Company Name: Sift Stack, Inc. Job Details: $170k-$220k/yrRemoteFull,Time Job Url: https://hiring.cafe/viewjob/o2sho6qqw983b2h9 Job Description: Posted 2mo agoSenior Software Engineer, Frontend@ Sift Stack, Inc.View All JobsSan Francisco, California, United States$170k-$220k/yrRemoteFull TimeResponsibilities:Build UI components, Collaborate on API design, Optimize performanceRequirements Summary:5+ years in web apps, strong React/NextJS/TypeScript, web performance, CSS (Tailwind), Radix UI, data-visualization tooling.Technical Tools Mentioned:React, NextJS, TypeScript, Tailwind, Radix UI, WebGL, D3.js, WebAssembly, Parquet, Flink, Kafka, Docker, Kubernetes, Terraform, GitHub Actions, AWS, Azure, GCP At Sift, we’re redefining how modern machines are built, tested, and operated. Our platform gives engineers real-time observability over high-frequency telemetry—eliminating bottlenecks and enabling faster, more reliable development.Sift was born from our work at SpaceX on Dragon, Falcon, Starlink, and Starship—where scaling telemetry, debugging flight systems, and ensuring mission reliability demanded new infrastructure. Founded by a team from SpaceX, Google, and Palantir, Sift is built for mission-critical systems where precision and scalability are non-negotiable.As an early engineer at Sift, you won’t just write code—you’ll help define the architecture, shape the product, and influence the culture of a company focused on solving real engineering problems. If you’re looking for complex technical challenges and the opportunity to build foundational systems supporting complex machines from the ground up, we want to hear from you.In This Role, You'll:Build high-performance data visualization interfaces and reusable component libraries for complex telemetry dataCreate intuitive user interfaces for data exploration while optimizing for large real-time datasetsCollaborate with backend teams on API design and implementation for seamless user experiencesWrite clean, maintainable code and participate in technical design discussionsThe Skillset You'll Bring:5+ years of professional experience building web applications and data-driven toolsStrong experience building production applications with technologies like React, NextJS, and TypeScriptStrong understanding of web performance optimization and browser renderingExperience with modern CSS (Tailwind) and component libraries (Radix UI) for building design systemsBonus Points:Experience with technical visualization tools (WebGL, D3.js, Apache ECharts) and time-series dataKnowledge of WebAssembly and browser-based computationBackground in scientific computing or technical data visualizationExperience building tools for technical users (dashboards, data-editing environments)Built and launched side projects with consistent usage trafficEngineering At Sift:You'll have the opportunity to help evolve and scale our platform because we're still in the early stages of building the product. Relevant technologies include:Web frontend & backend: React, TypeScript, Redux, Tailwind, WebAssembly, D3.js, WebGL, and Go Data: Parquet, Flink, Kafka, Redpanda, Beam, DuckDB, Timescale, QuestDB, InfluxDB, and DruidInfrastructure: GitHub Actions, AWS, Azure, GCP, Docker, Kubernetes, and TerraformLocation:Sift’s headquarters is in El Segundo, CA. We collaborate in person twice a week—on Mondays and Thursdays—and come together for a full week every two months. While we prefer team members to be local, we’re open to relocating candidates to LA or considering remote work from the San Francisco area for the right candidate.Salary range: $170,000 - $220,000 per year. Plus equity and benefits.Eligibility:U.S. Person Required: 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.