Senior .NET Developer - C#/ASP.NET MVC & SQL Server | Ohio

Main Sail LLC; Columbus (OH); On-site; USD 95,000 - 140,000; Full time

Job summary

Main Sail LLC in Columbus, OH is seeking a seasoned .NET Web Developer to design, develop, and maintain ASP.NET MVC applications using C#, ADO.NET and SQL Server in an agile environment.

You will gather requirements, implement multi‑tier architectures, and rewrite legacy apps while adhering to coding standards. You will collaborate across teams and mentor junior staff to deliver robust web solutions.

Qualifications

• Experience in .NET Web Developer role building ASP.NET MVC apps with ADO.NET; 10 years.
• Proficient in ASP.NET development using C#, 10 years.
• SQL Server design/development including queries, tables, views, stored procedures, and functions.
• Experience with .NET Framework 4.0+.
• SOA experience with WCF.
• Experience with N-tier architectures.
• TFS experience for repo, promotions, recovery.
• EF 4.0+ development.
• SSRS/SSIS reporting in MVC apps.
• Agile with TFS/DevOps.
• Visual Studio proficiency incl VS2019.
• Azure DevOps, Git, Boards, CI/CD.
• REST API experience.
• AJAX-enabled controls in ASP.NET; 5 years preferred.

Responsibilities

• Gather requirements, design, develop, test, deploy and support applications.
• Rewrite legacy applications to .NET using C# and ASP.NET Core frameworks.
• Collaborate with IT staff, project managers and developers in an agile environment.
• Ensure applications align with coding standards and architectural guidelines.
• Provide technical guidance and mentoring to junior staff.

Skills

Communication

Leadership

Collaboration

Facilitation

Time management

Requirements prioritization

Analytical thinking

English proficiency

Mentoring

Tools

ASP.NET MVC

ADO.NET

SQL Server

WCF

Entity Framework

SSRS/SSIS

Visual Studio

Azure DevOps/TFS

REST API

AJAX

Job description

Main Sail LLC in Columbus, OH is seeking a seasoned .NET Web Developer to design, develop, and maintain ASP.NET MVC applications using C#, ADO.NET and SQL Server in an agile environment.

You will gather requirements, implement multi‑tier architectures, and rewrite legacy apps while adhering to coding standards. You will collaborate across teams and mentor junior staff to deliver robust web solutions.