I will fix PHP, java, sql, API and backend issues

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zo0m27
Z
zo0m27
Oleg Caus
fix PHP, java, sql, API and backend issues
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fix PHP, java, sql, API and backend issues

About this gig

I will investigate and fix PHP, SQL, database, API, and backend issues in your web application. I can help with broken forms, database errors, CRUD problems, authentication issues, incorrect queries, server-side logic, and small feature fixes. Each issue is reviewed, tested, and resolved with clean, maintainable code. Please contact me before ordering and provide the error message, project details, expected behavior, and relevant files or access.

  • Programming language

    • PHP

  • Expertise

    • Debugging
    • Performance
    • Databases
    • Source control
    • Testing procedures

  • Frontend framework

    • Other

  • Backend framework

    • Other

Get to know Oleg Caus

Oleg Caus

Backend Developer, Web Scraping, Automation, SQL, JAVA, PHP

  • FromMoldova
  • Member sinceJul 2026
  • Avg. response time1 hour

  • Languages

    Russian, Italian, English, Romanian
I build backend systems, automation workflows, web scrapers, and custom business tools. I can develop API integrations, admin dashboards, booking and order management systems, data collection pipelines, and database-driven applications. I also help automate repetitive tasks, clean and transform data, export results to CSV/Excel, and improve existing backend functionality. I work with Java, PHP, SQL, REST APIs, Linux, Git, and relational database architecture, focusing on reliable logic, maintainable code, and practical business results.

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Other Software Development Services I Offer

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