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Amanda Seillier

@amandaseillier

Partnerships leader at Yahoo building AI, data, and platform deals, including a $4M+ partner portfolio and a new vendor framework.

United States

Message

At Yahoo, I own a $4M+ sales operations vendor budget and manage 20+ AI, data, measurement, and sales-tech partners. I created Yahoo's Ad Tech Vendor Framework and dashboards for tracking partner-influenced revenue and usage, and cut vendor spend 21%.

I structured a graduated revenue share for Firsthand.ai's AI Brand Agent platform and closed data-licensing deals with Equifax (IXI) and Adstra. Earlier, I carried a $30M+ annual revenue target for Xbox Advertising and grew a $500K FDA brief into the $4.5M One Leaves program, which reached 943K+ downloads in nine months.

Experience

Work history, roles, and key accomplishments

Current

Head of Growth

Current

Brainy Fred

Jan 2026 - Present (9 months)

Leads U.S. growth and partnerships for a kids' mobile game, building go-to-market pathways across parent communities, educators, and strategic partners.

Growth Partnerships Go To Market Mobile Gaming

Current

Senior Manager, Operations & Strategy

Current

Yahoo Inc.

Jan 2024 - Present (2 years 9 months)

Owns a $4M+ vendor budget and 20+ AI, data, and sales-tech partners, cutting vendor spend 21% and delivering 5–10% annual efficiencies. Structured a graduated revenue share with Firsthand.ai and closed data-licensing deals with Equifax and Adstra.

AI Data Licensing RevShare MCP Salesforce Tableau Negotiation Business Case Development Partnership Management Vendor Management

Manager, Operations & Strategy

Yahoo Inc.

Jan 2023 - Dec 2024 (1 year 11 months)

Managed operations and strategy for partner management, supporting vendor intake and evaluation processes.

Operations Strategy Partnership Management

Manager, Merchandising Strategy

Yahoo Inc.

Jan 2022 - Dec 2023 (1 year 11 months)

Launched Yahoo's carbon-neutral Green Media PMPs with Scope3 across display and video in 8 markets, generating $100K+ in monthly recurring revenue. Wrote Yahoo's first global programmatic playbook, adopted across a 1,000+ person organization.

Merchandising Programmatic Advertising Green Media PMP Strategy Revenue Generation

Global Senior Advertising Solutions Specialist

Xbox Advertising

Jan 2015 - Dec 2022 (7 years 11 months)

Carried a $30M+ annual revenue target, consistently delivering 100–120% of plan with a ~75% RFP win rate. Negotiated a $12M+ year-long global Activision partnership and led a team of 7 technical account managers.

Advertising Solutions Revenue Targets RFP Negotiation Team Leadership Technical Account Management Partnership Management

Account Executive

HackerAgency

Jan 2014 - Dec 2015 (1 year 11 months)

Managed integrated digital, video, and email campaigns for technology, entertainment, and telecom clients, presenting reporting and optimization recommendations to client leadership.

Account Management Digital Campaigns Video Email Client Reporting Optimization

Media Coordinator

Cesari Direct

Jan 2013 - Dec 2014 (1 year 11 months)

Supported national media planning, buying, and reporting across TV, digital, audio, and out-of-home, including GoPro's first 30-second Super Bowl commercial.

Media Planning Media Buying Reporting TV Digital Audio Out Of Home