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Senior Software Engineer - Javascript

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Senior Software Engineer - Javascript in USA

  • Freestar
  • Full time
  • Email
  • Remote

Responsibilities

  • Write and ship production JavaScript and TypeScript code daily while reviewing pull requests and partnering with other engineers.
  • Serve as the subject-matter expert for Prebid.js and Prebid Server, including wrapper configuration, bid adapters, identity, consent, floors, and analytics modules.
  • Monitor Prebid releases, OpenRTB specification changes, and emerging header-bidding standards and translate them into platform recommendations and upgrades.
  • Own the header-bidding wrapper end to end, including architecture, release cycles, feature integration, and design decisions.
  • Work with Google Ad Manager, GPT, and the IMA SDK across line-item architecture, key-value targeting, unified auctions, and unified pricing rules.
  • Maintain high-quality client-side monetization scripts running across thousands of publisher sites.
  • Measure and protect Core Web Vitals, memory usage, script execution time, and network overhead.
  • Own deployed solutions and address critical issues to maintain reliability and performance.

Requirements

  • Deep hands-on expertise with Prebid.js, including wrapper configuration, bid adapters, and identity, consent, floors, and analytics modules.
  • In-depth knowledge of the auction lifecycle and experience with Prebid Server, stored requests, server-side adapter configuration, and server-to-server routing.
  • Strong working knowledge of Google Ad Manager, GPT, line-item architecture, key-value targeting, unified pricing rules, and dynamic allocation.
  • At least 4 years of JavaScript development experience with substantial TypeScript experience.
  • Experience using Google Cloud Platform services such as GKE, Cloud Run, Pub/Sub, and BigQuery to deploy and operate high-throughput services.
  • Broad ad-tech fluency spanning OpenRTB, SSP/DSP integrations, identity solutions and EIDs, TCF/GPP consent frameworks, Amazon TAM/APS, IMA SDK, and VAST.
  • Strong experience with asynchronous programming and client-server architecture.
  • Strong problem-solving, technical documentation, communication, and distributed-team collaboration skills.
  • Contributions to Prebid.js or Prebid Server open-source repositories are preferred.

Benefits

  • Remote position limited to applicants located in the United States.
  • The role is not eligible for visa sponsorship.
  • Freestar is an Equal Opportunity Employer.

Freestar

Freestar engineers cutting-edge monetization solutions for websites and apps. By combining industry-leading technology, data, and massive scale, we enable busy site and app owners to seamlessly maximize revenue while freeing themselves of the hassles of ad operations. Publishers, e-commerce sites...

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