Smadex is a leading advertising technology company founded in Barcelona in 2010 and acquired by US-based, publicly traded Entravision (NYSE: EVC) in 2018. We are one of the top mobile ad-tech companies in the world and the largest Demand Side Platform (DSP) based in Europe, with revenues over $100M and consistently growing year over year.

As a

Senior Product Designer within the

Product team, you will own the user experience strategy and design execution for user-facing initiatives in our product ecosystem. Working alongside the

Director of Creative Products

, Product Managers and Engineering, you will transform complex advertising technology into intuitive, elegant experiences that help advertisers create, optimise and measure high-performing creatives across Mobile and Connected TV.

This position is based in Barcelona (hybrid).

Role's tasks and responsibilities

- Own the user experience for one or more Products, from discovery and concept development through to detailed design and delivery.
- Partner closely with Product Managers and Engineering to shape product direction, influence roadmap decisions and ensure user needs are represented throughout the product development lifecycle.
- Design intuitive user journeys, workflows, interfaces and prototypes that simplify complex creative, AI and advertising technology into elegant product experiences.
- Contribute to and evolve the Smadex Design System, creating scalable interaction patterns and reusable components that improve consistency across the platform.
- Validate concepts through prototyping, user research, experimentation and product analytics, using data and feedback to continuously improve the user experience.
- Stay at the forefront of UX, AI-assisted design, design systems and emerging technologies, helping shape the future of Creative Products at Smadex.





Role's skills and requirements
- 5+ years' experience designing digital products for SaaS, B2B software or technology platforms.
- Strong portfolio demonstrating end-to-end product design, from user discovery through to shipped products.
- Expert proficiency in Figma, including prototyping, design systems and component libraries.
- Strong understanding of UX, interaction design, information architecture and user-centred design principles.
- Experience designing complex workflows, dashboards or data-rich applications.
- Comfortable collaborating closely with Product Managers and Engineers in an agile product environment.
- Excellent communication and presentation skills, with the ability to clearly explain design decisions and influence stakeholders.

Preferred
- Experience in programmatic advertising, AdTech or another complex technology platform.
- Experience designing AI-powered products, automation tools or workflow applications.
- Familiarity with HTML, CSS or front-end development principles.
- Experience building or contributing to scalable design systems.

What's in it for you?
- Join a highly motivated and talented team in a fun and friendly work environment.
- Competitive compensation package.
- Top location at the heart of Barcelona in a penthouse office with a rooftop terrace, barbecue and a fully stocked fridge.
- Work from home: 2 days/week, adaptable working hours.
- Private Health Insurance.
- Professional development with a LinkedIn Learning subscription and other training opportunities.
- Meal vouchers – Ticket Restaurant monthly allowance.
- Monthly gym allowance: Choose between DiR Gym and Wellhub.
- Monthly TGIF events and regular team-building initiatives.
- Fun and friendly work environment with talented marketers and engineers from over 40 countries.
- And more!

📌 Senior Product Designer (Barcelona)
🏢 Smadex
📍 Barcelona