Senior Backend Engineer

Published date Posted on Indeed on Nov 13, 2021 (19 d ago)

About Us

Radar is connecting digital experiences to the physical world with a location platform for every app, every device, and every developer. We help enterprises like T-Mobile, American Eagle Outfitters, and Zappos increase engagement and improve operations, powering impactful location-based experiences for over 100 million end-users.

Our team has backgrounds at companies like Google Maps, Foursquare, and Facebook. We are backed by top investors including Accel and Two Sigma Ventures.

We are remote-friendly and currently have 40 employees with headquarters in Brooklyn, NY.

About the role

We're looking for a Senior Backend Engineer to help us improve our backend infrastructure by working on things like simplifying how we serve our hot path, building internal tooling around our Point-of-Interest Places database, and creating a unified customer-facing analytics stack.

With over 100 million installations over the past 12 months, the Radar mobile SDK generates 100's of millions of api calls per day. At its core, Radar is a data-intensive, high-throughput application, so reliable and global infrastructure is critical.

You will report to our CTO.

What you’ll do:

  • Help scale our api’s beyond 10,000 qps and our Data Lake beyond 100PB
  • Work on the Radar api layer in Typescript and Docker
  • Work on the Radar offline pipeline layer in python airflow
  • Work on our Data layer in MongoDB, Redis, and Athena
  • Build internal tools, including simple web interfaces
  • Work across many AWS services
  • Improve our Point-of-Interest places database using Scala spark
  • Improve our PlaceRank algorithm

You have:

  • Experience with AWS, Terraform, and Docker
  • Experience working on a large scale production data-intensive application in AWS
  • Experience with indexing, sharding, caching and materialized views for high-throughput data-intensive applications
  • Experience improving precision and accuracy of ranking oriented api’s
  • Experience implementing solutions that are 20% of the effort but 80% of the benefit

You’ll be working with:

  • Tim Julien, CTO
  • Jeff Kao, Senior Staff Engineer
  • Craig Kochis, Engineering Manager


  • Remote-friendly
  • Competitive compensation package and equity plan
  • Medical, dental, and vision plans with 100% premiums covered for you
  • 401(k) plan with employer match
  • Flexible work hours and vacation policy
  • Free CitiBike membership
  • Monthly fitness reimbursement

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