Custom Software Development

Software Development Services:
Web Apps, SaaS & AI Tools Built to Ship

We design and build custom applications, from client portals and internal dashboards to full SaaS products. We run our own software in production, including RankNest, an SEO platform with crawling, audits, and AI agents.

TypeScript End to End
You Own the Code
Weekly Staging Releases
AI Features in Production
Get Your Software Project QuoteSchedule Free Consultation

What We Build

If it runs in a browser and talks to a database, we build it. These are the shapes most projects take.

Custom Web Applications
Full-stack apps with auth, roles, and admin dashboards

Booking systems, quoting tools, review workflows, anything your business runs on that a template cannot handle. Built with server rendering so pages load fast and rank in search.

SaaS Products
From MVP to a platform customers pay for monthly

Multi-tenant architecture, subscriptions, onboarding, and usage tracking. We built RankNest this way, an SEO platform that crawls sites, runs audits, and manages link maps and experiments for multiple client accounts.

Client Portals & Internal Tools
Replace the spreadsheet that runs your business

Dashboards, project trackers, and portals where your customers log in to see their files, invoices, and progress. Our own client hub syncs Gmail, stores documents, and tracks every project in one place.

AI Features & Agents
Claude and OpenAI models doing real work, with human review

Document search with embeddings, email classification, and agents that propose actions for approval. We run an AI agent in production that triages our inbox and routes messages to the right client record.

API Integrations
Make the tools you already pay for talk to each other

Payment processors, Google APIs, CRMs, email platforms, and flight or inventory data feeds. We handle OAuth, webhooks, rate limits, and the retry logic that keeps integrations from silently breaking.

Background Jobs & Automation
Work that happens on schedule without anyone clicking

Scheduled syncs, report generation, data pipelines, and queued processing. The unglamorous layer that separates software you babysit from software that runs itself.

The Stack We Build On

The same stack on every project, including this website. No experiments on your dime, and no orphaned technology nobody else can maintain.

Front End
  • Next.js and React
  • TypeScript
  • Tailwind CSS
  • Radix UI accessible components
Back End & Data
  • Node.js
  • PostgreSQL with row-level security
  • Supabase auth, storage, and realtime
  • Inngest background jobs
AI & Search
  • Anthropic Claude models
  • OpenAI embeddings
  • Semantic document search
  • MCP tool integrations
Hosting & Delivery
  • Vercel edge deployment
  • Automatic preview environments
  • Resend transactional email

How a Project Runs

Six stages, a staging URL from week one, and no long silences.

1
Discovery

We map your workflow, the data you handle, and what the software must do on day one versus later. You get a written scope and a fixed quote.

2
Architecture

We pick the stack, design the database schema, and plan auth, roles, and integrations before any screens are built.

3
Design

Working interface designs for the core screens. You click through them and correct course before development starts.

4
Build

Development in weekly increments on a staging URL you can open anytime. You watch features land instead of waiting for a reveal.

5
Launch

Production deployment, data migration if you have existing records, and training for your team.

6
Iterate

Usage tells us what to build next. We ship improvements in small releases.

Software We Have Shipped

Three builds that show the range, a SaaS platform, a client site with real infrastructure behind it, and an app concept designed end to end.

SaaS Platform
RankNest
SEO platform, built and run by Grindstone

Crawls client sites, runs technical audits, builds internal link maps, and tracks SEO experiments against Google Search Console data. AI agents handle analysis work that used to take hours per site.

See our work
App Concept
Bonita BVI Flight Tracker
Flight tracking app for a Caribbean charter operator

An app for tracking charter flights in the British Virgin Islands. It follows live flight data and alerts the crew on the ground when a plane gets close. Designed and built from scratch for the client.

See our work
Client Build
Priceless Healing
Practice site with booking and content infrastructure

A 30-plus page therapy practice site with a guided intake flow, printable client resources, and neighborhood pages built to rank across Dallas.

See our work

Why Build With Grindstone

We use what we build

RankNest and our client hub are not portfolio pieces we shipped and forgot. We work in them daily, which means we feel every slow query and confusing screen before your users would.

Design and engineering under one roof

Most dev shops bolt design on at the end. We are a design agency that ships production code, so the interface and the database schema get planned together.

Built to be found

We are an SEO agency too. Every application we build renders on the server, ships structured data, and passes WCAG accessibility scans. This website holds a zero-violation score across 45 public routes.

No lock-in

You own the repository, the database, and the accounts from day one. If you hire an in-house team later, they inherit documented, typed code on a stack they can hire for.

Software Development Questions, Answered

Have a Tool or Product in Mind?

Tell us what your business needs the software to do. We will scope it, quote a fixed range, and tell you honestly if you should build it at all.

Get Your Software Project QuoteSchedule Free Consultation
24-hour response time
No obligation quote

Or call us directly:

(512) 200-3927
Case Studies

Software Projects

View All Work