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Codebase Modernization

Codebase Modernization Without Pausing Your Roadmap

We tidy AI-assisted code that has drifted, and use AI tools to modernise old code faster. Engineers review every change, and tests cover it, so your team keeps shipping features while the codebase gets healthier.

  • 10+Years in production code
  • PHP · JSLaravel, Yii and mobile apps too
  • SmallReversible changes, one at a time
Two Jobs, One Method

Two kinds of code we modernise

Whether the code was written last quarter with AI help or ten years ago by hand, the method is the same: measure, protect, change in small steps.

  • Job A: AI-assisted code that drifted

    Months of Copilot and Cursor commits leave three ways to do the same thing, copied helpers and patterns nobody chose.

    • Three versions of the same helper
    • Patterns that change from file to file
    • Code nobody on the team can explain
    Often written with
    • GitHub Copilot
    • Cursor
    • Claude Code
  • Job B: Legacy code, modernised with AI help

    Old PHP, Laravel, Yii, AngularJS and jQuery code upgraded faster, because AI drafts the repetitive changes and engineers check them.

    • Framework versions past end of life
    • Upgrades put off for years
    • Libraries nobody dares to update
Signs Worth Measuring

If these sound familiar, the code is costing you

Each sign has a number behind it. We measure it at the start, so you can see it move the right way.

  • Releases get rolled back more often

    Fixes break something else, so every release carries risk.

    We measureChange failure rate

  • Reviews take days

    Pull requests wait because nobody is sure what a change touches.

    We measurePull request review time

  • The same bug lives in several files

    One fix has to be made again in every copy of the code.

    We measureDuplication

  • Tests miss the parts that earn money

    Checkout, billing and sign-up can break without a test failing.

    We measureCoverage on key flows

  • Builds and deploys crawl

    Every change waits on a slow pipeline, so the team ships less often.

    We measurePipeline time

  • New developers need weeks to be useful

    The code only makes sense to the people who wrote it.

    We measureTime to first merged change

Our Method

Five steps, and every change proves itself

Nothing merges on trust. Each pull request passes the same four gates before it reaches your main branch.

  1. About 1 week (typical, to be confirmed)

    Baseline

    Map the code and measure the signals above, so progress has a starting line.

  2. Before any change

    Safety net

    Tests that pin down how the code behaves today, so a change that alters it fails at once.

  3. Sprint by sprint

    Small, reversible changes

    AI drafts, engineers review. Feature flags guard risky parts, and big parts are replaced piece by piece (the strangler pattern).

  4. On every pull request

    Verify every change

    Tests, static analysis, a security scan and a performance check before anything merges.

  5. At the end

    Guardrails and handover

    Lint rules, architecture notes, AI coding rules and CI gates, so the code stays clean after we step back.

Dashed items are typical, and confirmed for your codebase in the assessment.

Start with a baseline. An assessment tells you where refactoring pays, and what it would cost, before any code changes.

Request a Refactoring Assessment
AI and Engineers

What AI does, what engineers decide

AI takes the repetitive work. Every decision that matters stays with a person who answers for it.

AI does

  • Drafts repetitive changes
  • Writes first-pass tests
  • Explains unfamiliar code
  • Finds duplicated logic
  • Updates old syntax

Engineers decide

  • The architecture
  • Business rules
  • Security
  • What gets deleted
  • Final approval of every change

“AI makes us faster. It doesn’t make the decisions.”

An Honest Answer

Refactor, rewrite or leave it?

Not every codebase needs us. Answer three questions for a first view, or read the whole table.

Is a hard deadline close?
Is the core data model sound?
Do tests cover the flows that earn money?

Answer the three questions to see which column fits.

Which approach fits each situation
Your situationRefactorImprove it in place, one small change at a time.Rewrite part of itReplace the part that holds everything back.Leave it aloneSometimes the best change is none, for now.We’ll tell you
The product earns money todayFits: Keep it earning while it improvesNo bearing: Only the part that blocks growthFits: If it is stable and rarely changed
The core data model is wrongDoes not fit: Refactoring can’t fix thatFits: Replace that part firstDoes not fit: It will keep costing you
Tests existFits: Safe to start nowFits: They define what the new part must doNo bearing: No bearing
The team knows the domainFits: Their knowledge guides each changeFits: Needed to rebuild it rightNo bearing: No bearing
A hard deadline is nearDoes not fit: Start after the deadlineDoes not fit: Start after the deadlineFits: Ship first, then revisit
What Changes

What changes for your team

The same work, seen from two chairs. Pick yours.

Founders and product owners

What you notice from the product side, without reading a line of code.

  • Fewer rolled-back releases

    Releases fail less often, so customers see fewer bugs.

  • Features land on the dates planned

    Less time lost untangling old code in every sprint.

  • Code that passes due diligence

    Investors and buyers see tests, documentation and current versions.

  • Less reliance on one developer

    Knowledge lives in the code and its notes, not in one person’s head.

Ways to Work With Us

Start with an assessment, then choose the pace

Each step builds on the one before, so the plan you pay for is the plan we work from.

  • Fixed scope

    Assessment

    About 2 weeks, fixed price (typical, to be confirmed)

    Hotspots, metrics and a plan, so you know where refactoring pays before it starts.

    • A map of the codebase
    • The baseline metrics
    • A ranked, estimated plan
    Request an assessment
  • Alongside your team

    Refactoring Sprints

    Sprint by sprint

    We work alongside your developers, in your repo, on the plan from the assessment.

    • Small pull requests your team reviews
    • Tests before each change
    • Progress measured against the baseline
    Plan the sprints
  • Part of your team

    Embedded Engineer

    Monthly

    An engineer who joins your team and keeps the codebase healthy as features ship.

    • Part of your stand-ups and reviews
    • Refactoring alongside feature work
    • Scale up or down each month
    Talk about an engineer
Good to Know

Questions before a refactoring

What CTOs and tech leads ask us first. Anything else, ask in your request.

+91 97123 07570Mon–Fri, 9:30 AM – 7:00 PM IST
Will refactoring slow our feature releases?

Not in a way you will feel. Changes are small and go through your normal review, so feature work carries on. Most teams ship faster within a few sprints, because each change touches less code.

Do you use AI tools on our code, and where does our code go?

Only with your agreement. We use business or zero-retention settings, so your code is not stored or used for training, and we sign an NDA first. If your rules say no AI tools at all, we work without them.

How do you make sure nothing breaks?

Before we change anything, we write tests that pin down how the code behaves today. Every pull request then runs those tests, static analysis and a security scan, and an engineer reviews it. Risky parts go out behind feature flags.

Can you work in our repo with our developers?

Yes, that is how we prefer to work. We open pull requests in your repository, follow your review rules and join your stand-ups, so your team sees every change.

Which languages and frameworks do you refactor?

Mainly PHP, Laravel, Yii, JavaScript and TypeScript, AngularJS, Angular, React and Vue, plus Flutter and React Native mobile apps.

How is this different from AI Prototype Rescue?

AI Prototype Rescue takes an app built with AI tools to its first launch. Codebase Modernization is for a live product that a team keeps shipping, and we work alongside that team.

About AI Prototype Rescue

How will we know the refactoring worked?

The assessment measures the signals first: rollbacks, review time, duplication, test coverage and pipeline time. We measure them again as we go and at the end, and you get a before-and-after report.

Request a Refactoring Assessment

Tell us about the codebase

The stack, its size and what slows your team down is enough to start. We’ll tell you honestly if it’s better left alone.

  1. A reply within one working dayFrom an engineer, not a sales script.
  2. A call about the codebaseStack, size, team and what slows you down.
  3. An assessment proposalScope, the access we need and a timeline.

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