Senior Software Engineer, Frontend (Agentic AI)

The role

You will build frontend surfaces for Sift Agents to help hardware engineers investigate telemetry data. You will design agentic UX patterns, manage streaming interactions, and handle large real-time datasets in the browser.

What you will do

• Talk directly to customers and partner with product to turn workflows into agent capabilities
• Build the frontend surfaces where Sift Agents live
• Design the interaction patterns of agentic UX
• Render an agent's findings alongside telemetry
• Push the browser to its limits using Web Workers and OPFS-backed caching
• Contribute to the component library
• Collaborate with backend and full stack engineers on API design

Required qualifications

• 8+ years of professional software engineering experience
• Built complex, high-performance web applications with technologies like React, NextJS, TypeScript, or similar
• U.S. Person Required: Must be a U.S. citizen, lawful permanent resident, or protected individual such as an asylee or refugee in compliance with ITAR / EAR regulations

Nice to have

• Shipped products to users at scale
• Shipped LLM-powered features
• Built chat or agentic interfaces
• A strong understanding of web performance optimization and browser rendering
• Worked with modern CSS (Tailwind) and component libraries (Radix UI)
• Used technical visualization tools (WebGL, D3.js, Apache ECharts), WebAssembly, and time-series data
• Built tools for technical users
• A personal ecosystem of AI dev tooling
• A background in scientific computing or hardware test and telemetry

Benefits

• Equity
• Benefits

Before you apply

• U.S. Person Required: Must be a U.S. citizen, lawful permanent resident, or protected individual such as an asylee or refugee in compliance with ITAR / EAR regulations

About the company

Sift is the data infrastructure platform for hardware engineering teams. Founded by former SpaceX engineers, they are building the review and analysis layer for the AI era of physical systems.