Castellan is a web and mobile development studio in Southern California. We build custom, high quality digital experiences for startups and global brands.
Your website, mobile app, or digital platform is important.
Whether you're looking for extra hands, support, or a complete redesign, we can help you realize your digital potential and fulfill your mission.
We build AI tools that help you get more done, faster—so you can focus on the most meaningful parts of your job.
Great design isn't just beautiful. It's functional, fast, and built to leave a lasting impression.
From design to deployment, we handle every step—so you get a seamless, performant digital experience without the hassle.
We build with inclusivity in mind, ensuring your platform meets WCAG standards so you can reach more users and avoid costly litigation.
We blend data-driven insights with artistry to create products that are visually stunning but also built to perform.
Scalable, high-performance solutions shouldn't come at a premium. We deliver efficient, superior solutions at a fraction of the cost.
We pride ourselves on communicating clearly and setting the right expectations, even before we start working with you. So, here's what you can expect from our partnership.
Build trust.
Every project is a partnership, and we are personally invested in your success.
Craft solutions.
Your unique goals require custom-built, innovative, and pragmatic solutions.
Keep going.
We're always ready to tackle the next phase or project — or help you take it on yourself.
Discover the value of Castellan for your organization. We'll give you a website demo and discuss your requirements.
