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Hello, I’m Jason.

As a passionate and driven designer, my goal is to improve people’s lives by creating seamless, meaningful experiences. I’m motivated by the possibilities of the future—imagining what could be, not just what is. Innovation is central to who I am; I believe in pushing boundaries, exploring beyond constraints, and designing solutions that are not only impactful today but thoughtfully future-proofed for tomorrow.
JasonPic

Key Principles

Innovation

I’ve always been a maker—constantly exploring new ideas, pushing boundaries, and finding creative ways to solve problems.

Learning

Curiosity drives me. Whether it’s surfing, snowboarding, or learning new tools, I believe growth comes from trying things that challenge us.

Collaboration

I thrive in team environments. Listening, sharing, and building together creates stronger, more meaningful products.

Passion

I’m energised by design, technology, and storytelling—from comics and films to games and UX craft. Passion fuels the work.

Approach

My work as a Product Designer revolves around collaboration, clarity, and continuous learning. On a typical day, I partner with Designers, Product Managers, Engineers, and stakeholders—moving fluidly between standups, discovery sessions, sprint planning, and deeper strategic conversations. I often work across multiple products or features at once, shaping outcomes based on priorities agreed with the Programme Management.

Collaboration is central to how I work. I bring Product Managers, Engineers, Growth teams, and stakeholders into the Discovery phase whenever possible. Through workshops and shared exploration, we frame better problems and uncover opportunities we wouldn’t reach alone. Great products don’t happen in isolation—they’re built through collective insight.

Process

What I’m Good At

Product Growth
Product-Led 
Growth

I’ve always been a maker—constantly exploring new ideas, pushing boundaries, and finding creative ways to solve problems.

Workshop Facilitation
Workshop 
Facilitation

Curiosity drives me. Whether it’s surfing, snowboarding, or learning new tools, I believe growth comes from trying things that challenge us.

Building Products
Building
Products

I thrive in team environments. Listening, sharing, and building together creates stronger, more meaningful products.

Scaling Design System
Scaling Design Systems

I’m energised by design, technology, and storytelling—from comics and films to games and UX craft. Passion fuels the work.

How’s it like to work with Jason?

JackHorton
Jack Horton
Delivery Manager (Digital) at Virgin Media O2

I worked with Jason during out time together at YOOX Net A Porter. Jason is a breath of fresh air that brings great ideas, pragmatism and fun to the table. He worked really well with our engineering team and always went over and above to make sure that we were creating best in class experiences for our customers. He was a great asset to our team and any place is lucky to have him! I’m confident our paths will cross again in the future 🙌

ConorMcGann
Conor McGann
CSS Shopping ads Consultant, PerfX at Google

Jason was extremely easy to work with. Thanks to his curiosity & natural aptitude for what good UI means, the HN Team & I were able to truly transform the look & feel of Product Details Pages together and even improve the overall UX of the Harvey Nichols mobile site through to checkout. I would strongly recommend Jason to any other company as he has strong UX/Design knowledge and was extremely fluid in working style.

ChrisBayley
Chris Bayley
Head of Digital Solutions at Lewisham Council

Jason is a very hard working UX Designer who puts customers at the heart of his work. He very quickly is able to work up designs, wireframes and prototypes to help improve the customer journey. During my time as his manager, he developed his story telling ability to accurately identify pain points using various data sources, to design and test solutions, and to ensure these are developed with the agile software team. I look forward to working with Jason again.

Just message me on

me@jasoncastaneda.co.uk