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Dev Sac

Custom Web Application Development

Custom web application development with TypeScript and Cloudflare Workers. Full-stack apps built for speed, from MVP prototypes to production systems.

Node.js TypeScript React Cloudflare Workers SQLite Astro
<50ms
API Response Time
22
Modules Shipped
Zero
Cold Starts

When You Need More Than a Website

A website shows people information. A web application lets them do something with it. If your users need to log in, manage data, run calculations, track inventory, or interact with other systems, a static website is not going to cut it. You need a custom application built around your specific workflow.

I build full-stack Node.js web applications for businesses and startups that have outgrown spreadsheets, manual processes, or off-the-shelf tools that do not quite fit. Every application ships with TypeScript across the entire codebase, a proper database schema, API endpoints, authentication, and deployment infrastructure. These are production systems, not prototypes that need to be rebuilt later.

TypeScript End-to-End, Deployed to the Edge

Every application I build runs TypeScript from the frontend through the API layer to the database queries. One language across the full stack means fewer bugs at the boundaries, faster development cycles, and a codebase any TypeScript developer can maintain after handoff.

For applications that need speed and global reach, I deploy on Cloudflare Workers in production. Sacramento Groceries runs its entire backend on Workers with a D1 database. API responses come back in under 50ms because the code runs at the edge, close to the user. Zero cold starts, zero servers to manage, and the infrastructure scales automatically. For applications that need a traditional server, I build on Node.js with Express or Hono and deploy to your preferred cloud.

Real Applications, Not Mockups

ContentMK is a desktop content management application I built with Electron, React, and SQLite. It has a 13-table database schema, 22 functional modules, two-way WordPress API sync, AI integration with per-site access control, and a tag management system that catches duplicates across 1,800+ tags using Levenshtein distance matching. That is the level of complexity I work at.

Home Inventory is a full-stack Next.js application that tracks household items, warranties, maintenance schedules, vehicles, and home improvement projects. The grocery price comparison tool is another example of a data-driven application built to solve a specific local problem. It includes bulk data import, per-item file management, and Home Assistant smart home integration. Every module connects to a shared SQLite database with Zod validation across all data models.

What a Project Looks Like

Every engagement starts with a discovery session where I map out your requirements, identify your users, and define the data model. I research your domain, understand the workflows you are trying to automate, and propose an architecture before writing any code. You see a database schema and API design before the first line of application code is written.

I build iteratively. You get working software at each milestone, not a big reveal after three months of silence. Most web applications launch an MVP in 8-10 weeks, with additional features shipped in 2-4 week cycles after that. If you are validating a startup idea, I scope the MVP to the smallest set of features that proves whether the concept works.

Beyond the Launch

Applications are not one-time projects. Users request features, business requirements change, and integrations need updating. I provide full documentation, deployment procedures, and a handoff session so your team can operate the application independently. For ongoing development work, I am available for feature additions, performance optimization, and infrastructure updates.

Edge-deployed applications on Cloudflare Workers require almost no maintenance. There are no servers to patch, no OS updates to apply, and no scaling configuration to tune. The infrastructure handles traffic spikes automatically. For applications that need ongoing SEO and marketing support, I partner with Frog Stone Media for search strategy and content.

How It Works

1

Discovery

Requirements, users, and technical constraints

2

Architecture

Database schema, API design, tech stack selection

3

Build

Iterative development with working demos each milestone

4

Deploy

Production infrastructure, monitoring, and handoff

Frequently Asked Questions

How much does custom web application development cost? +
Custom web applications typically range from $10,000 to $50,000+ depending on complexity. A simple CRUD app with user accounts and a database starts around $10,000. Applications with real-time data, third-party integrations, and complex business logic range from $25,000 to $50,000. I provide a detailed estimate after understanding your requirements.
How long does it take to build a web application? +
Most web applications take 8-16 weeks from kickoff to production. Simple tools with straightforward data models take 8-10 weeks. Applications with multiple user roles, integrations, and complex workflows take 12-16 weeks. I deliver working software at each milestone so you can test and give feedback throughout.
What is the difference between a website and a web application? +
A website displays content. A web application lets users do things: create accounts, enter data, run calculations, generate reports, manage inventory. If your users need to log in, interact with a database, or perform tasks, you need a web application. If they just need to read information and contact you, a website is enough.
What tech stack do you use for web applications? +
TypeScript across the full stack. React or Astro for the frontend, Node.js or Cloudflare Workers for the backend, and SQLite or PostgreSQL for the database. I choose the specific combination based on your requirements. Edge-deployed apps on Cloudflare Workers deliver sub-50ms response times with zero cold starts.
Can you build an MVP first before the full application? +
Yes, and I recommend it. Building an MVP lets you validate your idea with real users before investing in the full feature set. I scope MVPs to the smallest set of features that prove whether the concept works. Most MVPs launch in 6-8 weeks. From there, we iterate based on actual usage data.
How do you handle web application security? +
Security is built into the architecture, not bolted on. Every application gets input validation, parameterized queries, authentication with hashed credentials, HTTPS enforcement, and CORS configuration. Edge-deployed applications on Cloudflare Workers have an additional security advantage: no origin server to attack, no traditional server vulnerabilities.
What happens after the web application launches? +
I provide documentation, deployment procedures, and a handoff session so your team can operate independently. For ongoing development, I am available for feature additions, bug fixes, and infrastructure updates. Edge-deployed applications on Cloudflare Workers require minimal maintenance since there are no servers, no OS patches, and no scaling configuration.
Do you build mobile apps too? +
I build progressive web applications (PWAs) that work on any device including phones and tablets. PWAs install like native apps, work offline, and send push notifications, but they run in the browser so there is no App Store approval process. For most business applications, a PWA delivers the same user experience as a native app at a fraction of the cost.

Based in Sacramento, CA

Serving clients nationwide.

Ready to build your web application?

Tell me about your project. I will scope it, estimate the timeline, and give you an honest assessment of what the right tech stack is.

Start a Project