Edgerunners

Legacy Modernization

Make the system nobody wants to touch safe to change again

We find the risks in your legacy backend, fix the urgent ones first, and rebuild the rest one piece at a time while the business keeps running.

The first thing we check is whether secrets or environment files are exposed. Most teams want to know that today.

Sound familiar?

  • 01

    The original developers left and took the knowledge with them.

  • 02

    Configuration, URLs, and credentials are hardcoded throughout the codebase.

  • 03

    Environment files with secrets are publicly accessible or committed to the repository.

  • 04

    Dependencies are years out of date, and some have known vulnerabilities.

  • 05

    Every small change takes days because nobody knows what else it might break.

  • 06

    You've been told the only option is a full rewrite, and you can't afford to stop for a year.

The cost of waiting

The risk you're carrying right now

An exposed environment file or hardcoded credential is a breach waiting for someone to look. An outdated dependency with a known vulnerability is public information. Each month a legacy system goes untouched, the security risk grows, and so does the cost of every change.

Our approach

How we approach it

1. Audit

We review security, code quality, dependencies, infrastructure, and documentation. You get a report that ranks every issue by risk and by cost to fix.

2. Fix the urgent issues first

We start with exposed environment variables and secrets, hardcoded credentials, vulnerable dependencies, and missing access controls. These fixes are usually quick, and they remove the largest risks.

3. Modernize step by step

Full rewrites are expensive and often fail. We document what exists, add tests around the parts we're about to change, and then refactor or rebuild one module at a time while the old system keeps running. Each step lowers development and maintenance costs, and the system becomes more stable as we go.

We can advise your team, work alongside them, or take over parts of the work. In every case, your team ends up understanding the new system.

Before and after

Before: Secrets in the code and in public files
After: Secrets in a managed vault, rotated
Before: Nobody knows what a change will break
After: Tests around critical paths catch breakage before release
Before: Knowledge left with the last developer
After: Documented behavior and architecture
Before: "We need a full rewrite"
After: A module-by-module roadmap with costs for each step

Deliverables

What you get

  • A security and code audit report, ranked by risk
  • Fixes for exposed secrets and hardcoded configuration
  • Documentation of how the existing system behaves
  • Tests around critical paths
  • A step-by-step modernization roadmap with costs

FAQ

Questions teams ask before hiring us

01Do we have to stop new feature work?

No. We modernize in small steps, and feature work continues alongside.

02What if the audit shows a rewrite is the right answer?

Then we'll say so, with the reasoning and the cost compared to step-by-step modernization. You decide.

Next step

Inherited a system nobody wants to touch?

Start with a risk audit. You'll know what's exposed and what to fix first.