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Custom software development for service businesses

Plainbuilt is an engineering practice since 2014 with 200+ shipped projects, and we build the systems our AI runs on: web platforms, mobile apps, websites that book jobs, and CRM and CMS integrations for service businesses, in Next.js, React Native, Supabase and Postgres, Node, and Twilio. Every build carries the same written ROI commitment as every AI deployment.

What we build

Web platforms

The system the whole operation works in: jobs, crews, schedule, quotes, customers, on the web and on every device. Built in Next.js on Supabase, Postgres, and Node.

Mobile apps

Field-technician, booking, dispatch, estimating, and owner apps in React Native, wired into the systems you already run.

Websites that book jobs

The site, an AI chatbot that answers from your own content, and quote automation, sold as one package and wired into ServiceTitan or Jobber.

CRM and CMS integrations

Custom ServiceTitan, Jobber, and HubSpot integrations, and the link between your site or app and the system that runs the jobs.

The stack we ship in

Next.js, React Native, Supabase/Postgres, Node, Twilio

How a build runs

  1. 1

    Discovery

    We start with the operation, not the software: what runs through spreadsheets, group texts, and one person's memory today. The 30-minute working session opens it.

  2. 2

    Spec

    We write down what gets built, what it is wired into, and the number the written ROI commitment measures. The spec is the build plan.

  3. 3

    Build

    We build in Next.js, React Native, Supabase and Postgres, Node, and Twilio, against the real systems you already run.

  4. 4

    Ship

    The software ships into your live operation and runs with real traffic and the people who will use it.

  5. 5

    Support

    We keep it running after it ships: fixes, updates, and the next features when you want them.

Proof

Details to follow

Proof of work

The agents and automations are what we deploy. Behind them are 41 apps and websites Plainbuilt designed and built full stack: the proof that the software side is in-house too.

See all 41

Common questions

What does Plainbuilt build?

Four things: web platforms, mobile apps, websites that book jobs for service businesses, and CRM and CMS integrations. The same engineering practice has shipped 200+ projects since 2014, and it builds the systems our own AI runs on.

What is it built in?

Next.js for the web, React Native for mobile, Supabase and Postgres for the data, Node for the services behind it, and Twilio for calls and texts. One stack, the one we ship everything in, wired into whatever your operation already runs on.

How does a build run?

Five steps: discovery, spec, build, ship, support. The 30-minute working session opens discovery. The spec that follows is the build plan: what gets built, what it is wired into, and the number the written ROI commitment measures. Then we build, ship into your live operation, and keep it running.

Does the written ROI commitment apply to custom software?

Yes. Every deployment carries a written ROI commitment, and a custom build is a deployment. The spec names the number the software is built to move, and that number is what we measure after it ships.