Stop Breaking Production: ATDD in Legacy Code

Testing legacy code can feel like walking through a minefield. One wrong step, and you’ve introduced a bug that only shows up in production - right after your deployment.

Are you stuck with legacy code? If you:

• Hesitate to change code because you fear breaking something

• Spent hours debugging a failure in a system you barely understand

• Tried adding automated tests to an old system only to give up in frustration

…then you already know the core problem: testing legacy code is hard.

But here’s the thing - it doesn’t have to be that way.

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Why Teams Struggle With Legacy Code

I’ve spent years coaching teams that ship changes to fragile, business-critical systems. Most of those teams avoided changing code in certain areas because “it’s too risky.” They also relied on Manual QA to verify those “risky“ changes.

They didn’t trust automated tests. The irony? That’s exactly where tests are most needed.

Over the years, I’ve developed and refined a safe, incremental approach to Acceptance Test-Driven Development (ATDD) for legacy systems - one that can improve quality without slowing delivery.

This helps engineering teams to escape legacy code, even in high-pressure environments.

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What You’ll Learn

In this free live Lightning Lesson, I’ll show you:

• Why Unit Tests & E2E Tests don't protect us in production

  Discover why many test automation initatives fail in reducing regression bugs

• Implement User Stories without breaking functionality

  Deliver new business features while preserving the stability of existing workflows

• Fix Bugs without causing new Regression Bugs

  Resolve defects in a way that prevents regressions and unintended side effects

• Redesign the UX/UI whilst whilst keeping the system working

  Refresh the user interface and experience without disrupting core system behavior

• Modernize your System Architecture & Tech Stack safely

  Upgrade legacy architecture incrementally while ensuring ongoing reliability and business continuity

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Event Details

📅 Date & Time: Wed, Sep 17, 2025 5:00PM
📍 Where: Live on Maven (online)
💰 Cost: Free

🔗 Register here: Stop Breaking Production: ATDD in Legacy Code

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Who Should Join

This lesson is for Engineering Managers, Tech Leads & Senior Software Engineers working with legacy systems who want to improve quality without introducing new risks. Whether you’re new to ATDD or looking for ways to apply it in challenging environments, you’ll leave with actionable strategies you can use immediately.

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Meet Your Coach

I’m Valentina - a technical coach and former software engineer who’s spent years helping teams adopt modern quality practices in complex legacy systems. I’ve guided teams to reduce production bugs and accelerate delivery.

I built this Lightning Lesson to give you practical techniques - not abstract theory - so you can finally stop fearing your legacy codebase and start improving it.

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Break Free From Legacy Code

If you want to:

• Ship changes with confidence

• Catch regressions before they cause trouble

• Build tests that actually protect your system

…then I’ll see you in the live session.

📌 Register here: Stop Breaking Production: ATDD in Legacy Code