Senior UI/UX Designer

Molecule and BIO.xyz are building the foundation of Decentralized Science (DeSci) - where biotech meets web3 to make scientific research community-owned, transparent, and faster to market.

Molecule provides the infrastructure to turn intellectual property (IP) into programmable, on-chain assets through our IP-NFT framework and evolving protocol stack. This enables researchers, patients, and communities to fund and govern biotech projects in new, open ways.

BIO.xyz is the coordination and economic layer of DeSci, powering BioDAOs through funding, governance, and ecosystem alignment.

Together, we are creating a new model for scientific discovery - one where breakthroughs are owned and advanced by the communities that believe in them.

We’re looking for a senior Product Designer to shape the user experience and visual language of Molecule’s web and mobile products. You’ll turn product goals and complex requirements into clear, intuitive interfaces, and you’ll own the design system that keeps everything we ship consistent.

You’ll sit within the Product team and work closely with Engineering and Marketing. You’ll take work from first concept through to pixel-perfect execution and implementation. We move fast, so we value iteration over perfection, quick prototypes over long specs, and designers who are comfortable using AI tools to explore ideas and test them early.

This is a role for someone who is as comfortable in a component library as in a whiteboard session. It suits someone who wants to define what great product design looks like in a space where the rules are still being written.

WHAT YOU’LL DO

• Design and refine the user experience and interfaces for Molecule’s core applications across web and mobile, working within the Product team from concept to launch

• Own and expand Molecule’s Design System by building and maintaining a scalable, accessible component library that keeps every product consistent

• Deliver polished, pixel-perfect UI components that improve usability and clarity and stay aligned with our brand

• Write clear component documentation, UI specs, and usage guidelines so handoff from design to development runs smoothly

• Partner with Frontend Engineers through implementation to make sure what ships matches what was designed

• Apply WCAG standards and UX best practices to make our products inclusive and easy to use

• Build interactive prototypes, often with AI-powered tools, to explore ideas and test them with users quickly

• Iterate on designs based on user feedback, data, and evolving product needs

• Lead and facilitate design work, including setting up frameworks, running brainstorms, and presenting and defending design decisions to stakeholders

• Contribute to Molecule’s broader visual identity across product and communications, working with external design partners on brand assets where needed

WHO YOU ARE

• You have 7+ years of professional product or UI design experience, ideally on complex products

• You have built and scaled design systems and hybrid component libraries across teams, and your portfolio shows it, including component libraries and detailed UI documentation

• You’re a Figma expert with hands-on experience managing a design system in it

• You understand HTML, CSS, and front-end frameworks well enough to design for feasibility and speak engineering’s language

• You have a strong grasp of interaction design for both mobile and desktop

• You actively use AI tools and AI-enhanced workflows in your design process

• You’re ego-free and collaborative. You seek out feedback and critique and keep pushing your craft forward

• You’re self-sufficient. You own the design process end to end, manage feedback, and drive execution without micromanagement

• You communicate clearly and can explain the reasoning behind your work to designers, engineers, and leadership alike

NICE TO HAVE

• You’ve shipped AI or agent-based product experiences

• You build and test working prototypes yourself, picking the right tool for the question at hand

• Experience with design tokens and front-end design implementation

• Knowledge of user testing methodologies and iterative research practices

• Experience working with external design or branding agencies

• Background in web3, biotech, or decentralised science

WHY MOLECULE

• The chance to define the product experience of a category, building the interfaces through which researchers, patients, and communities fund and govern science

• Real ownership in a young, fast-growing team where your voice shapes both the product and the company

• A team that values substance over titles, speed over process, and people who’ve built their way up

• Competitive compensation

We are an equal opportunity employer. We are committed to equality and weaving a community that values diverse perspectives and experiences and are actively seeking a diverse pool of applicants. All employment decisions are made without regard to race, colour, national origin, ancestry, sex, gender, gender identity or expression, sexual orientation, age, genetic information, religion, disability, medical condition, pregnancy, marital status, family status, veteran status, or any other characteristic protected by law.