Yewdiel VenzorYewdiel VenzorYewdiel Venzoryewdielv10@gmail.com

My name is Yewdiel Venzor, a Brand and Digital Product Designer based in Austin, Texas, with 8+ years building and evolving brands across a wide range of industries. My approach pairs foundational branding and user experience with hyperfast prototyping and AI-driven experimentation — turning strategic vision into real, testable products fast. I believe the strongest brands are built with consistency and purpose, yet flexible enough to adapt as markets shift. I design with both creative vision and business insight, helping brands grow with meaning, not just momentum.

Yewdiel Venzor, side profile

Work

  • MAY 26Black Diamond MarketplaceMAY 26productbrandfull-stackagentic
  • JUN 25Titan DrillingJUN 25identitywebsite
  • APR 25Breneman CapitalAPR 25identitywebsiteads
  • JUN 22My Vida OriginsJUN 22packagingphotography
  • OCT 21My Vida SkinOCT 21identitypackaging
  • MAR 21Black Diamond DrillingMAR 21identitywebsitemerch
  • NOV 20Dr. Asael VenzorNOV 20identity

Black Diamond Marketplace

Date
MAY 2026
Role
Solo — brand, UX, UI, product, and engineering
Type
Web application
Domain
blackdiamondmkt.com↗
Stack
Next.js · Auth · Supabase · Stripe · Anthropic API · Cursor

Converting a local shop, to a global marketplace.

The problem

Heavy equipment still moves the way it did twenty years ago. Buyers are restricted to brochure style websites that are outdated and bounded by listing managers as well as auction houses cornering you into an impossible bidding war.

The industry already has supply and demand, now it needs technological sovereignty.

The solution

Create a designated marketplace that is easy the connection between buyers and sellers supported with AI without losing human contact and regaining full control of negotiation power.

The strategy

Black Diamond already has a name, a diamond mark, and years of equipment credibility. To make a generational shift in the industry, we must design a product that falls in line with the new generations technology familiarity. This start with changing our brand positioning.

“Machinery Deals Made Easy. Human-first. AI-supported.”

The brand system

Our UX and brand system was designed with our target user in mind. That is why we needed simple UI elements that are familiar on other platforms, making it easy for our target audience to navigate and use our platform.

Listing generation

AI is a tool, not the product. The product is trust + speed. AI removes the blank listing form. Verification and direct contact do the rest.

I implemented an easy-to-use listing generation process where the seller can write out what they're selling exactly as they would speak in person. Our AI system then writes the listing and extracts all the specs from the equipment that the user talked about. Users can then make changes, upload their photos, and publish their listing in less than 1 minute.

Listing generation

Verification grading

Once the user submits their listing, it goes into pending approval, where our backend verification AI agent grades the listing and auto-approves great listings or sends feedback on listings that need improvement or changes. This allows for the highest-quality content on our website inventory improving speed and trust.

Verification grading

Inquiry verification

One of our biggest ambitions is to reduce spam and fraud probabilities when it comes to connecting buyers and sellers. I implemented a backend AI agent that verifies inquiry submissions and analyzes them for any potential fraud or scam keywords filtering out any possible phishing bots and delivering the best potential buyers to our users.

AI Verification Flow

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Architecture

Client

  • ●Next.js App Router
  • ●Public routes — home, search, listings, about, pricing, how-it-works, journal, sellers
  • ●Dashboard — seller desk for listings, media, and membership
  • ●Auth — login and signup

Services

  • ●Auth and sessions — accounts, roles, and BD Verified
  • ●Catalog — listings, specs, photos, and search indexes
  • ●Stripe — Free, Starter, Pro, Max, and Enterprise
  • ●Anthropic — listing generation, verification grading, and inquiry screening

Objects

  • ●User — guest → member → verified seller / org seat
  • ●Listing — media, specs, price or RFQ, location, status
  • ●Inquiry — buyer → seller, gated by auth
  • ●Membership — plan, listing cap, badges, placements
  • ●Journal — content, SEO, trust