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Sandra Österberg

Sandra Österberg

CTV Monetisation & Publisher Development

€800/day
Berlin, DE
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Sandra

I help AdTech platforms grow their publisher business in DACH and the Nordics — and CTV publishers maximize revenue from their ad inventory.

My unique selling proposition: I know the publisher relationship from two perspectives — from the SSP side (FreeWheel) and from the ad server side (Publica). In addition, I have an established network and in-depth market knowledge in DACH and the Nordics, which cannot be built up in the short term.

For AdTech platforms, I handle:

Onboarding new publishers
Ongoing customer support and account reviews upon request
Identification of growth potential in existing accounts
Development of early partnerships into long-term, high-revenue client relationships

For CTV publishers, I handle:

Increasing demand through new SSP and reseller integrations (VAST, OpenRTB, Prebid)
Development of floor pricing strategies
Account optimizations and metadata audits
Technical troubleshooting along the entire ad stack

I work fractionally and project-based — senior know-how for teams that need it, without the cost of permanent employment.

Currently open to new part-time and project-based engagements.
  • Finnish

    Native or bilingual

  • Swedish

    Native or bilingual

  • English

    Fluent

  • German

    Fluent

Can work on-site
Berlin (up to 50km)

Experience

  • Selbstständig
    Freelance & Fractional AdTech Account Manager
    DIGITAL AND IT
    January 2026 - Today (7 months)
    ■ Account Management & Client Retention
    ■ Customer Success & Onboarding
    ■ Revenue Management & Monetization
    ■ Publisher & Advertiser Relationships
    ■ Programmatic Advertising
    ■ Multiple Media Formats
    (CTV, Video, DOOH, Audio, Retail Media, and Display)

    Available for freelance, contract, fractional, or (interim) remote full-time roles in AdTech and digital advertising.
    Programmatic Advertising Customer Success Management Customer Support Account Management
  • AdVistaTV
    COO
    September 2025 - Today (11 months)
    ■ Took responsibility for Ad Operations and Marketing at the AdTech startup AdVistaTV in daily business operations.
    Ad Operations Programmatic Advertising AdTech
  • Freewheel/Comcast
    Senior Publisher Account Manager
    SOFTWARE PUBLISHING
    September 2021 - July 2024 (2 years and 10 months)
    Berlin, Germany
    ■ Developed business for broadcasters and digital publishers in the DACH and Nordics region on Freewheel's SSPs and implemented best practices across publisher portfolios.
    ■ Supported clients' ad operations teams in managing and optimizing their inventory.
    ■ Managed publisher inquiries and provided daily support for publisher accounts.
    ■ Presented new product features to clients and participated in strategic account reviews.
    ■ Monitored and analyzed key metrics across publisher websites and apps to derive overarching trends and strategies.
    ■ Facilitated access to publisher inventory and actively promoted offerings to the Demand Sales team (AudienceXpress).
    ■ Represented Freewheel in the IAB Finland Video Taskforce and at industry events.
    Account Management AdTech Customer Success Management SSP CTV

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Education

  • Bachelor and Master's degree in Business Administration (BWL)
    Hanken School of Economics
    2014
    Marketing & Finanzen
  • Erasmus exchange program
    University of Mannheim
    2012

Skill set

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