I will fix slow sql queries and optimize mysql databases

Ollie K

United Kingdom

I speak English

65 orders completed

Backend Developer PHP, APIs, Databases and Integrations

I am a Full Stack Developer with 8+ years of experience in PHP, Java, and React. I build custom web applications, REST APIs, CRM/CMS systems, and scalable backend services. I specialise in database de...
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About this Gig

Are you struggling with slow, broken, or complex SQL queries?

I will help you fix, write, or optimise SQL queries so your database runs efficiently and returns accurate results.

With 8+ years of backend development experience, I specialise in writing clean, efficient, and scalable database logic.


What I can do for you:

  • Fix broken SQL queries (SELECT, INSERT, UPDATE, DELETE)
  • Write complex queries with JOINs, subqueries, and aggregations
  • Optimise slow-performing queries
  • Improve database performance using indexing suggestions
  • Debug MySQL or PostgreSQL query issues
  • Convert business logic into SQL queries

Technologies I work with:

  • MySQL
  • PostgreSQL
  • PDO / PHP database systems
  • Query optimisation techniques

Scope limitations:

  • No full database design projects
  • No full backend/API development
  • Database query work only

Why choose me?

  • Fast turnaround (often same day delivery)
  • Clean, production-ready SQL
  • Clear explanation of fixes
  • Focus on performance + reliability

Packages (suggested)

  • Bronze: 1 SQL query fix or write
  • Silver: multiple queries + optimisation
  • Gold: query review + performance improvements + suggestions
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fix slow sql queries and optimize mysql databases
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