Senior Software Engineer I/II - Simulation Engineering

Confirmed live in the last 24 hours

Rocket Lab

Compensation

$125,000 - $160,000/year

Littleton, CO

On-site

Posted March 18, 2026

Job Description

ABOUT ROCKET LAB

Rocket Lab is an end-to-end space company delivering responsive launch services, complete spacecraft design and manufacturing, payloads, satellite components, and more – all with the goal of opening access space. The rockets and satellites we build, and launch enable some of the most ambitious and vital space missions globally, supporting scientific exploration, Earth observation and missions to combat climate change, national security, and exciting new technology demonstrations.

Our Electron rocket has become the second most frequently launched U.S. rocket annually and has delivered more than 230 satellites to orbit, all while we work to develop Neutron, our upcoming medium-lift, reusable launch vehicle for larger constellation deployment. Our Space Systems business designs and builds our extensive line of satellites, payloads, and their components, including spacecraft that have been selected to support NASA missions to the Moon and Mars and components used on the James Webb Space Telescope.

SPACE SYSTEMS

At Rocket Lab, we’re not just launching rockets — we're building the future of space. Our Space Systems team builds everything from complete spacecraft, precision payloads to the components and subsystems that allow them to thrive in space, like solar panels, flight software, star trackers, optical systems, separation systems, radios, and more.

Our Space Systems team has enabled more than 1,700 missions, ranging from interplanetary exploration, in-space manufacturing to national security and defense initiatives. The team has built spacecraft, payloads, and components for missions to the Moon and Mars, working with partners including NASA, the Space Development Agency, and the U.S. Space Force. Whether it’s a single high-performance spacecraft, constellation, or the vertically integrated components that help them get to space — our world class Space Systems team is empowering some of the boldest and most ambitious space missions.

SENIOR SOFTWARE ENGINEER I/II – SIMULATION ENGINEERING

We are seeking a highly skilled and experienced Senior Software Engineer I/II – Simulation Engineering to join our team, based out of our Littleton, CO site. In this role, you will focus on designing, developing, and optimizing simulation models and systems to solve complex engineering problems. You will work closely with cross-functional teams to create high-fidelity simulations that drive innovation, improve system performance, and support decision-making processes. This position is ideal for someone with a strong background in simulation, computational modeling, and software engineering, who thrives in solving challenging technical problems.

WHAT YOU’LL GET TO DO:

Design, develop, and implement simulation models for complex systems and processes.
Analyze and validate simulation results to ensure accuracy and reliability.
Collaborate with domain experts to define requirements and refine simulation parameters.
Optimize simulation performance and scalability for large-scale systems.
Develop tools and frameworks to support simulation workflows and analysis.
Integrate simulation models with existing software systems and tools.
Design and implement graphical user interfaces (GUI) to enhance simulation usability.
Document simulation methodologies, assumptions, and findings for stakeholders.
Stay up-to-date with advancements in simulation technologies and methodologies.

(Please note: This position can be hired at the Senior Software Engineer I or Senior Software Engineer II level.)

QUALIFICATIONS YOU’LL BRING AS SENIOR SOFTWARE ENGINEER I:

Bachelor’s degree in Computer Science, Engineering, Applied Mathematics, Physics, or a related field.
5+ years of industry experience in simulation engineering, computational modeling, or related fields.
Proficienc

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