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About the Role

Sift Agents are AI agents designed to assist hardware engineers by investigating anomalies, reviewing data, and answering questions quickly. This role offers product ownership and autonomy, allowing you to interact directly with customers, define product direction, and manage features from MVP through iterations. You will focus on polishing micro-interactions, building caching layers, and enhancing the user experience of agentic products.

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

Requirements

3+ years of professional software engineering experience
Get excited about owning a product area: talking to customers, deciding what to build, and shipping it
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
Must be a U.S. citizen, lawful permanent resident, or protected individual such as an asylee or refugee in compliance with ITAR (International Traffic in Arms Regulations) / EAR (Export Administration Regulations) regulations.

Skills

React
NextJS
TypeScript
Web Workers
OPFS-backed caching
Tailwind
Radix UI
WebGL
D3.js
Apache ECharts
WebAssembly
time-series data

Location

Marina Del Rey, CA
San Francisco office
Remote (for the right candidate)

Work Type

Hybrid (in-person twice a week, full week every two months)

Experience Level

3+ years of professional software engineering experience

Salary/Compensations

$160,000 - $200,000 per year

Benefits

Equity
Benefits

About the Company

Sift is the data infrastructure platform for hardware engineering teams.
We turn high-frequency telemetry into engineering insights for mission-critical machines: rockets, satellites, autonomous vehicles, energy systems, and defense platforms.
Founded by former SpaceX engineers, we are building the review and analysis layer for the AI era of physical systems.