Portfolio

Guy Aviv

Product & Project Manager | AI-Assisted Builder

I own client products from discovery to release, and I build working prototypes and products with AI.

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4+ years at BSX Ltd, 8-10 client accounts at a time, 6+ product launches shipped. Holon, Israel.

Case studies

Vinomate

AI sommelier kiosk Client project

Problem
A wine store wanted an in-store tablet that recommends wine by taste profile, dish, occasion and budget, and remembers what each customer chose so the next recommendation is sharper.
My role
Product manager: requirements, prototype and design handoff.
What I did
  • Wrote the PRD: testable, ID-tracked requirements for 3 interfaces (customer kiosk, store back office, super admin), 5 user roles, and a server-side LLM for the chat sommelier and catalogue enrichment.
  • Built the interactive hi-fi prototype with Claude Code and took it through 10 client iterations: SMS/QR sign-in, taste-profile scales, a returning-customer feedback loop, event planning, offline guest mode, Hebrew RTL.
  • Wrote a 12-part Figma Make prompt library for design handoff, and worked on the investor deck.
Result
A clickable prototype the client reacted to across 10 iterations, backed by a PRD developers can build from.
Vinomate prototype, the taste profile screen in Hebrew: red and white wine profiles with their completion level, diet preferences, and taste scales for sweetness, acidity, tannins and body.
Taste profile screen from the hi-fi prototype (Hebrew, right to left).

Demo on request

Tongue-diagnosis health app

Complementary medicine Client project

Problem
A consumer app that reads a photo of the tongue and returns nutrition, sleep and lifestyle guidance, with family profiles and a subscription. The design had to be ready for development.
My role
Product manager: design audit, requirements, flows and wireframes.
What I did
  • Audited the design across 60+ screens and 17 flow areas.
  • Wrote the PRD and mapped the end-to-end flow.
  • Wireframed the screens, including a 22-screen family-profiles flow.
  • Ran competitor research with the client.
Result
20 issues logged before development: pricing conflicts, consent and sign-in gaps, unhandled acute-symptom answers.
Lo-fi wireframe of the app's user flow in Hebrew, nine phone screens in a row: intro video, sign-up, home, before the scan, choosing a complaint, medical background, photo with a warning, the free result, and the paid plan with nutrition.
End-to-end user flow, lo-fi wireframes (Hebrew, read right to left).

Wireframes on request

HeChatzer החצר

Lists and turns for friends and family Own product

Problem
Lists, turns and who-brings-what for friends and family, with the data end-to-end encrypted so the server only ever stores locked data.
My role
Everything: PRD, brand, every screen and the code, built with Claude Code.
What I did
  • Offline-first PWA with AES-GCM encryption, ECDSA-signed events, and Face ID sign-in through passkeys.
  • Runs on Cloudflare Pages, D1 and R2.
Result
105 automated tests (51 unit, 24 server, 30 browser on 3 phones) gate every merge in GitHub Actions. Designed to run at ₪0 a month up to ~1,000 daily users.
HeChatzer welcome screen in Hebrew: a headline welcoming you to the yard, four cartoon ducklings, a name field and a green button to enter. HeChatzer event yard in Hebrew for a Friday barbecue: a progress bar of items taken and a list of items, each with an I'll bring it button. HeChatzer home yard in Hebrew: chores in turns, with green cards telling you it is your turn to do the dishes, take out the trash and clean the living room.
Welcome, an event yard (who brings what), and chores in turns. Demo data from the automated browser tests.

hechatzer.pages.dev

Squad Journal

PUBG stats site Own product

Problem
Our five-person gaming squad lived in a WhatsApp group with no memory.
My role
Built it end to end with Claude Code.
What I did
An auto-updating stats site on Cloudflare Workers, on the free tier.
Result
Our matches become session recaps and weekly stats on a page anyone can open.
Squad Journal home page, dark theme: season totals for sessions, matches, chicken dinners and kills, and the latest session recap with placements, kills and damage.
Season totals and the latest session recap.

squad-journal.guyyyy15-web.workers.dev

17 custom AI agent skills

For Claude Code Own work

Reusable skills that run whole workflows, for example:

  • A Python puzzle-book generator with verified solutions and print-ready PDFs
  • A spec architect
  • A Hebrew RTL fixer
  • A job-hunt engine

How I work with AI

  1. Spec first

    The model builds from a PRD with acceptance criteria, not from a vague prompt.

  2. Test-gated

    Nothing merges without green tests.

  3. Cost-aware

    Free tiers and simple stacks, by design.

Experience

Product & Project Manager, BSX Ltd, Holon

Mar 2022 to present

Software house building web and mobile products for B2B and B2C clients.

  • Own 8-10 concurrent client accounts from discovery and PRD to QA and app-store release, and shipped 6+ launches with developers, designers and QA.
  • Halley (automotive B2B): designed the rental-fleet expansion that opened a new customer segment (car-rental companies) and reworked flows to cut recurring bug volume.
  • Mushgach+ (Android, 3,000+ daily active users): solved device-level compatibility failures on Chinese OEM phones, working directly with Google.
  • Geffen Medical (B2B healthcare): led feature rollouts and the support process for a diabetes patient-care platform.

Wedding & Events Photographer and Creative Producer, self-employed

2013 to 2022

Head of Commander's Office, IDF Infantry School

2010 to 2013