Jason Kwao

Jason Kwao is an Amazon growth strategist and entrepreneur with years of hands-on experience helping brands scale on the Amazon marketplace.

After leaving university, Jason began building businesses through persistence, experimentation, and a deep curiosity about how online marketplaces work. What started as a personal journey into e-commerce developed into a mission to help other brands navigate Amazon successfully.

Through Intermast, Jason has worked with brands across multiple industries, helping optimise listings, improve advertising performance, and implement strategies that drive long-term growth.

Today, the agency has supported brands in generating over £10M in Amazon marketplace revenue through structured optimisation and performance-driven strategies.

Jason is passionate about simplifying Amazon for brand owners and helping businesses unlock the full potential of the platform.

Sumekka Kwao

Sumekka Kwao is the co-founder of Intermast and plays a key role in the agency’s operations, client relationships, and strategic development.

She brings strong organisational leadership and a people-focused approach to the business, ensuring that clients receive consistent support and clear communication throughout their growth journey.

Sumekka works closely with both the internal team and client partners to maintain high standards across projects, helping brands implement strategies effectively while building long-term partnerships.

Building Intermast

Jason and Sumekka built Intermast with a clear mission:

To help brands grow sustainably on Amazon through expertise, transparency, and strategic thinking.

Their approach combines data-driven decision making with practical marketplace experience, allowing them to support businesses at different stages of growth—from early product launches to established brands looking to scale.