I will write, fix, and optimize sql queries for mysql, postgresql, or sqlite

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Edilson Dengo

About this gig

Need fast, optimized, and reliable SQL solutions? You're in the right place!

Are you struggling with slow queries, database errors, or unoptimized data structures? I will help you write, fix, and fine-tune your relational databases for maximum performance.

Services I Offer:

  • Custom SQL Queries: Complex JOINs, Subqueries, Aggregations & Views
  • Bug Fixing & Debugging: Fast syntax and logic error resolution
  • Performance Optimization: Query refactoring & Indexing for speed
  • Database Schema Design: Clean ERD & Normalization structure
  • Data Migration: Convert CSV/Excel datasets into clean SQL tables
  • Automation: Stored Procedures, Functions, & Triggers

Databases Supported:

  • ️ MySQL
  • PostgreSQL
  • SQLite
  • ️ Microsoft SQL Server

Why Work With Me?

  • Fast & Efficient Delivery: Clean, well-commented code
  • Accuracy First: Tested scripts ready for production
  • Clear Communication: Active updates throughout the process
  • 100% Client Satisfaction Guaranteed

Ready to optimize your database? Please send me a message with your project details before placing an order so we can select the perfect package for your needs!

Get to know Edilson Dengo

Edilson Dengo

SQL Developer, Database Optimization Specialist

  • FromMozambique
  • Member sinceJun 2023
  • Avg. response time1 hour
  • Languages

    English, Portuguese
Full-Stack & Database Developer with 3+ years of experience in React, Next.js, PostgreSQL/SQL, and Node.js. Specializing in high-performance SaaS applications, multi-tenant database modeling, and modern corporate web platforms. Expert in SQL query optimization, RESTful APIs, and building responsive UIs with Tailwind CSS and TypeScript. From order management systems to enterprise portals deployed on Vercel, I deliver scalable, production-ready web solutions with precision. Let’s collaborate to bring your ideas to life!

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