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I will improve the performance of ef core sql server queries
Luiz B
About this gig
Is your .NET application running slow? Are API endpoints timing out, or is your SQL Server hitting 100% CPU? Don't let poor performance drive your users away.
As a specialized backend performance engineer, I will pinpoint, isolate, and provide concrete fixes for your latency issues across your entire stack.
️ What I Optimize:
- ASP.NET Core: Async/await fixes, middleware bottlenecks, and payload sizing.
- EF Core: N+1 query problems, untracked queries, and bad LINQ-to-SQL translations.
- SQL Server: Execution plans, missing indexes, deadlocks, and parameter sniffing.
Choose Your Package ($50/hr Value):
- Basic ($100 | 2 hrs): Diagnostic of 1 slow API endpoint/LINQ query + direct action report on the core bottleneck.
- Standard ($250 | 5 hrs): Deep-dive into 5 endpoints, EF Core settings + Web App Audit & Project Plan roadmap.
- Premium ($500 | 10 hrs): Complete Full-Stack Audit, Project Plan, Cost Estimation + 120-min Live Video Consultation to fix code together.
️ IMPORTANT: Every system is unique. Please message me first to discuss your tech stack and symptoms before ordering so we pick the right tier!
Get to know Luiz B
Luiz B
Software Architect
- FromBrazil
- Member sinceAug 2026
Languages
English, Portuguese
I am a Software Architect with extensive experience in .NET technologies, backend development, and system integrations. I specialize in C#, Entity Framework Core, and SQL Server, with a strong background in business class modeling and requirement gathering. Throughout my career, I have led complex projects for major clients in real estate and retail sectors.
FAQ
Do I need to share my entire production database or sensitive client data?
No, never share production data. To analyze SQL Server or EF Core issues, I only need the database schema (tables, indexes, keys) without the actual data. If your issue happens strictly in production and cannot be reproduced elsewhere, we can do an assisted screen-sharing session. I will guide you
What environments and cloud providers do you support?
I support all infrastructure setups, including local servers, on-premise data centers, Microsoft Azure (App Services, Azure SQL), AWS (EC2, RDS), and Google Cloud. As long as it runs ASP.NET Core and SQL Server, I can optimize it.
Can you directly refactor the code and apply the database fixes yourself?
My packages include providing optimized C# code snippets, rewritten LINQ queries, and SQL migration scripts. If you want me to directly modify your repository or apply changes to a live database, please contact me for a custom offer or select the Premium tier.
What happens if the issue requires more hours than the selected package?
If the diagnostic reveals a deeper architectural issue that cannot be solved within the package time block, I will provide a detailed report of my findings so far and a Custom Offer based on my $50/hour rate for the remaining implementation work.
