Senior .NET Developer

LingaTech

Senior Software Developer providing hands-on development support for enterprise application modernization. Working with legacy ASP.NET MVC and modern .NET 8-based solutions in an Agile environment.

Posted 5/27/2026contractHarrisburg • Pennsylvania • 🇺🇸 United StatesSeniorWebsite

Tech Stack

Tools & technologies

ASP.NETAzureCloudEntity FrameworkJavaScriptjQuery.NETSQL

About the role

Key responsibilities & impact

Provide hands-on development support for enterprise application modernization
Work across legacy ASP.NET MVC applications and modern .NET 8–based solutions
Design, develop, and maintain modern .NET 8 solutions using ASP.NET Core Web APIs and Blazor (Server and/or WebAssembly)
Enhance and support legacy ASP.NET MVC applications built on .NET Framework 4.x
Build reusable Razor components, shared libraries, and scalable service layers
Develop responsive, accessible user interfaces compliant with ADA and WCAG standards
Ensure interoperability between new services and existing legacy systems
Collaborate within Agile/Scrum teams, participating in sprint planning, backlog refinement, and technical reviews
Partner with architects and senior technical staff on implementation and design decisions
Provide accurate effort estimates and meet contractual delivery commitments
Develop API-based and file-based integrations with internal systems and approved third-party services
Implement background processing using scheduled jobs, hosted services, and Windows or cloud-hosted services
Design, optimize, and maintain SQL Server schemas, queries, and stored procedures
Implement data access using Entity Framework 6 and Entity Framework Core
Ensure transactional integrity, auditing, and compliance with data retention requirements
Implement claims-based authentication and enforce role-, title-, and action-based authorization
Apply secure coding practices and properly handle sensitive and confidential data
Implement logging, monitoring, and diagnostics using Application Insights or equivalent tools

Requirements

What you’ll need

8+ years of professional software development experience delivering enterprise applications
5+ years of hands-on experience with ASP.NET MVC using .NET Framework 4.x
3+ years of hands-on experience with ASP.NET Core and modern .NET (.NET 6+ / .NET 8)
Experience developing in C# within layered or N-tier architectures
Experience designing and consuming RESTful APIs
Experience with SQL Server, including relational data modeling and query optimization
Experience using Entity Framework 6 and Entity Framework Core
Experience building Razor Views and Razor Components
Experience with HTML5, CSS3, JavaScript, and jQuery for legacy application support
Experience with Blazor
Demonstrated experience implementing claims-based authentication and fine-grained authorization models
Proven ability to deliver independently with minimal onboarding in complex codebases
Hands-on experience using Azure DevOps, Git, and Visual Studio 2022
Demonstrated success delivering outcomes in long-term contract engagements

Benefits

Comp & perks

full benefits that cover everything from medical to dental, vision, and beyond
perks like a 401k
term life insurance
accidental death & dismemberment coverage
long-term disability
employee referral program
exciting events to show our appreciation
training sessions
employee appreciation events

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

ASP.NET MVCASP.NET Core.NET 8C#RESTful APIsSQL ServerEntity Framework 6Entity Framework CoreBlazorRazor Components

Soft Skills

collaborationcommunicationproblem-solvingindependencetime managementtechnical reviewseffort estimationadaptabilityattention to detaildelivery commitment