Simulation Engineer – Fluids & Thermal Systems

• On site
• Bangalore
• Apply by: 30 Mar 2026

About the company

OrbitAID Aerospace is building the foundation for a new era of on-orbit servicing and refueling, enabling satellites to operate longer, maneuver more freely, and deliver greater value in space. At the core of this vision is the development of standardized docking and refueling technologies and a future network of orbital fuel stations, transforming how spacecraft are designed, launched, and sustained in orbit.
Our long-term goal is to make space operations more flexible, resilient, and sustainable—where satellites are serviced, upgraded, and refueled rather than replaced. We are a small, driven team that values strong engineering fundamentals, ownership, and hands-on problem solving. At OrbitAID, you’ll work closely across disciplines, move quickly from concept to hardware and software, and contribute directly to building the space infrastructure that will power the next generation of missions.

 

Role Overview

The Simulation Engineer – Fluids & Thermal Systems is responsible for analyzing and predicting the behavior of spacecraft fluid and thermal systems using high-fidelity simulations. This role focuses on CFD, thermal modeling, and system-level analysis to ensure stable, safe, and efficient propellant management during on-orbit operations such as docking and refueling.

 

Key Responsibilities

• Perform high-fidelity CFD simulations to analyze internal flows, pressure drops, and slosh dynamics in spacecraft fluid systems
• Conduct thermal simulations to ensure cryogenic or hypergolic propellant stability in the space radiation environment
• Analyze coupled fluid–thermal behavior during docking, refueling, and transient operating conditions
• Apply thermodynamic laws to predict system performance and off-nominal behavior
• Automate simulation workflows using Python for preprocessing, post-processing, and large dataset handling
• Develop custom scripts and analytical tools for data visualization and performance assessment

 

Required Qualifications

• Minimum 2 years of experience in Computational Fluid Dynamics (CFD), Structural & Thermal Analyses. 
• Bachelor’s or Master’s degree in Mechanical Engineering, Aerospace Engineering, or related field
• Strong theoretical foundation in thermodynamics and fluid mechanics
• Proven experience with CFD tools such as ANSYS Fluent, Star-CCM+, or OpenFOAM
• Experience developing and interpreting P&IDs for aerospace or high-precision fluid systems
• Proficiency in Python for engineering scripting and data analysis
• Familiarity with thermal analysis tools such as Thermal Desktop, NX Thermal, or ANSYS Thermal

 

Preferred / Highly Desired Skills

• Experience analyzing propellant transfer systems or spacecraft fluid loops
• Ability to model transient, multiphase, or sloshing flows
• Experience correlating CFD and thermal results with system-level performance

 

Nice to Have

• Experience designing and analyzing fluidic architectures and P&IDs for propellant storage and transfer systems
• Exposure to cryogenic systems or in-space refueling concepts
• Experience working on space or aerospace flight hardware