Group Director, Supply Side Excellence

WPP Media•Toronto, ON

13h•Hybrid

About The Position

The Group Director, Supply Side Excellence will lead the supply-side strategy across programmatic and out-of-home inventory, driving revenue growth, supply path optimization, and commercial performance. This role is highly technical and vendor-facing, with a strong emphasis on DSP/SSP expertise, partnership management, negotiation, and identifying new supply-side revenue opportunities. The ideal candidate will be commercially sharp, technically strong, and experienced in managing supply-side relationships across a complex omnichannel environment.

Requirements

Deep technical knowledge of DSPs and SSPs.
Strong understanding of digital supply, inventory dynamics, and programmatic trading.
Proven experience managing vendor relationships and commercial negotiations.
Experience delivering supply-side revenue growth and efficiency improvements.
Strong understanding of supply path optimization (SPO).
Ability to work across multiple channels in an omnichannel environment.
Commercially minded, proactive, and able to identify value in day-to-day work.
Proven people leadership experience.
Strong stakeholder management and communication skills.

Nice To Haves

Experience working for a DSP, SSP, ad tech platform, or in a supply-side commercial role.
Exposure to platforms such as PubMatic, Index Exchange, Amazon, Yahoo, or The Trade Desk would be highly relevant.
Experience working across programmatic and out-of-home supply.

Responsibilities

Lead the Supply Side Excellence function across programmatic and out-of-home supply.
Manage and develop a team of Directors and Senior Managers, providing leadership and performance direction.
Oversee supply-side partnerships with DSPs, SSPs, and technology vendors.
Identify and unlock supply-side revenue streams and commercial opportunities.
Drive supply path optimization (SPO) initiatives to improve efficiency, margin, and supply quality.
Negotiate with DSPs, SSPs, and other technology partners to secure commercial advantages, incentives, and incremental revenue.
Work closely with the investment team to align supply strategy with vendor deals and commercial opportunities.
Partner with programmatic and out-of-home teams to route inventory and enable best-use supply solutions.
Support internal teams with DSP/SSP training, best-practice guidance, and use-case recommendations.
Monitor supply performance and identify opportunities to scale inventory effectively across channels.
Contribute to a broader omnichannel supply strategy, including CTV, display, and out-of-home.
Maintain a strong focus on revenue targets, efficiency, and margin improvement.