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Hi , I'm Justine.

For the past five years I've worked within SaaS products, first helping customers, then helping shape the product itself.

One More Check isn't an agency. Every Launch Review is carried out personally by me. That is what “Checked by Humans” means.

I started in customer support. It is not where most people expect a product story to begin, but it taught me something I have relied on ever since: users rarely complain about the things product teams expect. They struggle with the tiny behaviours nobody thought about.

Seeing that gap, day after day, naturally led me into product management. Once you have sat with the person who is confused, you can't unsee it. You start designing for the moment things go sideways, not just the demo.

Today my work includes:

  • defining product behaviour
  • UX redesign
  • onboarding
  • business rules
  • testing releases
  • investigating bugs
  • working closely with developers
  • preparing products for beta

Over the years I noticed I was asking the same kind of question, over and over, in every product I touched:

“What happens if…”

What happens if the payment succeeds but the account isn't created? What happens if two people edit the same thing at once? What happens if someone refreshes halfway through? Those questions became the basis of One More Check.

I don't try to make products perfect. I help founders launch with confidence.

Why trust me?

I've seen a product from every side

Most reviews come from one perspective. Mine comes from having worked across the whole path a product problem travels:

This means I don't only see whether something works. I understand why users become confused, how support teams think, how product managers define behaviour and what developers need to implement. That combination is what makes these Launch Reviews valuable.

  1. Customer Support
  2. Product Management
  3. UX
  4. Business Rules
  5. Testing
  6. Beta Releases

How that shows up in your review

  • I look for where people hesitate, not only where code breaks
  • Years in support taught me how confusion actually begins
  • I think in business rules, edge cases and real user behaviour
  • I notice the questions that get harder to ask from inside a product

Before you launch

Let's do one more check.

Give yourself the peace of mind that comes from knowing an experienced pair of eyes has taken one more thoughtful look before your users do.