New 
Software Engineer / JavaScript/HTML/CSS
 Quadrant, Inc. | |
 United States, D.C., Washington | |
 Mar 17, 2026 | |
|
Software Engineer - JavaScript/HTML/CSS Washington, DC Salary From: $185,000 per year MUST: An active Top Secret clearance or higher. 5+ years of experience in web application development, modernization, and refactoring. Proficiency in React, Node.js, JavaScript/HTML/CSS, and SQL (SQL Server and Oracle). Experience developing and integrating RESTful APIs. Experience in clean coding practices, including modular design, reuse, and performance optimization. Strong ability to analyze, refactor, and improve legacy applications. Experience with Git or other version control systems. Excellent problem-solving, communication, and collaboration skills. DUTIES: Maintain, modernize, and refactor web applications for improved scalability, performance, and maintainability. Develop clean, efficient, and modular code following best practices in React.js, Node.js, JavaScript, HTML, and CSS. R efactor and optimize legacy code, improving readability, reducing technical debt, and enhancing maintainability. Enhance data-driven applications, building dashboards, automated workflows, and visualizations. Optimize SQL queries and database performance while ensuring security and best practices (SQL Server and Oracle). Collaborate with stakeholders to define technical requirements and implement scalable, modern solutions. Work within Agile methodologies (Scrum, XP, Kanban) to deliver high-quality solutions efficiently. Conduct code reviews, mentor junior developers, and promote continuous improvement. Support decision-making through actionable reports, analytics, and data-driven insights Quadrant is an affirmative action/equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, status as a protected veteran, or status as an individual with a disability. "Healthcare benefits are offered to all eligible employees according to compliance mandated by the Affordable Care Act". | |