Line-of-business apps
Web applications with logins, roles, dashboards, and databases that replace spreadsheets, email threads, and group texts. Usually Vue on the front end and .NET on the back end.
Custom software · Palm Beach County, FL
Custom software development in Palm Beach County built around how your business works.
Windward Logic builds custom software, APIs, and the code that connects your systems, so data moves between the tools you already use instead of being retyped. We're a software studio in Wellington serving West Palm Beach, the rest of Palm Beach County, and remote clients.
What we build
Software that solves a specific problem
We focus on software that solves a specific problem and that your team can actually run. Good fits include automating a manual process, connecting two systems, or replacing a spreadsheet with a real app.
APIs & integrations
Custom APIs and the code that connects your systems, so orders, payments, and records move between tools automatically.
Mobile, wearable & desktop apps
Our own products include a Wear OS and Android app and a native Linux desktop app, alongside several full-stack web platforms.
Business software integrations
Business software integrations that stop the retyping
Most small businesses already have the tools they need. The problem is that the tools don't talk to each other. We write the integrations that move data between them, with the same care we'd give enterprise systems.
Integration work from Carter's career and products
- E-commerce to ERP. At Jelly Belly, the cloud-hosted website connected to on-premise systems over a VPN. Web orders went onto a service bus, were picked up on-premise, and were processed into the local ERP.
- Healthcare APIs. At UnitedHealth Group / Optum, Carter led delivery of the custom OAuth 2.0 / OIDC server that secures Patient Access API traffic for outside apps, and designed how internal backends connect to Optum's enterprise FHIR platform.
- Payments and banking. Our products use Stripe for optional payments and Plaid for optional bank downloads, where bank credentials are entered in Plaid Link, never in the app.
- Integration APIs. Infusion Finance includes a timesheet integration API for importing billable time.
App developer · West Palm Beach
An app developer near West Palm Beach with enterprise experience
Windward Logic was founded by Carter St.Clair, a senior software engineer and former solutions architect with more than 30 years of experience building software. His core stack is .NET, C#, and Vue, and his products also use Rust, Kotlin, TypeScript, PostgreSQL, SQLite, SQL Server, and Docker.
He works architecture-first: designs and layer boundaries are written down before AI-assisted coding starts, and every change is reviewed and covered by tests. That is how one experienced architect can cover the breadth of a full team for businesses that don't have their own engineering staff.
Examples from our own products
- CourtCall: a tournament command center for tennis directors (in development).
- Officials Manager: staffing for USTA and UTR tennis tournaments, with payroll CSV export.
- Infusion Finance: a Quicken-style personal finance app that runs on your own local network.
- RipeLocal: connects homeowners who have unwanted backyard fruit with local people who want to pick it.
- IntervalTrak: a standalone Wear OS interval app with an Android companion.
- Alcedo: a native GTK4/libadwaita mail client for GNOME.
See all of them in Our Products.
Custom software questions
What kinds of custom software do you build?
Web applications, APIs, and integrations for small and mid-size businesses, such as automating a manual process, connecting two systems, or replacing a spreadsheet with a real app. Our own products also include mobile, wearable, and desktop apps.
Can you connect the systems we already use?
Yes. Custom programming and integrations are one of our core services: we write the code that connects your systems, so data moves between the tools you already use instead of being retyped.
Do you work with businesses in West Palm Beach?
Yes. We're based in Wellington and work with businesses across Palm Beach County, including West Palm Beach, Boca Raton, and Jupiter, as well as remote clients.
How much does custom software cost, and how long does it take?
It depends on scope, so we don't publish a price list or quote a timeline before we understand the problem. We start with a short discovery conversation and, if it's a fit, build a small proof of concept at no cost. When we present it, we explain what production would take. If it's valuable, you make an offer for the production build, which is scoped and agreed separately. If not, you owe nothing.
Next step
Have a process that needs real software?
Describe the problem, the tools you use today, and what success would look like. We'll reply to set up a short discovery conversation.