Dwayne Duprey

Product Systems Architect · Lead Product Designer · Founder

Designing the operating systems behind modern digital products.

I'm Dwayne Duprey — I design complex product systems where software, AI, and human workflows converge. My work spans enterprise commerce platforms at J.Crew Group and Sefton, an AI-native clinical operating system for allied health.

Selected work

Sefton

Founder

2026 — Present

An operating system for allied health

Context. Lean practices juggle six to eight disconnected tools — and often give a billing vendor a cut of collections. Decision. Build the operating layer itself: billing-first, bilingual, one place.

Sefton is an operating system for allied health practices — bilingual, billing-first, replacing six to eight vendors with one layer that runs the visit, the back office, and the business. Care is bilingual to the core: real-time interpreted telehealth with live captions and dubbing in seven languages, and a patient portal in ten. Sefton Voice is not a scribe — it's the pipeline from conversation to revenue: it drafts the SOAP note ambiently, suggests ICD-10/CPT codes with confidence scores, and hands a clean claim to built-in billing (claims, prior auth, denials, ERA) — nothing coded or billed unattended, and practices keep 100% of their revenue.

The same layer runs the practice itself: onboarding fills itself in through eligibility checks and NPPES autofill, staff coordinate in encrypted team chat, meetings write their own notes and action items, and opt-in network intelligence benchmarks coding and payer performance against anonymized peers — one dashboard, on web and native iOS. Sefton is named for the part of Liverpool I grew up in — and built alongside a speech-language pathologist of 18 years.

6–8 → 1
Vendors → one platform
10
Languages — captions, dubbing, portal
100%
Revenue kept
Platform DesignHealthcare TechnologyAI Product Design
THE OPERATING LAYER — APPOINTMENT TO CLEAN CLAIM Schedule Visit interpreted telehealth Note Sefton Voice · ambient Code ICD-10/CPT · confidence Clean claim prior auth · denials · ERA One layer, everywhere the practice runs web · native iOS Patient portal · 10 lang Encrypted team chat AI meeting notes Eligibility & NPPES autofill Network intelligence Nothing is coded or billed unattended — the clinician confirms every suggestion.

J.Crew Group

Design Systems · AI

2026

An AI-native design system, built from scratch

Context. Design and code shipping from separate sources of truth, with handoff measured in days. Decision. Make production the single source of truth — and generate comps, prototype, and spec from one ticket.

A production-truth pipeline that turns a single ticket into Figma comps, an interactive prototype, and a code-traceable spec in one pass — 400+ code-connected components across nine commerce surfaces, cutting handoff from days to hours. It's infrastructure for how design ships across the platform — one source of truth from comp to code, reliable and fast.

400+
Code-connected components
9
Commerce surfaces
Days → hours
Handoff time
AI Product DesignDesign SystemsWorkflow Automation
Design-to-dev handoff time Design-to-dev handoff time Traditional handoff days AI-native pipeline hours One ticket → Figma comps, interactive prototype, and code-traceable spec — in a single pass.

J.Crew Group

Lead Product Designer

2022 — Present

Rebuilding the product page as a system

Context. The product page is the highest-leverage surface in commerce. Decision. Treat it as a reusable system and prove it against a live control — not a one-off redesign.

Led the J.Crew PDP redesign, tested against a live control across J.Crew and Factory. The new page moved the numbers that matter — add-to-cart, conversion, average order value, and revenue per visit all up — by treating the product page as a reusable system rather than a one-off screen.

+41%
Add-to-cart
CVR · AOV · RPV
All up vs. control
Product SystemsE-commerceA/B validated
J.Crew PDP redesign — interactive prototype (size & color selection, add-to-bag, gallery)

J.Crew & Madewell

Product Design

2022 — Present

A/B-validated wins across the funnel

Beyond the product page, I drove conversion gains across PLP, checkout, and search on both brands — each shipped against a live control and measured, not assumed.

+7.7%
Madewell single-page checkout · guest CVR
+6.69%
J.Crew search · mobile RPV
CheckoutSearchConversion

Gap Inc.

UX/UI Designer

2019 — 2022

Design systems across five brands

Built and maintained the design system behind the CMS web platform for all five Gap Inc. brands — Gap, Banana Republic, Athleta, Old Navy, and Janie & Jack — from concept to production with engineering and business leadership. Also designed a Gap and GapKids capsule for The Gap Collective, the brand's Black History Month collection.

Design SystemsCross-brandCMS

Dupréy Designs

Founder & Principal

2008 — Present

Community to platform

An independent product and brand practice spanning full-cycle UX/UI, responsive web, and iOS, alongside brand identity and live experiences. Founded NYC Kopites, a New York Liverpool FC community that seeded Carragher's NYC — brand, experience, and Liverpool FC legend events — Steven Gerrard, John Barnes, Bruce Grobbelaar and more — scaling to a 2018 World Cup billboard campaign in Times Square.

BrandExperienceCommunity
Carragher's NYC Times Square billboard
Carragher's NYC — 2018 World Cup Times Square billboard (39th & 7th Ave)
Carragher's NYC crest
Carragher's NYC — brand identity

Recognition

Business of Fashion

Case study

Featured in the Business of Fashion e-commerce playbook

J.Crew's e-commerce experience featured in Business of Fashion's “How to Create the Perfect E-Commerce Site.” The platform reflects multi-year UX improvements aligned with the Baymard benchmark, elevating it to a category-leading position among industry peers.

About

I design at the systems and platform level — the reusable structures underneath products, not individual features. My work spans multi-brand commerce, AI-native design tooling, and, most recently, healthcare infrastructure.

The through-line across sixteen years is the same: turn a community or a workflow into a system, then turn the system into a platform. I care about calm, high-signal interfaces and the operational rigor that makes them ship.

Focus

Product Systems Design
Product Strategy
Design Systems
Platform Design
AI Product Design
Workflow Automation
Cross-Functional Leadership
Healthcare Technology
E-commerce

Work eligibility

EU · UK · US — no sponsorship

Full right to work across the EU, the UK, and the US. Irish (EU), British & American citizen.

Let's build something that lasts.