Simulation Software Engineer/ Radiation and Environmental Effects

Luneus; United States; Hybrid; USD 110,000 - 160,000; Full time

Job summary

Luneus in Huntsville, AL, seeks a Simulation Software Engineer to develop high‑fidelity radiation and environmental effect simulations for space systems. Hybrid role with remote options, collaborating with hardware, electronics, and space radiation engineers to ensure accurate models and integration with system architectures.

You will design backend systems and UX for parameter entry, perform radiation risk assessments, and contribute to TID/SEE/SET/DDD campaigns, delivering reports and test

Qualifications

• Bachelor's degree in a technical field.
• 7+ years in simulation or scientific software development.
• Experience with radiation environment models (trapped protons/electrons, solar protons/heavy ions, GCR).

Responsibilities

• Develop and maintain high-fidelity radiation simulation software.
• Collaborate with hardware, electronics, and radiation engineers.
• Design backend systems and user interfaces for parameter entry.
• Perform radiation risk assessments using in-house tools.
• Support TID, SEE, SET, and DDD evaluation campaigns.
• Develop radiation test plans and procedures.
• Coordinate testing with external labs and universities.
• Produce technical reports on results.

Skills

Radiation testing

Radiation effects

Distributed computing

OpenMP

MPI

Education

Bachelor’s degree in a technical field

Tools

OLTARIS

SPENVIS

CREME96

FLUKA

PHITS

GEANT4

Job description

Simulation Software Engineer, Radiation & Environmental Effects

Hybrid, Huntsville, AL / Fully Remote

About the Company

Our client is an innovative space technology company developing advanced solutions that enable commercial electronics to operate reliably in the harsh radiation environments encountered during space missions. By combining cutting‑edge materials science, radiation analysis and testing, and high‑fidelity simulation, the company helps reduce mission risk, accelerate spacecraft development, and improve the performance and reliability of next‑generation space systems. Working with customers across commercial, civil and defence sectors, they are at the forefront of enabling high‑performance computing technologies for the future of space exploration.

Responsibilities

• Develop and maintain high‑fidelity simulation software used to evaluate radiation effects on spacecraft components.
• Collaborate with hardware, electronics and space radiation engineers to ensure simulation software aligns with system architecture and future development plans.
• Design and develop both backend systems and user interfaces for entering and managing radiation analysis parameters.
• Work cross‑functionally to perform radiation risk assessments for spacecraft hardware using internally developed simulation tools.
• Support Total Ionizing Dose (TID), Single Event Effects (SEE), Single Event Transients (SET) and Displacement Damage Dose (DDD) evaluation campaigns.
• Develop radiation test plans and procedures.
• Coordinate radiation testing activities with external laboratories, universities and research partners.
• Produce technical reports detailing radiation analysis and test results.

Basic Qualifications

• Bachelor’s degree in Computer Science, Software Engineering, Electrical Engineering, Physics or a related technical discipline.
• 7+ years of professional experience in simulation software or scientific software development.
• Experience using industry‑standard radiation environment models, including:
• Trapped protons and electrons
• Solar protons and heavy ions
• Galactic Cosmic Rays (GCR)

Skills & Experience

• Experience supporting radiation testing activities, including TID, SEE or related radiation effects testing.
• Understanding of radiation effects in semiconductor and electronic devices, including measurement and characterization techniques.
• Strong understanding of distributed computing systems, networking protocols, memory management, CPU scheduling and parallel computing technologies such as OpenMP and MPI.
• Experience using radiation modelling and transport tools such as:
  • OLTARIS
  • SPENVIS
  • CREME96
  • FLUKA
  • PHITS
  • GEANT4
  • Or equivalent industry‑standard modelling tools.
• Experience developing scientific or engineering software for aerospace, defence, physics or related high‑performance computing environments is highly desirable.