Diamond Welcomes Creative Duo Hayley Mcostrich and Anton Mwewa

Diamond continues to build their creative bench weight with the exciting addition of award-winning creative duo Hayley Mcostrich and Anton Mwewa. The pair join the agency as associate creative directors (ACDs), reporting directly to chief creative officer Peter Ignazi. With a reputation for bold, culture-driven work, Hayley and Anton are set to bring their signature creativity to Diamond’s growing roster of high-profile clients.

Joining from NoFixedAddress, the duo bring with them a rich portfolio of impactful work for industry giants such as P&G, Kellogg’s, Maple Leaf Foods, Molson Coors, and Air Canada. Known for pushing creative boundaries, they share a passion for developing ideas that not only connect with audiences but also spark cultural conversations.

“There’s a buzz coming from Diamond that we just couldn’t ignore,” says Hayley. “The agency’s creative energy aligns perfectly with our vision of making brands famous by creating work that delivers results.”

Peter echoes the sentiment, emphasizing that the addition of Hayley and Anton is a perfect match for Diamond’s commitment to innovative problem-solving. “When looking at our agency’s future, and the importance we place on delivering measurable results for clients, Hayley and Anton felt like the perfect fit,” says Peter. “They have a real talent for tackling challenges in the most creatively unexpected ways.” 

The hires mark the latest in a series of strategic moves by Diamond to broaden its talent pool and deliver cutting-edge work for brands in today’s fast-evolving landscape. As part of its ongoing transformation, the agency is committed to expanding beyond traditional campaigns to offer clients a more holistic approach to brand building.

Hayley and Anton's arrival follows a string of new senior hires and major business wins for Diamond, including Canadian Blood Services, Post Cereal, and Sinai Health. With a deepening bench of talent and a growing portfolio of clients, the agency is positioned to continue its rise as a creative force to watch.