Customer Success Manager / Sales (Programmatic & AdTech) Lisboa

Customer Success Manager / Sales (Programmatic & Ad
Tech)

Be among the first 25 applicants. Direct message the job poster from Digiseg.

Our mission is to help advertisers unlock the power of tracking‑free data and reach the future of marketing, faster.

Founded in Copenhagen, Digiseg is one of the largest independent data providers in the global programmatic ecosystem. We operate in 50+ markets, work with all major agency groups, and have powered over 100, 000 campaigns for 5, 000+ advertisers.

We’re a small, international team based in Copenhagen, Warsaw, and Lisbon - where our Customer Success Hub is located. Scandinavian by heart, we value flexibility, autonomy, and a proactive, can‑do attitude.

We’re looking for a Customer Success Manager (with a sales focus) to help us grow and support our global client base.

In this hybrid role, you’ll manage existing clients, identify new ones, educate them about Digiseg’s unique approach, and help them get the most out of our data products.

• Build and grow relationships with clients worldwide.
• Present Digiseg’s solutions and identify strategic growth opportunities.
• Support clients throughout the sales funnel, including reports, deal IDs, and audience requests.
• Track and manage client relationships and projects with persistence and organization.
• Educate on best practices for targeting and measurement.
• Lead client presentations and meetings.
• Troubleshoot client issues and coordinate resolutions.
• Represent Digiseg at industry events or webinars.
• Advocate for clients internally and contribute to process improvements.

• 3+ years in sales, account management, or customer success in advertising, marketing, or media.
• Proven track record of building and growing customer relationships.
• Strong presentation, negotiation, and communication skills.
• Excellent written and spoken English (other languages like German or Turkish are a plus).
• Hands‑on programmatic experience with DV360, The Trade Desk, Adform, SSPs, etc.
• Analytical mindset and confidence using data to tell stories and drive decisions.
• Organized, proactive, and results‑driven.

• 5 weeks of paid vacation and a 37. 5‑hour workweek.
• Hybrid work model – minimum 3 days in our Lisbon office.
• A flat, flexible culture where your ideas matter.
• Be part of a company redefining how digital advertising respects privacy.

Apply via Linked
In or send your CV directly.

Digiseg Vision and Mission - for ethical audience data

We envision a world where ad tech serves humankind and works in the service of truth.

Digital tracking, echo chambers, fake news, and walled gardens that traffic human decisioning‑power must end. Ultimately, press‑accredited media, investigative journalism, democracy, and free will are at stake.

Our team’s goal is to enable advertisers to target consumers in a tracking‑free manner while achieving similar, or better returns on advertising spend as the walled gardens’ highly invasive approaches. We will know we’ve reached our goal when the majority of digital campaigns are neither measured nor targeted using personal data and tracking.

Seniority level

• Mid‑Senior level

Employment type

• Full‑time

Industries

• Software Development

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