Constellation builds ConstellationOS, an intelligence and forecasting layer for satellite and ground-network operations. We are looking for a Founding Engineer to build the platform and ship the models that run on it. You will work directly with the founders and own large parts of the system end to end: services, infrastructure, security, simulation, and the path from research model to production. This is an early seat with real equity and real say in what we build.
ResponsibilitiesDesign and build the core platform: backend services, data pipelines for telemetry and forecasts, and the APIs customers integrate with.
Own infrastructure and security, including commercial cloud, GovCloud, and on-prem deployments, CI/CD, and security requirements.
Decide system architecture as the product grows, and write down the decisions.
Take research models from the science team into production: serving, monitoring, evaluation against physics baselines.
Build developer tools and simulation environments the whole team uses.
Work with customers and government partners on pilots and integrations when engineering input is needed.
3+ years building and running production software, or equivalent depth. Prior machine learning engineering experience strongly preferred.
Strong in Python plus at least one of Go, C++, or Rust. Solid on SQL, containers, and cloud infrastructure (Docker, Terraform).
Has owned a system from design through production, ideally in an early-stage team.
Comfortable with ambiguity, wide scope, and shipping without much process.
U.S. person required (ITAR).
Skills Required
- Proficiency in C++ and/or Rust
- Experience designing and operating high-throughput, event-driven distributed systems (target ~100k+ msgs/sec)
- Deep understanding of distributed systems, networking, operating systems, and concurrency
- Experience with low-latency performance optimization, concurrency models, memory efficiency, and profiling
- Experience deploying and operating distributed systems in AWS (or equivalent)
- High-agency/startup mentality and ability to take ownership from design to production
- Ability to work directly with customers and debug live operational systems (forward-deployed engineering)
- Experience with event-driven architectures and streaming pipelines
- Background in networking protocols (TCP/UDP), routing, or distributed protocols
- Experience with simulation frameworks (e.g., Basilisk, ROS, Gazebo) or game engines
- Exposure to satellite systems, orbital data, ground segment infrastructure (SATCAT, TLEs, GSaaS)
- Experience running ML inference pipelines in production
What We Do
Constellation Space builds ConstellationOS, an AI-native operating system that forecasts satellite link degradation minutes ahead and autonomously reroutes traffic under policy to prevent data loss. The platform ingests telemetry, uses physics-informed ML to predict failures with high accuracy, and executes rapid, policy-bound reroutes to provide mission assurance and scalable orchestration for large satellite constellations.
