Stu Mason
Stu Mason
Problem Solver

Add Features to Legacy Code

You need new features but the codebase is scary. Nobody wants to touch it. One wrong change and everything breaks.

Typical timeline: Varies by feature scope
47+
Projects Rescued
16+
Years Experience
<2hrs
Avg Response Time
98%
Success Rate

Sound Familiar?

Developers refuse to work on the codebase

Simple changes break unrelated features

No tests, no documentation

Original developers long gone

Business needs new features urgently

How I Can Help

Careful analysis of existing code

Add tests around areas to change

Make changes safely with minimal impact

Document as we go

Gradually improve code quality

Legacy code doesn't have to be scary. It's just code that works but isn't well understood. The trick is making changes safely.

I add characterization tests first - tests that capture what the code currently does, right or wrong. Then changes can be made with confidence.

New features get added with minimal touching of existing code. Over time, the codebase improves. But the priority is always: ship the feature, don't break existing stuff.

You get your features and gradually improved code quality. No big bang rewrites, no risky changes.

Why I'm the Right Choice

Fast Diagnosis

I've seen most problems before. Quick assessment, clear plan, fast execution.

Proven Track Record

47+ rescue projects completed. I know what works and what doesn't.

Root Cause Fix

Not just patches. I fix the underlying issues so they don't come back.

Clear Communication

You'll know what's happening, what it costs, and when it'll be done.

Frequently Asked Questions

What causes developers refuse to work on the codebase?

This is a common issue I see in projects that need add features to legacy code. Careful analysis of existing code

What causes simple changes break unrelated features?

This is a common issue I see in projects that need add features to legacy code. Careful analysis of existing code

What causes no tests, no documentation?

This is a common issue I see in projects that need add features to legacy code. Careful analysis of existing code

What causes original developers long gone?

This is a common issue I see in projects that need add features to legacy code. Careful analysis of existing code

What causes business needs new features urgently?

This is a common issue I see in projects that need add features to legacy code. Careful analysis of existing code

How do you careful analysis of existing code?

Careful analysis of existing code This is part of my standard approach to add features to legacy code, refined over 16+ years of experience.

How do you add tests around areas to change?

Add tests around areas to change This is part of my standard approach to add features to legacy code, refined over 16+ years of experience.

How long does add features to legacy code take?

Typical timeline is Varies by feature scope. Every project is different, but I'll give you a clear estimate after an initial assessment.

What does the process look like?

Initial call to understand the problem. Quick assessment and clear plan. Weekly demos as we fix things. Direct communication throughout — no project managers in the way.

What Clients Say

"Stu delivers. Quick turnaround, high quality, no fuss. He embeds into the team properly - standups, Teams, the lot - and he's been ahead of the curve on AI tooling, both in the apps we build and in how he works. Reliable, fast, and genuinely good to work with."

Ravi P.
Ravi P.
Product Owner,

"Brought Stu in to review our AI tooling stack. He did a proper deep dive, gave us a clear plan, and containerised everything so devs could run it locally. Exactly the kind of practical, no-bullshit assessment we needed."

Elliot T.
Elliot T.
Dev Lead, Patch

"One of the things most organisations struggle with is finding that 'bridge' type of resource — someone who can speak product, understand the business, and shape the technical flow for today while keeping an eye firmly on tomorrow. Stu, on multiple occasions where I've hired him over the last 15 years, has been that guy. His consultative skills — listening, challenging back, and shaping technical solutions around what he hears — are second to none. His time management and expectation-setting are spot on too. He'll tell you where the risks are in the new and the unknown, so you're never left biting your nails in the dark. He lives and breathes tech, early-adopts just for the hell of it, but never oversells anything until it's genuinely safe and ready to use."

Rob Sherali
Rob Sherali
Technical Delivery, Sepura

Ready to Fix This?

Let's get your project back on track.