Overview 

Sedaro 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 Engineering 

• Location:
  In person in Arlington, VA 

• U.S. Citizen or permanent resident status required 

Who We Are 

Our 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 Are 

• You believe power users deserve powerful tools with dense information and sophisticated controls 

• You’re
  thrilled by messy internals, whether it’s
  memory allocators, WebGL shader pipelines, GC traces, thread contention, or network packet timing  

• You relish performance optimizations, both elegant abstractions and gnarly workarounds 

• You pitch in wherever needed to move the mission forward, even if it’s outside your lane 

• Loading spinners and latency nag at you. You keep your own list and find time to fix them 

What You’ll Do 

• Design and build high-performance productivity tools with impactful incremental releases 

• Profile and eliminate bottlenecks across our Cesium-based visualization pipeline and data processing backend 

• Optimize API response times and data throughput for scaling complexity 

• Build performance testing and observability that catches regressions and guides decisions 

• Become an expert on rendering performance, shaping how the team approaches speed and efficiency as we scale 

Benefits 

• Equity 

• Unlimited PTO 

• 401(k) with 4% match 

• 100% premium payment for medical insurance 

• Parental Leave 

• Flexible work schedule with core hours 

• Company provided lunches 3 days a week 

• Industry-leading career development opportunities 

Requirements 

• Bachelor’s degree in computer science or equivalent experience 

• 3+ years of professional experience in software engineering 

• Experience 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 TypeScript 

Additional
desirable experience: 

• Experience with data visualization and 3D rendering 

• Experience with React 

• Proficiency with Python 

• Experience with styling, including CSS, color theory, and type design