Senior Full Stack Developer

Unclassified; Williamsburg (VA); On-site; USD 120,000 - 150,000; Full time

Job summary

Unclassified is seeking a Senior Full Stack Developer to help transform a desktop platform into a modern web application. You will work primarily with C#, .NET, and React to build new features and improve existing functionality.

You will help shape the technical direction of the platform, collaborate with stakeholders, and ensure scalable, high-quality software delivery. This role emphasizes ownership and practical problem solving.

Qualifications

• 5+ years of professional software development experience.
• Strong experience with C#, .NET, React, and SQL.
• Experience building and maintaining full-stack web applications.
• Solid understanding of REST APIs, object-oriented programming, and software design principles.
• Comfortable working with Git and modern development workflows.

Responsibilities

• Develop features for new web modules and modernize legacy components.
• Collaborate with product and design teams to shape the platform direction.
• Write clean, scalable code and participate in code reviews.

Skills

C#

.NET

React

SQL

REST APIs

Object‑Oriented Programming

Code Reviews

Tools

Git

Job description

Overview

We're looking for a Senior Full Stack Developer to join our team and help build the next generation of our core platform. Our current application has been built as a desktop solution, and we're in the process of moving key modules to a modern web application. You'll work primarily with C#, .NET, and React to develop new features, improve existing functionality, and help shape the technical direction of the platform.

Requirements

• 5+ years of professional software development experience.
• Strong experience with C#, .NET, React, and SQL.
• Experience building and maintaining full-stack web applications.
• Solid understanding of REST APIs, object-oriented programming, and software design principles.
• Comfortable working with Git and modern development workflows.
• Experience migrating or modernizing legacy applications is a plus.
• Ability to troubleshoot complex issues and build practical, scalable solutions.
• Experience participating in code reviews and following coding best practices.
• Strong communication skills and the ability to work closely with both technical and non-technical stakeholders.
• Self-driven, dependable, and comfortable taking ownership of projects from development through deployment.