Miriam Osei-Bonsu

Profile

Senior UX Designer with 8 years of experience shipping consumer and enterprise products across fintech and health-tech verticals. Specializes in end-to-end research, interaction design, and design systems that reduce friction and drive measurable retention. Led redesigns that cut task-completion time by 34% and contributed to a 19-point NPS lift across two product lines.

Work Experience

Senior UX DesignerMar 2021 - Present

Vantage Financial Technologies, Austin, TX

Redesigned the loan-application flow for 1.2M monthly active users, reducing drop-off by 41% and cutting average completion time from 14 to 8 minutes.
Built and maintained a Figma component library of 220+ reusable tokens and patterns, shrinking designer-to-developer handoff time by 30% across 6 product squads.
Facilitated 48 moderated usability sessions per year and translated findings into a prioritized insight backlog that directly informed 3 quarterly roadmap cycles.

UX DesignerJun 2018 - Feb 2021

Luminate Health, Denver, CO

Owned UX for a patient-scheduling module used by 340 clinic partners, improving appointment-booking completion rates from 61% to 88% after two iterative redesign sprints.
Partnered with 2 product managers and 4 engineers in a dual-track agile process, delivering 11 features on schedule across a 14-month roadmap with zero critical accessibility regressions.
Conducted competitive analysis across 9 telehealth platforms and synthesized a 40-page UX benchmark report adopted as the baseline for a $2.1M product investment decision.

UX / UI DesignerAug 2016 - May 2018

Crestline Digital Agency, Dallas, TX

Designed responsive interfaces for 17 client websites and web apps, achieving an average Google Lighthouse accessibility score of 91 across all delivered projects.
Created high-fidelity prototypes in InVision and Sketch that reduced client revision cycles by 25% by aligning stakeholders before development kick-off.
Mentored 2 junior designers through weekly critique sessions, both of whom were promoted to mid-level roles within 18 months.

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