Product Designer

Antai Ventures is a Barcelona-based venture studio with presence across Southern Europe and Latam. Since 2012, we have co-founded more than 28 companies, including Glovo, Wallapop, Nemuru, Platanomelón and Vitaance. Our ventures have raised over $1.5B in funding, generated more than $3B in shareholder value, and today employ more than 3,000 people.

We are looking for an AI-native Product Designer to join our Product & Tech team in Barcelona.

This is not a traditional design role. We want someone who is deeply product-minded, highly hands-on, and excited about designing in a world where AI changes how products are conceived, prototyped and shipped. You should be comfortable not only designing interfaces, but also using AI tools, agentic systems and AI-assisted building workflows to move faster, explore more ideas, and help bring products to life.

What you will do

• Design end-to-end product experiences, from discovery and flows to polished UI and detailed interactions.

• Turn complex user needs, business goals and data into simple, intuitive and high-quality product experiences.

• Own the user experience across the full product lifecycle: research, ideation, prototyping, testing and execution.

• Work closely with product managers, engineers, data scientists, growth, sales and marketing to define and ship new products and features.

• Create clear, implementation-ready designs that engineers can build from with speed and confidence.

• Build and evolve design systems, interaction patterns and reusable components.

• Prototype fast and often, using both traditional design tools and AI-powered tools to validate ideas early.

• Use AI workflows and agentic systems to improve how you research, generate concepts, test ideas and accelerate execution.

• Act as the voice of the user while balancing product ambition, technical feasibility and speed.

• Help the team explore new ways of working at the intersection of design, product and AI.

What we are looking for

• You have experience as a Product Designer, with a strong portfolio showing end-to-end product thinking across multiple projects.

• You are an excellent UX/UI designer, but also highly pragmatic and execution-oriented.

• You are AI-native in the way you work: you actively use AI tools to research, think, prototype, write, generate, iterate and ship faster.

• You are comfortable using or experimenting with agentic systems, AI copilots, automation workflows, and multi-step AI tools as part of your design process.

• You have built prototypes yourself, or used AI-assisted coding / low-code / no-code tools to bring ideas to life without always depending on engineering first.

• You enjoy prototyping and testing ideas quickly, and you are excited by the idea of turning concepts into working experiences in days, not weeks.

• You can go from ambiguity to clarity and are comfortable working in fast-moving, early-stage environments.

• You communicate clearly and can influence cross-functional teams with strong reasoning and product judgment.

• You are comfortable with research, user testing, analytics, experimentation, competitor analysis and defining product metrics.

• You have solid experience with Figma.

• You care deeply about product quality, user empathy and craft.

• You are fluent in Spanish and English.

Bonus points if

• You have worked on 0→1 products, startups, venture studios, or fast-paced product teams.

• You have built internal tools, growth experiments or MVPs yourself using AI-assisted workflows.

• You are genuinely excited about how AI is reshaping product design, product development and company building.

What we offer

• Full-time role based in Barcelona.

• The opportunity to work on ambitious products with top-tier founders and operators.

• A young, fast-moving and highly entrepreneurial environment.

• Exposure to multiple ventures and real product-building from day one.

• Strong growth opportunity within one of Europe’s leading venture studios.

• Beautiful seaside offices in front of La Barceloneta.