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# Web Application Developer, Senior (Top Secret Clearance w/SCI el

- **Company:** AMERICAN SYSTEMS
- **Location:** Dallas, TX, United States
- **Experience:** Expert
- **Salary:** $155,000.0
- **Contract:** Permanent contract
- **Skills:** HTML, JavaScript (Programming Language), Agile Methodology, Cascading Style Sheets (CSS), Code Review, Cyber Security, Linux, Node.Js, Scrum Methodology, Red Hat Enterprise Linux, Standard Sql, SQL Databases, Systems Integration, Web Applications, ReactJS, Database Performance, Git, Information Technology, Data Analytics, Extreme Programming, Restful APIs, Code Restructuring, Software Version Control, Legacy Systems
- **Published:** October 6, 2026
- **Apply:** https://www.clearancejobs.com/jobs/9220469/web-application-developer-senior-top-secret-clearance-wsci-el

## About the Role

The ideal candidate brings deep experience in React.js, Node.js, JavaScript, HTML, CSS, SQL, and RESTful API integration, along with the ability to refactor legacy systems, improve application scalability and performance, and collaborate with stakeholders in Agile development environments., * Active TS clearance w/SCI eligibility REQUIRED

 * Bachelor's degree in computer science or related field (or equivalent years of relevant experience).
 * 8-10 years of relevant experience
 * Active DoD 8140 IAT II level certification (e.g., Security+ CE or equivalent) or ability to obtain Security+ CE certification within 90 days of hire
 * Proficiency in React.js, Node.js, JavaScript/HTML/CSS, and SQL
 * Experience developing and integrating RESTful APIs.
 * Experience with Git or other version control systems.
 * Ability to analyze, refactor, and improve legacy applications.
 * Familiarity with Linux (RHEL) administration and update management.
 * Experience working in Agile environments, including Scrum or XP methodologies.

## Description

As a Senior Web Application Developer with AMERICAN SYSTEMS, you will have the opportunity to do the following:

 * Modernize and maintain web apps for scalability and performance
 * Write modular code in React.js, Node.js, JavaScript, HTML, and CSS
 * Refactor legacy code to reduce debt and improve readability
 * Build dashboards, workflows, and visualizations for data-driven apps
 * Optimize SQL queries and ensure database performance and security
 * Define and deliver scalable solutions with stakeholders
 * Work in Agile (Scrum, XP, Kanban) environments
 * Conduct code reviews and mentor junior developers
 * Provide actionable reports and analytics for informed decisions
 * Maintain, modernize, and refactor web applications for improved scalability, performance, and maintainability.