Seattle Dev
Twenty-seven years building software for Seattle businesses

An embedded expert who understands the business

Custom web portals, APIs, and websites for Seattle businesses. We take on a small number of new builds at a time so every project gets focused attention.

How We Help

Common Problems We Solve

The tools change. The pain rarely does: re-entry, missing status, and software that fights the real process. Here is how we help Seattle businesses fix that.

Client portal dashboard on a laptop in a small business office
Custom Web Portal Development
Client, partner, and ops portals with secure login, live status, and CRM integrations: built around your workflow, not a generic template.
  • Role-based client and staff views
  • Live data your whole team can access
  • CRM, billing, and API integrations
  • Mobile-friendly for work anywhere
Portal details
API code and integration architecture on a developer's monitor
Custom API Development Company
USA-based custom API development. Connect CRM, billing, and inventory so data moves once. No CSV glue. Production-grade APIs and integrations.
  • Eliminate duplicate data entry
  • Real-time or scheduled sync by design
  • Secure auth, docs, and monitoring
  • US-based team, national clients
API details
Automated business report on a desk screen
Put Your Routine Work on Autopilot
Free your team from repetitive tasks. We automate the predictable parts of your workflow so people can focus on work that needs judgment.
  • Reports that generate themselves
  • Alerts when something needs attention
  • Overnight data synchronization
  • Workflows tailored to how you work
Automation details
Schedule a free consultation

HubSpot, Twilio, AI, and the rest of the catalog live on all services.

Why businesses call

Proof without the theater

Twenty-seven years shipping software from Bellevue. You work with me, not a rotating bench. Capacity stays small on purpose.

27 yrs
Building software
Bellevue
Seattle-area shop
1:1
Senior partner, not a bench
Few
New builds at a time

Recent Projects

Real client work for businesses like yours.

Farmers Electric homepage with residential electrical hero and service panel

Farmers Electric

Website redesign and local SEO for a third-generation Puget Sound electrician: clearer service pages, conversion-focused CTAs, and search-ready structure.

View project
Veristone Capital homepage with modern home hero and green brand mark overlay

Veristone Capital

Brand website redesign and SEO foundation for a private capital firm: premium positioning, loan-program structure, and conversion paths for builders and investors.

View project
San Juan Seltzer Double Spiked White Peach product hero on brand site

San Juan Seltzer

Website redesign and SEO for San Juan Beverage Company: product-led pages, retail/co-packing journeys, and search-friendly brand architecture.

View project

Common Questions

Straight answers before you book a call.

Do you build custom business portals in Seattle?

Yes. Private, role-based logins, dashboards, and integrations for Puget Sound companies. Business software you own, not a public city site.

What does a project cost, and how long does it take?

Most SMB portals land between $30,000 and $100,000. Simple internal dashboards often ship in 4-6 weeks; client or partner portals usually 8-12. We share an honest range on the first call.

Can you connect HubSpot, Twilio, or the tools we already pay for?

Yes. Integrations are part of the portal, not a second product. CRM, billing, messaging, and internal APIs so the portal is the front door, not another silo.

Tim Mushen, founder of Seattle.dev

I'm Tim. I've spent the last 27 years building custom software for businesses across the Seattle area. When you reach out, you talk to me, not a sales team, and I read every message myself. You'll hear back from me personally within one business day.

Tim Mushen, founder of Seattle.dev

Ready to Fix the Process Software Should Already Handle?

Let us talk through your project over coffee or a video call. Free consultation, no pressure, just practical advice on what is possible.

We take on a small number of new builds at a time so every project gets focused attention.

Call Us

(425) 324-3243

Mon-Fri, 9am-5pm PST

Meet In Person

Bellevue, WA

What You Get in a Free Consultation

System Analysis

We review your current setup and identify integration opportunities together

Custom Recommendations

Practical options based on your goals, timeline, and how your team works

Project Estimate

Clear pricing guidance with no hidden costs or surprises

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Seattle Dev

Custom web development and design for Seattle businesses. We specialize in API integration, custom web portals, and business automation.