Available to hire
I’m Mariana Costa, a Senior UX/UI Designer with 5+ years delivering strategic, user-centered design solutions across responsive web and mobile platforms. I excel at aligning UX strategy with product vision and measurable KPIs like NPS, retention, and conversion.
I’m passionate about cross-platform product strategy, scalable design systems, and accessibility compliance (WCAG). I enjoy working with stakeholders, leading design initiatives, and enabling product-led decision-making within agile teams to deliver meaningful, measurable outcomes.
Language
Portuguese
Fluent
English
Advanced
Spanish; Castilian
Advanced
Work Experience
Senior UX/UI Designer & Product Designer at Noesis
October 1, 2022 - PresentLed UX/UI design for responsive web and mobile platforms, ensuring consistency, accessibility, and seamless multi-device user experiences across customer journeys. Designed and iterated wireframes, mockups, and interactive prototypes based on usability testing, stakeholder feedback, and accessibility guidelines. Developed and maintained scalable design systems integrated with agile roadmaps, reducing UI inconsistencies and improving delivery speed. Conducted UX research, heuristic evaluations, and competitor analysis to support data-driven design decisions and enhance user satisfaction. Facilitated agile ceremonies, sprint planning, and design critiques to align cross-functional teams and optimise design-to-dev handoff using Figma and Jira. Advocated for UX best practices, mentored junior designers, and contributed to design operations and process improvements across the team.
UX/UI & Product Designer at Match Pro filer
January 1, 2022 - October 1, 2022Produced visual design deliverables including UI kits, icon libraries, and responsive layouts while maintaining consistency across mobile and desktop breakpoints. Designed end-to-end user experiences across the full product lifecycle using lean UX methodologies in agile environments. Conducted user interviews, stakeholder workshops, and competitor research to guide information architecture, prioritise product features, and align design with business outcomes. Delivered dashboard UI improvements that increased user efficiency by 25%, contributing to roadmap progression and overall usability enhancement.
UX/UI Designer at Studium
March 1, 2021 - December 1, 2021Created wireframes and interactive prototypes to support usability goals and stakeholder reviews. Collaborated with front-end developers and product managers to implement UI components and improve design consistency based on user testing.
Junior UX/UI Designer at Causaefeito
August 1, 2020 - March 1, 2021Created wireframes, mockups, and visual assets for responsive interfaces across marketing and e-commerce platforms. Participated in agile sprint cycles and contributed to usability audits and UI refinements based on UX best practices.
Illustration & Graphic Design Freelancer at GRRR
November 1, 2021 - January 1, 2024Designed vector illustrations for educational apps. Delivered optimised assets for seamless digital integration.
Education
Interior Design at ESAD, Porto
January 1, 2014 - January 1, 2017Graphic Design at EASD, Valencia
January 1, 2016 - January 1, 2017UX Foundations at EDIT, Remote
January 1, 2020 - January 1, 2020Qualifications
UX & Web Design Master Course
January 1, 2024 - January 1, 2024Accessibility: How to Design for All
January 1, 2024 - January 1, 2024AI for Designers
January 1, 2024 - January 1, 2024WAI0.1x: Introduction to Web Accessibility
January 1, 2024 - January 1, 2024Product Design in AI
January 1, 2023 - January 1, 2023Service Design
January 1, 2023 - January 1, 2023Design for the 21st Century
January 1, 2022 - January 1, 2022UX/UI Design
January 1, 2021 - January 1, 2021HTML, CSS, Accessibility & Visual Design
January 1, 2020 - January 1, 2020Industry Experience
Software & Internet, Education, Professional Services, Media & Entertainment
Hire a UX Designer
We have the best ux designer experts on Twine. Hire a ux designer in Porto today.