At Praxa Sense, we’re redefining non-invasive health monitoring with our optical innovation ALIS – a speckle-based biosensor enabling new frontiers in remote vital sign tracking.
We’re looking for a Senior Web Developer to own the application layer that connects our breakthrough hardware to its users. You’ll craft an Electron-based web app that ingests real-time biosensor data, processes it in JavaScript/TypeScript, and turns it into interfaces that are both beautiful and functional – from engineering dashboards to polished evaluation tools for high-profile customers.
Your work won’t just be “screens and buttons” – you’ll be shaping how the world experiences our sensor. When a global tech company tests ALIS in their product lab, your interface will be their first impression.

• Design and develop the entire front-end experience for our Electron-packaged web application – from rapid prototypes to production-ready tools.
• Build real-time visualization components using graphing and charting libraries of your choice (e.g., D3.js, Plotly, Recharts) for live biosignal monitoring.
• Implement responsive, accessible UI patterns in React that adapt to both internal engineering workflows and customer evaluation use cases.
• Integrate directly with hardware using Web Serial, WebSocket for efficient data transport.
• Collaborate with firmware and Python engineers – understanding enough C++ to discuss low-level changes and occasionally contributing Python glue code.
• Tailor the UI/UX for prospective customers during integration trials – ensuring they can easily explore, understand, and export sensor data.
• Take architectural ownership: propose libraries, set coding standards, and maintain performance in data-heavy scenarios – in alignment with the broader team.