I’m Giles “Big Kahuna” Sims and for me, design isn’t just a skill. It’s a way of life.
Big Kahuna is more than a nickname—it’s how I show up in the world: with warmth, curiosity, creativity, and the easygoing spirit of aloha. I bring that same energy into every project I touch, whether I’m crafting a bold new logo, building out a visual identity, or designing a custom apparel line that turns heads.

I work at the crossroads of graphic design and UX/UI, blending artistry with strategy to create experiences that are not only beautiful but purposeful. From building brand identities that speak volumes to designing intuitive interfaces that guide users with ease, I’m all about connecting visuals to real, human moments.

My UX/UI work focuses on user-centered thinking: making sure every button, flow, and interaction feels natural and intentional. I’ve led projects from initial wireframes to fully clickable prototypes, always keeping empathy and clarity at the center of the process. And when it comes to visual design, I bring a sharp eye for detail, bold color palettes, and a flair for creating work that’s clean, compelling, and full of life.

Whether I’m working on a website, app interface, t-shirt graphic, or social media kit, I approach each project with the same goal: to help people and brands express themselves in a way that’s vibrant, thoughtful, and true to who they are.

So if you’re ready to ride the creative wave, I’m here with my board waxed and ready.

Live aloha. Design with heart. Ride the wave.

Who is Big Kahuna?

Mission

I create bold, intuitive, and meaningful designs that connect people to ideas, brands, and experiences with the spirit of aloha guiding every step.

As a graphic and UX/UI designer, I blend strategic thinking with vibrant creativity to craft visual identities, digital products, and user journeys that are both functional and unforgettable.

Whether I’m collaborating with a team or working directly with clients, my mission is to bring value through thoughtful design, authentic storytelling, and a positive, laid-back approach. I’m here to help businesses and individuals express who they are: clearly, confidently, and creatively.

Designs with an Aloha flair

Ready to take your brand—or your user experience—to the next level? I bring the aloha spirit to everything I design, blending vibrant visuals with thoughtful, user-centered strategy.

Whether you need a bold new logo, a complete brand refresh, or a smooth, intuitive digital experience, I specialize in creating designs that feel as effortless and enjoyable as a day at the beach. From full branding packages to interactive prototypes, I’m here to make your ideas not only look amazing—but work beautifully, too.

Let’s ride the creative wave together and build something that’s both stunning and smart.
Live Aloha. Design Aloha.