Web Application Developer - Senior

About the job Web Application Developer - Senior

Location: Chantilly, VA

Clearance: Active TS/SCI required. Agency polygraph will be sponsored.

Salary Range: $130,000 - $150,000 DOE + Comprehensive Benefits Package

Overview:

Osprey Talent Solutions is supporting a mission-focused national security partner seeking a Senior Web Application Developer to design and deliver secure, scalable web applications within a multi-enclave enterprise environment.

This role supports high-visibility investigative and data-driven mission systems. The selected candidate will lead frontend development efforts while collaborating across engineering, infrastructure, and security teams to ensure performance, compliance, and operational resilience.

Key Responsibilities:

Design, develop, and maintain modern web applications using best development practices

Translate UI/UX wireframes into high-quality, production-ready code

Optimize applications for performance, scalability, and security

Implement and maintain Section 508 accessibility compliance

Integrate frontend applications with RESTful APIs and backend services

Contribute to search functionality, reporting features, and dashboard capabilities

Apply secure coding practices to protect against vulnerabilities

Participate in Agile planning and release activities

Mentor junior developers and provide technical leadership within the team Required Qualifications:

Bachelors degree in Computer Science, Software Engineering, or related field

Eight or more years of experience in web application development

Active TS/SCI clearance

Strong proficiency in Angular, React, or similar modern frontend frameworks

Advanced experience with JavaScript and TypeScript

Experience with HTML5, CSS3, and responsive design principles

Experience integrating frontend applications with RESTful APIs

Working knowledge of backend technologies such as .NET, Python, or Node.js

Experience with relational databases (MySQL, PostgreSQL, SQL Server)

Strong understanding of web application security and performance optimization Preferred Experience:

Experience with GraphQL

Experience integrating search platforms such as Elasticsearch

Familiarity with messaging systems such as RabbitMQ or Redis

Experience with containerization technologies (Docker, Kubernetes)

Experience working within cloud environments supporting national security missions

Familiarity with CI/CD pipelines and DevSecOps practices

Experience working in classified environments Work Environment:

On-site in Chantilly, VA

U.S. citizenship required. Must be eligible to complete agency-specific polygraph requirements