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The Core Team

Steve McPhilliamy

Giselle McPhilliamy

Steve McPhilliamy

Steve has over 25 years of experience in product innovation and organizational growth in medical and consumer technology. He has had the opportunity to collaborated with academic institutions, government agencies, industry leaders, and philanthropic organizations. He established design stack in early 2025, combining high-performing design teams with AI systems to drive innovative client solutions.

Antonio Belton

Giselle McPhilliamy

Steve McPhilliamy

Antonio is a design leader with over 25 years of experience guiding

transformative innovation across med-tech, life sciences, consumer goods, electronics, appliances, and industrial equipment. He has expertise that spans contextual and ethnographic research, design strategy, visual brand language, UI/UX integration, prototyping, and structural packaging.

Chad Davis

Giselle McPhilliamy

Giselle McPhilliamy

Chad, an  Industrial Design Leader with over 25 years of experience, has successfully created groundbreaking products, systems, services, and user experiences. He prioritizes user needs in the design process and translates research findings into actionable insights to develop innovative solutions. Chad collaborates with engineering and marketing teams to ensure realistic, cost-effective, and manufacturable deliverables.

Giselle McPhilliamy

Giselle McPhilliamy

Giselle McPhilliamy

Giselle is a machine learning engineer. She graduated with highest honors from Georgia Tech, earning a degree in Computer Science with a minor in Biology, and is currently completing her master’s in Machine Learning. She has experience in multiple software and machine learning AI development roles and has a research background developing transformer-based models for predictive health applications in cancer genomics.

About Us

A team of experienced product developers

Over seventy five years of collective design and development experience focused on medical devices, drug delivery systems, and consumer products. Our team and our AI system are all grounded in a Human-Centered Design approach.

Based in Chicago

Our team supports new product innovation for Startups to Fortune 500 Companies.  We seek out new projects that are entrepreneurial in nature, technologies that can have an impact, and ideas that can improve lives. 

Unique combination of AI + Design

Design and development + AI systems for innovative driven solutions at a rapid pace. The proven development process is the same, but we are utilizing our proprietary AI system to innovate at a faster rate. 

Frequently Asked Questions

Please reach us at sales@design-stack.net if you cannot find an answer to your question.

We believe in small teams that drive towards targeted outcomes, we do not rely on a solo project manager or single program leads. The strategic team members act collectively on fast paced processing and utilize digital tools to confirm decisions with our clients and keep all parties engaged and aligned. 


Our team is focused on the integration of AI and product development to solve client needs. Many of our clients are startups that run in stealth mode until they are ready for a product release.  You will not find us on social media marketing campaigns  and we do not hire agencies to promote our services. Our growth and client list  is based on word of mouth and strong relationships, not hype or bots. If additional expertise is required for the program, we work with various development partners contingent upon the specific needs for each project.


Startups are different than big companies and because of that we structure our process to support the needs of the group.  We established a development path that provides an option based on both parties' interests, to roll a percentage of the fees into equity at a specific time in the program. To learn more about our portfolio of startup companies and our process drop us a email. 


Design-stack’s AI system collaborates iteratively with our core design team to expand ideas, identify user needs, identify technology and design trends, map out competitive market product solutions, forecast on next-generation concepts, and identify gaps in intellectual property. While Henry may not be adept at generating new concepts without human input, the system’s highly iterative nature necessitates the expertise of an experienced product development team to interpret Henry’s findings. The synergistic collaboration between the design team and AI has yielded unique and novel solutions that seamlessly incorporate a multitude of inputs at an unprecedented rapid pace.  


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