Senior .NET Backend Engineer | REST APIs & Cloud

Valiant Technologies LLC; Tampa (FL); On-site; USD 85,000 - 120,000; Full time

Job summary

Valiant Technologies LLC is seeking a .NET Developer with strong experience in Microsoft technologies to develop, enhance, and maintain enterprise applications. The candidate will build backend services, REST APIs, integrate databases, and deliver secure, scalable applications using the .NET ecosystem.

The role requires hands-on experience with ASP.NET MVC/Web API, SQL Server, and ORMs such as Entity Framework Core, LINQ, and Dapper.

Qualifications

• Design, develop, and maintain enterprise applications using C# and .NET.

Responsibilities

• Design, develop, and maintain enterprise applications using C# and ASP.NET Core.
• Build RESTful APIs and backend services for web and business applications.
• Implement business logic, validation, authentication, and authorization.
• Develop database objects, stored procedures, and optimized SQL queries.
• Integrate applications with internal systems, third-party APIs, and external services.
• Apply dependency injection, asynchronous programming, and exception-handling practices.
• Write unit tests and integration tests to ensure application reliability.
• Troubleshoot defects, resolve production issues, and perform root-cause analysis.
• Participate in code reviews and maintain coding standards.
• Deploy and support applications using Azure DevOps or equivalent CI/CD tools.
• Collaborate with architects, QA engineers, business analysts, and product teams.
• Participate in Agile/Scrum ceremonies, sprint planning, and technical discussions.
• Maintain technical documentation and contribute to application performance improvements.

Skills

Object-oriented programming

SOLID principles

Design patterns

Dependency injection

Agile/Scrum

REST API design

Tools

ASP.NET MVC

Web API

RESTful services

Microsoft SQL Server

T-SQL

Entity Framework Core

LINQ

Dapper

Azure

AWS

xUnit

NUnit

Moq

Azure DevOps

Job description

Valiant Technologies LLC is seeking a .NET Developer with strong experience in Microsoft technologies to develop, enhance, and maintain enterprise applications. The candidate will build backend services, REST APIs, integrate databases, and deliver secure, scalable applications using the .NET ecosystem.

The role requires hands-on experience with ASP.NET MVC/Web API, SQL Server, and ORMs such as Entity Framework Core, LINQ, and Dapper.