Sam Rostami

Imagine. Build. Ship. 

Personal Projects

Built solo, end to end, from the first idea to a live URL. Each one is something I wanted to exist, shipped with real users in mind.

BulletBank screenshot 1
AI Career Tool · Built Solo · Open Source

BulletBank

A full-stack AI-powered career tool built solo from scratch. Features a personal bullet bank of real achievements, AI job-fit scoring, a tailored CV builder, cover letter generation, personalised interview prep and performance-review packs. Open-sourced with a 190+ test Vitest suite and GitHub Actions CI.

  • Next.js
  • Supabase
  • Claude API
  • Vitest
The Replay Cup screenshot 1
Football Simulation · Data Product · Live

The Replay Cup

A what-if simulator for the 2026 World Cup knockouts. All 16 real matches are replayable with your own lineups, formations and instructions on a possession-level engine: team strength fitted on 4,000+ real internationals, every kick-off replayed 1,000 times in a background worker, and a live 3D pitch. A full “how it works” page shows every formula and constant.

  • React
  • TypeScript
  • Three.js
  • Web Workers
  • Vitest
Startup Simulator screenshot 1
Browser Game · Built Solo · Live

Startup Simulator

A quick card game about building a startup. Twelve months, five stats, up to three moves a month; events force a decision, combos reward focus, and your user count decides the ending. Balanced with a headless simulator that plays thousands of runs, and smoke-tested end-to-end with Playwright.

  • React
  • Vite
  • Express
  • Playwright
AI Conversation Bridge screenshot 1
Chrome Extension · Privacy-First · Published

AI Conversation Bridge

Export, organise, compare and move AI chats between ChatGPT, Claude, Gemini and Perplexity as Markdown, JSON or HTML, with a searchable local library, tags, notes and reusable prompt templates. No account, no server, no analytics: everything stays in the browser.

  • Manifest V3
  • JavaScript
  • Chrome Storage
Interview Teleprompter screenshot 1
Chrome Extension · Productivity · Published

Interview Teleprompter

A transparent, draggable, click-through overlay that keeps your interview notes on screen: visible to you, invisible to everyone else on the call. Accordion navigation, adjustable opacity, keyboard shortcuts, and it works on Google Meet, Teams, Zoom and any browser-based meeting.

  • Manifest V3
  • JavaScript
  • Chrome Storage

Professional Work

Products I led or co-founded as part of a team: three Innovate UK AI projects, each a different pattern of AI work, and a bootstrapped e-commerce business.

CADENCE screenshot 1
Innovate UK Project · Multi-Agent AI · Product & Architecture Lead

CADENCE

Agentic AI for automotive manufacturing: six coordinated agents that automate PPAP approval for Tier-1 suppliers. Upload an engineering drawing and the system extracts tolerances with AI vision, checks them against real machine capability, validates supplier readiness and generates audit-ready PPAP documentation, catching capability failures before tooling costs are locked in. I defined the product and architecture, prototyped it stage by stage for the dev team, and designed the three-layer explanations, tamper-evident audit trail and hard human approval gate so nothing is submitted without a qualified engineer signing off.

  • Multi-Agent Orchestration
  • Explainable AI
  • Human-in-the-Loop
  • Audit Trails
  • IATF 16949
Private client project, no public link
RaiDOT screenshot 1
Innovate UK Funded · AI SaaS · Product Lead

RaiDOT

AI governance and compliance platform for UK SMEs. After 10+ discovery interviews showed customers lacked the AI maturity to complete a governance assessment, I pivoted the entry point to a learning product: 5 Responsible AI modules, an adaptive AI assistant and a CMS the internal team runs themselves, now at 250+ users across 20 SMEs. Also built the LLM evaluation pipeline, where a judge model scores generated risk and fairness reports against 10 expert-approved reference scenarios before release.

  • Product Strategy
  • LLM Evaluation
  • LLM-as-Judge
  • Agile
AIquaBoost screenshot 1
Innovate UK Funded · Mobile App · Product Lead

AIquaBoost

AI-powered aquaculture management app built with Flutter, part of a £140k funded project. Cut the computer vision scope from full egg grading to egg counting after interviews with hatchery operators showed water quality monitoring mattered more and training data was too thin to cover every species. Rebuilt the app solo in 8 weeks when the engineering team collapsed, shipping a species-specific RAG layer grounding LLM recommendations, live IoT sensor data and English and Arabic localisation on a fixed Innovate UK milestone.

  • Flutter
  • RAG
  • IoT
  • Computer Vision
Manolight screenshot 1
E-Commerce · Co-Founder · 5 Years

Manolight

E-commerce gift business co-founded and scaled from zero. Grew to 61,000+ Instagram followers and 10,000+ monthly site visitors through data-driven content and SEO strategy. Redesigned checkout and product customisation into a fully automated journey, lifting conversion by ~15% and repeat purchase by ~25%, automated ~80% of routine customer communications, and built a team of 6, growing to 8 at peak, across operations, marketing and customer support.

  • WooCommerce
  • Growth
  • A/B Testing
  • Operations