Lead Software Engineer, Front End

OverviewSedaro is hiring a Lead Software Engineer to optimize performance across our Cesium-based 3D rendering and data pipeline for aerospace simulation. You'll profile and eliminate bottlenecks, optimize how we move massive datasets from backend to browser, and extend our data visualization toolkit. Your work directly unlocks our customers' ability to analyze and learn from increasingly complex simulations.Team: Studio, reporting to the Director of EngineeringLocation: In person in Arlington, VAU.S. Citizen or permanent resident status requiredWho We AreOur mission is simulation at scale. Sedaro runs high-fidelity physics simulations of satellite constellations and connected fleets. Our platform makes massive datasets explorable through faster-than-real-time 3D rendering and multi-dimensional analytics. We're built on React, TypeScript, Python, and Kubernetes. Join us as an early employee building the interface layer for AI-augmented engineering and operations.Who You AreYou believe power users deserve powerful tools with dense information and sophisticated controlsYou're thrilled by messy internals, whether it's memory allocators, WebGL shader pipelines, GC traces, thread contention, or network packet timingYou relish performance optimizations, both elegant abstractions and gnarly workaroundsYou pitch in wherever needed to move the mission forward, even if it's outside your laneLoading spinners and latency nag at you. You keep your own list and find time to fix themWhat You'll DoDesign and build high-performance productivity tools with impactful incremental releasesProfile and eliminate bottlenecks across our Cesium-based visualization pipeline and data processing backendOptimize API response times and data throughput for scaling complexityBuild performance testing and observability that catches regressions and guides decisionsBecome an expert on rendering performance, shaping how the team approaches speed and efficiency as we scaleBenefitsEquityUnlimited PTO401(k) with 4% match100% premium payment for medical insuranceParental LeaveFlexible work schedule with core hoursCompany provided lunches 3 days a weekIndustry-leading career development opportunitiesRequirementsBachelor's degree in computer science or equivalent experience3+ years of professional experience in software engineeringExperience profiling and optimizing web application performance (backend APIs, frontend rendering, or both)Experience implementing automated load and performance testing (stress tests, benchmarks, regression detection)Proficiency with TypeScriptAdditional Desirable ExperienceExperience with data visualization and 3D renderingExperience with ReactProficiency with PythonExperience with styling, including CSS, color theory, and type designJ-18808-Ljbffr