FrontEnd SW Engineer

We are looking for a frontend engineer specializing in complex visualization and performance-intensive applications to work on Viewer—a clinical application for reviewing, interpreting, and scoring home sleep studies. This is not a typical forms-and-dashboards frontend role. The Viewer displays clinical patient information and enables clinicians to navigate, inspect, annotate, and edit events directly on interactive waveforms. The engineering challenges involve high-volume time-series data, precision interactions, rendering performance, responsiveness, and memory efficiency. The role is focused on the frontend development. Backend experience is valuable for understanding APIs, data models, and end-to-end behavior, but the core expertise we seek is on the visualization/frontend side.

• Interactive physiological-signal visualization: Build and maintain multi-channel waveform views with SciChart, including zoom/pan, channel arrangements, montages, and accurate navigation through long recordings.
• Clinical event interaction: Develop event overlays and precise interactions such as selection, drawing, dragging, editing, and scoring on top of time-series signals.
• High-performance rendering: Diagnose and improve slow rendering, UI responsiveness, and memory consumption when handling long, data-heavy studies. Work with Web Workers and browser profiling tools to keep interactions smooth.
• Complex data and state: Handle synchronization between displayed channels, annotations, scoring workflows, and analysis results; investigate difficult edge cases from real clinical studies.
• Specialized frontend architecture: Contribute to a substantial TypeScript / JavaScript application built with SolidJS, SciChart, Vite, and Tailwind CSS, with particular attention to reactive updates and rendering efficiency.
• Quality and reliability: Reproduce field issues, identify root causes, write and review fixes, and support testing, dependency updates, and releases in a regulated medical-device environment.
• System integration: Work with backend engineers on REST APIs and data flows needed by the Viewer.

• B.A. in Computer Science, Software Engineering, or a related technical discipline
• 4+ years of professional frontend software development experience.
• Strong experience with a reactive UI framework (SolidJS, React, or similar); direct SolidJS experience is not required.
• Proven experience with technically demanding visual interfaces—for example, interactive charts, waveform/signal viewers, scientific or industrial visualization, CAD-like interfaces, or large time-series datasets.
• Solid understanding of browser rendering, performance profiling, memory management, and responsiveness; ability to investigate performance bottlenecks rather than only implement UI features.
• Experience building precise interactive behaviors such as zooming, panning, selections, overlays, or drag-and-edit interactions.
• Experience with physiological signals, waveform viewers, signal processing, or scientific/medical visualization. preferred
• Experience developing software in medical-device or regulated environments. preferred
• Experience with Java / Spring Boot, REST API design, and service-oriented applications.
• Familiarity with SQL / MySQL, relational data models, and backend debugging.
• Exposure to AWS, Docker, Kubernetes, or CI/CD pipelines.
• Excellent JavaScript and TypeScript skills, including asynchronous programming and complex application state.
• Strong debugging and problem-solving skills, including ownership of complex production issues.
• Ability to work with REST APIs and understand backend-driven data flows.
• Familiarity with Git, code reviews, testing, and collaborative development.