Hello, I’m Karen Nicole Johnson

I’ve returned to the world of software testing - and to writing and speaking. I’m honored to have contributed a chapter in Taking Testing Seriously recently released by Wiley Press. More information about this book can be found on my publications page.

Background

My professions journey in software space a wide range of roles and experiences. I began my career as a technical writer - a great start for someone naturally quiet and observant. From there I discovered a passion for finding software bugs and advocating for better software quality, which led me through a progression of tester, test lead, test manager and consultant.

For nine years, I worked as an independent consultant, choosing projects that challenged and inspired me. Later, I returned to corporate leadership roles, serving as Director of Quality and Director of Engineering. After the pandemic, I took a sabbatical to reset and reshape my professional path.

Speaking and Mentorship

Through my career, I also stepped into the world of public speaking — something that once felt far outside my comfort zone. With the encouragement and coaching of my colleague, James Bach and several other colleagues, I transitioned from an unsure presenter to an international keynote speaker and tutorial instructor at tech conferences. James’s recent invitation to contribute to his latest book played a meaningful part in my return to the testing community.

Today

I’ve come back to where it all began — hands on keyboard, exploring, testing, and uncovering insights that make software stronger. Right now, I’m focused on the craft itself: thoughtful, hands-on testing.

In time, I expect to share more through writing and speaking again. For now, I’m right where I want to be — back in the work I love.

Notes from a Software Tester is a reference site for my work in software testing.

I’ve spent my career testing software across a range of domains, including complex and high-risk systems. Over time, I’ve learned that effective testing depends less on tools and prescribed processes, and more on how we think: how we observe, question, learn, and adapt as systems and contexts change.

This site serves as a base for selected work, background, and publications. My ongoing writing and reflections will be posted on Substack soon.

I’ve contributed chapters to industry books, published articles over many years, and participated in the testing community in different ways.

The focus throughout is on testing as a practice—grounded in learning, judgment, and careful attention to how software is actually used.

The Tester’s Notebook

A working notebook on software testing — notes on thinking, learning, and returning to the practice of testing.