Senior Ad Tech Specialist (Temp)

Location: Remote, EU time zones

Team: Product / Development

Contract Type: Contractor

Contract Duration: 6 months, with possibility of extension

English Level: Professional fluency, C1/C2 mandatory

AdTech Experience: Mandatory

Reports to: CTO

IMPORTANT

This is a temporary 6 month contractor position, with the possibility of extension depending on business needs and performance.

Professional English proficiency is mandatory for this role.

Candidates must also have significant previous experience in programmatic AdTech. This is a senior position and is not suitable for candidates looking to transition into AdTech without prior industry experience.

About Refinery89

Refinery89 is a Dutch AdTech company headquartered in Madrid, working with premium publishers around the world to optimize their programmatic advertising performance.

Through advanced technology, data, and hands on technical support, we help publishers increase advertising revenue, improve efficiency, and gain greater transparency across their monetization stack.





Our international team operates at the intersection of technology, digital advertising, data, and publisher operations.

About The Role

We are looking for a Senior Ad Tech Specialist to join our Product and Development environment and take ownership of complex technical investigations across live publisher advertising stacks.

This is a deeply technical role focused on diagnosing issues, reproducing problems, identifying root causes, validating solutions, and translating findings into clear specifications or fixes that our Development team can act on.

You will work directly with live publisher environments, Prebid, Google Ad Manager, Amazon APS, consent frameworks, SSP integrations, browser debugging tools, and the wider programmatic ecosystem.

The objective is simple: when something is not behaving as expected, you should be able to determine what is happening, prove why it is happening, and define

📌 Senior Ad Tech Specialist (Madrid)
🏢 Refinery89
📍 Madrid