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Chainweb provides rapid bug fixing and expert code review to stabilise your web or mobile app and get you back to shipping.
Most teams call us when something is already on fire. We are used to it.
Production issue
Something broken right now?
Send us your issue list or repository access. You get a same-day triage and an action plan within 24-48 hours.
Three ways in, depending on how urgent it is.
Urgent production issues
Something is broken in production and it cannot wait for a sprint.
- Hourly rate or fixed price per issue
- Fast start, no long-term commitment
- Triage the same day you send it
Stabilization sprint
The same issues keep coming back and nobody has time to find out why.
- Fixed scope, agreed before we start
- Weekly progress you can check, not a report at the end
- Ends with a codebase your team can work in again
Ongoing support
A live product that ships regularly and needs someone accountable when it breaks.
- Monthly retainer or hourly allocation
- Agreed response times, out of hours if needed
- We stay familiar with your codebase instead of relearning it
Find the one that sounds like your week.
"Users can't check out and we are losing sales every hour."
Critical bug fixing
We investigate and fix the bugs that cost you users or money, starting with the one bleeding right now.
Root cause explained, fix as a clean pull request, steps to verify it yourself.
"Everything got slow and nobody knows when it started."
Performance & stability
We measure before we touch anything, so you find out what is actually slow instead of guessing.
Before and after metrics, so the improvement is measurable rather than felt.
"Nobody on the team wants to touch that part of the code."
Code review & refactoring
We audit the codebase and turn the scary parts into something your team can work in again.
A refactor roadmap ranked by risk and effort, and the option for us to implement it.
"We fix one thing and two others break."
Regression protection
We add tests exactly where they stop that from happening, not everywhere for the sake of coverage.
The same bug not coming back three weeks later.
"We built it with Lovable or Cursor. It worked in the demo, now it breaks with real users."
AI-built app rescue
We audit what the AI generated, close the security holes and make it hold up with real users.
A codebase you can grow, or an honest answer that a rebuild is cheaper.
How we work
Agentic engineering, not vibe coding.
You get AI speed without a codebase nobody understands.
Why Chainweb for Bug Fixing and Code Review
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Agentic engineering, not guesswork
AI agents help us read, test and fix code faster. Our engineers, with 7–10+ years of production experience, check every change before it reaches production, and you get the explanation, not just the patch. -
Fast turnaround with clear communication
We respond quickly and keep you informed at every step. Initial response within 1–3 business hours, clear status updates, and no silent periods where you’re left guessing what’s happening. -
Security-aware fixes (OWASP/NIST mindset)
Every fix is reviewed through a security lens.
We follow OWASP and NIST best practices to avoid introducing new vulnerabilities while resolving existing issues, especially in auth, data handling, and APIs. -
We leave your codebase better than we found it
We don’t just fix bugs, we improve maintainability. Cleaner logic, safer patterns, clearer structure, and documentation where it matters, so future changes become easier instead of riskier.
What Clients Say About Our Bug Fixing & Code Review
If I had any questions or needs, they always provided the support needed.
Quality and Testing Projects
Real projects from our portfolio.
Finverse: an AI agent for QA
An AI agent that runs unit, API and regression tests on a fintech platform.
Read the case →NordiskRegnskab: database migration
Moving an accounting platform from a single server to a distributed cloud.
Read the case →Cybersecurity assessment
A security assessment for a green energy company.
Read the case →Pricing
Bug Fixing & Code Review Pricing
Find out what is wrong, fix it in a short sprint, then keep it stable. The price depends on the size of the code and how urgent the problem is.
Code review
You want an honest look at the code before you invest more.
€490–1,500
Depends on the size of the code
- ✓Review of code, architecture and security
- ✓Report with priorities in plain language
- ✓Call to walk you through the results
Bug fixing sprint
Bugs and slow screens are hurting your users now.
€900–3,000
Depends on the number of issues
- ✓Fixes for the most important bugs
- ✓Speed and stability improvements
- ✓Tests so the bugs do not come back
Support
Keep the product stable after the fixes.
from€390/month
Depends on the size of the product
- ✓Monitoring and quick fixes
- ✓Dependency and security updates
- ✓Monthly check of code quality
Exact price in writing before any work starts.
FAQ
Bug Fixing and Code Review FAQ
Bug Fixing & Code Review
Not Sure Which Service Fits?
Fix what you have, protect it, or build what comes next.
Your team is probably already using AI to write and fix code. The question is not whether to use it. It is what it is allowed to touch, and who is responsible when it gets something wrong.
An agent that knows your architecture and conventions, handling recurring fixes, tests, logging and dependency updates. Not a generic assistant guessing at your code.
It cannot merge without a human, touch payments or auth unreviewed, read your secrets, or follow instructions hidden in an issue comment.
Your code is covered by an agreement with a company, not the terms of service of a tool someone signed up for. Permissions and prompt injection defence configured properly.
Sometimes the bug is the symptom, not the problem.
Was that bug actually a vulnerability?
Penetration testing and security assessment, from €900, to find what else is exposed.
Learn more →Cheaper to rebuild than to keep patching?
When a module costs more to maintain than to replace, we tell you and we build the replacement.
Learn more →The problem is manual work, not code?
Some bugs are people copying data between systems. That gets automated, not debugged.
Learn more →Let’s Fix Your Code
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