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.

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).

Competitive rates
Ownership instead of simply an executor
An amazing and fun team that is distributed all over Europe.
No need for a formal motivational letter. Just send your CV along with a few bullet points about why you're excited to work with us.

Senior AdTech Engineer – Freelance

Key skills