Kameron Sheffield

Architected and built Base, a TypeScript application framework for Cloudflare Workers, and used it as the technical foundation to launch and operate two companies in production.

• Designed and built the complete framework surface: a scoped dependency-injection container, decorator-driven module system, GraphQL and versioned RPC layers, WebSockets on Durable Objects, and queues — with a platform abstraction that runs the same application model on Cloudflare or Node
• Designed and built Base’s data layer — a portable ORM built on Drizzle that abstracts schema and storage behind a single API, with production adapters for PlanetScale (MySQL) and Cloudflare D1 / Durable Object SQLite, dirty-tracking entities, and a migration lifecycle with release gating
• Designed a fully serverless architecture for low-cost horizontal scale using Cloudflare Workers, Durable Objects, D1, R2, Queues, and PlanetScale
• Built the developer platform around the framework: a CLI covering scaffolding, bundling, local development, deployment, migrations, and log tailing, plus 14 custom type-aware ESLint rules enforcing framework invariants beyond the compiler
• Operated at platform-team scale as a solo framework engineer by building AI-augmented engineering workflows, including a layered documentation architecture designed for effective agentic development
• Led and mentored a backend engineering team of 3–6 engineers at phi.health
• Designed workflow orchestration, authentication, analytics, metering, billing, deployment, and observability systems

Led and delivered large-scale mobile product initiatives across core Snapchat experiences used by hundreds of millions of users, from pre-IPO through IPO and beyond.

• Built and shipped major features across iOS and Android, including Snapcodes, Scan, and Shazam integration
• Led technical delivery for Snapbot, a vending machine for selling Spectacles
• Led Lens Carousel and Scan integration for Spectacles AR glasses
• Managed the mobile Spam and Abuse engineering team; led teams of 3–6 engineers across product initiatives
• Worked closely with product and design teams to ship high-impact consumer experiences

First engineering hire and technical lead for mobile product development at Scan, a market-leading mobile QR and barcode scanning platform later acquired by Snap Inc.

• Served as the first engineering hire, leading all mobile application development and writing the majority of production client code across iOS, Android, Windows Phone, and Windows 8
• Helped grow the platform to tens of millions of users
• Led product architecture, feature delivery, and cross-platform technical strategy through the company’s successful acquisition by Snap

Early Experience