Senior Full-Stack Engineer: Modernize Core Platform

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

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.