Full-stack developer
shipping real products.

A picks and pricing platform that builds a fair price for each market from sharp-book consensus, flags mispriced bets across every sport playing that day, timestamps each pick before the game starts, and grades every result against the closing line.

• 5,000+ picks across MLB, NBA, NHL & NFL, published in a downloadable CSV audit log with result, units, and CLV, losses included.
• Line shopping across 7 books & pick'em apps (DraftKings, FanDuel, BetMGM, Caesars, ESPN BET, Sleeper, Underdog), with tiered boards and Kelly-fraction staking.
• Lab Pro subscription: prop hit rates vs. fair odds, a stats explorer with box scores back to 2016, and a live +EV scanner, billed through Whop.
• Discord login and a Discord bot (/fair, /parlay, /log); automated grading from official box scores; deployed on Fly.io.

A Next.js 16 / React 19 web app, a C# .NET 10 API, and a cross-platform Expo / React Native mobile app — each submitted review is analyzed by OpenAI GPT-4o for sentiment, then published or rejected with a notification.

• PostgreSQL + EF Core backend on a 40-table schema, secured by JWT auth, BCrypt hashing, and per-IP rate limiting.
• GPT-4o auto-moderates a self-serve ad platform against policy ahead of Stripe manual-capture billing.
• Business owners claim listings, reply to reviews & spotlight staff by name; reviewers level up through "tater" ranks on a public leaderboard.
• Multi-channel notifications via SendGrid, Twilio & Expo push, plus geo-search with Google Maps & Leaflet.
• Dockerized with Cloudflare R2 object storage and automated migrations on startup.

Payment-method rules are evaluated on every cart by a Rust → WebAssembly Shopify Function, with an embedded merchant admin built on React Router 7, TypeScript, and Vite.

• One-click Scripts importer and visual rule builder with 18 conditions (cart total, country & ZIP, customer & product tags, lifetime spend, risk score) combined through OR groups.
• Risk-gated rule that hides Cash on Delivery using Shopify's order-risk signals, a capability Scripts never had.
• Type-safe Admin API access via Node.js, Prisma ORM & Shopify GraphQL codegen.
• Tiered subscription billing ($1.99–$9.99/mo, annual discount, 3-day trial), plan-gated rules, and config versioning & rollback (50-snapshot history).
• Pre-caches customer/product tags into metafields via webhooks to optimize checkout latency.
• Handles GDPR privacy/redaction webhooks; deployed to Fly.io with Docker and automated Prisma migrations.

Built on Shopify's native B2B companies, locations, and catalogs and launched after Shopify opened B2B to every plan in April 2026. Competitors fall back to retail pricing through plain Draft Orders; Counterline quotes from each buyer's real catalog price, and converted orders keep their terms and negotiated prices.

• Found and test-locked two easy-to-miss Shopify API behaviors that silently produce wrong prices on catalog lookup and draft-order conversion.
• Exact decimal money math end to end, backed by 68 test suites.
• Storefront quote-request extension, plus tiered plans on Shopify Managed Pricing with entitlements audited against the live listing.

15 modules and 80 lessons, from reading and fretboard basics through voicings, comping, the blues, bebop language, reharmonization, chord melody, and professional skills. Every lesson has playable notation and tab with audio, generated chord diagrams and fretboard maps, a practice assignment, and a quiz.

• A Python music-theory engine is the single source of truth: 8,800+ chord voicings and every theory table are generated, then verified by playing the frets back through a fretboard model.
• 439 notated examples are parsed by alphaTab at build time; the build checks every bar's rhythm and that claimed chord tones really fit the chord.
• Interactive tools: chord dictionary with a voice-leading assistant, scale finder, fretboard & ear trainers, and a metronome.
• 258 pytest tests pin the engine to textbook theory, and a headless-browser smoke test opens all 107 pages.