Romain Dubois

Fifty-Five is a leading Google Premium Partner specializing in digital transformation and data-driven advertising. As a senior programmatic expert, I managed a portfolio of agencies and advertisers (budgets ranging from €500K to €2M) across the full Google Marketing Platform suite.

Built and developed long-term partnerships with 15+ media agencies and direct advertisers on DV360, CM360, SA360, and GA4 solutions. Conducted regular business reviews (QBR / MBR): performance analysis, product roadmap alignment, new activation opportunities. Delivered +100% growth in managed DV360 budgets (from €1M to €2M between H1 2024 and H1 2025) through proactive strategic advisory and product roadmap alignment. Consistently identified upsell and cross-sell opportunities across new ad formats, measurement solutions, and brand safety tools.

Go-to expert on brand safety, viewability, and attention: IAS. Delivered training and certification workshops for 100+ professionals (media buyers, traders, account managers) on DSP platforms (DV360, Amazon DSP) and ad serving tools (CM360). Advised clients on tracking, measurement, and attribution implementation (MMPs: Appsflyer, Adjust) within their digital strategies. Led webinars, enablement sessions, and hands-on workshops for agency teams across France.

Contributed to RFP responses and pre-sales engagements, covering technical solutioning and product positioning. Partnered with sales teams to qualify client needs and recommend the most relevant ad solutions. Maintained proactive knowledge of product updates (cookieless, privacy-first, CTV) to anticipate client needs and inform partner conversations.

9 years providing strategic and operational AdTech advisory to agencies and advertisers within the Publicis Group network (Starcom, Performics, Zenith, Blue449).

Recommended and deployed ad serving, measurement, and analytics solutions for major agency clients. Supported trading teams on programmatic buying strategies and DSP platform adoption. Led AdTech stack architecture and tool selection for strategic clients. Delivered internal training and best practice sharing on tracking, brand safety, and attribution. Collaborated cross-functionally with data, tech, and media teams on large-scale projects.

Set up and optimized digital campaigns in ad serving platforms (DoubleClick / Weborama). First exposure to the AdTech ecosystem and campaign performance measurement.