Custom software your business runs on.

Sembit is an Oregon-based team of senior engineers building web apps, mobile apps, and internal systems, from first idea through launch and long-term support.

Talk to our founders, not a sales rep. Hear back in hours, not days.

Why Sembit?

642

Projects completed

17

Years in business

23.6

Average Years Experience per Employee

Sembit is a 10+ person Portland, Oregon custom web development agency with senior engineers averaging 20+ years of experience. We're full-service: from Figma mockups through cross-platform development and cloud setup, we build, modernize, and maintain the software businesses depend on, working directly with you the whole way.

Endorsed by engineers. Trusted by teams across manufacturing, healthcare, and logistics.

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Full coverage across the software lifecycle.

From first wireframe to long-term support, across every layer of your stack.

Everything we do

Build / Deliver

Web, mobile, SaaS, and line-of-business apps, built and shipped end to end.

Design / Experience

Product and UX design that turns complex workflows into clean, usable software.

  • Enterprise App Design
  • Mobile App Design
  • Product Design
  • Web App Design

Engineering / Automation

Integrations, DevOps, data, and the infrastructure that keeps systems running.

  • AI Business Automation
  • Application Integration
  • Cloud Engineering
  • Data Integration
  • Database Design
  • DevOps Automation
  • IoT
  • SDK Creation
  • System Architecture

Strategy / Insights

Technical strategy, fractional CTO, and analytics to guide smart decisions.

  • AI Strategy
  • BI KPI Dashboards
  • Fractional CTO
  • Security
  • Software Evaluation

Whoever you are, we've got your needs covered.

The right people

A 10+ person Oregon team of senior engineers averaging 20 years of experience.

Direct to the founders

You work with Nathan and Shaun, not a sales rep. Answers in hours, not days.

On time, on budget

Right-sized teams billed to the minute, kept on schedule and under budget.

Built to last

We maintain and modernize what we build, supporting systems for years.

Examples of what we deliver.

A few of the products and systems we've built and continue to support.

All case studies
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Government

CTGR alta

The Confederated Tribes of Grand Ronde partnered with us to create alta, a secure mobile platform designed to deliver important tribal news, events, and documents directly to enrolled members.

12%

Enrolled tribal members downloaded the app

29%

Users engage at least once per week

Read case study
Laboratory

Kashi Phlebotomist App: Streamlining Field Operations End-to-End

Kashi Clinical Laboratories partnered with Sembit to build a custom mobile app with a real-time web and database backend to surface orders, routing and timing, and print labels in the field.

Read case study
AI

Astra SDK: A .NET Client for the Microsoft Stack

DataStax partnered with Sembit to build the official .NET (C#) SDK for Astra DB, matching their TypeScript, Python, and Java clients feature-for-feature and shipping through GitHub and NuGet on an automated release pipeline.

Read case study
Education

MCN: Mobile-First UI Rewrite

Sembit took over maintenance and enhancements for the MCN speech-language pathology training platform, rewrote the UI to be mobile-first, and improved performance, security and accessibility.

Read case study
Lumber

Policy Track: A Compliance Dashboard

Sembit built Policy Track, an at-a-glance compliance web app that flags contractor insurance, license, and certification renewals before they lapse, delivered in 10 weeks on time and on budget.

Read case study
Insurance

Unifying 400 Reports Into One Modern Platform

Sembit unified 400 Crystal Reports and SSRS reports into a single, modern reporting platform with standardized PDF viewing, flexible scheduling, and a smooth path to migrate from Crystal to SSRS.

Read case study

We cover the stack you rely on.

Decades of range across modern and legacy technologies, so we can meet your systems where they are.

All technologies

Our process. Simple, seamless, streamlined.

Learn more
01

Design

We produce high-fidelity mockups of every screen, then a clear cost and schedule estimate.

02

Build

Using an agile approach we code your app, with periodic releases and weekly check-ins.

03

Launch

We handle deployment, app-store setup, cloud configuration, go-live, and ongoing support.

Customer Reviews

What our customers are saying about us

Google, DesignRush, Clutch, GoodFirms, Tech Behemoths, and Yelp

5.0

Average on six
review platforms

Nathan Theophanes and Shaun Davidson

Tell us more about your project. We can help.

Get expert guidance from Nathan Theophanes (President) and Shaun Davidson (VP), not a sales rep. We'll be in touch in hours, not days.