SiftStack
Senior Software Engineer, Frontend (Agentic AI)
$180K–$230K
Marina Del Rey, CA · Hybrid · Senior · Full-time · Posted Oct 27, 2026
- Experience
- 8+ years of professional software engineering experience.
- Visa sponsorship
- 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 job
Own and build frontend experiences for Sift Agents, making AI-assisted analysis of hardware telemetry dependable, fast, and clear to engineers.
What you'll do
- Partner with customers and product to translate review workflows into agent capabilities and ship them from MVP through iteration.
- Build agentic interfaces for streaming responses, long-running tasks, and agent findings alongside large telemetry datasets.
- Improve browser performance and agent-session APIs in collaboration with engineering teams, and contribute to the component library.
What they ask for
- 8+ years of professional software engineering experience.
- Experience building complex, high-performance web applications with React, NextJS, TypeScript, or similar.
Nice to have
- Experience shipping LLM-powered features or chat and agentic interfaces.
- Experience with web performance, technical visualization, WebAssembly, modern CSS, or component libraries.
Pay
$180,000 - $230,000 per year (base salary)
Tools
React, NextJS, TypeScript, Web Workers, OPFS, Tailwind, Radix UI, WebAssembly
AI focus
Build frontend product experiences for AI agents that investigate anomalies, review hardware telemetry, and surface insights; make agent interactions dependable and show engineers what agents did and why.
Model-written summary · the original posting is authoritative