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Heidi CastilloHC
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Heidi Castillo

@heidicastillo

Senior Product Designer using generative and agentic AI to design and validate user journeys across YNAB’s web and mobile.

Mexico
Message

I’ve led end-to-end product design at YNAB, running discovery through validation across critical mobile and web user journeys for the Core Flows Team. I co-owned the design and launch of “Cost to be Me” and “Focused Views,” helping users visualize cost of living and dynamically segment spending plans.

I also worked the “Targets” flow with visual, usability, and accessibility improvements—an update that drove a 22% increase in feature adoption. Then I led design for “YNAB Financial Wellness,” the company’s first B2B platform, onboarding dozens of employers and thousands of employees in its first year.

Earlier, at Beyond.dev I managed end-to-end design for digital solutions across startup and global brand clients, including launching “Manka” across native iOS and Android. I’ve also shaped design practice as a User Experience Leader at Elevation Mechanics by standardizing research frameworks, design systems, and communication tools.

Experience

Work history, roles, and key accomplishments

BE

Product Designer

Beyond.dev

Feb 2020 - Mar 2022 (2 years 1 month)

Led design of digital solutions for B2B and B2C clients, including end-to-end design of 'Manka' food delivery app and redesign of Rappi's API platform for developer experience.

EM

User Experience Leader

Elevation Mechanics

Mar 2017 - Jul 2019 (2 years 4 months)

Responsible for UX design across a portfolio of startups, leading development for web, iOS, and Android platforms. Defined and standardized design practices including research frameworks and design systems.

TE

UI/UX Designer

Tecnoguia Empresarial

May 2016 - Mar 2017 (10 months)

Developed multiple web solutions for client portfolio, managing maintenance, SEO optimization, and UI iterations. Served as primary client contact ensuring goal alignment.

LE

UI/UX Designer

Lendik

Dec 2015 - May 2016 (5 months)

Collaborated on user research through interviews and metrics analysis, translating insights into high-fidelity prototypes and interfaces for mobile banking app.

GB

Graphic Designer

Grupo Boxito

Jan 2014 - Aug 2014 (7 months)

Led conceptualization, development, and rollout of advertising campaigns, ensuring consistent brand identity across customer journey.

LA

UI/UX Designer

Locker Design Agency

Jun 2013 - Jan 2014 (7 months)

Responsible for UX/UI design for diverse portfolio of websites, partnering with engineering team to ensure visual consistency and web usability best practices.

Education

Degrees, certifications, and relevant coursework

Universitat Pompeu Fabra logoUF

Universitat Pompeu Fabra

Master, Cognitive Systems and Interactive Media

2014 - 2015

Master in Cognitive Systems and Interactive Media from Universitat Pompeu Fabra from 2014 to 2015.

CA

Centro de Estudios de las Américas

Bachelor of Arts, Graphic Design and Advertisement

2009 - 2013

BA in Graphic Design and Advertisement from Centro de Estudios de las Américas from 2009 to 2013.

Tech stack

Software and tools used professionally

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