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Liam Ewen

Systems & Electrical Engineer · Defence & Aerospace
Brisbane, QLD, Australia

Overview

Systems and electrical engineer with five years' experience across Defence acquisition and aerospace flight-safety engineering. Currently leads full-lifecycle development of ASTRA, Praxis Aerospace's in-house flight-safety analysis platform, spanning requirements and hazard analysis through design, implementation, and verification. The platform cuts analysis turnaround by up to 10x and is now used by Australian Space Agency contractors. Author and presenter of a paper at the 2025 International Astronautical Congress (IAC) in Sydney, and mentors a small engineering team.

Core Focus Areas

Systems & Safety Engineering
Systems Engineering Requirements Traceability Functional Hazard Assessment Risk & Hazard Management Verification & Validation DO-178C Configuration Management
Aerospace & Simulation
MATLAB ASTOS Systems Tool Kit (STK) 6-DOF Modelling Monte Carlo Simulation Fusion 360 Altium
Software Engineering
TypeScript Rust Python PostgreSQL Docker Git Linux
Leadership & Delivery
Team Leadership Mentoring Stakeholder Management Technical Documentation

Experience & Projects

Systems Engineer

Leads full-lifecycle development of ASTRA, Praxis's in-house flight-safety simulation and analysis platform, covering requirements and hazard analysis through design, implementation, and verification. Delivers flight-safety and launch-vehicle risk analyses for Australian and international space missions, and leads a small engineering team, mentoring interns and graduate engineers.

Project Engineer, Defence NAVAID Acquisition

Delivered national navigation and communications infrastructure installations for the Department of Defence, covering requirements verification, contractor deliverable review, configuration management, and safety governance through to formal Commonwealth acceptance.

Publications

Application of the ASTRA Software Tool to Support Launch Site Feasibility and Safety Assessment

Technical paper on Praxis Aerospace's in-house flight-safety and launch-vehicle risk analysis platform, detailing requirements, trajectory simulation, and debris risk assessment for commercial and sovereign space missions.

Education

Bachelor of Electrical Engineering (Honours)

Double minor in Advanced Electrical Engineering and Aerospace Engineering.