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Hi, I'm Jonathan James Castillo, a passionate User Experience and Product Designer with extensive experience creating user-centric designs that streamline workflows and enhance engagement. I love transforming user research and feedback into impactful design solutions that not only look great but also improve efficiency and customer satisfaction. Currently based in Denver, I focus on designing dynamic, version-aware design systems and collaborating closely with developers to deliver intuitive digital experiences. When I'm not designing, I enjoy diving into sectors like real estate, fintech, and Web3, continuously expanding my knowledge and skills.…Hi, I'm Jonathan James Castillo, a passionate User Experience and Product Designer with extensive experience creating user-centric designs that streamline workflows and enhance engagement. I love transforming user research and feedback into impactful design solutions that not only look great but also improve efficiency and customer satisfaction. Currently based in Denver, I focus on designing dynamic, version-aware design systems and collaborating closely with developers to deliver intuitive digital experiences. When I'm not designing, I enjoy diving into sectors like real estate, fintech, and Web3, continuously expanding my knowledge and skills.

Jonathan James Castillo

Product Designer, Designer, Creative Director, +1

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Hi, I'm Jonathan James Castillo, a passionate User Experience and Product Designer with extensive experience creating user-centric designs that streamline workflows and enhance engagement. I love transforming user research and feedback into impactful design solutions that not only look great but also improve efficiency and customer satisfaction. Currently based in Denver, I focus on designing dynamic, version-aware design systems and collaborating closely with developers to deliver intuitive digital experiences. When I'm not designing, I enjoy diving into sectors like real estate, fintech, and Web3, continuously expanding my knowledge and skills.…Hi, I'm Jonathan James Castillo, a passionate User Experience and Product Designer with extensive experience creating user-centric designs that streamline workflows and enhance engagement. I love transforming user research and feedback into impactful design solutions that not only look great but also improve efficiency and customer satisfaction. Currently based in Denver, I focus on designing dynamic, version-aware design systems and collaborating closely with developers to deliver intuitive digital experiences. When I'm not designing, I enjoy diving into sectors like real estate, fintech, and Web3, continuously expanding my knowledge and skills.

Available to hire

Hi, I’m Jonathan James Castillo, a passionate User Experience and Product Designer with extensive experience creating user-centric designs that streamline workflows and enhance engagement. I love transforming user research and feedback into impactful design solutions that not only look great but also improve efficiency and customer satisfaction.

Currently based in Denver, I focus on designing dynamic, version-aware design systems and collaborating closely with developers to deliver intuitive digital experiences. When I’m not designing, I enjoy diving into sectors like real estate, fintech, and Web3, continuously expanding my knowledge and skills.

Skills

Figma

Jira

Azure

Experience Level

Figma

Expert

Jira

Intermediate

Azure

Intermediate

Work Experience

Product Designer at XLR8

May 31, 2025 - July 22, 2025

Developed user-friendly designs for a startup, streamlining developer workflows and reducing development time. Collaborated with developers to focus on important UX decisions needed to satisfy clients. Utilized user research data to inform design decisions throughout the product development lifecycle, resulting in a 24.5% decrease in bounce rates on key screens.

Product Designer at RevStar

February 28, 2024 - July 22, 2025

Performed in-depth user research and data analysis to identify key pain points and design opportunities, resulting in a 20% increase in UX KPIs. Streamlined project delivery processes by implementing agile methodologies, resulting in a 15% increase in on-time project completion rates. Decreased bug rates by 9% in signature products that required active collaboration with clients.

User Experience Designer at Oakwood Homes

February 1, 2024 - Present

Led the design of a distinctive, user-centric experience that empowered homebuyers to fully customize and purchase homes online with ease and confidence. Increased customer engagement by translating in-depth user research and feedback into impactful UX improvements. Built a dynamic, version-aware design system in Figma that streamlined handoff and significantly reduced development time.

User Experience Designer at Robinland

March 31, 2023 - July 22, 2025

Collaborated closely with creative directors from industry-leading companies such as Google, Snapchat, and VISA, to conceptualize and execute Robinland's expansive web and mobile application. Assisted in administering and analyzing research from existing prototypes, effectively incorporating feedback into new design iterations. Spearheaded the design strategy in the acquisition of Robinland by ARK7, increasing user base by 40,000.

User Experience Design Intern at Instahub

May 31, 2021 - July 22, 2025

Assisted in the design and implementation of a scalable design system, ensuring consistent UI components across both mobile and desktop for their SaaS. Involved in UX efforts to create a dashboard interface for real-time monitoring of energy usage, enhancing data visualization and user engagement.