(Senior) Data Scientist - Deep Learning Expert (m/f)

We're looking for a skilled, curious and passionate (Senior) Data Scientist - Deep Learning Expert who wants to make a difference.

Berlin, Germany

Data Science and Analytics

Online since Dec 29, 2017

 We are looking for a (Senior) Data Scientist - Deep Learning Expert (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, in the areas of image clustering, image classification (including multilabel classification and tagging with deep learning), semi-supervised learning with Generative Adversarial Networks (GANs) and more. You will apply these methods to core OLX product platforms deployed in the cloud that are affecting the user experience for millions of visitors per month. You will roll your solutions to production, analyze results offline and online, and measure site impact.


...at OLX Group

OLX is one of the largest e-commerce sites worldwide. OLX is designed to enable people to connect through buying and selling goods and services quickly, easily and for free. We try to create a richer world by bringing people together for win-win exchanges. Sellers win. Buyers win. Communities win. Earth wins. OLX wins. And most of all, you win. 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 richer 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 4000+ committed employees are making a difference from our 25 offices across the globe.


What responsibilities will you get when working with us?

  • Traditionally Classifieds websites allow sellers to describe the objects they are posting with some category specific drop down options and a free text box. To enable a more frictionless posting process and to normalize and compare inventory globally OLX wants to automate as much as possible based on the image alone. Some features we would like to offer:
    • When taking a picture of your used car the app will already predict brand, model, color, etc.
    • The app will generate a meaningful title automatically and predict a reasonable price

Your responsibility will be to lead this project globally from the data science side

  • Develop a global taxonomy of possible products on OLX based on historic images with little metadata and predict new images into this taxonomy with high accuracy
  • Measure the impact of your models on key metrics of the company.
  • Collaborate across the Data Science community and within 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, scipy, etc.
  • You have a strong engineering background working with at least one programming language (Python, Java)
  • Experience with Tensorflow or MXNET for image classification
  • Image clustering (e.g, spectral clustering, affinity propagation, etc)
  • Excellent written and oral communication skills
  • Fluent in English.


Nice to have:

  • Computer vision background and related experience in feature extraction from images  
  • Experience with other 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.