Open to senior .NET backend opportunities

Sammy Lastre Silveira Senior .NET backend engineer for Azure-native systems.

Senior .NET backend developer building reliable cloud systems on Azure. Over 5 years of ownership across APIs, integrations, SQL-heavy workloads, observability, and production delivery.

Connect on LinkedIn Download CV GitHub
Cloud-native .NETDistributed systemsClean architectureProduction reliability

About

Backend engineering for systems that need to stay maintainable.

Senior .NET Backend Developer with over 5 years of hands-on experience designing and building scalable cloud-based backend solutions. Strong focus on C# and .NET Core applications, Azure cloud services, and reliable integrations between systems. I enjoy taking ownership of features end-to-end, contributing to architectural decisions, reviewing code, and keeping production systems stable.

Scalable systems

Azure integrations

End-to-end ownership

Experience

Delivery across cloud platforms, integrations, and data-heavy systems.

Senior Backend Developer

Tarlogic

Nov 2023 - Present

C#.NET CoreASP.NET CoreAzure
  • Designed and built backend services using C#, .NET Core and ASP.NET Core for high-volume microservices and modular monolith applications.
  • Created APIs and connections between internal core systems and external partner platforms on Azure.
  • Applied Clean Architecture, Vertical Slices and CQRS patterns to keep codebases modular and maintainable.
  • Integrated Azure AI/ML services and improved visibility with structured logging, health checks and monitoring dashboards.
  • Participated in code reviews and technical discussions while ensuring quality through automated testing with xUnit.

Software Engineer

Miratech

Aug 2022 - Nov 2023

ModernizationIntegrationsSQL optimization
  • Worked on a debt collection platform for a multinational client.
  • Led modernization of legacy applications to .NET Core, focusing on better performance and cleaner APIs.
  • Developed and optimized integrations between internal tools and external systems.
  • Improved heavy SQL Server queries and stored procedures to handle large data volumes more efficiently.
  • Worked closely with QA and stakeholders in an Agile setup to deliver stable features.

Application Development Associate

Accenture

Feb 2021 - Aug 2022

Data pipelinesEnterprise delivery
  • Worked with a utilities-sector client on backend automation projects.
  • Built data processing pipelines using C#, SSIS and SQL Server.
  • Designed and tuned complex T-SQL queries for high-volume batch jobs and reporting.
  • Supported integrations with multiple internal and external platforms in a production environment.

Skills

A Microsoft-stack toolkit for building and evolving dependable products.

Backend

C#.NET CoreASP.NET CoreEntity Framework CoreREST APIsClean ArchitectureCQRSVertical Slice Architecture

Azure

Azure App ServicesAzure FunctionsAzure SQL DatabaseAzure Cosmos DBAzure DevOpsCI/CD Pipelines

Databases

SQL ServerT-SQLAzure SQLCosmos DB (NoSQL)

Engineering

OpenAPI / SwaggerGitDockerDistributed SystemsxUnitLogging & Observability

Education

CIFP Txurdinaga LHII

2019 - 2021

Higher Technician in Multi-platform Applications Development

Languages

  • Spanish - Native
  • English - C1

Contact

Need a senior .NET developer who can own backend delivery?

The fastest path is LinkedIn. The CV download and GitHub profile are available for screening context.

Connect on LinkedIn Download CV