Senior Software Engineer, Javascript – Ad Tech Experience Required

Freestar

. Serve as a senior hands-on developer, writing and shipping production code daily, reviewing peers' pull requests, and partnering with engineers to ensure codebase quality .

Posted 10/27/2026full-timeRemote • United StatesSeniorWebsite

Core Competencies

Role fit

Core Competencies

Use this summary to align your resume positioning with the role.

Demonstrates deep expertise in Prebid.js and Prebid Server, with a strong focus on header bidding architecture and Google Ad Manager integration. Proficient in JavaScript and TypeScript development, ensuring high-quality code and system performance.

Highest-signal resume keywords

Prebid.js ExpertiseGoogle Ad Manager KnowledgeJavaScript DevelopmentTypeScript ExperienceGoogle Cloud Platform Proficiency

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Prebid.jsPrebid ServerJavaScriptTypeScriptAsynchronous ProgrammingClient-Server ArchitectureOpenRTBSSP/DSP IntegrationsTechnical DocumentationProblem-Solving

Soft Skills

Communication SkillsCreativityTeam Collaboration

Tools & Technologies

Google Cloud PlatformGKECloud RunPub/SubBigQueryIMA SDK

Industry Keywords

Header BiddingAuction LifecycleIdentity SolutionsConsent FrameworksDynamic Allocation

Tech Stack

Tools & technologies

BigQueryCloudGoogle Cloud PlatformJavaScriptTypeScript

About the role

Key responsibilities & impact

Serve as a senior hands-on developer, writing and shipping production code daily, reviewing peers' pull requests, and partnering with engineers to ensure codebase quality
Serve as a subject matter expert for Prebid.js and Prebid Server, including wrapper architecture, bid adapters, identity, consent, floors, and analytics modules
Track Prebid.js and Prebid Server releases, OpenRTB specification changes, and emerging header bidding standards, translating them into platform recommendations and upgrades
Own the header bidding wrapper end to end, including architecture, release cycle, feature integration, and design decisions
Work daily with Google Ad Manager, GPT, and the IMA SDK, including line item architecture, key-value targeting, unified auction dynamics, and Unified Pricing Rules
Maintain high-quality JavaScript and TypeScript client-side scripts monetizing publisher sites at scale
Measure and protect Core Web Vitals, including INP, LCP, and CLS, as well as memory usage, execution time, and network overhead
Own deployed solutions, ensuring reliability and addressing critical issues to maintain system stability and performance

Requirements

What you’ll need

Deep, hands-on expertise with Prebid.js — wrapper configuration, bid adapters, modules (identity, consent, floors, analytics)
In depth knowledge of the auction lifecycle
Experience with Prebid Server — stored requests, server-side adapter configuration, s2s routing, and more
Strong working knowledge of Google Ad Manager, including GPT, line item architecture, key-value targeting, unified pricing rules, dynamic allocation, and more
4+ years of experience in JavaScript development, with substantial TypeScript experience
Experience with Google Cloud Platform (e.g., GKE, Cloud Run, Pub/Sub, BigQuery) for deploying and operating high-throughput services
Broad ad tech fluency: OpenRTB, SSP/DSP integrations, identity solutions and EIDs, consent frameworks (TCF/GPP), Amazon TAM/APS, video (IMA SDK/VAST)
Strong experience with asynchronous programming and understanding of client-server architecture
Strong problem-solving skills and ability to work in a distributed team environment
Excellent technical documentation and communication skills
Ability to be creative and contribute based on your merit
This role is not eligible for visa sponsorship