Senior Ad Tech Specialist

Shape the future of advertising & marketing technology with us

Omnicom Media Group is a global leader in media, advertising, and marketing performance.

Our group consists of the labels PHD, OMD, and Hearts & Science (our media agencies), Annalect (our in-house tech hub), TRKKN (Google Marketing Partner), and Flywheel (E-commerce).

Our goal? To make our clients even more successful — by helping them shine where it truly matters. In a world overflowing with ads and information, our clients’ campaigns stand out.

Which brands are we talking about? Think McDonald’s, Renault, Warner Bros., and PepsiCo .

From Instagram to billboards, online and offline — we create work that connects with people. And we do it well enough to win awards: AMMA, SpinAward, Effie, SponsorRing — all proudly displayed in the Omnicom Media Group trophy cabinet.

At Annalect , OmnicomMediaGroup’s data and analytics powerhouse, we develop and deliver Omni – our Open Operating System – and create cutting-edge marketing analytics and technology solutions. Within Annalect, the Enablement team is the driving force behind rolling out, supporting, and customizing Omni, as well as building client-specific data infrastructures and technology stacks.

We’re looking for a Senior AdTech Specialist to join our Enablement team – a dynamic role where strategy meets hands-on expertise.

What you’ll do

As Senior AdTech Specialist , you will:

• Design, implement, and optimize tagging and tracking setups for leading brands.
• Lead complex tag management projects (sGoogle Tag Manager, Tealium, Adobe, CAPI Gateway etc).
• Drive server-side migration projects, helping clients transition from client-side to privacy-friendly, scalable solutions.
• Stay ahead of developments in AdTech, MarTech and cookieless measurement, ensuring our clients remain future-proof.
• Innovate and optimize existing methodologies, solutions, and partnerships, ensuring seamless connectivity between client tech stacks and Omni.
• Act as the go-to expert for clients and internal stakeholders, translating complex technology challenges into actionable solutions.
• Coach talented specialists, elevating their skills in advertising and marketing technology.

What we’re looking for

• 5+ years of experience in AdOps, Tagging, Tracking, or Marketing Technology implementation.
• Deep understanding of tag management systems and advertising platforms (sGTM, Campaign Manager 360, CAPI (Gateway), Meta, TikTok, Pinterest etc.)
• Experience with or strong interest in server-side tagging, data layer design, and cloud integration (GCP/AWS).
• Familiarity with privacy and consent frameworks (GDPR, TCF).
• Analytical mindset with strong attention to detail.
• Excellent communication skills – able to explain technical concepts clearly to non-technical stakeholders.
• Curious, self-driven, and ready to take the next step toward a more advanced, high-impact technical role.
• Experience with data engineering or programming languages such as R or Python is a plus.
• Strong communication and presentation skills in English (Dutch is a plus).

Why join us?

• Be at the forefront of innovative advertising and marketing technology.
• Drive complex, high-impact projects and set new standards for quality and innovation.
• Shape the future of our Enablement team — growing both the business and our people.
• Thrive in a dynamic, international environment with opportunities to learn, lead, and influence industry conversations.
• A competitive salary based on a 37.5-hour work week, excluding 8% holiday allowance.
• A spot in a young, ambitious, and informal team where everyone can be themselves.
• 29 days off per year (27 vacation days + 2 flexible DiversiDays).
• Travel allowance and home-working allowance.
• Well-arranged pension plan.
• Laptop and phone allowance.
• The opportunity to work abroad for up to 6 weeks per year.
• An ergonomic home office setup, including a second monitor.
• A hybrid work model (60% office / 40% remote).
• Access to certifications and courses via OneLearning (Omnicom, LinkedIn & Udemy).
• Informal events and activities, such as the Quarterly Drinks XXL and our legendary Christmas party.
• A large international network of specialist colleagues to collaborate and learn from.

This is your chance to combine strategic leadership with technical excellence and make a real impact on how global brands connect with consumers.

Interested?

Send your CV and motivation letter to Ryan Saheblal from Talent Acquisition at We look forward to receiving your application and hope to welcome you to our team soon.