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Every day, tens of millions of people from around the world come to Roblox to play, learn, work, and socialize in immersive digital experiences created by the community. Our vision is to build a platform that enables shared experiences among billions of users. This is what’s known as the metaverse: a persistent space where anyone can do just about anything they can imagine, from anywhere in the world and on any device. Join us and you’ll usher in a new category of human interaction while solving exceptional challenges that you won’t find anywhere else.

Roblox, Senior Search Ranking Engineer, Social Connections, San Mateo, CA

Why Roblox?

Join an amazing team that’s building the future of play. Every month, over 160 million monthly active players come to Roblox to immerse themselves in any game or experience imaginable. Players can create the ultimate theme park, compete as a professional race car driver, star in a fashion show, become a superhero, or simply build a dream home and hang out with friends. Today, more than 30 million user-generated games and experiences have been published on the platform, all created by a talented community of 2 million creators.

As a Senior Search Ranking Engineer, Social Connections, you will help power User and Group Search for our 160M+ monthly users. You will partner with Data Scientists, Product Managers, and Search and ML Engineers to better understand users’ needs and improve their on platform search by employing Search recall and ranking techniques including query rewriting, adding signals to documents, and signal generation/harvesting. We use ElasticSearch as our query node.

You Are:

  • Experienced: You have 3+ years of experience with building search systems and core ranking algorithms at scale and 5+ years of hands on experience developing backend and web services code using Java/C# etc. You own a BS in Computer Science, MS/PhD are a definite plus.
  • Intrepid: Scaling for multiple millions of concurrent users is exciting to you… You know it will take a lot to make it right, but you are impatient to get going...
  • Knowledgeable: You have a deep understanding of all aspects of designing and building highly available microservices. You’re familiar with map-reduce, Spark, Pig, Hive, etc. You have a good understanding and experience for query expansion/rewrite techniques such as synonyms, auto-complete, spell correction, query optimization, query to query similarity.
  • Versatile: You’re a jack of all trades and you have mastered one or more object oriented languages and technologies already; you can easily adapt to any situation when the need arises and come up with the right solution.
  • Creative: You take a creative and strategic approach to solving hard problems and driving new tools/functionality for our developers
  • Team-oriented: You are able to work well as part of a team and know how to collaborate with all participants to develop the best solutions.

You Will:

  • Improve and scale User and Group Search to support Roblox's massive user growth. You will investigate user search queries and behavior, analyze win and loss patterns, explore and create signals for ranking improvement ideas and models.
  • Design and implement search ranking improvement experiments and make necessary system changes to support it. Run monitor and launch search experiments. Always take the long view and constantly iterate to get there.
  • Constantly think about how we can improve our processes and structure to enforce quality while we iterate quickly on feature development.
  • Collaborate with product, data science and design to push the boundary of what is possible.

You’ll Love:

  • Industry-leading compensation package
  • Excellent medical, dental, and vision coverage
  • A rewarding 401k program
  • Flexible vacation policy
  • Roflex - Flexible and supportive work policy
  • Roblox Admin badge for your avatar
  • At Roblox HQ:
    • Free catered lunches
    • Onsite fitness center and fitness program credit
    • Annual CalTrain Go Pass
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