Fluid Dynamics Engineer

TL;DR

Fluid Dynamics Engineer (CFD/Thermal): Perform steady-state and transient external aerodynamic and internal flow analyses using CFD and engineering methods with an accent on unsteady aerodynamic behavior (buffeting, separation, recirculation), buffet/aero-acoustic loads, and thermal-coupled loads that drive flight hardware design iterations. Focus on building and automating simulation and data-processing workflows and validating models through test campaign and flight instrumentation definition.

Company

hirify.global builds modern launch solutions for small and medium-sized satellites and constellations.

What you will do

• Run steady-state and transient external aerodynamic and internal flow analyses across the full CFD workflow (meshing, solution, post-processing).
• Develop methods to assess unsteady aerodynamic effects (buffeting, separation, recirculation) and deliver buffet and aero-acoustic loads for vibroacoustic, loads, and control analysis.
• Analyze internal flow phenomena for launch vehicle loads (propellant management, propellant sloshing, thermal stratification) using CFD and engineering methods.
• Support thermal coupled loads analysis, maintain thermal models, and contribute to thermal control system design.
• Develop and improve tools and automation for simulation, data processing, and analysis workflows.
• Contribute to defining test campaigns and flight instrumentation to validate and verify analysis models and requirements.

Requirements

• Degree in Aerospace Engineering, Mechanical Engineering, or a related field.
• 3+ years of relevant experience in aerodynamics, fluid, or thermal analysis for aerospace or launch vehicles.
• Experience with CFD and fluid/thermal simulation tools (e.g., StarCCM+, Simcenter, Thermal Desktop/ESATAN/Thermica).
• Proficiency in Python or MATLAB for automating pre- and post-processing workflows.
• Fluent English.
• Ability to collaborate and communicate effectively in multi-disciplinary, cross-functional teams.

Culture & Benefits

• 30 days of vacation.
• Company pension plan with a 20% employer contribution after the probation period.
• Subsidised lunch and a fully financed Deutschlandticket for public transport.
• Sport club memberships (EGYM Wellpass) and an individual learning allowance after the probation period.
• Childcare allowance for non-school-age children.
• Employee participation via a virtual company share program.