Tomás Arriaga

I’m a Performance Marketing & Growth Specialist helping businesses scale efficiently through data-driven paid media strategies.

I design and manage high-impact campaigns across Google Ads and Meta, combining advanced tracking, conversion optimisation, and continuous testing to maximise ROI and reduce wasted spend.

My work goes beyond campaign management — I focus on building scalable growth systems, improving attribution, and aligning media strategy with real business outcomes.

I’ve worked with startups, SMEs, and global organisations, managing budgets of €200k+/month and consistently delivering measurable improvements in CPA, conversion rates, and revenue growth.

Performance Marketing Specialist supporting UNICEF’s Individual Giving teams across multiple markets in Europe and Latin America.

I led and supported paid media strategies focused on donor acquisition and monthly pledge growth, working across Google Ads, Meta Ads, and programmatic channels.

My role involved auditing accounts, defining scalable campaign structures, and driving a shift towards conversion-focused strategies, improving both efficiency and volume of donations.

I collaborated with local teams and agencies to implement best practices in tracking, creative testing, and full-funnel optimisation, contributing to significant improvements in CPA and overall fundraising performance.

I also supported market expansion and capability building through training, strategic guidance, and hands-on campaign optimisation.

MediaMath is a global leader in programmatic marketing technology, offering advanced data management, omnichannel DSP capabilities, and AI-driven optimisation across the full media supply chain.

I was part of the Programmatic Strategy & Optimisation team, managing and scaling high-impact campaigns for some of MediaMath’s most strategic clients. My role focused on driving performance through data-led decision-making, advanced optimisation techniques, and continuous testing across channels and formats.

I worked closely with advertisers and internal teams to maximise campaign efficiency, improve targeting strategies, and unlock incremental growth through programmatic buying.

Key responsibilities & impact