Jake Lewis
Product designer, UI/UX

Jake Lewis

UI/UX Designer with 7+ years of experience designing intuitive interfaces, scaling design systems, testing with real users, and balancing business goals with usability.

AI-forward product designer based in Orange County, CA

Case studies

Research, design decisions and results from three products.

Pens.com shopping cart and category pages on two phones, beside the Pens.com logo

Pens.com

Redesigning the product customizer on a major e-commerce site, lifting conversion 9%.

Read the case study
Dash challenge app screens next to the Dash logo

Dash

Building a workout app for fitness influencers.

Read the case study
CoStar profile and followers screens on a pink background

CoStar

Concept for a karaoke app.

Read the case study

Explorations

Interface studies and concepts. Select a screen to see it larger.

Resume

Product and UX roles since 2018, most recent first.

Nov 2025 – Present

Senior UI/UX Designer

QuinStreet, full-time contract

  • Lead AI-driven process and workflow improvements that reduce manual effort across the design team
  • Design responsive interfaces for websites and marketing platforms, with engagement and conversion as the goal
  • Build and maintain a scalable component library and design system in Figma that supports developer handoff
  • Partner with developers, marketers and business stakeholders, using analytics, user testing and A/B results to refine designs
Dec 2023 – Jul 2025

Lead Product Designer

National Pen

  • Partnered with the Director of UX to revamp the e-commerce experience, increasing user satisfaction and aligning design with business KPIs
  • Championed a customer-first approach, connecting qualitative insights to measurable outcomes
  • Expanded user testing capabilities by launching unmoderated studies, identifying friction points and boosting task success rates
  • Mentored a cross-functional team of designers, raising team UX maturity and design consistency
Sep 2021 – Dec 2023

Sr. UX Designer

National Pen

  • Redesigned end-to-end web experience for a global e-commerce site serving 10K+ daily users, enhancing usability and speed
  • Led research and prototyping for a personalized product customization tool, increasing conversions by 9% and cutting cancellations
  • Facilitated weekly cross-functional syncs to identify, prioritize, and resolve UX bottlenecks in the purchase flow
Sep 2020 – Sep 2021

UX Designer

National Pen

  • Built and managed design system, including an extensive component library for multiple designers to utilize
  • Standardized design practices across multiple departments, introducing an 8px grid system and design guidelines for our desktop and mobile experiences
  • Established a clear line of communication between developers and designers to streamline production
Jun 2018 – Jun 2019

UX/UI Designer

Knife and Fox

  • Directly collaborated with CEO and Product team to prototype, design and deliver the UI and UX experience with a lean design process: research, design, test, and iterate

Contact

Send a note about a role or a project. I reply by email.

Email
lewisrjacob@gmail.com
Phone
(949) 632-1643