Navigation Engineer; Simulation Software

About Logos Space

Logos Space is building a proliferated Low Earth Orbit (pLEO) constellation to deliver resilient, high-performance connectivity to enterprise and government users worldwide. As part of that effort, the Navigation team is designing and building the software and infrastructure for spacecraft timing, astrodynamics, maneuver planning, orbit determination, and related navigation workflows used across flight and ground systems.

The Navigation team at Logos Space is assisting in developing a constellation‑level software framework to model, test, validate, and operate our proliferated LEO constellation as a dynamic space network. This role focuses on building the software infrastructure that connects spacecraft navigation state, mission geometry, link availability, network topology, routing behavior, operational constraints, and software‑defined networking workflows into a scalable constellation‑level test and analysis environment.

In this role, you will help build the framework for testing how the constellation behaves as a dynamic network, including spacecraft motion, contact geometry, inter‑satellite and ground‑link availability, timing behavior, coverage, latency, routing constraints, topology changes, and network control behavior. The framework will support engineering trades, network validation, operational rehearsals, anomaly reconstruction, “what‑if” analysis, and stakeholder‑facing visualization.

In this role, you will develop the software infrastructure that turns navigation products, spacecraft telemetry, predicted ephemerides, network configuration, and mission constraints into a usable constellation‑level representation of system behavior. You will work closely with navigation, flight software, ground software, networking, mission operations, product, and systems engineering teams to define interfaces, build scenario tooling, validate network behavior, and make this framework an engineering‑quality capability rather than a static visualization.

We are looking for engineers who can work well in a fast‑paced environment, turn incomplete requirements into practical software, and build constellation‑level infrastructure that is technically rigorous, scalable, and usable across engineering and operations teams.

• Develop and maintain C++ and Python software for the Logos constellation‑level software framework.
• Build constellation‑scale infrastructure that combines spacecraft ephemerides, mission geometry, timing behavior, link availability, ground assets, network topology, routing state, and operational constraints.
• Develop software services that ingest, generate, and distribute navigation‑derived state products used by the framework, including propagated trajectories, time‑tagged spacecraft states, contact geometry, link windows, coverage products, and mission event timelines.
• Support modeling and testing of software‑defined networking behavior, including routing state, link‑state changes, handovers, path availability, latency, throughput constraints, degradation modes, and network recovery behavior.
• Build scenario generation tools for constellation deployment, nominal operations, planned maneuvers, ground contacts, network outages, spacecraft degradation, regional demand changes, maintenance windows, and mission‑critical “what‑if” cases.
• Develop capabilities that allow the team to simulate future constellation behavior, reconstruct past events, compare predicted and observed behavior, and support anomaly investigations.
• Build user‑facing dashboards, visualization tools, and 2D/3D constellation viewers that allow engineers, operators, and stakeholders to inspect constellation state, link availability, routing behavior, coverage, latency, and network performance.
• Develop scalable simulation and data‑processing infrastructure capable of handling many spacecraft, many links, long time horizons, and repeated scenario sweeps.
• Define data models, message schemas, configuration formats, scenario definitions, telemetry interfaces, and validation workflows for framework inputs and outputs.
• Build validation infrastructure, including unit tests, integration tests,…