Hybrid Senior AdTech Engineer – Freelance

Posted 18 hours ago

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About the role

  • Senior AdTech Engineer developing and maintaining adtech integrations for Decentriq's data platform. Starting as soon as possible, with flexible remote work options.

Responsibilities

  • Own Our JavaScript Tags – Develop and maintain Decentriq's client-side tags for our OneID identity system and DMP event capture.
  • Support Publisher Integrations – Work directly with publisher technical teams to integrate our tags and troubleshoot implementation issues.
  • Build Adserver Integrations – Develop key-value lookups and integrations with adservers (GAM, Xandr).
  • Own Server-to-Server Integrations – Design and build low-latency S2S integrations with the adtech ecosystem: adservers, DSPs, and identity providers.
  • Creative Pixel Integrations – Build and maintain pixel integrations for campaign measurement and attribution.

Requirements

  • Bachelor/Master/PhD in Computer Science or a related field and 5+ years of professional experience.
  • Expert-level JavaScript and Python; experience building low-latency, production-grade adtech systems.
  • Have worked at a publisher, DMP, or SSP—you understand the adtech ecosystem from the inside.
  • Hands-on experience with adserver integrations (Google Ad Manager, Xandr).
  • Experience with identity graphs, ID resolution, or cookieless identity solutions (Plus).
  • Familiarity with privacy frameworks (TCF, consent management) (Plus).
  • Rust proficiency (we use it for backend services and compute-heavy client-side modules) (Plus).

Benefits

  • Competitive rates
  • Ownership instead of simply an executor
  • An amazing and fun team that is distributed all over Europe.

Job title

Senior AdTech Engineer – Freelance

Job type

Experience level

Senior

Salary

Not specified

Degree requirement

Bachelor's Degree

Location requirements

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