Custom Software Development in Seattle

What we build
Custom software here means signed-in systems and the integrations that feed them — not a brochure site and not staffing.
Business portals
Private, role-based web apps where clients, staff, or partners log in to work. Seattle web portal development.
Role-based dashboards
Live status, records, and workflows instead of email threads and spreadsheet exports.
API integrations
Connect CRM, billing, and ops tools so data is entered once. See API development, HubSpot, and Twilio.
Who this is for
Operators who need a private portal, not a marketing site and not the City of Seattle permit portal. We build software for companies in Seattle and the Eastside. We do not run Accela or seattle.gov.
Why a Seattle shop
Bellevue-based, same timezone, you work with an expert. Pacific hours, no ticket lottery.
- Bellevue, WA
- Mon–Fri 9am–5pm PT
- (425) 324-3243
- hello@seattle.dev
Proof
Shipped client work, not invented case studies. See the portfolio for Farmers Electric, San Juan Seltzer, and Veristone Capital.
- Farmers Electric — conversion-first service pages so Puget Sound homeowners can schedule or call without hunting.
- San Juan Seltzer — product-led brand site for consumer and trade journeys on one domain.
- Veristone Capital — private capital positioning with a clear path for builders and investors.
FAQ
Do you build custom software for Seattle companies?
Yes. We build custom web portals and integrations for businesses in Seattle and the Eastside, not staffing and not job placement.
What’s the difference between a marketing site and a business portal?
A marketing site is public. A business portal is a signed-in system: clients, staff, or partners log in to dashboards, records, and workflows.
Are you the City of Seattle permit portal?
No. We don’t run Accela or seattle.gov. We build private portals for companies.
How do we start?
Book a time with an expert. We’ll scope the portal or integration and tell you if it’s a fit.
Ready to get started?
Book a time with an expert. We’ll scope the portal or integration and tell you if it’s a fit.
Book a time with an expert