Jay Herbert
Senior UX/UI Designer
UX/UI designer with 14+ years of experience across finance, gaming and DeFi. Recent work includes ether.fi and Magic Eden, with previous lead roles at BOB, Pari.fi and Interlay. My work covers research, user flows, interface design, prototyping and design systems.
I use Claude Code, Codex, Cursor and v0 to build working prototypes, alongside Midjourney and Higgsfield for visual exploration.
Experience
ether.fi · UX/UI Designer · Contract
Launched August 2026Joined on a short-term contract to help deliver ether.fi Summer, an upgrade to its crypto neobank.
- •Led UX/UI design for Borrow & Lend and Trade, covering crypto and tokenized stocks.
- •The associated lending market passed $100M in deposits in its first week and reached $237M by the end of the month.
Magic Eden · Senior UX Designer
2024 - 2026Designed NFT marketplace experiences across Bitcoin, Ethereum, Solana and Polygon.
- •Owned design for NFT discovery, listing and trading across web and mobile.
- •Researched problems in the trading journey and worked with product and engineering on improvements.
- •Simplified wallet connections and transactions across chains.
- •Built and maintained shared design components across platforms.
BOB (Build on Bitcoin) · Lead UX Designer
2023 - 2024Led product design from early research through launch, working with product, engineering and marketing.
- •Used research and competitor analysis to plan onboarding and wallet connection flows.
- •Designed the mainnet and testnet apps, marketing website and launch materials.
- •Designed journeys for people new to Bitcoin and experienced DeFi users.
- •Worked on the airdrop campaign, which attracted $320M+ in total value locked within three weeks.
- •The platform onboarded 83K+ wallets and facilitated more than 1,000 BTC in bridged assets.
Pari.fi · Lead UX Designer
2023 - 2024Redesigned the platform’s UX and visual identity, covering trading, liquidity provision and staking.
- •Took designs from wireframes through to implementation.
- •Tested core flows with early users and revised them based on their feedback.
- •Built the design system and defined the brand’s visual identity.
- •The platform reached 6,200+ active users in its first weeks and $302M+ in trading volume during its first month.
Interlay.io · Lead UX Designer
2021 - 2023Led the redesign of Interlay’s DeFi app for desktop and mobile.
- •Designed the user experience for its trustless Bitcoin bridge to Polkadot.
- •Built the design system and supporting UX documentation.
Spectrum Protocol · Lead UX Designer
2021 - 2022Redesigned the UX and UI for a yield optimizer on Terra.
- •Used user testing to identify problems and improve key flows.
- •Created a responsive interface and design system.
- •During my time there, total value locked grew from $100M to $230M+.
Nexus Protocol · Lead UX Designer
2021 - 2022Designed a DeFi platform offering yield strategies and liquidation protection on Terra.
- •Designed vaults, trading, governance and cross-chain bridge features.
- •Established shared interface patterns across the product.
- •During my time there, total value locked grew from $30M to $150M+.
Tenerity · Senior UX Designer
2020 - 2021Designed native and web applications for clients including CNN, British Gas, Vodafone and Chevrolet.
- •Ran user testing workshops and used the findings to revise prototypes.
- •Built and maintained design systems used across multiple brands.
CX Loyalty · Lead UX Designer
2019 - 2020Led UX design for mobile and desktop loyalty platforms serving NatWest and RBS customers.
- •Improved conversion flows within banking compliance requirements.
- •Maintained design systems across brands and platforms.
- •Created digital and print marketing materials.
Party Poker · Lead UX Designer
2017 - 2019Led the redesign of the core poker product for desktop and mobile.
- •Created a shared design system for web and native apps.
- •Designed poker table illustrations and game interface assets.
- •Produced digital and print marketing materials.
Entain · UX Designer
2015 - 2017Designed products for Ladbrokes, Foxy Bingo, Party Casino and Bwin.
- •Redesigned the Ladbrokes cashier to simplify deposits.
- •Worked on conversion improvements across the group’s brands.
- •Produced UI specifications and design documentation.
Betway Group · UX Designer
2012 - 2015Worked across product UX and marketing design in a small team, progressing from junior to senior designer.
- •Mentored junior designers.
- •Created 3D assets for Premier League stadium advertising.
GIMO/Netbet · Graphic Designer / UI Designer
2010 - 2012Worked across graphic and interface design, progressing from junior to senior level.
Education
University of the Arts, London
BA (Hons) Digital Media Production
Graduated: 2010