Hiring: Senior Software Engineer, Frontend (Agentic AI) Company: Sift Location: Marina del Rey, CA Job Posted Time: 2026-09-10 12:08:49 Target Skills & Keywords : API Design, AWS, Apache, Azure, CSS, Design System, Docker, Druid, Flink, GCP, GitHub Actions, InfluxDB, Kafka, Kubernetes, LLM, MVP, Next.js, Parquet, QuestDB, Radix UI, React, Render, Terraform, TypeScript About the job Experience: •8+ years of professional software engineering experience Required Skills: •Hardware programs generate far more telemetry than any team can review by hand. Sift Agents is our answer: AI agents that work alongside hardware engineers, investigating anomalies, reviewing test and flight data, and answering in minutes questions that used to take a day of scripting. •This is a product engineering role, not a research role. Most of the work is the hard part of making agents feel dependable in the browser: streaming interactions, long-running tasks, rendering agent output over large real-time datasets, and showing engineers exactly what an agent did and why. •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 Qualifications: •Shipped products to users at scale: large data volumes, significant active user counts, or deep technical complexity •Built chat or agentic interfaces: streaming responses, tool-call rendering, long-running tasks •A strong understanding of web performance optimization and browser rendering •Worked with modern CSS (Tailwind) and component libraries (Radix UI) to build design systems •Used technical visualization tools (WebGL, D3.js, Apache ECharts), WebAssembly, and time-series data •Built tools for technical users (dashboards, data-editing environments) •A personal ecosystem of AI dev tooling: custom agents, skills, scripts, or workflows built to ship faster •A background in scientific computing or hardware test and telemetry •Web frontend & backend: React, TypeScript, Redux, Tailwind, WebAssembly, D3.js, WebGL, and Go •Data: Parquet, Flink, Kafka, Redpanda, Beam, DuckDB, Timescale, QuestDB, InfluxDB, and Druid Compensation: •$180,000 - $230,000 / year Interested candidates, please apply directly through the job posting on company's career page or try via AI auto apply on this platform. Don't miss this opportunity to join a forward-thinking team!