Seattle web development for software that has to be maintained, not just shipped.

King County employs more than 124,000 people in the information sector, according to the City of Seattle's 2025 financial report, and Amazon is the city's largest property taxpayer. Customers here work alongside some of the most demanding software organizations in the world. They know what a well-run system looks like, and they recognize the signs of one that was launched and abandoned: errors nobody fixes, features that quietly stop working, integrations that break after an update.

So the standard is maintainability. Code that another developer can read. Monitoring that alerts someone when something fails, rather than waiting for a customer to complain. Dependencies kept current. Documentation that explains why, not just what. We still operate several of our own products, including TeamAIOps, so we build with the assumption that we will be the ones fixing it in three years. That assumption changes a great many small decisions for the better.

Washington's tax changes reach some of this work too. The 2025 law that brought custom website development into sales tax also covered a range of IT services, and Seattle reclassified certain service activities as retail for its own business tax in 2026. Ask your accountant how the rules apply to your project; we will describe the work precisely so they can. Custom applications start from $575, depending on complexity, and maintenance plans keep them healthy after launch.