I will write, optimize, and troubleshoot your sql queries

Md Yasin Sumon

Bangladesh

I speak English

FullStack Software Engineer

I am a Full-Stack Software Engineer with 4+ years of professional experience building scalable, secure, and high-performance web applications using Angular, .NET, and Microsoft SQL Server. I am curren...
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About this Gig

Struggling with slow queries or confusing errors? I've got you covered.


I'm a skilled SQL developer with the Top SQL 50 badge on LeetCode and active problem-solving experience across multiple programming platforms. Complex logic is second nature to me.


Professionally, I've built 100+ reports using stored procedures, functions, and views within ERP systems from financial summaries to operational dashboards.


What I can help with:

  • Writing queries from scratch (JOINs, subqueries, CTEs, window functions)
  • Optimizing slow-running queries
  • Debugging and fixing broken queries
  • Refactoring SQL for readability and efficiency
  • Building stored procedures, functions, and views
  • Creating complex reports for ERP and business systems


Databases: MySQL, PostgreSQL, SQL Server


What I need from you:

  • What you're trying to achieve
  • Table structure (DDL, ERD, or screenshots)
  • Sample data or expected output
  • Your database platform


Why me?

  • LeetCode Top SQL 50 badge
  • 100+ production reports in ERP environments
  • Clean, well-commented code
  • Fast turnaround with revisions until you're satisfied


Send me a message let's get your data working for you!

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write, optimize, and troubleshoot your sql queries
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write, optimize, and troubleshoot your sql queries

Expertise:

Configuration

•

Database design

•

Performance monitoring

+1 more

Database type:

Relational database

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