Freelancers in Las CondesFreelancers in Las Condes
Turning ideas into memorable brands.
$1k+
Earned
2x
Hired
5.0
Rating
108
Followers
Turning ideas into memorable brands.
Creator, Artist & Musician on-chain
$5k+
Earned
54
Followers
Creator, Artist & Musician on-chain
AI & No-Code Builder | Founder of Onyx Labs Agency
1x
Hired
4.2
Rating
30
Followers
AI & No-Code Builder | Founder of Onyx Labs Agency
Cover image for Wadi Wheels: Architecture & Workflow
Wadi Wheels: Architecture & Workflow Breakdown At Hertz, I saw firsthand that car rental is an inventory-concurrency problem disguised as customer service. Here is how Wadi Wheels automates the entire loop from database lock to key handover. Database-Level Inventory (Zero Double-Booking) Most platforms subtract bookings from total cars. That fails in real life. Turnaround Buffer: Enforces a mandatory 2-hour cleaning/inspection buffer between rentals directly in the database query. Atomic Concurrency: When a customer clicks Pay, a PostgreSQL advisory lock (pg_advisory_xact_lock) serializes requests per car class. Two people cannot book the last car at the same second. 2. Autonomous Assignment Engine The moment the 20 JOD demo deposit clears: Vehicle Match: Automatically assigns a free, active car from the chosen class (e.g., Hyundai Tucson, plate 21-45872). Bay Allocation: Reserves a parking spot in Zone B (e.g., Bay B-1-2) with guaranteed spacing around the arrival time. Private Trip Token: Generates a secure, unguessable 24-byte hex token. No renter login or password required. 3. The Digital Boarding Pass (/trip/:token) Replaces the physical counter queue entirely: Gate Pass QR: Scans at the Zone B pedestrian access barrier. Key Safe Pass + 6-digit PIN: Unlocks the secure lockbox column beside the vehicle. 4-Step Visual Route: Takes the renter step-by-step from Queen Alia arrivals directly to their driver’s seat. 4. Operations & AI Triage (TypeSafe Jev) Live Fleet View: Realtime dashboard tracks vehicles, active bays, and hours saved for staff. Smart Inquiry Inbox: Free-form WhatsApp or web messages (in English, Arabic, or Arabizi) are processed by TypeSafe Jev. Instant Decisioning: Flags urgency, topic (availability, price, dates), and language—then auto-generates a pre-filled booking link so staff can reply in one tap. Results Counter Wait Time: Reduced from 45 minutes to under 3 minutes. Staff Overhead: Eliminates midnight handovers and manual WhatsApp scheduling. Stack: TanStack Start (React 19 SSR), PostgreSQL (RLS), TypeSafe Jev AI, Tailwind CSS.
1
1
172
Senior Product Designer | Founder of Valentina UX
5.0
Rating
8
Followers
Senior Product Designer | Founder of Valentina UX
UX/UI Researcher and Brand Designer
5.0
Rating
UX/UI Researcher and Brand Designer
Brand identity for ambitious tech and service brands
New to Contra
Brand identity for ambitious tech and service brands
Web developer, 3D modeler and illustrator
5.0
Rating
3
Followers
Web developer, 3D modeler and illustrator