Senior Frontend Engineer, AI Agents for Hardware Telemetry

Sift Stack, Inc.; California (MO); On-site; USD 180,000 - 230,000; Full time

Job summary

Sift, Inc. in Marina Del Rey, CA is seeking an experienced product-engineering lead to own the frontend for Sift Agents, AI-assisted hardware telemetry reviews.

You’ll talk to customers, decide what to build, and own it from MVP through every iteration after it ships, delivering fast, polished browser experiences for large real-time datasets. You’ll work with backend and full-stack engineers on API design, push performance with Web Workers and modern UI patterns, and contribute to a cohesive

Qualifications

• 8+ years of professional software engineering experience.
• Have built complex, high-performance web applications with technologies like React, NextJS, TypeScript, or similar.
• Have an eye for detail: you notice the micro-interactions, latency, drops in FPS, and polish that separate good interfaces from exceptional ones.
• Are curious about new AI products: you try new agents, models, and features as they ship, and have opinions about what makes them good.

Responsibilities

• Talk directly to customers and partner with product to turn real review workflows into agent capabilities: generating dashboards, writing analysis scripts, and surfacing insights buried in their telemetry
• Build the frontend surfaces where Sift Agents live, and make them feel great
• Design the interaction patterns of agentic UX: streaming responses, long-running tasks, interruptions, and showing an agent’s work so engineers can trust it
• Render an agent’s findings alongside the telemetry that backs them, and keep it fast even when the data is large
• Push the browser to its limits when the data demands it: Web Workers, OPFS-backed caching, and stepping outside React when the framework becomes the bottleneck
• Contribute to the component library to keep agentic UI patterns consistent across the product
• Collaborate with backend and full stack engineers on the API design that powers agent sessions

Skills

React

TypeScript

Web performance

Frontend engineering

Tools

Tailwind

Radix UI

WebGL

D3.js

WebAssembly

Job description

Sift, Inc. in Marina Del Rey, CA is seeking an experienced product-engineering lead to own the frontend for Sift Agents, AI-assisted hardware telemetry reviews.

You’ll talk to customers, decide what to build, and own it from MVP through every iteration after it ships, delivering fast, polished browser experiences for large real-time datasets. You’ll work with backend and full-stack engineers on API design, push performance with Web Workers and modern UI patterns, and contribute to a cohesive