Mary Njoroge

S

Senior Product Designer at Hartwell Solutions | ex-Amazon

Hartwell Solutions
Nairobi, Kenya · EAT (UTC+3)
9+ years experience
Strathmore University
English, Swahili, Mandarin
Collaborating
Messaging unavailable

Overview

10 years in product design, the last 3 at Hartwell Solutions, where I work on the research team. Built a component library 58 engineers ship with every day. Before that: Amazon and Equity Bank. Most at home with jobs to be done and interviews. I play football every Sunday.

Good reasons to reach out
  • Collaborators for my side project
  • Thoughtful intros to people in my field
  • Questions about user research
  • Second opinions on usability testing decisions
Please don't message about
  • Crypto token projects
  • SEO and link-building offers
  • Unpaid design tests

Prefers short, specific messages

Skills
jobs to be doneusability testinginterviewssynthesis
CollaboratingLooking to collaborate
closes in 3 months

Side project in payments: need a data person to build with

Project
Payments: need a data person to build with
Skills needed
jobs to be done, synthesis
Time commitment
Weekends
Outcome
Small product with real users

No money involved, just a good project. Based in Nairobi, happy to work remotely.

Nairobi, Kenya · remote OKusability testingsynthesisjobs to be done
Open

Experience

  1. Senior Product Designer
    May 2023 - Present
    Hartwell Solutions · 3 yr 5 mo · Full-time · Nairobi, Kenya
    • Cut support tickets about research by 20% with clearer copy and states.
    • Ran 127 usability sessions and turned them into a research repository.
  2. Product Designer
    Nov 2021 - May 2023
    Amazon · 1 yr 6 mo · Full-time · Nairobi, Kenya
    • Built a component library 43 engineers ship with every day.
  3. UX Researcher
    Jul 2020 - Nov 2021
    Equity Bank · 1 yr 4 mo · Full-time · Nairobi, Kenya
    • Shipped the research redesign that lifted task completion 15%.
  4. Product Designer
    Apr 2019 - Jul 2020
    FirstRand · 1 yr 3 mo · Full-time · Nairobi, Kenya
    • Shipped the research redesign that lifted task completion 21%.
  5. Product Designer
    Jan 2018 - Apr 2019
    Interswitch · 1 yr 3 mo · Full-time · Nairobi, Kenya
    • Ran 47 usability sessions and turned them into a research repository.
    • Brought the research flows to WCAG 2.2 AA.

Projects

User research benchmark
2026

Reproducible benchmarks comparing interviews and synthesis on real workloads.

Conference talk: lessons from research
2024

What went wrong and what worked while scaling user research.

References

No references yet.

Education

  1. Strathmore University
    BCom, Interaction Design
    2012 - 2016

Details

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