Software Engineer, Frontend (Agentic AI)
Sift Stack, Inc.Base Salary
$160k - $200k/yr
Responsibilities
- Talk directly with customers and partner with product teams to turn review workflows into agent capabilities such as dashboards, analysis scripts, and telemetry insights.
- Build and own frontend surfaces for Sift Agents from the initial MVP through subsequent iterations.
- Design agentic interaction patterns for streaming responses, long-running tasks, interruptions, and transparent display of agent work.
- Render agent findings alongside supporting telemetry while maintaining performance on large real-time datasets.
- Optimize browser execution using Web Workers, OPFS-backed caching, and approaches outside React when necessary.
- Contribute to the component library and maintain consistent agentic UI patterns across the product.
- Collaborate with backend and full stack engineers on APIs supporting agent sessions.
Requirements
- At least 3 years of professional software engineering experience.
- Experience building complex, high-performance web applications with React, NextJS, TypeScript, or similar technologies.
- Strong product ownership orientation, including talking to customers, deciding what to build, and shipping product iterations.
- Strong attention to frontend details including micro-interactions, latency, frame rate, and interface polish.
- Curiosity about new AI products, agents, models, and features.
- Bonus: experience shipping products at scale with large data volumes, significant active user counts, or deep technical complexity.
- Bonus: experience shipping LLM-powered features or building chat and agentic interfaces with streaming responses, tool-call rendering, and long-running tasks.
- Bonus: understanding of web performance optimization and browser rendering.
- Bonus: experience with Tailwind, Radix UI, WebGL, D3.js, Apache ECharts, WebAssembly, time-series data, dashboards, data-editing environments, or scientific computing and hardware telemetry.
Benefits
- Hybrid collaboration in Marina del Rey, CA, with in-person work twice weekly on Mondays and Thursdays
- Full week of team collaboration every two months
- Relocation to Los Angeles or work from the San Francisco office may be available
- Equity and benefits
Tech Stack
Categories
About Sift Stack, Inc.
Sift is transforming how modern machines are built and operated. Our platform goes beyond traditional monitoring, enabling automated data review that catches unusual conditions in systems too complex for manual checks. This not only enhances reliability but also dramatically speeds up development cycles. At our core, we provide a unified solution for ingesting, storing, and analyzing vast amounts of machine data. By combining powerful data processing with easy-to-use visualizations, we help engineers make sense of enormous amounts of information. From spacecraft to self-driving cars, Sift is the backbone of innovation for companies pushing technology to new limits. Born from the challenges of spaceflight, Sift aims to accelerate technological progress. We believe that by giving engineers better tools to understand and improve their creations, we can unlock a new era of innovation. Our mission goes beyond solving today's engineering problems; we're building the foundation for a future where the most ambitious machines are developed with confidence, run with precision, and constantly improved. We're also tackling related challenges like simplifying regulatory compliance, and improving manufacturing processes. By connecting data from various sources—from sensors to manufacturing records to regulatory requirements—we're empowering a new generation of engineers to build the technologies that will shape our world. Join us in our journey to usher in this new age of reliable, groundbreaking technology. Whether you're launching rockets, developing autonomous systems, or advancing energy and transportation, Sift is your partner in turning vast amounts of data into insights that drive innovation forward.