Software Engineer, Search & Personalization

Website DoorDash

At DoorDash, our search / personalization engineers focus on developing intelligent features and algorithms for showing relevant results to users. The features and algorithms you develop will power the search, autocomplete and browse results on the DoorDash website, mobile site and mobile apps. We’re looking to hire talented, self-motivated search engineers for our core relevance ranking team.

What You’ll Achieve

  • Iterate and improve our recommendation, personalization, query understanding and ranking algorithms which have applications in several product areas like search, autocomplete and email/push communications
  • Implement and deploy machine learning models to production systems
  • Develop technologies to solve complex data problems, such as web and mobile scale data integration and data generation pipelines to collect, clean and aggregate data to address complex data problems and integrate them with production systems
  • Improve search relevance using text matching algorithms and NLP techniques
  • Work collaboratively in a fast-paced startup environment
    Build highly performant APIs that are horizontally scalable
  • Collaborate with other engineers, data scientists, and teammates across the product and business organizations
  • Design and deploy high-performance RESTful web services

About You

  • High-energy and confident – you’ll do whatever it takes to win
  • You’re an owner – driven, focused, and quick to take ownership of your work
  • Humble – you’re willing to get into the details and you’re open to feedback
  • Adaptable, resilient, and able to thrive in ambiguity – things change quickly in our fast-paced startup and you’ll need to be able to keep up!
  • Growth-minded – you’re eager to expand your skill set and excited to carve out your career path in a hyper-growth setting
  • Desire for impact – ready to take on a lot of responsibility and work collaboratively with your team


  • B.S., M.S., or PhD. in Computer Science or equivalent
  • Strong knowledge of CS fundamental concepts and OOP languages
  • 2+ years of experience working on search/ranking/relevance problems
  • Familiarity with information Retrieval/NLP/Data Mining/Machine Learning

Nice To Haves

  • Contributor to open source projects
  • Experience with real-time technology problems
  • Familiar with Pandas / Python machine learning libraries
  • Experience with deep learning
  • Lucene (SOLR/Elasticsearch)
  • Big Data technology: Hadoop, Hive, Spark
  • Service Oriented Architecture and RESTful APIs

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