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I will upgrade legacy net and sql backends to modern architectures
Camilo S
About this gig
Do you need to upgrade your legacy backend systems to modern, scalable architectures?
I am a Senior .NET Backend Developer with 15+ years of experience helping companies transform outdated codebases into efficient, maintainable solutions.
My services include:
Migration from .NET Framework to .NET 6/8/9
Database modernization (SQL Server, PostgreSQL, Oracle)
API refactoring and integration (REST, Kafka, microservices)
Performance tuning and technical debt reduction
CI/CD pipelines with Azure DevOps and Docker
I deliver clean, production-ready solutions that ensure your backend is future-proof and optimized for growth.
Basic $150
Code review of legacy backend
Detailed migration plan (architecture, risks, timeline)
Delivery in 23 days
Standard $450
Partial migration of critical modules/services
Database query optimization + API refactoring
Basic testing included
Delivery in 57 days
Premium $900
Full migration of backend to .NET Core/6/8
Complete API modernization + database integration
Unit testing + technical documentation
Delivery in 1015 days
Get to know Camilo S
Camilo S
- FromColombia
- Member sinceAug 2016
Languages
English, Spanish, French
Senior .NET Backend Developer with over 15 years of experience designing and developing REST APIs, modernizing enterprise applications, and optimizing critical systems in the healthcare, financial, and technology sectors. Specialized in .NET 8/9, SQL Server, Azure Functions, and event‑driven architectures with Apache Kafka. Experienced in leading technology migrations, improving application performance, and collaborating with agile teams to deliver scalable and maintainable solutions.
FAQ
What technologies do you specialize in for backend migration?
I work mainly with .NET Framework → .NET Core, SQL Server, PostgreSQL, MongoDB, REST APIs, Docker, and Azure DevOps.
How do you ensure data integrity during migration?
I use automated testing, backup strategies, and step‑by‑step migration plans to guarantee no data loss.
Can you modernize APIs as part of the migration?
Yes, I refactor legacy APIs into RESTful services and integrate them with modern microservice architectures.
Do you provide documentation after the migration?
Absolutely. Each project includes technical documentation and guidelines for future maintenance.
How long does a full migration usually take?
Depending on system size, typically 10–15 days for complete backend migration.
