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A PORTFOLIO BY SAHIL MATHEW — BUILT WITH AI AGENTS, DIRECTED BY A DESIGNER

Scroll to play — or skip scenes with ↓ / the rail

SC.01 — THE THREAD

2014 — 2018

The foundations

Future Beyond and Neplar Corei — WordPress builds, then front-end development and senior UI design. I learned design and code as one job before the industry decided they were two.

DESIGN-TO-CODE FROM DAY ONE

2018 — 2021

The craft years

Three years at Protopillar: end-to-end interfaces, journey maps, personas built from primary research, and analytics-driven iteration. The unglamorous reps that make judgment fast later.

2021 — 2024

The proving ground

A rapid sequence — Vivoiz Healthtech, a design system from scratch on contract at AI Enterprise, a UX audit of a major property platform at CX100 that surfaced 30+ critical gaps, then independent consulting. Different domains, same brief: something is too complex, and people have to use it anyway.

+60% ENGAGEMENT · +70% SATISFACTION · SYSTEMS FROM SCRATCH

2024

Principal, proven

Principal UX Designer at Seanergy Digital. A research-led redesign of core product interfaces — moderated and unmoderated testing cycles, synthesized into changes the engineering team actually shipped.

+60% ENGAGEMENT · +70% SATISFACTION · ONE QUARTER

2025 — NOW

The system at scale

Staff UX Designer (Design Lead) at Alshaya Group. I own design strategy for a multi-brand retail platform ecosystem — and architected the design system that holds it together: 200+ standardized components across 6+ product surfaces. First product shipped within 3 months of joining; adoption rose 35%.

200+ COMPONENTS · 6+ SURFACES · +35% ADOPTION

SC.02 — THE ITCH

So I started shipping my own.

SHIPPED · 2025

PrismKit

AI DESIGN AUDIT TOOL · DESIGN, CODE, LAUNCH

An AI design audit tool built on an agentic architecture in 2025 — before agents were a recognized category. Point it at a screen and an agent walks it the way a reviewer would: a structured critique of hierarchy, consistency, and accessibility. Launched on Product Hunt in August 2025.

AGENT-DRIVEN BEFORE IT WAS A CATEGORY · PRODUCT HUNT · AUG 2025

PrismKit — product screenshot

SHIPPED · 2025

SignalHQ

PRODUCT INTELLIGENCE PLATFORM · END-TO-END

A predictive product intelligence platform: real user behavior turned into conversion improvements, smarter experiments, and forecasted outcomes. The most advanced thing I've built — aimed at a niche the big analytics suites fly over, and in active refinement toward it.

LIVE · PREDICTIVE INTELLIGENCE · ACTIVE REFINEMENT

SignalHQ dashboard — predictive product intelligence

IN BUILD · 2026

Crit

THECRIT.TOOLS · NEXT.JS 16 · SUPABASE · ANTHROPIC API

Walk into critique armored. Crit prepares product designers for critique sessions: upload your work, get a structured four-section report before anyone else sees it. Auth, schema, and workspace architecture are live; the critique engine is in active build.

Crit — product screenshot

KILLED · 2025

PrintPrompt

AI 3D MODEL GENERATOR · VALIDATED, THEN STOPPED

An AI model generator for 3D-printer owners. Sprint 2 validation showed the generation API produced geometry that was shape-wrong, not scale-wrong — a flaw no amount of downstream normalization could fix. I killed it in a week instead of polishing it for a year. Knowing when to stop is a design skill too.

Some shipped. One didn’t. All of it is the point.

SC.03 — THE SYSTEM

One design language, six surfaces, two hundred components.

Tokens before components.

CONSUME010203040506THEMEBRAND ABRAND BBRAND CDEFINECORE TOKENS
FIG.01 — TOKEN INHERITANCE ACROSS A MULTI-BRAND ECOSYSTEM

The system includes the humans.

DISCOVERYDESIGNHANDOVERBUILDPROTOCOLLED — NO IMPLICIT KNOWLEDGESHIPDESIGN QACATCH, DON'T REWORK
FIG.02 — DELIVERY MODEL WITH QA CHECKPOINT, NOT QA AFTERTHOUGHT

Two hundred components, one source of truth.

DESIGN SYSTEMSURFACE 0142SURFACE 0238SURFACE 0335SURFACE 0431SURFACE 0528SURFACE 0626+SHARED CORE
FIG.03 — COMPONENT DISTRIBUTION ACROSS SURFACES, SHARED CORE HIGHLIGHTED

SC.04 — THE METHOD

Strategy by me. Execution by agents. Judgment throughout.

INTENTSPECAGENT BUILDVERIFYSHIPCORRECT THE SPEC, NOT THE OUTPUT
FIG.04 — THE OPERATING LOOP. HUMAN JUDGMENT AT THE GATE.

Exhibit A: this film.

SC.05 — THE BET

Design is leaving the screen.

The interfaces I’ve spent twelve years designing assume a human is looking at them.

That assumption is expiring.

AI agents now read, navigate, and act on digital products directly — which means experience design is becoming architecture: structuring systems so that both humans and machines can use them well.

That’s the bet my work is converging on.

I’m not waiting for it to be obvious.

SC.06 — CREDITS