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Jair Carranza

@jaircarranza

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Senior .NET backend engineer focused on scalable REST APIs, secure integration, and high-performance SQL Server.

Colombia

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What I'm looking for

I’m looking for a senior .NET backend role where I can build secure, scalable REST APIs and microservices, optimize SQL Server performance, and deliver faster releases through Azure and CI/CD—while mentoring teams and driving quality.

I’m a Senior .NET Software Engineer with 10+ years of experience designing and delivering scalable enterprise applications across education, financial, and technology sectors. I specialize in backend development with .NET (Framework, Core, and .NET), building secure RESTful APIs and microservices.

I’ve consistently improved performance and reliability by optimizing SQL Server stored procedures and Entity Framework queries, and by implementing CI/CD pipelines and Azure cloud solutions to accelerate deployments. I’ve also led code reviews and mentoring to raise development standards, while integrating multiple enterprise APIs and external platforms for automated infrastructure provisioning.

Experience

Work history, roles, and key accomplishments

Current

Senior Backend Engineer

Current

GlobalLogic

Sep 2021 - Present (4 years 7 months)

Built and maintained secure .NET Web APIs using JWT authentication and optimized SQL Server stored procedures and Entity Framework queries to improve API performance. Developed serverless Azure Functions solutions, integrated external APIs, and led code reviews while implementing CI/CD pipelines in Azure DevOps.

C#.NET ASP.NET Core JWT REST APIs SQL Server Entity Framework Azure Functions Azure DevOps Code Review

.NET Developer

Globant

Mar 2021 - Sep 2021 (6 months)

Migrated Web APIs from .NET Framework to .NET Core, refactoring legacy services to improve performance and maintainability. Developed and maintained unit tests and integrated internal and external APIs.

C#.NET Core .NET Framework Web APIs SQL Server Unit Testing API Integration Integration Testing

Full Stack Developer

IFX Networks

Mar 2020 - Mar 2021 (1 year)

Developed backend services in C# and .NET and built Web APIs integrating VMware APIs for VM provisioning. Contributed to Angular frontend components, optimized SQL Server/T-SQL queries, and implemented CI/CD pipelines using Azure DevOps.

C#.NET Angular REST APIs SQL Server T SQL Entity Framework Azure DevOps Web APIs

.NET Backend Developer

ProCredit Bank

May 2015 - Mar 2020 (4 years 10 months)

Developed ASP.NET applications for loan lifecycle management and integrated external systems using SOAP services. Optimized T-SQL stored procedures and queries, built SSRS reports, and managed testing environments and deployments.

C#ASP.NET SQL Server T SQL API Integration