Senior .NET Full-Stack Developer (Remote/Hybrid)

Collasys LLC; Carlisle (Cumberland County); Hybrid; USD 90,000 - 130,000; Full time

Job summary

Collasys LLC is seeking a Full Stack .NET Developer to design and build enterprise-grade web applications across .NET APIs and modern front-end experiences. You will develop, test, and deploy applications, create RESTful services, and collaborate with analysts, QA, and front-end teams.

The role emphasizes clean code, performance optimization, and documentation, with remote/hybrid work options and a strong focus on security and scalable solutions.

Qualifications

• Proficiency in .NET languages and frameworks (C#, VB.NET).
• Experience with ASP.NET MVC and Web API.
• Strong knowledge of ASP.NET Core, SQL Server, T-SQL, and DB design.
• Experience with REST APIs, enterprise integration, and cloud architecture.
• Familiarity with GitHub Copilot and AI-assisted development, CI/CD, DevOps, and source control.
• Knowledge of application security, compliance, and technical leadership.

Responsibilities

• Develop, test, and deploy web applications using .NET technologies.
• Design and build RESTful APIs and backend services.
• Write clean, maintainable, and efficient code.
• Collaborate with business analysts, QA engineers, and front-end developers.
• Debug, troubleshoot, and resolve application issues.
• Optimize application performance and scalability.
• Participate in code reviews and follow coding standards.
• Prepare technical and procedural documentation.

Skills

.NET

C#

VB.NET

ASP.NET MVC

Web API

ASP.NET Core

SQL Server

T-SQL

Database design

REST APIs

Cloud architecture

GitHub Copilot

AI-assisted development

CI/CD

DevOps

Source control

Security and compliance

Technical leadership

Job description

Collasys LLC is seeking a Full Stack .NET Developer to design and build enterprise-grade web applications across .NET APIs and modern front-end experiences. You will develop, test, and deploy applications, create RESTful services, and collaborate with analysts, QA, and front-end teams.

The role emphasizes clean code, performance optimization, and documentation, with remote/hybrid work options and a strong focus on security and scalable solutions.