Mihai is available for hire
Hire MihaiMihai Petrea
Verified Expert in Design
Designer
Bucharest, Romania
Toptal member since May 14, 2021
Bio
Mihai is a certified UX and UI designer with over eight years of experience. He's helped companies test, validate, and launch innovative ideas and products. Mihai approaches every project as an entrepreneur, marketer, and creative—creating products that are easy to use and scale. He will challenge your ideas and try to brainstorm new ideas so you can improve your product. Mihai is a proactive problem solver with a constant positive attitude, making it easy and pleasant to work with him.
Portfolio
Work Experience
UI and UX Designer
2013 - PRESENT
Freelance Clients
- Designed mobile and web apps for different industries, such as banking, healthcare, and fintech.
- Held brainstorming and ideation workshops with stakeholders to ideate and generate new ideas.
- Created user flows, customer journey maps, and wireframes for different apps.
- Ran usability testing and user interviews to test designs.
- Created pixel-perfect UI designs based on wireframes.
- Supported the engineers in design implementations.
- Created A/B test different layouts and measured various metrics for better results.
Technologies: Figma, User Research, UX Design, UI Design, SaaS Design, iOS App Design, Mobile Design, Mobile UI, Mobile UX, Design Systems, User Experience (UX), Interface Design, Competitive Analysis, Prototyping, Dashboards, Data Visualization, UX Research, Product Design, Mobile UX Design, Mobile UI Design, Visual Design, iOS UI Design, Web UI, Web UI Design, Mobile App Design, Responsive UI, User Personas, Human-centered Design (HCD), User Stories, Design Leadership, Accessibility, User Flows, Annotated Wireframes, Wireframing, Rapid Prototyping, Finance, Low-fidelity Prototypes, Responsive Web Apps, Management, Web Application Design, App Design, MVP Design, Product Strategy, Style Guides, Mockups, UX Wireframes, Customer Journeys, Graphic Design, Web Design, Web App UI, Responsive Web Design (RWD), Layout, Mobile App UI, Mobile Apps, Responsive Design, Web Portals, Design Strategy, Design Guidelines, Validated User Research, Accessible Design, Web App UX, Web App Design, UI Animation, Desktop App Design, UX Prototyping, Interactive Design, Wireframe.cc, Usability Heuristics, User Interface (UI), CRM Design, B2C, B2B, SaaS, Web Platforms, Component Libraries, Technical Writing, UX Writing, AI Design, App UX, App UI
UX/UI Designer
2023 - 2023
Lineup, LLC
- Produced mood boards and presented diverse design styles, tailoring visual elements to reflect the brand identity of the company while maintaining a user-friendly and intuitive design for restaurant order tracking.
- Established a comprehensive design system for the dashboard, accommodating both light and dark modes to provide users with a customizable and accessible interface, resulting in a 20% increase in user engagement.
- Implemented a transparent communication strategy by providing daily and weekly updates to the project team, ensuring continuous alignment on project goals, addressing challenges promptly, and fostering a collaborative working environment.
- Worked closely with front-end engineers to develop a library of reusable components for the dashboard, optimizing development efficiency and ensuring a consistent and cohesive user experience.
- Actively gathered feedback from restaurant owners, managers, and delivery personnel to refine and improve the dashboard's usability and functionality, resulting in a 15% reduction in order processing times.
- Designed and executed A/B tests on key features of the dashboard, leveraging data-driven insights to refine the user interface and enhance overall user satisfaction, contributing to a 10% increase in user retention rates.
Technologies: Web App Design, Web App UX, Web App UI, Design Systems, Mobile App UI, Mobile App Design, Restaurants & Dining, AI Design, App UX, App UI
Senior UX/UI Designer
2023 - 2023
Quantum Trade Solutions GmbH
- Facilitated discovery workshops with clients to elicit project requirements, aligning stakeholder expectations and ensuring a user-centric approach to design.
- Crafted comprehensive mood boards and presented diverse design styles to stakeholders, fostering collaborative decision-making and aligning the team on the visual direction of the product.
- Developed an extensive design system encompassing both light and dark modes, enhancing consistency and scalability across the application, resulting in a 20% reduction in design-related development time.
- Implemented transparent communication by providing daily and weekly updates to the team, ensuring everyone was informed about project milestones, challenges, and progress, contributing to a 15% increase in project transparency and collaboration.
- Collaborated closely with front-end engineers to establish a library of reusable components, optimizing development efficiency and maintaining design consistency throughout the product.
- Initiated and executed A/B tests to validate design hypotheses, resulting in a 15% improvement in key user interactions and guiding design decisions based on statistically significant data.
Technologies: Web App Design, Angular, Web App UX, Web App UI, Trading, Product Design, AI Design, App UX, App UI
Product Designer
2020 - 2022
Squire Technologies
- Built and maintained a design system used across the organization.
- Increased customer engagement through the design and testing of new features.
- Contributed to mobile and web apps and responsive websites.
- Conducted remote user testing to gather feedback and improve product design.
- Keeping up to date with synchronous and asynchronous updates in a remote product design role.
Technologies: Figma, A/B Testing, User Testing, Zoom, Jira, Remote Work, Product Design, UX Design, UI Design, Mobile UX Design, Mobile UI Design, Adobe Photoshop, Digital Product Design, Mobile UI, Mobile UX, Web App Design, Mobile Prototypes, User Personas, Human-centered Design (HCD), User Stories, Accessibility, User Experience (UX), User Flows, Annotated Wireframes, Wireframing, Rapid Prototyping, Finance, Low-fidelity Prototypes, Responsive Web Apps, Management, Web Application Design, App Design, MVP Design, Product Strategy, Style Guides, Mockups, UX Wireframes, Customer Journeys, Graphic Design, Web Design, Web App UI, Responsive Web Design (RWD), Layout, Mobile App UI, Visual Design, Mobile Design, Mobile Apps, Responsive Design, Web Portals, Design Strategy, Design Guidelines, Dashboards, Validated User Research, Accessible Design, Web App UX, UI Animation, Desktop App Design, Web UI, UX Prototyping, Interactive Design, Wireframe.cc, Usability Heuristics, User Interface (UI), Responsive UI, CRM Design, Design Systems, B2C, Fintech, B2B, SaaS, Web Platforms, Component Libraries, Technical Writing, UX Writing, App UX, App UI
UI and UX Consultant
2018 - 2021
Tremend
- Managed the user experience, including use cases, flow diagrams, competitive/comparative analysis, wireframes, visual design, and testing for different clients.
- Led a team of four UX and UI designers by coaching them and giving constant feedback to improve their knowledge.
- Worked closely with the engineering team to make sure that everything could be implemented and that it was implemented right.
- Built wireframes and created interactive prototypes for websites and mobile applications.
- Designed pixel-perfect interfaces for mobile and web apps for different clients.
- Created, maintained, and improved a comprehensive design system that was used across multiple products.
- Helped the agency improve its sales by encouraging the clients to request additional design services.
Technologies: Figma, Sketch, Adobe Experience Design (XD), Enterprise SaaS, Enterprise Design, Agency, Digital Product Design, Ideation, User Research, Product Design, User Experience (UX), Interface Design, Competitive Analysis, Prototyping, Information Architecture (IA), Dashboards, Data Visualization, UX Research, UX Design, UI Design, Mobile UX Design, Mobile UI Design, User Personas, Human-centered Design (HCD), User Stories, Design Leadership, Accessibility, User Flows, Annotated Wireframes, Wireframing, Rapid Prototyping, Finance, Low-fidelity Prototypes, Responsive Web Apps, Management, Web Application Design, App Design, MVP Design, Product Strategy, Style Guides, Mockups, UX Wireframes, Customer Journeys, Graphic Design, Web Design, Web App UI, Responsive Web Design (RWD), Layout, Mobile App UI, Visual Design, Mobile Design, Mobile Apps, Responsive Design, Web Portals, Design Strategy, Design Guidelines, Validated User Research, Accessible Design, Mobile UI, Web App UX, Web App Design, UI Animation, Desktop App Design, Web UI, UX Prototyping, Interactive Design, Wireframe.cc, Usability Heuristics, User Interface (UI), Responsive UI, CRM Design, Design Systems, B2C, Fintech, B2B, SaaS, Web Platforms, Component Libraries, Technical Writing, UX Writing, App UX, App UI
Product Designer
2017 - 2018
Medicover
- Conducted continuous user interviews and research to understand user needs.
- Ran usability sessions with the end-users to observe different problems in the flow.
- Created different design layouts and tested them with the users before implementing them.
- Constructed a design system to be in sync with the developers.
- Worked closely with business analysts to find out new opportunities.
Technologies: Adobe Experience Design (XD), User Testing, Usability Testing, A/B Testing, User Interviews, User Flows, User Research, User Interface (UI), Competitive Analysis, Prototyping, Information Architecture (IA), Dashboards, Data Visualization, User Personas, Human-centered Design (HCD), User Stories, Accessibility, User Experience (UX), Product Design, UX Design, Annotated Wireframes, Wireframing, Rapid Prototyping, Low-fidelity Prototypes, Responsive Web Apps, Management, Web Application Design, App Design, MVP Design, Product Strategy, Style Guides, Mockups, UX Wireframes, Customer Journeys, Graphic Design, Web Design, Web App UI, Responsive Web Design (RWD), Layout, Mobile App UI, Visual Design, Mobile Design, Mobile Apps, Responsive Design, Web Portals, Design Strategy, Design Guidelines, Validated User Research, Accessible Design, Mobile UI, Web App UX, Web App Design, UI Animation, Desktop App Design, Web UI, UX Prototyping, Interactive Design, Wireframe.cc, Usability Heuristics, Responsive UI, CRM Design, Design Systems, B2C, B2B, SaaS, Web Platforms, Component Libraries, Technical Writing, UX Writing, App UX, App UI
UX Designer
2016 - 2017
SolarWinds
- Designed the UI of an anti-spam enterprise product used by DevOps.
- Worked closely with the engineering and marketing teams to help to grow the product.
- Helped construct a visual system for the look and feel of the app.
- Ran remote user interviews to understand the user behavior.
- Analyzed the data from Google Analytics and Hotjar to improve the flows.
Technologies: Photoshop CC, Adobe Experience Design (XD), HTML, CSS, Bootstrap, Hotjar, Google Analytics, User Experience (UX), Competitive Analysis, Prototyping, Information Architecture (IA), Dashboards, Product Design, UX Design, Annotated Wireframes, Wireframing, Rapid Prototyping, Low-fidelity Prototypes, Responsive Web Apps, Web Application Design, App Design, MVP Design, Product Strategy, Style Guides, Mockups, UX Wireframes, Customer Journeys, Graphic Design, Web Design, Web App UI, Responsive Web Design (RWD), Layout, Mobile App UI, Visual Design, Mobile Design, Responsive Design, Web Portals, Design Strategy, Design Guidelines, Validated User Research, Accessible Design, Web App UX, Web App Design, UI Animation, Desktop App Design, Web UI, UX Prototyping, Interactive Design, Wireframe.cc, Usability Heuristics, User Interface (UI), Responsive UI, CRM Design, Design Systems, B2C, B2B, SaaS, Web Platforms, Component Libraries, Technical Writing, App UI
UI and UX Designer
2015 - 2017
Top Universities
- Worked with a team of multidisciplinary designers where I was in charge of the UX and UI work.
- Designed responsive layouts of the website for desktop, mobile, and tablet.
- Created and maintained a design system focused on reusable components.
- Ran A/B tests for layouts to see which one performs better.
- Held in-person user interviews with the target users.
Technologies: InVision, Sketch, Photoshop CC, Analysis, Google Analytics, A/B Testing, Hotjar, User Experience (UX), Interface Design, Prototyping, UX Design, Wireframing, Responsive Web Apps, Web Application Design, App Design, MVP Design, Product Strategy, Style Guides, Mockups, UX Wireframes, Customer Journeys, Graphic Design, Web Design, Web App UI, Responsive Web Design (RWD), Layout, Mobile App UI, Visual Design, Mobile Design, Responsive Design, Web Portals, Design Strategy, Design Guidelines, Validated User Research, Accessible Design, UI Animation, Desktop App Design, UX Prototyping, Interactive Design, Wireframe.cc, Usability Heuristics, User Interface (UI), Responsive UI, CRM Design, Design Systems, B2C, B2B, SaaS, Web Platforms, App UX, App UI
Skills
Tools
Adobe Experience Design (XD), Trello, Slack, Wireframe.cc, Photoshop CC, Jira, Sketch, Hotjar, Google Analytics, InVision, Zoom, Adobe Photoshop
Platforms
Figma, Web, WordPress
Languages
HTML, CSS, Swift
Industry Expertise
Health, Healthcare, Fine Arts, Food, Food & Beverage, Fashion, Fashion & Beauty, Restaurants & Dining
Other
UX Design, UI Design, Interface Design, User Experience (UX), User Interface (UI), iOS App Design, SaaS Design, Product Design, User Flows, User Research, Dashboard Design, Design Systems, Mobile Design, Mobile UI, Mobile UX, User Interviews, Responsive UI, Web Design, Web App UX, Web App UI, Web App Design, User Personas, Wireframing, Mobile Apps, Mobile App UI, Web UI, Web UX, Mobile UX Design, Prototyping, Dashboards, Data Visualization, Mobile UI Design, Mobile App Design, Visual Design, Human-centered Design (HCD), User Stories, Rapid Prototyping, Low-fidelity Prototypes, Responsive Web Apps, Web Application Design, App Design, MVP Design, Product Strategy, Style Guides, Mockups, UX Wireframes, Customer Journeys, Graphic Design, Responsive Web Design (RWD), Layout, Responsive Design, Web Portals, Design Strategy, Design Guidelines, Validated User Research, Accessible Design, UI Animation, Desktop App Design, UX Prototyping, Interactive Design, Usability Heuristics, CRM Design, B2C, Fintech, B2B, SaaS, Web Platforms, Component Libraries, Technical Writing, UX Writing, App UX, App UI, User Testing, User Journeys, Competitive Analysis, Information Architecture (IA), UX Research, Design Leadership, Accessibility, Finance, Management, AI Design, Enterprise SaaS, Enterprise Design, Agency, Digital Product Design, Ideation, Usability Testing, A/B Testing, Bootstrap, Analysis, eCommerce, Research, Shops, Annotated Wireframes, UI Components, Medical Applications, Web Forms, User Journey Maps, Foodtech, Food Ordering, Food Delivery Services, Native Mobile Apps, iOS UI Design, iOS UX Design, Web Dashboards, QA Testing, Analytical Dashboards, Theater & Performing Arts, Android UI Design, Android App Design, Angular, AngularUI, React Native, Online Ordering, Food Ordering Platforms, CreativeJS, Creative Design, Patterns, UI Patterns, Shopping, Online Shopping, Testing, Software QA, Website QA, Art, Artistic Skill, Artist Management, Learning, Teaching, Android Design Guidelines, Remote Work, Web UI Design, Mobile Prototypes, Trading
Experience
- User Experience (UX) - 8 years
- iOS App Design - 8 years
- Product Design - 8 years
- User Interface (UI) - 8 years
- User Flows - 7 years
- Dashboard Design - 7 years
- SaaS Design - 7 years
- Design Systems - 6 years
Collaboration That Works
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