Senior Frontend EngineerWe are seeking a highly skilled Senior Frontend Engineer specializing in React and TypeScript to join our agile development team. In this role, you will be responsible for developing and maintaining high-performance, client-side web and mobile-responsive applications. You will not only focus on building beautiful user interfaces but also ensure the long-term health of the application through performance automation testing, instrumentation, and real-time monitoring.Required Skills & Qualifications:Expert-level proficiency in React, TypeScript, HTML5, and CSS/SCSS.Proven experience in performance automation testing and UI testing frameworks (e.g., Cypress, Playwright, Jest, or Selenium).Hands-on experience with instrumentation and monitoring tools such as Grafana, Splunk, and GCP Cloud Logging.Strong experience with iterative development, TDD, and collaborative coding (Pairing/Mobbing).Prior work experience at client or in client's Industry.Applicants must be able to work directly for Artech on W2.Preferred Skills & Qualifications:Experience with Cloud platforms (specifically Google Cloud Platform).Familiarity with CI/CD pipelines and automated application delivery.Experience working with design systems and reusable component libraries.Day-to-Day Responsibilities:Full-Lifecycle Engineering: Solve complex problems by designing, developing, and delivering software using React, TypeScript, and modern web technologies.Cross-Functional Collaboration: Partner closely with Software Engineering Manager, Designers, Backend Developers, and Architects.Prototyping & Design: Create high-fidelity mock-ups and prototypes to visualize new features.