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Hi, I'm Julio, a Digital Product Designer that has worked with some of the world's most innovative companies & startups. I specialise in human-centred UX & UI design.

Hey there,

For over 10 years, I have designed apps, websites and built design teams for large companies and start-ups in freelance and full-time positions. I have gained experience as a Principal & Lead Product Designer and continue to follow and create best practice methods in user experience, research, interface & interaction design.

With each project has come new challenges and learning experiences, that have shaped my product design process and approach, to create the best customer-focused business outcomes.

Recently, I have been enjoying experimenting with AI technology. Get in touch to speak further, I love to chat over a fresh cup of coffee ☕️.  



Group Product Design Lead | October 2022 – Now
Creating design software to empower over 100 million people around the world to design. Team building, coaching, performance reviews, research, workshops, design strategy, design vision setting, user journey mapping, user testing, wireframes, prototypes, and interface design.


Block, Cash App

Principal Product Designer | January 2022 – October 2022
Designing financial technology for Block who owns Square, Tidal, Afterpay, Cash App & Money brands. Cash App Global Design, research, workshops, user testing, wireframes, prototypes, and interface design.



Principal Product Designer | August 2021 – October 2022
Designing financial technology and core user experiences for 13 million + Afterpay users worldwide. Money by Afterpay native app design, research, workshops, user testing, wireframes, prototypes, UX strategy, animations, and design facilitation.



Lead Product Designer | July 2019 – August 2021
Designing native apps and websites and building high-performing design teams for the Woolworths group, Australia’s largest supermarket brand. E-Commerce experiences on iOS and Android platforms for over 6 million users. Discover, define, design, and deliver.  Research, workshops, user testing, wireframes, prototypes, UX strategy, sketching, and design facilitation.


Academy Xi

Lead Design Mentor | July 2019 – August 2021
Part-time teaching students the UX & UI design methods, theory, frameworks, and tools needed to start working in the tech industry.
Student project and people management, live webinars, coaching, content creation, marking and grading, design critique facilitation, live event planning, and delivery.



Lead Product Designer | October 2018 – July 2019
Led the design and research of the new Spaceship Voyager App, along with some other FinTech initiatives to help over 50,000+ Australians set up and maintain a financially secure future.
Design team project and people management, stakeholder workshops, introduced UX into the company, created the new style guide, created the new design system, interface design, and implementation of my design framework and strategy.


Academy Xi

UX Design Immersive – Mentor | July 2018 – October 2018
After-work hours and weekends teaching working professionals the UX design skills, methodologies and frameworks needed to succeed in the industry. Student project and people management, live coaching, content creation, marking and grading, design critique facilitation, live event planning and delivery and  live event demonstratons.


Sydney Water

Senior Product Designer | September 2017 – October 2018
Designed and improved digital products for Sydney to use. Led projects in web, app, and VR. Worked closely with the CX team on designing omnichannel customer experiences. Lean UX build, measure and learn.
Research, workshops, user testing, wireframes, prototypes, interface design and UX strategy.



Product Designer | June 2015 – September 2017
Research and interface design for a suite of FinTech products for use in Australia and the UK. The brands we worked on were TAB, Keno, Newscorp & The Sun. Created native iOS, Android apps and websites at the biggest wagering company worldwide. Research, workshops, user testing, wireframes, prototypes, interface design and interaction design.


Freelance Designer

Freelance Product Designer | 2013 – Now
Freelance projects, from medical apps to life coach websites. Here are some of the favourite clients I have worked with. Foxtel, GetWell, FedeRent, Young Henry’s, Tandy Rowley, Intermedia, Social Snaps, Interbrand & BSI UK.


El Camino

Designer & Creative Director | January 2011 – March 2014
Founded and managed a boutique creative company based in Surry Hills, Sydney. Curated exhibitions, activations, live event experiences, marketing, graphic and web design. Some clients included: Keystone, Merivale, Robert Carmack, Ambush Gallery, Newtown Hotel, Abercrombie Hotel & Interbrand.







Optimal Workshop


Bachelor of Science  (First Class Honours)

Design, Technology and Innovation
Technological Institute of Dublin – 2018

Mixed Reality Design

Virtual and Augmented Reality
Academy Xi, Sydney – 2015


User Experience Design

Intensive UX Research and Design
General Assembly, Sydney – 2015

Diploma of Design

Graphic Design
Enmore Design Centre, Sydney – 2012

Diploma of Events Design

Design and Management
Ultimo TAFE, Sydney – 2011

© Julio Castellano