Web Developer — Enterprise AWS Apps (TS/SCI)

Cornerstone Defense LLC; Annapolis (MD); On-site; USD 190,000 - 210,000; Full time

Job summary

Cornerstone Defense LLC is seeking a mid-level Web Developer in Annapolis Junction, MD, to contribute across the stack and own features end-to-end in a TS/SCI with Polygraph environment. You will work on enterprise web services deployed in AWS, taking ownership of features, and collaborating with a small team to improve reliability and maintainability across multiple applications.

The role requires experience with PHP, .NET C#, Java, Node.js, Python, HTML/CSS/JavaScript, and modern JS

Qualifications

• Experience designing and implementing features across API, UI, and data layers.
• Production ownership: deployment, monitoring, incidents, and root-cause fixes.

Responsibilities

• Design and implement features across the stack (API, UI, and data layer) with limited supervision; write clear technical approaches when needed.
• Own services in production, deploy, monitor, troubleshoot incidents, and drive root-cause fixes to improve reliability.
• Contribute to system architecture and technical direction (tradeoffs, scalability, security), and participate actively in code reviews.
• Collaborate with stakeholders to refine requirements, estimate work, and deliver iteratively in an Agile environment.

Skills

PHP

.NET C#

Java

Node.js

Python

HTML

CSS

JavaScript

Vue.js

React

Linux

APIs

Secure coding

Relational databases

Tools

AWS

Azure

Nginx

Apache

Tomcat

PowerShell

CI/CD

Job description

Cornerstone Defense LLC is seeking a mid-level Web Developer in Annapolis Junction, MD, to contribute across the stack and own features end-to-end in a TS/SCI with Polygraph environment. You will work on enterprise web services deployed in AWS, taking ownership of features, and collaborating with a small team to improve reliability and maintainability across multiple applications.

The role requires experience with PHP, .NET C#, Java, Node.js, Python, HTML/CSS/JavaScript, and modern JS