Codexworker

Technical Debt Audit for Backend Systems

You inherited a backend nobody wants to touch: dependencies are old, tests are missing, and every change is risky. I audit the actual debt and give you a prioritized plan to pay it down safely.

I'm a backend developer with 10+ years of experience across PHP, Go, MySQL and Elasticsearch. Recent work includes Cenoskop (30M+ products daily), Niftycent (US price intelligence), and facha.sk (Go backend). I build, fix and optimize backend systems that handle real data and real traffic.

What I Can Help With

Assess technical debt in an existing backend.

Typical Problems

outdated dependencies missing test coverage spaghetti/refactored code fragile deployments mixed responsibilities no onboarding docs

Relevant Experience

Audited PHP and Go backends for Cenoskop and AnalyticsForWebsite — found dependency risks, missing test coverage, and deployment fragility. Produced prioritized remediation plans.

What Is Included

dependency and version audit
code quality review
test coverage review
deployment review
prioritized remediation plan

How It Works

I review the codebase, dependencies and CI/deployment with read-only access, and return a written report ranked by risk. Fixed price €499.

Fixed price €499

Audit and a written report. Implementation of recommendations is quoted separately.

Frequently Asked Questions

Do you change anything during the audit?

No — read-only access only. You get a report you can act on.

Related Services

Other problems I help with.

Senior Backend Consulting

Architecture review, code review and problem-solving consulting.

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Modernize Your Legacy PHP Application

Gradually modernize a legacy PHP application.

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Backend Performance Audit

Find and prioritize the real bottlenecks across your full backend stack.

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Systems I've Built

Relevant production work.

Traffic Analysis

AnalyticsForWebsite

Custom solution for collecting and evaluating traffic metrics with emphasis on processing speed and minimizing backend load.

Designed and built the backend for fast traffic metric collection and evaluation.

Performance Optimization Data Collection
Price Intelligence Engine

Cenoskop / Levnobot

Crawler monitoring millions of products. Processing 30M products daily and comparing them.

Built and maintain the full crawling pipeline — from scraping through Elasticsearch indexing to price comparison.

Data Aggregation Scraping ElasticSearch
Secure Communication

Paidshield

Chat application with end-to-end encryption.

Built the backend and encryption layer for a secure chat application.

End-to-End Encryption Real-time Communication Security

Need Help With This?

Describe the problem in a few lines — I'll look at it and tell you what I think.

Request a technical debt audit