[Hiring] Senior AdTech Solutions Engineer @Refinery89

Role Description

We are looking for a Senior AdTech Solutions Engineer 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
• Translating findings into clear specifications or fixes for the Development team

You will work directly with:

• Live publisher environments
• Prebid
• Google Ad Manager
• Amazon APS
• Consent frameworks
• SSP integrations
• Browser debugging tools
• 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 what needs to happen next.

The role also supports Product decisions, roadmap prioritization, and technical go or no go decisions with evidence from real publisher environments.

Qualifications

• At least 5 years of experience in programmatic advertising technology, preferably within publisher monetization or the supply side.
• Significant hands-on experience diagnosing and debugging live advertising environments.
• Deep working knowledge of Prebid.js, including configuration, adapters, modules, identity solutions, floors, and debugging.
• Strong technical knowledge of Google Ad Manager, including line items, pricing rules, AdX, dynamic allocation, GPT implementations, and MCM models.
• Strong understanding of IAB TCF 2.x and GDPR consent mechanics.
• Understanding of OpenRTB and supply chain transparency standards.
• Strong JavaScript knowledge, with the ability to read, modify, and validate production advertising tags.
• Advanced browser developer tools skills.
• Ability to write structured technical documentation.
• Professional English proficiency at C1/C2 level.
• Previous professional experience in AdTech is mandatory.

Requirements

• Own complex technical issues that Operations or Development teams have been unable to resolve.
• Investigate tag defects, rendering failures, consent issues, bid path problems, and unexpected revenue behavior.
• Reproduce issues using live publisher inventory and controlled staging environments.
• Identify root causes and distinguish structural limitations from configuration problems.
• Produce clear technical specifications or patched tag implementations.
• Investigate publisher implementations directly at browser level.
• Use Prebid debugging, network requests, browser consoles, HAR files, and consent string inspection.
• Validate request ordering, consent propagation, and bidding behavior.
• Confirm fixes in live environments.
• Perform structured audits across publisher monetization stacks.
• Review areas including Prebid configuration, Google Ad Manager, Amazon APS, CMP and TCF implementation, floor models, ad units, identity solutions, video, SSP health, and bidder performance.
• Track technical changes across Google, Amazon APS, Prebid.js, SSP partners, and the IAB Tech Lab.
• Support phased technical rollouts using clearly defined success metrics.
• Establish validation criteria and rollback conditions.
• Monitor performance following deployment and validate results against agreed thresholds.

Benefits

• Remote working within compatible EU time zones.
• A temporary 6 month contractor agreement with the possibility of extension.
• 50% coverage of the standard Sanitas private health insurance plan.
• The opportunity to work directly on complex publisher monetization environments and real world programmatic infrastructure.
• An international team working across AdTech, technology, data, and publisher operations.

Interview Process

• Initial Screening: A short introductory conversation with our recruitment team.
• Technical Conversation: A live technical discussion based around a real Prebid or Google Ad Manager configuration.
• Written Technical Exercise: A practical exercise designed to assess how you investigate, document, and solve complex AdTech problems.
• Final Conversation: A final conversation with the CTO and relevant team members.

What This Role Is Not

• This is not a commercial partnerships or sales position.
• You will not be responsible for commercial negotiations, SSP relationship ownership, or partner outreach.
• This is also not a traditional campaign management or trafficking position.

Who This Role Is For

• You enjoy opening developer tools and understanding exactly what is happening behind an advertising implementation.
• You are comfortable working across JavaScript, browser behavior, programmatic infrastructure, and publisher configurations.
• You can clearly communicate complex findings to both technical and non-technical colleagues.
• You are comfortable taking ownership of difficult problems that do not have an obvious answer.