Data Scientist (m/f), Berlin

We're looking for a skilled, curious and passionate Data Scientist , Berlin who wants to make a difference.

Berlin, Germany

Data Science and Analytics

Online since May 18, 2017


We are looking for a Data Scientist (CLM team)  (m/f) in our great office in Berlin.


Your opportunity..

The Personalization & Relevance team at OLX is responsible for building algorithmic solutions to facilitate transactions between buyers and sellers. We are developing personalization technologies and optimization strategies that have a direct impact on OLX’s users as well as the company's bottom line. You will be expected to research state-of-the-art machine learning, optimization, natural language processing, text mining, and other techniques, and apply them to OLX marketing and product platforms. You will roll your solutions to production, analyze results offline and online, and measure site impact. OLX Group

OLX Group as the aspiring world leader of C2C trade is amongst the largest user-facing platforms in the world with 300M users monthly. OLX exists to bring together users to sell and buy (used) goods and services quickly and easily. Our mission is to create a better world by bringing people together for win-win exchanges. Sellers win. Buyers win. Communities win. Earth wins. And in the end, OLX wins. You can win, too. Being part of something special. In an open culture that encourages own initiatives, growth and entrepreneurial spirit. Sharing the same values.

At OLX we have a clear ambition - to create a better world. We empower people to make the difference and we’re always looking for great people to help us do just that.


Why OLX?

The OLX Group is a network of leading classifieds platforms in 45 markets, including brands like OLX, Avito, letgo, dubizzle, storia, stradia, among others.

The OLX Group connects local people to buy, sell or exchange used goods and services by making it fast and easy for anyone to post a listing through their mobile phone or on the web. Hundreds of millions of people in local markets around the world generate more than 1.9billion monthly visits, 37 billion monthly page views and 54 million listings every month on the OLX Group's online marketplaces.

Our 3000+ committed employees are making a difference from our 25 offices across the globe.


What responsibilities will you get when working with us?

  • Apply traditional and non-traditional approaches to developing recommender systems, ranging from statistical to machine learning techniques for content based recommenders, contextual based recommenders, user/item based collaborative filtering as well as hybrid recommenders
  • Design and apply data driven and machine learning techniques to retrieve relevant search results and provide optimal ranking.
  • Analyze and mine structured and unstructured data to develop new recall and ranking features and techniques building upon the latest results from the research community.
  • Measure the impact of your machine learning algorithms on key metrics of the company.
  • Collaborate across the Relevance team to find technical solutions to complex design problems.
  • Work in an agile environment to deliver high quality software against aggressive schedules.


What will you need to be successful in this role?

  • You are a highly driven, results-oriented, creative problem solver with a hands on approach to deliver business impact quickly.
  • You are excited by the opportunity to directly impact the daily experience and happiness of millions of people around the world by matching supply and demand.
  • You have a strong understanding of machine learning techniques and have applied them to solve optimization problems using machine learning libraries such as scikit-learn, Mahout, MLlib, etc.
  • You have a strong engineering background working with at least one programming language (Python, Java)
  • You are proficient with data analytics tools (Pandas, R, SQL, etc.)
  • Excellent written and oral communication skills
  • Fluent in English.


Nice to have:

  • Development experience with Search technologies such as Solr, Elasticsearch
  • NLP or Text mining experience
  • Experience with learning to rank algorithms and/or factorization machines
  • Experience with deep learning frameworks such as Caffe, TensorFlow, Torch, Keras, Theano
  • Industry experience productionizing machine learning algorithms at a large scale
  • Experience building large-scale batch and real-time data pipelines with open source data processing frameworks like Scalding, Storm, Spark or the Google Cloud Platform


What can you expect from us and what do we offer?

  • Contributing to the global OLX Group success
  • International career and travel opportunities
  • Work with an international team of talented colleagues learning from one another
  • A budget for conferences and education
  • Competitive salary and great benefits
  • Home Office possibilities
  • Company Mobile phone for business use
  • Any tool you might need MacBook Pro, Notebook, PC
  • Great office location around the corner from Berlin Hauptbahnhof


Inspired and interested in the job? Apply!

It’s great that you want to apply for this role! Thank you for taking the time. Below, you will find our standard application form that we would like you to use. Once you hit the submit button, your application will be stored in our talent database. Once we’ve taken a look, we will get back to you. You can expect our feedback within the next one to two weeks. Sometimes it can take a bit longer but you can be assured that we will get back to you no matter what.

Empower yourself.

Improve the world.

Join OLX.