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Malik Hamza Shabbir
Engagement

App Rescue & Optimization

I rescue stalled or broken builds and speed up slow apps, for founders who need their product fixed and shipped.

Send your project brief Last updated June 10, 2026
In short

App rescue and optimization is for founders stuck with a broken, slow, or abandoned build. I audit the code, fix what is blocking launch, and tune performance and security. I work in React, Next.js, Node, React Native, and Python, and I am honest when a part is cheaper to rebuild than to patch.

What you get

Code and architecture audit with a written risk and fix list
Fix launch-blocking bugs and finish unfinished features
Performance pass: load time, slow queries, bundle size, Core Web Vitals
Security pass: auth, secrets, dependency and API exposure review
Take over a half-built app from another dev or an AI builder
Stabilize CI, deploys, and environments
Clear handover with notes on what changed and why
An honest patch-versus-rebuild call before any big spend

How I work

  1. 01

    Audit first

    I start by reading the code and running the app, not guessing. You get a written map of what is broken, what is risky, and what it will take to fix.

  2. 02

    Agree the plan

    I send a prioritized fix list with estimates and an honest patch-or-rebuild call. You approve scope and budget before I touch anything.

  3. 03

    Fix and stabilize

    I fix the blocking issues, tidy the risky parts, and make builds and deploys reliable. I keep you updated with short notes as I go.

  4. 04

    Hand back clean

    I hand over the fixed code with notes on what changed and why. You can keep going solo or keep me on a retainer.

Ways to work together

Code audit, 1 week

I review your codebase and infrastructure and send a written report: risks, quick wins, and a prioritized fix plan with estimates. No commitment to build after.

Rescue an AI-builder app, fixed scope

I take over an app built with Lovable, Cursor, or Bolt, untangle the generated code, and get it to a real, maintainable, production state.

Performance tune, 1 to 2 weeks

I profile your app and fix the slow paths: database queries, render bottlenecks, and bundle size, with before and after numbers.

Finish a stalled build

I pick up a half-built product, fill the gaps, and ship it. I start with a short audit so we both know the real scope before I quote.

Tech I use for this

ReactNext.jsTypeScriptNode.jsExpressPythonReact NativePostgreSQLMySQLRedisDockerGitHub Actions

Common questions

Q.How much does it cost to rescue or fix my app?

It usually starts with a fixed-price code audit, often a few hundred dollars up to about $1.5k depending on size. The fix work is quoted from that audit, around $90 to $150 per hour or fixed per scope. You see the full plan and cost before any fix work starts.

Q.Can you take over an app built with Lovable, Cursor, or Bolt?

Yes, I do this often. I untangle the AI-generated code, fix the parts that do not hold up in production, and get it to a clean, maintainable state that you or another developer can keep building on.

Q.What if my app is half-built by another developer?

I can pick it up. I start with a short audit to map what is done, what is missing, and what is risky, so we both know the real scope before I quote. I am honest if a rebuild is cheaper than patching.

Q.How long does a rescue take?

A code audit takes about a week. The fix work depends on what the audit finds, from a few days for blocking bugs to a few weeks for a performance and security pass plus finishing features. I give a timeline with the fix quote.

Q.Do you also improve performance and security?

Yes. I profile load time, slow queries, render bottlenecks, and bundle size, and I review auth, secrets, dependencies, and API exposure. You get before and after numbers on performance and a clear list of security fixes.

Related services

Start your project

Tell me what you are building and I will reply within one business day with next steps. You talk to me, the person writing the code, the whole way through.