Amplitude Design

Portland, Oregon, United States

Web development and custom applications built by one developer since 2002

Kevin Johnson has run Amplitude Design as a one-person operation out of Portland, OR since 2002, taking on web and application projects that range from e-commerce builds to contract work, brochure sites, and custom application development. Clients work directly with Johnson rather than being routed through a larger team, and several have stayed with the company for years, in some cases more than a decade, with some now on a third iteration of their major projects.

Services cover frontend and backend development, systems integration, and both website and landing page design, addressing needs from a simple brochure site to a fully integrated content management system, secure e-commerce platform, web app, or intranet/extranet. Johnson treats design as one part of a broader planning process, with business requirements shaping decisions before visual work begins. Each project gets a detailed review of client requirements, and builds are tested across a range of devices and platforms before launch.

The long client relationships reflect continuity built into how the business runs: the same person handles planning, development, and testing on every job, an arrangement that has held for over 16 years of operation in Portland.

24
YEARS IN BUSINESS
1
SERVICE

Capabilities

Agency details

Team size
1-10 people
Founded
2002 (24 years)

About this agency on Agency List

Amplitude Design holds an Agency List Score of 51 out of 100.

That score is higher than 0% of the 36,920 agencies Agency List has assessed so far.

The Agency List Score measures how well an agency documents its work in public: named clients, quantified outcomes, and whether those outcomes are attributed to the agency rather than to the client.

It does not measure client satisfaction, price, or availability.

How the Agency List Score is measured

Assessment date

Agency List assessed Amplitude Design in September 2026, reading 3 pages published on amplitudedesign.com.

The score reflects what Amplitude Design had published by that date; anything published since has not been read.

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