Ship software your customers can trust.
TopNotch is an AI development, custom software development and QA testing company. We build, test and harden web, mobile and AI products, so your releases go out on time and stay up.
- ✓checkout completes on iOS, Android, web1.8s
- ✓login survives expired session tokens0.9s
- ✓AI assistant declines out-of-scope requests3.2s
- ✓API holds at 2,000 concurrent users41s
- ✓WCAG 2.2 AA accessibility checks6.4s
- ✗password reset email lands in spam2.1sbug QA-118 filed with steps to reproduce
What we do
One team for AI, development and testing, so quality is built in rather than bolted on.
AI Development & Testing
We build LLM features such as assistants, search and automations, and we test them for accuracy, safety and prompt injection, with a human in the loop reviewing what automated checks can't judge.
AI development servicesCustom Software Development
Web apps, mobile apps, APIs and integrations, delivered with automated tests from the first commit.
Software development servicesQA & Test Automation
Manual, exploratory, automated, performance, API and accessibility testing for web and mobile apps, with experienced testers reviewing every result.
QA testing servicesWhy product teams hire us
Testers who read code
Our QA engineers understand your stack, write maintainable automation and file bugs developers can fix on the first try.
Clear scope, clear reporting
You'll know what we're testing, what we found and what it means for your release, in plain language rather than spreadsheets of jargon.
Part of your team
We work inside your Jira, Linear, GitHub and Slack, join your stand-ups, and hand over everything we build.
How an engagement works
Free assessment
A 30-minute call to understand your product, release process and biggest risks.
Test strategy
A written plan covering what to test, what to automate and what success looks like.
Test and automate
We run testing, build automation in your CI pipeline and report bugs as we find them.
Ongoing coverage
Monthly support for every release, or a clean handover to your in-house team.
Results we've delivered
"Our regression cycle went from four days to three hours. We release weekly now, and our support queue is noticeably quieter."
From the blog
Signs it's time to bring in a QA partner
Six warning signs your software testing isn't keeping up, how an outsourced QA partner compares with an in-house hire, and what to ask before you sign.
How to test AI features: a practical QA guide for LLM-powered products
How to test chatbots, copilots and LLM features: evaluation sets, scoring rubrics, prompt injection, hallucinations and regression testing.
Manual vs. automated testing: how to choose the right mix
When to automate a test, when to keep it manual, and a practical framework for building a test strategy that catches bugs without drowning in maintenance.
Tell us what you're shipping next.
Book a free 30-minute assessment. We'll look at your release process, point out the biggest risks, and tell you honestly whether we can help.