Location: Madrid or Barcelona (Hybrid)

Type of contract: Full time

We’re seeking a creative, data-savvy, and hands-on Senior Product Designer to elevate our app on Android and iOS.

AI is commoditizing; the differentiator is product—design the most effortless assistant experience on Android and iOS.

🤖 About us 

Luzia is Europe’s fastest-growing AI consumer company, redefining conversational AI with cutting-edge large language models and an unparalleled user experience. With a strong and rapidly expanding presence in Brazil, we’re on a mission to make Luzia the go-to AI personal assistant, empowering millions of users to simplify and enhance their everyday lives.

⚡ Hypergrowth startup with 80M+ users worldwide in under 3 years.

 🌎Latin America as a core market with more than 60% of our user base.

 🚀Backed by top-tier investors (Khosla Ventures, Prosus Ventures, A-Star, Monashees  and more) .

• You’re obsessed with AI that reliably helps people in everyday moments.

• You turn radical simplicity and visual beauty into product advantages for novice users.

•  You design mobile first experiences for deskless users who live on screens?

• AI-Driven Design: Translate LLMs and context-aware signals into reliable, task-oriented product interactions. This is a greenfield opportunity, everything is to grab.

• Hands-on Design: Own end-to-end mobile product design (Android & iOS) from discovery to pixel-perfect handoff.

• UI & Interaction: Deliver simple, beautiful interfaces and interaction patterns for novice and low-literacy users.

• Deskless Flows: Design mobile-first, offline-tolerant flows optimized for phone and WhatsApp usage.

• Research & Measurement: Run mixed-methods research and use analytics to validate hypotheses and inform iterations.

• Rapid Prototyping: Build interactive prototypes to surface assumptions, get feedback, and de-risk ideas.

• Cross-functional Partnering: Work closely with PMs, engineers and ops to ensure feasible, privacy-aware designs that ship

• Fluent in English; Spanish or Portuguese a plus.

• A  strong portfolio showcasing mobile (Android/iOS) app work and measurable impact.

• Native mobile experience: proven delivery for Android and iOS, mobile-first and deskless user flows (WhatsApp/low-connectivity).

• AI product experience: familiarity designing with LLMs, NLP, or context-aware systems and turning capabilities into safe, usable interactions.

• Design tools & systems: expert in Figma and design systems; experience creating and maintaining component libraries.

• Analytics & research: comfortable with Amplitude/Mixpanel and mixed-methods research to validate decisions.

• Collaboration & communication: excels in cross-functional teams, communicates design clearly, and incorporates stakeholder feedback.

• Product mindset: strong analytical problem-solving, balances user needs, business goals, and technical constraints in fast-moving environments.

• Get Sh*t Done – We move fast, iterate faster, and deliver impact.

• Keep it Simple – No over complications, just clear and effective execution.

• Embrace the Pain – Growth happens outside of the comfort zone.

• Food/ Meal Card (Vale-Refeição and/or Vale Alimentação)

• Public Transportation Commuting Benefit (Vale-Transporte)

• Medical Plan

• Chance of earning equity from day 1 

If you’re ready to build the AI-powered future and make an impact at scale, apply now!