
  • Understand and effectively communicate with internal business customers, partners, and stakeholders at each stage of a project
  • Think abstractly and discover correlations between problems, methodologies, and solutions
  • Implement possible solutions, evaluate outcomes, and update research direction according to business goals and constraints
  • Follow a project through its entire lifetime from problem formulation to solution delivery


Community. Tech culture of trust and empowerment, open source commitment, meetups, game nights, +100 internal technical and fun guilds, tech talks, product demos, Coderdojos, parties and events.

Perks. Competitive salary, 40% Zalando shopping discount, discounts from external partners, public transport discounts, relocation assistance for internationals, free drinks and fruits, hardware of your choice.

Development. Tour of Mastery, extensive onboarding, personal branding support, opportunity to attend and speak at data science conferences and Meetups, and encouragement to publish work.

Work Environment. Self-organized,  autonomous teams and flexible working hours.

Scale. Unparalleled levels of data and opportunities.


Want to join us? Then go ahead and apply!

Please make sure your application documents are written in English. If you have any questions about our recruiting and hiring processes, please contact recruiter, Alicja Notowska.

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