I will debug, fix, and optimize backend systems and PHP applications

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John Verheij
debug, fix, and optimize backend systems and PHP applications
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debug, fix, and optimize backend systems and PHP applications

About this gig

I will fix backend systems that are unstable, buggy, or failing under real use.


If your application has:


  • broken integrations
  • sync failures
  • inconsistent data
  • performance issues
  • hard-to-track errors


Ill trace the root cause and fix it properly, focusing on existing systems, not quick hacks. I work carefully to stabilize whats already there and make it safe to run in production.

  • Website type

    • Saas

  • Programming language

    • HTML & CSS
    • JavaScript
    • PHP
    • Other

  • Website features

    • Dashboard
    • User Authentication
    • Admin Panel
    • Other
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Get to know John Verheij

John Verheij

Senior Backend , API Engineer

4.3(1)
  • FromNetherlands
  • Member sinceDec 2023
  • Avg. response time1 hour
  • Last delivery2 months

  • Languages

    English, Dutch, German
Senior backend and API engineer with a strong focus on reliability, clear system design, and long-term maintainability. I build API-first systems in PHP (Symfony, Laravel) and operate them on Linux, preferring boring, predictable solutions that run reliably in production.

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