Senior UI/UX Designer

COMMIT · AM, BR

The company is seeking a results\-driven **UX Designer** to own the end\-to\-end user experience of our AI\-powered video intelligence platform. This role sits at the intersection of Product, Engineering, and AI. You will translate complex computer vision capabilities into intuitive, high\-performance workflows used by security operators and enterprise teams worldwide. This is not a surface\-level UI role. You will shape product strategy, define interaction models, build scalable design systems, and ensure that advanced AI capabilities feel simple, usable, and powerful. **Responsibilities** * **Own the full UX lifecycle** — from discovery and concept development through wireframes, high\-fidelity designs, prototyping, and engineering handoff across web and mobile platforms * **Design intuitive, user\-centered experiences** that simplify complex AI\-driven security workflows and enterprise systems * **Define information architecture** for data\-rich, analytics\-heavy products to ensure clarity, scalability, and performance * **Lead structured user research initiatives**, including field studies, stakeholder interviews, usability testing, and behavioral analysis * **Validate concepts through rapid prototyping**, usability testing, and iterative experimentation * **Build and evolve Lumana’s cross\-platform design system**, ensuring consistency, scalability, and engineering alignment * **Leverage UX analytics and product data** to drive continuous improvements in usability, adoption, and workflow efficiency * **Collaborate cross\-functionally** with Engineering, Product, and Leadership to ensure design quality and scalable implementation * **Align UX strategy with product roadmap priorities**, contributing to long\-term platform vision * **Present and defend design decisions** using research, data, and principled thinking * Other duties may be assigned Requirements: * Bachelor’s degree in Design, Human\-Computer Interaction, Engineering, or a related field * 3\+ years of experience in UX/UI design for complex B2B, enterprise, or data\-heavy platforms * Strong portfolio demonstrating end\-to\-end UX work across research, interaction design, and high\-fidelity execution * Proven experience designing complex systems, dashboards, or analytics\-driven applications * Advanced proficiency in Figma and modern design systems * Experience leading user research initiatives and translating insights into shipped product improvements * Strong communication skills, with the ability to clearly articulate design decisions to technical and non\-technical stakeholders