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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, review pull requests, and partner with engineers on code quality.
  • Serve as the subject-matter expert for Prebid.js and Prebid Server, including wrapper configuration, bid adapters, identity, consent, floors, and analytics modules.
  • Own the header bidding wrapper architecture and release cycle, evaluate and integrate features, and make key design decisions.
  • Track Prebid releases, OpenRTB changes, and header bidding standards and translate them into platform upgrades.
  • Work with Google Ad Manager, GPT, and the IMA SDK, including line item architecture, key-value targeting, unified auction dynamics, and Unified Pricing Rules.
  • Maintain client-side monetization scripts running across publisher websites at scale.
  • Measure and protect Core Web Vitals, memory usage, script execution time, network overhead, and on-page performance.
  • Own deployed solutions, address critical issues, and help maintain system stability and reliability.

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 ad 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, including GPT, line item architecture, key-value targeting, unified pricing rules, dynamic allocation, and related capabilities.
  • At least 4 years of JavaScript development experience and substantial TypeScript experience.
  • Experience deploying and operating high-throughput services on Google Cloud Platform, including familiarity with GKE, Cloud Run, Pub/Sub, and BigQuery.
  • Broad ad tech fluency covering OpenRTB, SSP/DSP integrations, identity solutions and EIDs, TCF/GPP consent frameworks, Amazon TAM/APS, and video technologies including IMA SDK and VAST.
  • Strong experience with asynchronous programming and client-server architecture.
  • Strong problem-solving, technical documentation, communication, creativity, and distributed-team collaboration skills.
  • Contributions to the Prebid.js or Prebid Server open-source repositories are preferred.
  • Ad tech experience is required; the role is not eligible for visa sponsorship.

Benefits

  • Remote position limited to candidates in the United States.
  • Equal Opportunity Employer.
  • Visa sponsorship is not available.

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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