Resume

Lewis Ngugi

Senior product designer · London

Senior product designer with 10 years designing B2B SaaS workflows and AI tools across legal and enterprise platforms. I work hands-on from research through interaction design and handoff, build design systems, and prototype in code with Claude and Cursor.

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Experience

Senior Product Designer

Mar 2026 – Present

Jigsaw · London

Lead designer and first dedicated designer for Timelines, Jigsaw’s litigation chronology tool. Designed an audit-led delivery model that removed design as the launch bottleneck, rebuilt the research practice, and mentor three product designers. Won the company-wide Superstar Award, the first product designer to receive it.

Timelines Case study coming soon

Led the rebuild of Timelines for litigation chronologies, establishing delivery standards for the team. At ILTACON 2026, helped drive leads with the AI coming to Timelines to make timelines more beautiful. Designed a data component that another team adopted to ship a new mode.

Senior Product Designer

Oct 2022 – Nov 2025

HubSpot · London

Led design for AI-powered support tools. Designed experiments that delivered a +8pp activation uplift and set up a UMUX-lite measurement framework adopted by 5+ teams. Shared the HEART Award, the first product designer to win it.

AI support Password protected

Designed the AI Email Assistant and a live-chat queue: a 59% digital resolution rate, a 79% email handling rate and the first-ever PQL revenue from AI-powered support tools.

Senior Product Designer

Dec 2020 – Sep 2022

Lookback · Remote

Designed research tools across desktop and mobile with Product, Engineering and Research, keeping research workflows consistent and aligned with the design system. Promoted from Product Designer in April 2022.

Mobile Tasks

Led end-to-end design for unmoderated, step-by-step research on iOS and Android. Trial teams ran 45% more Tasks rounds after launch.

Lookfox

Designed a native macOS menu bar app in six weeks that turns a spontaneous insight into a research clip in about fifteen seconds.

Product Designer

May 2019 – Dec 2020

Kwara · Nairobi

Led end-to-end design for a B2B SaaS digital banking platform serving community banks and credit unions, and extended the first design system across all of Kwara’s digital properties.

Kwara for SACCOs

As an early team member, designed foundational features, including a reimagined teller web experience for credit unions.

User Experience Specialist, Innovation Lab

Jan 2018 – Mar 2019

Safaricom · Nairobi

Iterated on Bonga and other products with engineers and product managers, developed internal UX processes, and shaped key business decisions through design sprints as facilitator and designer.

Bonga Case study coming soon

A chat app with M-Pesa built in, so people could send, request and receive money without leaving the conversation.

Earlier experience

  • Senior Product Designer (contract), LiberateJan 2022 – Aug 2022
  • Project Evaluator, UI/UX Design, SpringboardAug 2021 – Apr 2022
  • Design Mentor and UX Facilitator, COOPEN programme, MettāMay 2021 – Jun 2022
  • User Experience Designer, Capital FM KenyaDec 2016 – Jul 2017
  • Creative Designer, ARK Africa (website redesign)Apr 2016 – Oct 2016
  • UX Designer, Riverbank SolutionsSep 2015 – Mar 2016

Education

Understanding Artificial Intelligence

2026

DataCamp

Masters in Business Design (professional certification)

2019

d.MBA

Human Centred Service Design (professional certification)

2019

IDEO U

BSc Information Technology

Jan 2012 – Sep 2015

Jomo Kenyatta University of Agriculture and Technology

Skills

B2B SaaS and enterprise UX, AI product design, interaction and visual design, design systems, user research and usability testing (UMUX-lite, SEQ, task success), experiments and A/B testing, product analytics (Amplitude, Looker), accessibility, Figma, prototyping in code with Claude and Cursor.

Volunteer

Design mentor on ADPList, mentor at General Assembly, professional mentor at KamiLimu and UX mentor at Akiliplus.