{"id":2501046,"url":"https://alion.io/job/sift-staff-frontend-engineer-systems","title":"Staff Frontend Engineer, Systems","company":{"id":4821,"name":"Sift","domain":"siftstack.com","url":"https://alion.io/company/siftstack","size_band":"501-1000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Ashby","truth_index":{"grade":"B","score":82,"open_postings":7,"ghost_share":0,"stale_share":0.714,"repost_share":0,"time_to_fill_p50_days":56,"computed_at":"2026-10-15T05:46:00Z"}},"role":"Frontend","role_family":"Frontend","seniority":"staff","employment_type":"full_time","work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Marina del Rey, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":160000,"max":250000,"currency":"USD","period":"year","gross":null,"usd_annual":250000},"salary_estimate":null,"experience_years_min":7,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Apache HTTP Server","optional":false},{"name":"React.js","optional":false},{"name":"Time Series Forecasting","optional":false},{"name":"TypeScript","optional":false},{"name":"Apache ECharts","optional":true},{"name":"Apache Kafka","optional":true},{"name":"AWS","optional":true},{"name":"Azure","optional":true},{"name":"D3.js","optional":true},{"name":"Docker","optional":true},{"name":"Druid","optional":true},{"name":"DuckDB","optional":true},{"name":"Flink","optional":true},{"name":"GCP","optional":true},{"name":"GitHub Actions","optional":true},{"name":"Go","optional":true},{"name":"InfluxDB","optional":true},{"name":"JavaScript","optional":true},{"name":"Kubernetes","optional":true},{"name":"QuestDB","optional":true},{"name":"Redpanda","optional":true},{"name":"Redux","optional":true},{"name":"Tailwind CSS","optional":true},{"name":"Terraform","optional":true},{"name":"WebAssembly","optional":true},{"name":"WebGPU","optional":true}],"status":"live","first_seen_at":"2026-10-14T01:32:35Z","employer_posted_date":"2026-10-14","last_verified_at":"2026-10-15T08:43:28Z","board_verified":true,"closed_at":null,"days_open":1,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":1},"description":"About Sift\nSift is the data infrastructure platform for hardware engineering teams. Sift turns high-frequency telemetry into engineering insights for mission-critical systems. Teams use Sift to build and operate rockets, satellites, autonomous vehicles, energy systems, defense platforms, and more.\nFounded by former SpaceX engineers who built the tools behind Dragon and Starlink, Sift is building the data infrastructure to herald the AI era for physical systems.\nIn This Role, You'll:\nDesign and optimize data pipelines that run entirely in the browser: Web Workers processing Apache Arrow binary data, persistent caching in the Origin Private File System, and multi-layer invalidation strategies that keep the UI responsive while handling datasets that would crash most web apps.\n\nBuild interactive visualizations for time-series telemetry, FFT frequency analysis, geographic mapping, and scatter plots, and many more, each with distinct performance profiles and correctness constraints. When your users are debugging flight hardware, a rendering inaccuracy is a mission-critical problem, not a cosmetic one.\n\nSolve performance problems that frameworks can't: bypassing React's render cycle for 60fps interactions, coordinating worker thread pools, managing memory across large binary buffers, and making architectural decisions about what belongs on the main thread vs. off it.\n\nArchitect composable UI systems for technical users who need full data fidelity. Not simplified dashboards, but tools that expose the real complexity of hardware telemetry with zeptosecond level timestamp precision - Work across the stack boundary. Collaborate with backend engineers on API design, binary serialization formats, and query semantics for structured data endpoints.\n\nThe Skillset You'll Bring:\n7+ years building software for the web, with meaningful experience pushing browsers beyond their comfort zone, whether that's performance optimization, binary data processing, GPU rendering, multi-threaded architectures, or something else that required understanding the platform deeply\n\nStrong TypeScript skills and comfort working in a React codebase, but your value isn't in knowing React APIs. It's in knowing when React is the wrong tool for the job and what to reach for instead\n\nSystems-level intuition: you think about memory layout, thread coordination, caching strategies, and data serialization formats, not just component hierarchies\n\nExperience building for correctness under constraint. You've worked on software where bugs have real consequences, or you've built systems where data fidelity and performance couldn't be traded off against each other\n\nBonus Points:\nExperience with GPU-accelerated rendering in the browser (WebGL, WebGPU, Canvas 2D optimizations) or technical visualization at scale (D3, ECharts, custom renderers)\n\nHands-on work with binary data formats (Arrow, Parquet, protobuf, FlatBuffers) or columnar data processing\n\nBackground in Web Workers, SharedArrayBuffer, OPFS, or other browser threading/storage APIs - Experience in domains where data correctness is non-negotiable: aerospace, scientific computing, medical devices, financial systems, or similar\n\nProjects where you had to build infrastructure that didn't exist yet, like custom caching layers, data processing pipelines, rendering engines, or developer tools\n\nEngineering At SIFT:\nYou'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:\nWeb frontend & backend: React, TypeScript, Redux, Tailwind, WebAssembly, D3.js, WebGL, and Go\n\nData: Parquet, Flink, Kafka, Redpanda, Beam, DuckDB, Timescale, QuestDB, InfluxDB, and Druid\n\nInfrastructure: GitHub Actions, AWS, Azure, GCP, Docker, Kubernetes, and Terraform\n\nLocation:\nSift’s headquarters is in Marina Del Rey, CA (Next to LAX). We collaborate in person twice a week-on Mondays and Thursdays -and come together for a full week every two months. We are open to relocating candidates to LA or working from our San Francisco office for the right candidate.\nSalary range: $200,000 - $250,000 per year. Plus equity and benefits.\nEligibility:\nU.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.","description_format":"text","description_chars":4431,"description_truncated":false,"requirements":{"experience_years_min":7,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":["Equity"],"hiring_locations":[{"name":"United States","iso":"US","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Observability & APM","Manufacturing & Industrial Software","Stream Processing & Real-Time Data"],"lifecycle":[{"event":"open","at":"2026-10-14T05:55:07Z"}],"visa":[{"country":"US","licensed_sponsor":true,"evidence":"Filed H-1B visas in the last two years","filings_12m":0,"filings_prev_12m":1,"green_card_filings_12m":0,"median_offered_wage_usd":null,"route":null,"cap_exempt":false,"checked_at":"2026-10-15T11:24:14+00:00","sources":["US Department of Labor: LCA disclosure data (H-1B, H-1B1, E-3)"],"filings_for_role_12m":0}],"liveness":{"score":86,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.86,"p_room":1,"age_days":1,"expected_fill_days":56,"reasons":["conf:1","win:early"],"computed_at":"2026-10-15T05:46:00Z"},"pay":{"stated_usd_annual":250000,"is_top_pay":true},"html_url":"https://alion.io/job/sift-staff-frontend-engineer-systems","json_url":"https://alion.io/job/sift-staff-frontend-engineer-systems.json","meta":{"generated_at":"2026-10-15T11:27:33Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","about":"Alion is a live layer of people, companies and AI agents: who they are, whether they are real and active right now, what they do and how to work with them, readable by people and by agents and paid per call.","catalog":"https://alion.io/catalog.json","usage":{"tier":"crawler_verified","counted_by":"address","units_charged":1,"used_today":17614,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-16T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.02,"usd":0.002,"plus_per_slice":{"credits":0.05,"usd":0.005}},"unit":"per company, plus each slice with data","note":"the employer in depth","call":{"mcp_tool":"get_company","arguments":{"id":4821},"rest":"https://alion.io/mcp/rest/get_company?id=4821"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fsift-staff-frontend-engineer-systems"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":1,"usd":0.1},"unit":"per slice","note":"pay, demand and time to fill for this role and place","call":{"mcp_tool":"market_stats"},"human":"https://alion.io/catalog?offer=market.stats&for=job%2Fsift-staff-frontend-engineer-systems"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.02,"usd":0.002},"unit":"per posting in a list","note":"similar open postings","call":{"mcp_tool":"search_jobs"},"human":"https://alion.io/catalog?offer=job.search&for=job%2Fsift-staff-frontend-engineer-systems"},{"id":"company.verify","title":"Is this company real and active right now","status":"pilot","price":null,"unit":"per company","request":{"url":"https://alion.io/catalog/request","method":"POST","body":"{\"offer\": \"company.verify\", \"for\": \"job/sift-staff-frontend-engineer-systems\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fsift-staff-frontend-engineer-systems"}]}