I design and ship websites, software, games, and SaaS, build the private backend systems companies run on, and wire AI into all of it. End to end, one person, from the database to the last pixel.
Selected work
Live sites for local service businesses, each one hand-coded, fast on a phone, and built to turn a Google search into a phone call. That is how I approach web design in Santa Clarita.
A 24/7 leak detection company serving Santa Clarita and all of LA County. Tap-to-call in the header and hero, separate residential and commercial pages, and their Google reviews right at the top.
Permanent, landscape, and interior lighting across Southern California. Built around the free-quote request, with a project gallery that does the selling.
Windows, roofs, gutters, solar panels, and concrete for homes and businesses in LA County. One clear path on every page: get a free estimate.
A Santa Clarita home services company with pages for each service, the neighborhoods it covers, and upfront pricing, plus a separate entry point for vendors.
The same hand-coded approach goes into internal tools, private backend systems, and full SaaS products, including Stager Tech, an AI home staging platform I founded.
What I build
Most projects don't fit in one box. Because it's all built by the same hands — front end, back end, AI, and everything between — the pieces fit.
Flagship / Private backend systems
The part users never see and can't live without: APIs, databases, authentication, integrations, and the server-side logic that powers your apps and internal operations. Designed for reliability, built to scale, and kept out of sight — where it belongs.
Private backend systems →Marketing sites, landing pages, and portfolios built by hand — quick to load, easy to read, and simple for you to update later.
Website development →Desktop and business apps, internal tools, and automations that take a tedious manual process and turn it into a button.
Software development →Small, focused games and interactive experiences — mechanics first, built to feel good in the hand from the first prototype.
Game development →Full web products with accounts, billing, and a dashboard — taken from a sketch to something real people can log into and pay for.
SaaS development →Now offering / AI integration
Practical AI baked into your website, software, and products — chat assistants that answer your customers, automations that draft, sort, and summarize, smart search, and tools that turn your data into decisions. Not AI for its own sake — AI that does real work.
AI integration →Why build custom
Builders like Wix hand everyone the same templates on the same crowded platform — so your site looks and loads like everyone else's, and it's hard to stand out or climb in search. Built by hand, your site is lean, fast, and made only for you — so you rise instead of getting buried.
A template buildere.g. Wix
Built by PetersenSoftwaresHand-coded for you
Get found
A site only works if people reach it. I build yours so search engines can read it clearly and rank it — and so AI assistants like ChatGPT can understand your business and recommend it when someone asks.
Illustration of the goal. Clean markup and structured data help AI answer engines find and recommend your business.
Fast load times, clean semantic HTML, proper titles and meta, structured data, and a sitemap — the groundwork that helps you climb search results instead of getting buried on page ten. How to show up on Google.
As people ask ChatGPT and other AI assistants for recommendations, structured, machine-readable content gives them a clear answer about who you are and what you do — so your business is one they can surface.
About
I'm Gavin Petersen, a web and software developer in Santa Clarita and the person behind PetersenSoftwares. I build everything myself, from the first sketch to the last line of code.
No handoffs, no account managers, and no pieces that don't fit. Whether it's a website, a business tool, a game, or a full SaaS product, you work directly with the person building it, and you own what gets built. I care about work that loads fast, reads clearly, and actually gets found, and I'll give you a straight answer instead of a sales pitch.
Start a project
Tell me what you're trying to make — a website, a backend system, an internal tool, a game, or a full product. Send a note right here, or call.
No forms, no gatekeeping. Send a note and let's talk through the idea.
Email me Prefer to call? 661-544-5621