Designing custom products

Designing custom products for half a decade for the best data-driven direction

for half a decade for the

best data-driven direction

User Experience Design • Remote

What People Say.

Elise Jiang

PM @ Stripe

Jonathan exhibits a deep passion for UX design, coupled with a wonderful eye for aesthetics and positive can-do attitude, and would be a delightful addition to any team looking for a sharp designer!

Elise Jiang

PM @ Stripe

Jonathan exhibits a deep passion for UX design, coupled with a wonderful eye for aesthetics and positive can-do attitude, and would be a delightful addition to any team looking for a sharp designer!

Elise Jiang

PM @ Stripe

Jonathan exhibits a deep passion for UX design, coupled with a wonderful eye for aesthetics and positive can-do attitude, and would be a delightful addition to any team looking for a sharp designer!

Oleh Hryhoriev

Lead Designer @ RevStar

I worked with Jon for almost 2 years at RevStar Consulting and as his lead, I can say that Jon is a very talented designer with a sharp mind and great technical skills that always helped us to deliver the best result to all our clients. Jon is equally good at being an independent designer on the project and a good team player with good communication skills and a willingness to make his impact to achieve common goals. He stays on top of the latest technologies and trends and is always eager for new knowledge. Jon has my sincere recommendation, and I am confident that he will excel in any design work he undertakes.

Oleh Hryhoriev

Lead Designer @ RevStar

I worked with Jon for almost 2 years at RevStar Consulting and as his lead, I can say that Jon is a very talented designer with a sharp mind and great technical skills that always helped us to deliver the best result to all our clients. Jon is equally good at being an independent designer on the project and a good team player with good communication skills and a willingness to make his impact to achieve common goals. He stays on top of the latest technologies and trends and is always eager for new knowledge. Jon has my sincere recommendation, and I am confident that he will excel in any design work he undertakes.

Oleh Hryhoriev

Lead Designer @ RevStar

I worked with Jon for almost 2 years at RevStar Consulting and as his lead, I can say that Jon is a very talented designer with a sharp mind and great technical skills that always helped us to deliver the best result to all our clients. Jon is equally good at being an independent designer on the project and a good team player with good communication skills and a willingness to make his impact to achieve common goals. He stays on top of the latest technologies and trends and is always eager for new knowledge. Jon has my sincere recommendation, and I am confident that he will excel in any design work he undertakes.

Venus Li

Former COO @ Robinland

Jonathan demonstrated remarkable talent and creativity in every project he undertook. His designs consistently surpassed expectations, showcasing his keen eye for aesthetics, functionality, and user experience. He has a deep understanding of design principles and stays updated with the latest trends and technologies in the field. One of Jonathan's greatest strengths is his ability to learn new skills and apply them effectively to his work. He always showed a strong willingness to expand his knowledge and expertise, and he quickly grasped new concepts and techniques. Jonathan's adaptability and enthusiasm for learning make him an invaluable asset to any team. Throughout his time at Robinland, Jonathan consistently demonstrated professionalism, reliability, and a strong work ethic. He collaborated effectively with colleagues and stakeholders, communicated his ideas clearly, and always met deadlines with high-quality work.

Venus Li

Former COO @ Robinland

Jonathan demonstrated remarkable talent and creativity in every project he undertook. His designs consistently surpassed expectations, showcasing his keen eye for aesthetics, functionality, and user experience. He has a deep understanding of design principles and stays updated with the latest trends and technologies in the field. One of Jonathan's greatest strengths is his ability to learn new skills and apply them effectively to his work. He always showed a strong willingness to expand his knowledge and expertise, and he quickly grasped new concepts and techniques. Jonathan's adaptability and enthusiasm for learning make him an invaluable asset to any team. Throughout his time at Robinland, Jonathan consistently demonstrated professionalism, reliability, and a strong work ethic. He collaborated effectively with colleagues and stakeholders, communicated his ideas clearly, and always met deadlines with high-quality work.

Venus Li

Former COO @ Robinland

Jonathan demonstrated remarkable talent and creativity in every project he undertook. His designs consistently surpassed expectations, showcasing his keen eye for aesthetics, functionality, and user experience. He has a deep understanding of design principles and stays updated with the latest trends and technologies in the field. One of Jonathan's greatest strengths is his ability to learn new skills and apply them effectively to his work. He always showed a strong willingness to expand his knowledge and expertise, and he quickly grasped new concepts and techniques. Jonathan's adaptability and enthusiasm for learning make him an invaluable asset to any team. Throughout his time at Robinland, Jonathan consistently demonstrated professionalism, reliability, and a strong work ethic. He collaborated effectively with colleagues and stakeholders, communicated his ideas clearly, and always met deadlines with high-quality work.

Ken Pomella

CEO @ RevStar

During his time at RevStar, Jon has proven himself to be an exceptional UI/UX Designer. His willingness to embrace new challenges and his ability to swiftly complete a high volume of work has been truly remarkable. Jon's dedication and skill set have made a significant impact on our projects, consistently delivering designs that not only meet but exceed expectations. His contribution to the team is invaluable.

Ken Pomella

CEO @ RevStar

During his time at RevStar, Jon has proven himself to be an exceptional UI/UX Designer. His willingness to embrace new challenges and his ability to swiftly complete a high volume of work has been truly remarkable. Jon's dedication and skill set have made a significant impact on our projects, consistently delivering designs that not only meet but exceed expectations. His contribution to the team is invaluable.

Ken Pomella

CEO @ RevStar

During his time at RevStar, Jon has proven himself to be an exceptional UI/UX Designer. His willingness to embrace new challenges and his ability to swiftly complete a high volume of work has been truly remarkable. Jon's dedication and skill set have made a significant impact on our projects, consistently delivering designs that not only meet but exceed expectations. His contribution to the team is invaluable.

David Mumford

VP @ RevStar

Jon is an excellent designer with a strong creative eye, efficient process, and good communication skills, making him a positive asset to any team.

David Mumford

VP @ RevStar

Jon is an excellent designer with a strong creative eye, efficient process, and good communication skills, making him a positive asset to any team.

David Mumford

VP @ RevStar

Jon is an excellent designer with a strong creative eye, efficient process, and good communication skills, making him a positive asset to any team.

Adina Zhu

Designer @ ARK7

I had the pleasure of working with Jonathan at Robinland, where he served as a UI/UX designer. Jonathan is not only dedicated to his craft but also highly efficient. He was responsible for designing Robinland's entire brand visual identity and creating an exceptional website that significantly enhanced our user experience. His ability to communicate clearly made collaboration easy, and his positive attitude was a constant source of motivation for everyone on the team. Jonathan consistently delivered high-quality work that exceeded our expectations, making him an invaluable asset to any project.

Adina Zhu

Designer @ ARK7

I had the pleasure of working with Jonathan at Robinland, where he served as a UI/UX designer. Jonathan is not only dedicated to his craft but also highly efficient. He was responsible for designing Robinland's entire brand visual identity and creating an exceptional website that significantly enhanced our user experience. His ability to communicate clearly made collaboration easy, and his positive attitude was a constant source of motivation for everyone on the team. Jonathan consistently delivered high-quality work that exceeded our expectations, making him an invaluable asset to any project.

Adina Zhu

Designer @ ARK7

I had the pleasure of working with Jonathan at Robinland, where he served as a UI/UX designer. Jonathan is not only dedicated to his craft but also highly efficient. He was responsible for designing Robinland's entire brand visual identity and creating an exceptional website that significantly enhanced our user experience. His ability to communicate clearly made collaboration easy, and his positive attitude was a constant source of motivation for everyone on the team. Jonathan consistently delivered high-quality work that exceeded our expectations, making him an invaluable asset to any project.

Travis Woods

PM @ RevStar

Jonathan's approach to design is both intuitive and data-driven, ensuring that every prototype is not only aesthetically pleasing but also user-friendly and aligned with the project's goals. His commitment to understanding client needs and his keen eye for detail have greatly contributed to the success of our projects. He navigates the complex process of design with ease, making significant contributions that enhance the user experience and exceed client expectations. Jonathan Castillo is a true asset to any team, bringing a blend of creativity, professionalism, and technical expertise that is rare to find. I wholeheartedly recommend him to any organization seeking to elevate their user interface design through thoughtful, client-centered prototypes and designs. Jonathan is not just a designer; he's a visionary who can make any dream a tangible, interactive experience.

Travis Woods

PM @ RevStar

Jonathan's approach to design is both intuitive and data-driven, ensuring that every prototype is not only aesthetically pleasing but also user-friendly and aligned with the project's goals. His commitment to understanding client needs and his keen eye for detail have greatly contributed to the success of our projects. He navigates the complex process of design with ease, making significant contributions that enhance the user experience and exceed client expectations. Jonathan Castillo is a true asset to any team, bringing a blend of creativity, professionalism, and technical expertise that is rare to find. I wholeheartedly recommend him to any organization seeking to elevate their user interface design through thoughtful, client-centered prototypes and designs. Jonathan is not just a designer; he's a visionary who can make any dream a tangible, interactive experience.

Travis Woods

PM @ RevStar

Jonathan's approach to design is both intuitive and data-driven, ensuring that every prototype is not only aesthetically pleasing but also user-friendly and aligned with the project's goals. His commitment to understanding client needs and his keen eye for detail have greatly contributed to the success of our projects. He navigates the complex process of design with ease, making significant contributions that enhance the user experience and exceed client expectations. Jonathan Castillo is a true asset to any team, bringing a blend of creativity, professionalism, and technical expertise that is rare to find. I wholeheartedly recommend him to any organization seeking to elevate their user interface design through thoughtful, client-centered prototypes and designs. Jonathan is not just a designer; he's a visionary who can make any dream a tangible, interactive experience.

Mark Ohler

PM @ RevStar

I worked with Jon on several projects. He is a talented artisan in web and UI/UX design. It's been a pleasure working alongside Jon, and I am confident that his skills and qualities will make a significant impact wherever his career takes him. I wholeheartedly recommend Jonathan Castillo to any organization seeking a dedicated, talented, and results-driven professional.

Mark Ohler

PM @ RevStar

I worked with Jon on several projects. He is a talented artisan in web and UI/UX design. It's been a pleasure working alongside Jon, and I am confident that his skills and qualities will make a significant impact wherever his career takes him. I wholeheartedly recommend Jonathan Castillo to any organization seeking a dedicated, talented, and results-driven professional.

Mark Ohler

PM @ RevStar

I worked with Jon on several projects. He is a talented artisan in web and UI/UX design. It's been a pleasure working alongside Jon, and I am confident that his skills and qualities will make a significant impact wherever his career takes him. I wholeheartedly recommend Jonathan Castillo to any organization seeking a dedicated, talented, and results-driven professional.

Frequently asked questions

Got a question? I've got an answer! If your question isn't on here please feel free to reach out via email.

What do you specalize in?

What is your experience with design hand off?

What tools do you use for research?

What management tools do you have experience in?

Why Figma?

What do you specalize in?

What is your experience with design hand off?

What tools do you use for research?

What management tools do you have experience in?

Why Figma?

What do you specalize in?

What is your experience with design hand off?

What tools do you use for research?

What management tools do you have experience in?

Why Figma?

Previous Experience

Explore my extensive background in User Experience (UX), spanning from dynamic start-ups to Fortune 500 corporations. With a wealth of experience accumulated over half a decade in this field, I possess the expertise necessary to meet your diverse needs with precision and effectiveness.