Debugging & Performance Optimization

Your application stabilized, optimized and thoroughly tested

Category: Web and mobile development
Model: open, installed on your premises
Data: never leaves
Subscription: €0 per month

01Overview

A slow or buggy application costs customers. 53% of users abandon a mobile site that takes more than 3 seconds to load. Recurring bugs destroy trust. And accumulated technical debt slows every new feature. Wikolabs intervenes as a high-level firefighting team: we diagnose, fix and thoroughly test, then deliver a stabilized codebase with non-regression tests.

The problem

Hard-to-reproduce bugs mobilize teams for days. Memory leaks gradually degrade production performance. Red Core Web Vitals penalize SEO. And without automated tests, every deployment is a risk.

Our answer

We conduct a complete technical audit (frontend profiling with Lighthouse + React DevTools, backend profiling with py-spy or APM, memory leak analysis). Each issue is documented, prioritized and fixed. Automated tests (Playwright, Vitest, pytest) are added for each fix to guarantee non-regression.

02How it works

Live in four steps.

01
Complete audit & profiling
Lighthouse audit, React DevTools profiling, network request analysis, memory leak identification and N+1 query detection.
02
Fix prioritization
Issue ranking by business impact (crash > performance > UX > aesthetics). Correction roadmap in 2 sprints.
03
Targeted fixes & refactoring
Bug fixing, slow component optimization, lazy loading, code splitting, caching, optimized SQL queries.
04
Automated tests & documentation
Addition of unit, integration and E2E tests for each fix. Documentation of patterns to avoid for your team.

03What you gain

Results you can measure.

+40 Lighthouse points on average

Our interventions improve performance scores by 40 points on average on the sites we optimize.

Zero post-fix regressions

Each fix is covered by automated tests. Fixed bugs don't come back at the next release.

Upskilled internal team

We document root causes and patterns to avoid. Your team knows why and how to prevent the same mistakes.

04Frequently asked

What we get asked before signing.

Which languages and frameworks do you work on?

React, Next.js, Vue, Angular on the frontend. Python (FastAPI, Django, Flask), Node.js on the backend. PostgreSQL, MongoDB, Redis for databases.

Can you intervene urgently on a production bug?

Yes. We offer a 4-hour response SLA for critical production-blocking bugs under a support contract.

Can the audit be done without source code access?

The Lighthouse and network audit can be done without source code. Full profiling audit requires repository access.

Does performance optimization include the backend?

Yes. The biggest performance gains are often backend-side (slow SQL queries, uncached endpoints, blocking I/O).

Let's talk about your case for thirty minutes.

A conversation to understand your context, volumes and tools. You leave with a scope and an order of magnitude, no commitment.

+261 38 66 261 00 team@wikolabs.com