Mansen Lin
Design system & guidelines
Established and maintained a comprehensive design system and UI/UX guidelines, keeping multiple products consistent and scalable.
Principal UX Designer · AI-augmented design
I'm Mansen Lin, a Principal UX Designer with 15+ years turning complicated enterprise workflows into clear, usable software. I pair deep UX craft, from research and interaction design to design systems, with AI-assisted workflows that help me explore, test and ship better experiences faster.
15+years in design
6companies, including Chevron
5industries, from aviation to public safety
Since 2020in lead & principal UX roles
Where I've workedWorld FuelUniversal Weather & AviationPrimary ArmsChevronAffinitivCOBAN Technologies
Experience
Recent achievements
End-to-end eCommerce design
Led design of all eCommerce products for web and mobile, driving consistent growth in engagement and conversion.
Research that shaped decisions
Used user research, A/B testing (Hotjar) and usability studies to validate design decisions, and presented findings that steered design direction.
Design leadership
Mentored junior designers and front-end developers, and built training tools and a design process that designers, developers and product owners follow.
Career timeline
Principal UX DesignerCurrent
World FuelLead User Interface Designer
Universal Weather and Aviation, Inc.- Established and maintained a comprehensive design system and UI/UX guidelines, ensuring consistency and scalability across multiple products.
- Mentored junior designers and front-end developers, raising team design quality and workflow efficiency.
- Identified and resolved complex product pain points through research, usability testing and iterative design, creating more intuitive workflows and a better user experience.
- Created training tools and a design process so designers, developers and product owners all follow the guidelines.
- Helped build a culture of design thinking and collaboration across the design team.
Lead UI/UX Designer
Primary Arms, LLC / GIR Software Services- Led end-to-end design of all eCommerce digital products for web and mobile, driving consistent growth in user engagement and conversion.
- Redesigned key user flows and navigation, creating a smoother and more intuitive customer journey across all digital platforms.
- Built high-fidelity prototypes and interactive mockups so stakeholders could visualize, demo and test every use case before development.
- Worked closely with developers and marketing to align business goals with user-centered design.
- Used user research, A/B testing (Hotjar) and usability studies to validate design decisions and optimize for conversion and retention.
UI/UX Designer (contract)
Chevron- Worked with two Agile Release Train (ART) teams to design cross-functional UI that improved the user experience of their applications.
- Wrote user stories and gathered requirements from stakeholders and subject-matter experts.
UI Design Engineer
Car Research XRM / Affinitiv, Inc.- Designed high-fidelity mockups and interactive prototypes for desktop and mobile applications, turning business goals into intuitive, visually compelling experiences.
- Worked closely with developers and product teams to keep a unified design language and consistent functionality across the product suite.
- Ran and presented usability research and design solutions to the development team, influencing design direction and decision-making.
- Worked with QA and development to refine front-end implementation and deliver pixel-accurate results.
Senior Multimedia Specialist
COBAN Technologies- Worked with the software engineering team to design innovative UI solutions for law-enforcement applications used nationwide.
- Developed interactive marketing and sales tools, including a Flash-based product demo that significantly increased engagement and conversion efficiency.
- Directed the visual identity and user experience of the company website with clear messaging and cohesive branding.
AI process
How I design with AI
Practical, human-led and always tested with real users.
Research, accelerated
AI helps me synthesize interviews, usability notes and competitor research quickly, so more of my time goes to talking with users and validating what matters.
Explore wider, decide better
I generate and compare more concepts early, then narrow them with user evidence, design principles and the realities of the product.
Prototype in code
Working, accessible prototypes let stakeholders test real behavior sooner. This website was designed and built with that workflow.
Human judgment in charge
Every output is reviewed for usability, accessibility, accuracy and brand. AI speeds up the work; it never replaces user research or craft.
Capabilities
What I bring to a team
UX & research
- User research
- Usability testing
- A/B testing
- User flows
- Information architecture
- Requirements & user stories
UI & systems
- Interaction design
- Design systems
- Accessibility
- Prototyping
- Mobile & responsive
- Enterprise UI
AI-assisted design
- Research synthesis
- Rapid concept exploration
- Prototyping in code
- Prompt design
- Human-in-the-loop review
Tools & collaboration
- Figma
- Adobe Creative Cloud
- HTML / CSS
- Design handoff
- Agile teams
- Mentoring
Projects
Selected projects
Written case studies from earlier work. Visuals are coming later.
Fusion HD in-car video interface
A rugged, glanceable interface for an in-car police video system, designed for officers who need answers in seconds, not menus.
Trade-In-Valet appraisal kiosk & mobile app
Turning a stressful vehicle trade-in into a friendly, guided flow for dealership kiosks and phones nationwide.
Third Coast Terminals website redesign
A clean, modern web presence that explains a complex chemical-services business in plain terms.
COBAN Technologies website
A modern, rugged web identity for a leading provider of police in-car and body-worn video.
Command Center Express software UI
Making evidence-video review software as easy to navigate as a consumer video app.
Recent enterprise work is under NDA
My most recent work at World Fuel and Universal Weather & Aviation covers complex internal and customer-facing platforms. I'm happy to walk through it in a conversation.
About
Human-centered design, AI-accelerated.
I'm a Principal UX Designer who turns complicated enterprise workflows into software people can use without training. Over 15+ years I've designed for aviation, energy, e-commerce and public safety, from research and interaction design to design systems and developer hand-off.
Today I pair that foundation with AI-assisted workflows. I use AI as a design partner to synthesize research, explore more concepts and prototype in working code, while keeping judgment, taste and user evidence firmly human. This site was designed and built that way.
At Universal Weather and Aviation I established the design system and mentored designers and developers. At Primary Arms I led eCommerce design across web and mobile. I like working closely with engineers and stakeholders, and testing with real users before anything ships.
Connect
Let's build something people enjoy using.
Hiring for a UX leadership role, or have a product that needs untangling? Message me on LinkedIn.