Software Engineering Intern (Modeling & Simulation) - Fall 2026

Reposted 18 Days Ago
Be an Early Applicant
Los Angeles, CA, USA
In-Office
Internship
Aerospace • Hardware • Manufacturing
Hermeus is a aircraft manufacturer focused on rapid design, build, and test of high-Mach and hypersonic aircraft.
The Role
Intern will develop simulation code for 6DOF systems using Julia, collaborate with teams, validate models with real-world data, and optimize performance.
Summary Generated by Built In
Hermeus is a venture-backed defense aviation company reclaiming the lost art of rapid iterative prototyping to build the fastest aircraft in the world today. By prioritizing relentless hardware iteration, we deliver high-speed systems at the pace of the modern battlefield. We work with the Department of War to provide the high-speed capabilities our nation and its allies need to maintain a durable, asymmetric advantage.

As a Modeling & Simulation Software Engineering Intern you will work with the software team to develop performant modeling and simulation code for our 6DOF SITL simulation using Julia. You'll Interface with the Flight Software, HMI, and Flight Sciences teams to meet stakeholder needs and ensure accurate results. Your work will involve creating hardware/physics informed software models and validate results with real data. 
 
Fall: Around 16 weeks (August - December)
 

Responsibilities:

  • Develop performant simulation code for 6 Degrees of Freedom (6DOF) Software-in-the-Loop (SITL) systems using Julia.
  • Develop user driven features and focus on scalability of our Monte Carlo simulation
  • Collaborate with cross-functional teams including Flight Software, Human-Machine Interface (HMI), and Flight Sciences to align simulation outputs with stakeholder requirements.
  • Design and implement physics-informed models that accurately represent hardware behavior and system dynamics.
  • Validate simulation accuracy by comparing model outputs with real-world flight data and refining models accordingly.
  • Optimize simulation performance to ensure real-time execution and scalability across different test environments.
  • Participate in code reviews and testing cycles to maintain high software quality and reliability.
  • Document modeling assumptions, validation results, and integration workflows for internal knowledge sharing and future development.

Minimum Requirements:

  • Pursuing a degree in Computer Science, Aerospace Engineering, Electrical Engineering, Applied Mathematics, or a related technical field.
  • Proficiency in Julia or strong experience with scientific computing languages such as Python, MATLAB, or C++.
  • Understanding of 6DOF dynamics and simulation principles, especially in aerospace or robotics contexts.
  • Familiarity with modeling physical systems, including hardware-in-the-loop or physics-informed simulation techniques.
  • Experience with data validation and analysis, including comparing simulation outputs to real-world data.
  • Strong understanding of engineering first principles
  • Demonstrated ability to work within cross-functional teams
  • Enthusiasm for aviation and Hermeus' mission
  • Excellent written and verbal communication skills
  • GPA of 3.0 or above

U.S. EXPORT CONTROL COMPLIANCE STATUS 
The person hired will have access to information and items subject to U.S. export controls, and therefore, must either be a “U.S. person” as defined by 22 C.F.R. § 120.62 or otherwise eligible for deemed export licensing. US persons include U.S. citizens, U.S. nationals, lawful permanent residents (green card holders), and asylees and refugees with such status granted, not pending. 
 
EQUAL OPPORTUNITY
Hermeus is an Equal Opportunity Employer. Employment decisions at Hermeus are based solely on merit, competence, and qualifications, without regard to race, color, religion, gender, national origin/ethnicity, veteran status, disability status, age, sexual orientation, gender identity, marital status, mental or physical disability, or any other legally protected status.
 

Skills Required

  • Pursuing a degree in Computer Science, Aerospace Engineering, Electrical Engineering, Applied Mathematics, or related field
  • Proficiency in Julia or strong experience with scientific computing languages such as Python, MATLAB, or C++
  • Understanding of 6DOF dynamics and simulation principles
  • Familiarity with modeling physical systems including hardware-in-the-loop simulation
  • Experience with data validation and analysis, comparing simulation outputs to real-world data
  • Strong understanding of engineering first principles
  • Demonstrated ability to work within cross-functional teams
  • Excellent written and verbal communication skills
  • GPA of 3.0 or above

Hermeus Compensation & Benefits Highlights

The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about Hermeus and has not been reviewed or approved by Hermeus.

  • Healthcare Strength Healthcare is described as employer-paid for employees and dependents, including dental and vision. Feedback suggests this substantially reduces healthcare burden and strengthens overall total rewards.
  • Leave & Time Off Breadth The package includes unlimited PTO for exempt employees, generous accrued PTO for non‑exempt staff, and observed federal holidays. Feedback suggests this breadth aims to support work‑life balance.
  • Equity Value & Accessibility Stock options are guaranteed with all full‑time offers, with potential for additional grants based on performance. Feedback suggests this provides ownership upside alongside base pay and bonuses.

Hermeus Insights

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The Company
HQ: Atlanta, GA
270 Employees
Year Founded: 2018

What We Do

Hermeus is a high-speed aircraft manufacturer focused on the rapid design, build, and test of high-Mach and hypersonic aircraft for the national interest. Working directly with the Department of Defense, Hermeus delivers capabilities that will ensure that our nation, and our allies, maintain an asymmetric advantage over any and all potential adversaries. Utilizing an integrated, hardware-rich, iterative development approach to aircraft design and build, Hermeus aims to deliver advanced air power at a pace not seen in the U.S. since the 1950s. Hermeus’ current Quarterhorse Program is actively unlocking unmanned high-speed flight. One program, four aircraft – each purpose-built to unlock a specific technical challenge, advance learnings, and incrementally de-risk critical technology in the pursuit of hypersonic aircraft. Today, Hermeus is building its second Quarterhorse vehicle, Mk 2, after having designed, built, and flight tested its predecessor, Mk 1, in 18 months. Capable of reaching speeds of Mach 3+, Quarterhorse Mk 2 will be the fastest uncrewed military aircraft in service for national defense. The final iteration of Quarterhorse, Mk 4, will be capable of transitioning from turbofan to ramjet mode utilizing a Hermeus-developed turbine-based combined cycle (TBCC) propulsion system to achieve sustained speeds of Mach 5+. Hermeus' approach of build-fly-build lays the groundwork for unlocking hypersonic flight at a pace and cost previously deemed impossible. America needs fast planes fast – and Hermeus is delivering them.

Why Work With Us

We prioritize hardware and people. Cutting-edge technology is only made possible by bringing together a world-class team. At Hermeus, you will be challenged – but also empowered. We encourage calculated risks taking and learning from our mistakes. Iteration is the name of the game.

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