Ubirajara LUCENA
Senior Product Designer & UX Researcher

With a background in cognitive ergonomics and product design, I have been working in the field of user experience for over 20 years.

User‑centred design and human factors are the fundamentals of my work, and I am driven by the desire to improve people's lives by delivering qualitative experiences on the products and services they use.

One of the things that I particularly enjoy about my job is taking into account the specific constraints of a project and assisting the implementation of concrete solutions, from start to finish.

I have experience with all stages of the software development lifecycle: from preliminary UX research and task analysis to dynamic prototyping, usability testing, and front-end development.

More recently, I have been deeply involved in AI-based eHealth and HealthTech. My focus was on converting real user needs into logic and user experience workflows for AI assistants, ensuring that advanced technology served as an intuitive and efficient tool for healthcare professionals.

Download my CV (French, PDF)

Core Expertise

  • Cognitive Ergonomics

    Applying human factor principles (ISO 9241, Bastien & Scapin) to reduce mental workload in complex industrial and clinical environments.

  • AI & Prompt Engineering

    Designing conversational flows and system prompts for context-aware AI tools in healthcare and communication.

  • UX Research & Usability

    Extensive experience in contextual inquiries, user interviews, and usability testing, with thousands of hours dedicated to optimizing public and private digital services.

  • Web Accessibility

    Expert auditing and implementation of WCAG 2.1 / RGAA 4.1 standards to ensure inclusive design across all platforms.

  • Dynamic Prototyping

    Building high-fidelity interactive prototypes (Figma, Axure, Sketch), supported by a strong background in front-end development.

  • B2B System Design

    Architecting complex workflows for eHealth, warehouse management (SAP WMS), internal business tools, and insurance acquisition journeys.

Contact me