Senior Ad Tech Specialist

A Global Powerhouse 

Omnicom Media is the world’s largest and most connected media and advertising organization. Bringing together leading agencies such as OMD, UM, PHD, Initiative, Kinesso, Flywheel, Annalect, TRKKN, Hearts and Sciences and YUNE, we combine media, data, technology, creativity and strategy in one integrated organization, helping brands grow in a rapidly changing media landscape. We’re proud to work with iconic brands like Nike, L’Oréal and McDonald’s as well as leading local and regional brands.

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.

Annalect is OmnicomMediaGroup’s data and analytics powerhouse. We create cutting-edge marketing analytics and technology solutions. At the Enablement team, we build client-specific data infrastructures and technology stacks for our clients. We also roll out, support and customise Omni – our Open Operating System that allows our colleagues at the media agencies to deliver the best media strategies and activations.

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:

• 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.


• Act as the go-to expert for clients and internal stakeholders, translating complex technology challenges into actionable solutions.


• Innovate and optimize existing methodologies, solutions, and partnerships, ensuring seamless connectivity between client tech stacks and Omni.


• Design, implement, and optimize tagging and tracking setups for leading brands.


• Stay ahead of developments in AdTech, MarTech and cookieless measurement, ensuring our clients remain future-proof.


• 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 [email protected]. We look forward to receiving your application and hope to welcome you to our team soon.