The Executive Committee and Senior Management brings together individuals with a mixture of experience, knowledge and skills, creating a well-rounded and dynamic management team. The team’s focus is to achieve profitable growth, increase market penetration and develop innovative products within the digital and mobile space. Gruden’s Executive Committee is responsible for working with the Board to create the group’s direction for success, and works with the wider Senior Management team to direct and drive its implementation.

Todd Trevillion

Chief Operating Officer

As Co-Founder of The Gruden Group, Todd is tasked with the day-to-day management of the operations of the business of Gruden. His experience in developing digital businesses, commercialisation of web assets and platforms, monetisation of mobile apps in enterprise, government and start-up communities has been constant since the beginning of the Internet. Reporting to our CEO, Todd’s focus is executing Gruden’s business plans according to its business model ensuring production, delivery, strategic direction, daily, quarterly or annual measured results are on point.

Brent Trimnell-Ritchard

Group Client Services Director

Brent was an Executive Director of Gruden with a focus on the web development division within the business. Starting out studying commercial design, he began his career as an interactive graphic designer. During that time he worked across a spectrum of creative disciplines, finally settling within web/digital. Utilising his design background and solid understanding of customer needs, Brent now drives the engagement of Gruden’s major clients, ensuring the growth and retention of these key partnerships, as well as external third party relationships.



Costantino Marotta

GM, Performance Marketing

Originally from Italy, Costantino has been living in Australia for over eight years. Known as Costa to his colleagues, he started working for Gruden’s Performance Marketing arm (originally known as Blackglass back in 2009). Costa was promoted to a number of different roles including Head of Social Media and Group Account Director. With experience across marketing and communication roles, Costa is an all-round digital marketer who brings a creative and engaging approach to fostering long term relationships.

As General Manager for the Digital Services arm of the business, he is focussed on planning and managing the delivery of the high-quality services and operations expected by our clients. He also leads the performance marketing, social media, content and SEO teams.

Gavin Gorazdowski

Gavin Gorazdowski

General Manager of mobileDEN.

Gavin is the General Manager of mobileDEN. An entrepreneur from a young age, prior to joining mobileDEN., Gavin set up and ran two high growth digital agencies as well as co-founding two successful online product ventures. He has a passion for creating customer value and 20 years of experience in driving digital transformation, developing clients’ digital strategies and online monetisation. He is responsible for executing the product strategy and vision for the mobileDEN. platform. He holds a degree from UTS in Applied Science with a double major in Information Science & Computer Systems Analysis & design.

John Butterworth

John Butterworth

Chief Strategy Officer

Prior to joining Gruden, John was a partner at Orchestrate, a boutique consulting firm offering digital strategy advisory services to enterprise clients. Starting his digital career at pioneering Internet firm OzEmail in the mid-1990’s, John has worked in a variety of roles across the breadth of the digital industry, including a number of years as Chief Executive of AIMIA, the digital industry association for Australia. As Head of Digital Services for Gruden, John has responsibility for developing and managing the implementation of product and digital strategies that support the growth of the company.

Ymania Brown

Head of Legal Services/IP

As the in-house counsel, Ymania manages all contractual matters (standard and nonstandard service contracts) and client attorney/lawyer communication. She advises Gruden on IP commercialisation as the IP Specialist in the areas of trademark law, copyright law, and designs law as well as the lead in industrial relations, workforce safety and the relevant statutory requirements for Gruden.

As in-house counsel, Ymania manages all contractual matters (standard and nonstandard service contracts) and client attorney/lawyer communication. She also advises the group on IP commercialisation as the in-house trademarks specialist.