Product DesignerAI-Augmented Design Workflow
I bridge Design & Engineering — building hi-fi prototypes with code, AI agents, and real workflows.
Selected Work
Palm-based payment and identity - wave your hand to pay and access
Aztec Node Explorer
Real-time Aztec node network explorer — global distribution, client versions, and network health at a glance.
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Restaking.Info
DeFi restaking analytics and portfolio management dashboard.
View on Behance →
QUADRATO
NFT protocol democratising fractional ownership standards on Solana.
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DeFi structured vault platform — deposit, mint, stake, earn.
View Case Study →Dissect
NFT fractional lending platform — landing page & full design system.
View Case Study →WAARM
Carbon management platform for enterprise sustainability goals.
View on Behance →
My Process
Discover
Audit, Research & BenchmarkingI start by deconstructing the landscape. For redesigns, I perform a Heuristic Audit to pinpoint where the current UI fails. For new products, I use AI-assisted synthesis to cluster user insights and competitive patterns. I don't just collect screenshots; I interpret them to find the "why" before I touch a canvas.
Define
Problem Framing & Strategic FlowsI translate raw research into a design strategy. This phase is about Information Architecture and high-level user flows. I define the constraints and the "Job to be Done," ensuring that the visual work that follows is anchored in a clear solution for a specific user pain point.
Design
Lo-fi → Logic Validation → Hi-fiI begin with wireframes to nail the hierarchy and layout. Before moving to high-fidelity, I perform Logic Validation — stress-testing the "unhappy paths," edge cases, and complex state changes. Once the logic is bulletproof, I apply the visual layer, focusing on typography, spacing, and brand expression.
Validate
Prototyping & User TestingI build interactive prototypes to put my assumptions to the test. Through task-based usability sessions, I observe how real users interact with the interface. This isn't just about finding bugs; it's about refining the friction points and iterating on the UI until the experience feels intuitive.
Deliver
Handoff & Implementation SupportDesign doesn't end at the Figma file. I provide developers with organised Design Tokens, documented component states, and accessibility specs. I stay involved during the build for Design QA, ensuring that the final coded product matches the intended craft and quality of the design.
About
Product Designer and Engineer with 4+ years of experience in Web3, DeFi, and fintech. I bridge the gap between design and development — taking products from user research and wireframes all the way to hi-fi prototypes, design systems, and production-ready code. Currently at Nethermind, leading design on Web3 and Layer 2 Ethereum products. Previously at NATEEVO, designing for brands like ImaginBank, Samsung, and SEAT. I work with an AI-augmented pipeline — Claude Code, MCP, and AI agents are part of how I design and build every day.
Experience & Education
Nethermind · Full-time · Remote
Product Designer
Web3 & Layer 2 Ethereum. End-to-end design from discovery to developer handoff.
NATEEVO · Full-time · Barcelona, Hybrid
UX/UI Designer
Product features, redesigns, wireframes and prototypes.
Dissect · Remote
Product Designer Co-op
Built the full design system for Dissect — a Web3/DeFi platform.
OPOS · Remote
Product Designer Co-op
Designed OPOS — a Solana blockchain fundamental analysis dashboard.
Widitrade · Madrid
Lead Graphic Designer
Visual design and brand identity for a fintech e-commerce platform.
Ironhack
UX/UI Design Bootcamp
User research, prototyping, interaction design, and product thinking.
ISDI
Visual Communication & Integral Design
Visual design, typography, brand identity, and communication systems.
What colleagues say
Carlos lead the design for our incubated startup at Nethermind. Carlos has a great eye, incredible attention to detail and threw himself into the work. He was also rapidly becoming AI native in his workflow, pushing new techniques to accelerate his design process. He was ready to throw himself into the code side the moment he could, keen to close the gap between design and implementation. He was never afraid to push back and improve the product spec. Always positive energy and can do — the team loved working with him. If we'd had the budget we'd have kept him with us.
Carlos was a pleasure to work with at Nethermind. He hit the ground running and demonstrated strong critical thinking and attention to detail from the outset, delivering a number of well-received projects for a variety of stakeholders. His curious and proactive approach made him incredibly easy and enjoyable to work with — always rising to the occasion and never afraid of a challenge. Carlos is a passionate product designer, and I believe that passion clearly shows in the quality of his work, making him a valuable asset to any team.
Working with Carlos has shown me what great product design actually means beyond visuals. He has a strong understanding of UX/UI, but what stands out the most is his approach to design thinking. Before focusing on aesthetics, he makes sure the product is truly usable, intuitive, and aligned with user needs. Carlos is very thoughtful throughout the entire process — he consistently prioritizes creating experiences that genuinely make people's lives easier, paying close attention to research, usability, feedback, and product alignment from start to finish. One of his strongest qualities is ownership. He is proactive in gathering feedback from stakeholders, collaborating across teams, and making sure there are no loose ends in the product experience. That combination of curiosity, responsibility, research mindset, and user-centered thinking is what makes Carlos an exceptional product designer.
Contact
Let's build
something together
Open to new opportunities — freelance projects, full-time roles, or just a good conversation about design.
carlosmera.design@gmail.com