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# Software Engineer / Senior Software Engineer - Dot NET

- **Company:** Span Enterprises LLC
- **Location:** Rock Hill, SC, United States
- **Experience:** Expert
- **Salary:** $75,000.0 - $110,000.0
- **Contract:** Permanent contract
- **Skills:** Clean Code Principles, ASP.NET, .NET Framework, Multitier Architecture, Application Performance Management, HTML5, Unit Testing, C Sharp (Programming Language), Cascading Style Sheets (CSS), Code Reuse, Code Review, Databases, Software Debugging, Dependency Injection, Software Design Patterns, DevOps, Language Integrated Query, Entity Framework, PostgreSQL, Microsoft SQL Server, MongoDB, NoSQL, Nunit, OAuth, Object-Oriented Software Development, Performance Tuning, Query Optimization, Software Engineering, SQL Stored Procedures, SQL Databases, Software Technical Review, Data Logging, .NET Core, Spring Cloud, ReactJS, Asp.net Web Api, Indexer, Backend, Git, Git Flow, Solid Principles, Front End Software Development, Restful APIs, Es2015, Software Version Control
- **Published:** August 2, 2026
- **Apply:** https://www.indeed.com/viewjob?jk=a216dfee70f0ac89

## About the Role

Backend

 * C#
 * .NET Core / ASP.NET Core
 * ASP.NET Web API
 * RESTful API development
 * Dependency Injection
 * Entity Framework Core
 * LINQ
 * Authentication & Authorization (JWT/OAuth basics)

Frontend

 * HTML5
 * CSS3
 * JavaScript (ES6+)
 * React Experience is a plus

Databases

Experience with one or more:

 * Microsoft SQL Server
 * PostgreSQL
 * MongoDB

Should have knowledge of:

 * Query optimization
 * Stored Procedures
 * Indexing
 * Transactions
 * Database normalization

Software Engineering

 * Object-Oriented Programming (OOP)
 * SOLID Principles
 * Clean Code Practices
 * N-Tier Architecture
 * Design Patterns (Repository, Factory, Strategy, etc.)
 * Exception Handling & Logging
 * Unit Testing (xUnit/NUnit)
 * Debugging & Performance Optimization

Version Control

 * Git
 * Git branching strategies
 * Pull Requests & Code Reviews

Join us to be part of a forward-thinking team where your skills will directly impact innovative projects! We value energetic professionals who thrive in collaborative settings and are eager to develop scalable web applications that make a difference.

## Description

We are looking for passionate .NET Developers with 3-6 years of experience in building scalable web applications and RESTful APIs. The ideal candidate should have strong fundamentals in C#, ASP.NET Core, databases, clean coding practices, and software design principles.

You will work alongside experienced engineers to design, develop, test, and deploy cloud-native applications used by customers across the United States.

Responsibilities

 * Design, develop, and maintain scalable applications using .NET Core / ASP.NET Core
 * Develop secure and high-performance REST APIs
 * Write clean, maintainable, and reusable code following SOLID principles
 * Design efficient database schemas and optimize SQL queries
 * Work with relational and NoSQL databases
 * Write comprehensive unit tests using xUnit or NUnit
 * Participate in code reviews and follow engineering best practices
 * Troubleshoot production issues and optimize application performance
 * Collaborate with Product, QA, DevOps, and Engineering teams
 * Contribute to CI/CD pipelines and deployment activities
 * Participate in architecture discussions and technical design reviews


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