David Moriarty

Full-Stack TypeScript Engineer · London, ON

Summary

Full-stack TypeScript engineer building production-ready SaaS systems with React, Node.js/Bun, and PostgreSQL.
Designs secure authentication and authorization layers (JWT with refresh token rotation, RBAC, tenant-scoped data models).
Ships end-to-end features with clean API boundaries, predictable state/data flows, and deployment on Fly.io + Cloudflare Pages.

Build typed applications using TypeScript across frontend and server-side runtimes.
Work within modern JavaScript ecosystems (Node-based runtimes, tooling, and module systems) to structure maintainable full-stack applications.

Build CRUD APIs with clear request/response contracts, validation at boundaries, and predictable status codes.
Organize routes and data access layers for maintainability, including protected routes and explicit error handling.

Implement authentication using sessions or JWTs, including refresh token rotation and HTTP-only cookie handling when needed.
Design authorization boundaries (RBAC, tenant-scoped access) with middleware for auth, validation, and consistent error responses.

Design relational schemas and write practical SQL queries for production web applications (PostgreSQL, SQLite).
Keep data access explicit and testable using lightweight query helpers or ORMs (Drizzle/Prisma) where appropriate.

Build structured web applications using MVC patterns with clear separation of routes, controllers, and data layers.
Experience with Ruby on Rails, PHP-based backends, and structured Express-style MVC applications

Build semantic, accessible UIs with keyboard-first navigation and clear focus states.
Apply progressive enhancement so core functionality works without JavaScript.

Maintain clean repos with consistent conventions, scripts, and documentation.
Ship iteratively with a focus on readability, debugging, basic testing, and production delivery (CI, deployments, environment config).

Bun + Hono + Prisma + PostgreSQL + React + TanStack Router

Built a full-stack notes application with Bun, Hono, Prisma, and PostgreSQL using a type-safe API surface.
Implemented JWT authentication with refresh token rotation and protected routes to support secure sessions.
Designed relational data models and request validation at system boundaries to keep contracts predictable and durable.

BHVR: Bun + Hono + React (Vite) + TanStack Router & Query + TailwindCSS + shadcn/ui

Built a full-stack task management application using Bun, Hono, and React with a shared TypeScript domain model.
Designed a clean REST API with JWT-based authentication, protected routes, and explicit request/response contracts.
Implemented end-to-end type sharing across client and server via a shared workspace package (Task, User, API responses).

Node.js + Express.js + EJS + SQLite (better-sqlite3)

Built a fundamentals-first Express app with session-based authentication (register/login/logout) and protected routes.
Implemented task CRUD with status transitions and filtering backed by SQLite, using explicit query helpers for clarity.
Added a server-rendered dashboard UI with predictable request/response flows and minimal client-side JS.

Jan 2026 – Present

Remote

Architected a multi-tenant SaaS platform with workspace isolation and role-based access control (RBAC).
Implemented secure authentication using JWT access tokens with refresh token rotation and protected API routes.
Built a full-stack TypeScript monorepo (Bun, Hono, React, Turborepo) with shared types across client and server.
Modeled relational data architecture in PostgreSQL using Drizzle ORM.
Deployed services using Fly.io (API) and Cloudflare Pages (frontend).

Oct 2025 – Present

Remote

Architected a production-style SaaS application with Bun, Hono, Prisma, and PostgreSQL.
Implemented JWT authentication with refresh token rotation and HTTP-only cookie handling.
Designed a RESTful API layer with explicit request/response contracts and request validation.
Structured a TypeScript monorepo with shared domain types across backend and frontend.
Deployed frontend and backend independently (Cloudflare Pages + Fly.io).

2016 – 2023

Western University · London, Ontario, Canada