Staff Frontend Engineer – Systems

Sift

. Design and optimize browser-based data pipelines using Web Workers, Apache Arrow binary data, persistent OPFS caching, and multi-layer invalidation strategies .

Posted 10/14/2026full-timeMarina Del Rey • California • United StatesLead💰 $200,000 - $250,000 per yearWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in designing and optimizing browser-based data pipelines, with a strong focus on performance and correctness. Proficient in TypeScript and React, with a solid understanding of memory management, data serialization, and compliance with ITAR/EAR regulations.

Highest-signal resume keywords

TypeScriptReact Codebase ExperienceData Serialization FormatsWeb WorkersITAR/EAR Compliance

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Data Pipeline DesignPerformance OptimizationMemory Layout UnderstandingThread CoordinationCaching StrategiesBinary Data FormatsTechnical VisualizationGPU-Accelerated RenderingTime-Series TelemetryScatter Plot Development

Tools & Technologies

Apache ArrowWebGLWebGPUD3EChartsCanvas 2DOPFSSharedArrayBuffer

Industry Keywords

AerospaceScientific ComputingMedical DevicesFinancial Systems

Tech Stack

Tools & technologies

ApacheD3.jsReactTypeScript

About the role

Key responsibilities & impact

Design and optimize browser-based data pipelines using Web Workers, Apache Arrow binary data, persistent OPFS caching, and multi-layer invalidation strategies
Build interactive visualizations for time-series telemetry, FFT frequency analysis, geographic mapping, and scatter plots
Solve browser performance problems, including bypassing React's render cycle, coordinating worker thread pools, managing large binary buffers, and determining main-thread versus off-thread architecture
Architect composable UI systems exposing high-fidelity hardware telemetry data
Collaborate with backend engineers on API design, binary serialization formats, and query semantics for structured data endpoints
Help evolve and scale Sift's early-stage data infrastructure platform for hardware engineering teams

Requirements

What you’ll need

7+ years building software for the web
Strong TypeScript skills
Experience working in a React codebase
Systems-level understanding of memory layout, thread coordination, caching strategies, and data serialization formats
Experience building software where correctness and performance could not be traded off
U.S. Person required: U.S. citizen, lawful permanent resident, or protected individual such as an asylee or refugee
Compliance with ITAR/EAR regulations
Bonus: GPU-accelerated browser rendering experience (WebGL, WebGPU, Canvas 2D)
Bonus: Technical visualization at scale (D3, ECharts, custom renderers)
Bonus: Binary data formats or columnar data processing experience (Arrow, Parquet, protobuf, FlatBuffers)
Bonus: Web Workers, SharedArrayBuffer, OPFS, or other browser threading/storage APIs
Bonus: Experience in aerospace, scientific computing, medical devices, financial systems, or similar
Bonus: Experience building previously nonexistent infrastructure such as caching layers, data processing pipelines, rendering engines, or developer tools

Benefits

Comp & perks

Equity
Benefits
Bonus
Opportunity to help evolve and scale the platform
Relocation support for candidates moving to LA (implied by 'open to relocating candidates to LA')