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Freelance Simulation Software Engineer Jobs (NOW HIRING)

Toyon

Simulation Software Engineer

Goleta, CA

$110K - $180K/yr

Toyon is seeking a highly motivated software engineer to develop and maintain an internal space systems modeling and simulation application written in C++. The candidate will also deploy scripted ...

METECS

Junior Simulation Software Engineer

Houston, TX · On-site

METECS is seeking an entry-level Simulation Software Engineer to support NASA's simulation efforts as part of the Robotics, Simulations, and Graphics Support (RSGS) team. This role is ideal for ...

METECS

Junior Simulation Software Engineer

Houston, TX · On-site

METECS is seeking an entry-level Simulation Software Engineer to support NASA's simulation efforts as part of the Robotics, Simulations, and Graphics Support (RSGS) team. This role is ideal for ...

Apple

Camera Simulation Software Engineer

San Diego, CA

$122K - $184K/yr

The software engineer will be responsible for the full-product lifecycle of the simulation tools from design/coding/testing to bug fixing and critical new technology integrations. The candidate ...

Actalent

GNC Simulation Software Engineer

Houston, TX

$55 - $80/hr

GNC Simulation Software Engineer Design, analyze, and implement GNC algorithms and simulations for aerospace vehicles. Maintain and develop analysis tools, regression test scenarios, Monte Carlo ...

Etched

Chip Simulation Software Engineer

San Jose, CA · On-site

$200K - $250K/yr

The chip simulation team plays a key role in hardware-software co-design, enabling early development of the full software stack. As an engineer on this team, you will design, develop, and test ...

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Freelance Simulation Software Engineer information

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How much do freelance simulation software engineer jobs pay per year?

As of Aug 6, 2026, the average yearly pay for freelance simulation software engineer in the United States is $137,846.00, according to ZipRecruiter salary data. Most workers in this role earn between $104,000.00 and $162,000.00 per year, depending on experience, location, and employer.

What are the key skills and qualifications needed to thrive as a freelance simulation software engineer?

To excel as a Freelance Simulation Software Engineer, you need strong programming skills (such as C++, Python, or MATLAB), a solid understanding of simulation methodologies, and a relevant degree in engineering, computer science, or a related field. Familiarity with industry-standard simulation tools like Simulink, ANSYS, or Arena, and experience with version control systems are often required. Outstanding problem-solving abilities, self-motivation, and effective client communication distinguish top performers in this freelance role. These competencies enable the engineer to deliver accurate, efficient simulations and manage projects independently, ensuring client satisfaction and professional growth.

What are some common challenges faced by freelance simulation software engineers when managing multiple client projects?

Freelance Simulation Software Engineers often juggle several projects at once, each with unique technical requirements and deadlines. Balancing these projects can be challenging, especially when clients have shifting priorities or last-minute requests. Effective communication, clear project scoping, and robust time management are crucial to ensure client expectations are met while maintaining high-quality work. Additionally, freelancers must stay updated with the latest simulation tools and standards, which can require continuous self-directed learning.

What is the difference between Freelance Simulation Software Engineer vs Simulation Software Developer?

AspectFreelance Simulation Software EngineerSimulation Software Developer
CredentialsTypically requires a degree in computer science, engineering, or related fields; certifications are a plusSimilar educational background; certifications may enhance prospects
Work EnvironmentIndependent, project-based work often remotely or freelance platformsEmployed by companies or organizations, working in office or remote teams
Employer & Industry UsageClients across various industries like aerospace, automotive, defense; freelance platformsCompanies developing simulation software or using simulation tools internally
Search & Comparison IntentLooking for freelance opportunities or project-based work in simulation softwareSeeking full-time or contract roles within organizations

The main difference is that a Freelance Simulation Software Engineer works independently on diverse projects, often remotely, while a Simulation Software Developer is typically employed by a company to develop and maintain simulation software as part of a team.

What does a freelance simulation software engineer do?

A Freelance Simulation Software Engineer designs, develops, and tests simulation software for various industries, such as aerospace, automotive, healthcare, or manufacturing. They work independently or on contract to model real-world systems, create virtual environments, and run simulations to analyze system behaviors. Responsibilities often include coding, debugging, optimizing algorithms, and collaborating with clients to meet project requirements. Freelancers typically manage their own schedules and work with multiple clients, offering flexibility and a diverse range of project experiences.
More about Freelance Simulation Software Engineer jobs
What cities are hiring for Freelance Simulation Software Engineer jobs? Cities with the most Freelance Simulation Software Engineer job openings:
What are the most commonly searched types of Simulation Software Engineer jobs? The most popular types of Simulation Software Engineer jobs are:
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Freelance Simulation Software Engineer jobs near you
Infographic showing various Freelance Simulation Software Engineer job openings in the United States as of August 2026, with employment types broken down into 88% Full Time, 8% Part Time, and 4% Contract. Highlights an 88% Physical, 3% Hybrid, and 9% Remote job distribution, with an average salary of $137,846 per year, or $66.3 per hour.

Simulation Software Engineer (Application Software)

SpaceX

Hawthorne, CA • On-site

$145K - $175K/yr

Other

Medical, Dental, Vision, Life, Retirement, PTO

Re-posted 7 days ago

SpaceX rating

8.8

Company rating: 8.8 out of 10

Based on 147 frontline employees who took The Breakroom Quiz

14th of 71 rated aerospace companies

Job description

SpaceX was founded under the belief that a future where humanity is out exploring the stars is fundamentally more exciting than one where we are not. Today SpaceX is actively developing the technologies to make this possible, with the ultimate goal of enabling human life on Mars.
SIMULATION SOFTWARE ENGINEER (APPLICATION SOFTWARE)
As a Software Engineer on the Simulations team, you will design, develop, and test our in-house simulation software supporting all SpaceX flight systems. You will program the core simulation infrastructure and collaborate on the building of models of fluids, electronics, and multi-body physics systems. This is a high impact role where you will work across the engineering groups to build high fidelity simulations used to develop cutting-edge software and hardware. Our simulation software is critical to current and future mission successes including Falcon, Falcon Heavy, Dragon, Starlink, and Starship. SpaceX is looking for smart, motivated software engineers who enjoy taking on complex challenges, work well in dynamic environments and care about software best practices.
Help us build world class software that is critical to SpaceX mission to Mars.
RESPONSIBILITIES:
  • Develop and maintain the high-fidelity real-time simulation software used for all vehicles
  • Develop prototypes to prove out key design concepts and quantify technical constraints
  • Maintain the highest standards of excellence, never settle for the status quo
  • Improve reliability and performance of simulation software
  • Work with simulation software users to develop new features and improve user experiences

BASIC QUALIFICATIONS:
  • Bachelor's degree in computer science, engineering, math, or STEM discipline; OR 2+ years of professional experience in software development in lieu of a degree
  • 1+ years development experience in C++

PREFERRED SKILLS AND EXPERIENCE:
  • Strong software design and development skills in C++
  • Understanding of distributed computing systems, networking protocols, memory management, and CPU scheduling
  • Thorough knowledge of classical physics and math (algebra, calculus, Euclidean geometry)
  • Strong skills in debugging, performance optimization and unit testing
  • Creative approach to problem solving
  • Experience with open source C++ simulators such as ROS2 and Gazebo
  • Ability to work effectively in a dynamic environment with changing needs and requirements
  • Ability to work independently and in a team, take initiative, and communicate effectively

ADDITIONAL REQUIREMENTS:
  • Willing to work extended hours and weekends when needed

COMPENSATION AND BENEFITS:
Pay Range:
Software Engineer/Level I: $125,000.00 - $150,000.00/per year
Software Engineer/Level II: $145,000.00 - $175,000.00/per year
Your actual level and base salary will be determined on a case-by-case basis and may vary based on the following considerations: job-related knowledge and skills, education, and experience.
Base salary is just one part of your total rewards package at SpaceX. You may also be eligible for long-term incentives, in the form of company stock, stock options, or long-term cash awards, as well as potential discretionary bonuses and the ability to purchase additional stock at a discount through an Employee Stock Purchase Plan. You will also receive access to comprehensive medical, vision, and dental coverage, access to a 401(k) retirement plan, short & long-term disability insurance, life insurance, paid parental leave, and various other discounts and perks. You may also accrue 3 weeks of paid vacation & will be eligible for 10 or more paid holidays per year. Employees accrue paid sick leave pursuant to Company policy which satisfies or exceeds the accrual, carryover, and use requirements of the law.
ITAR REQUIREMENTS:
    Learn more about the ITAR here.

SpaceX is an Equal Opportunity Employer; employment with SpaceX is governed on the basis of merit, competence and qualifications and will not be influenced in any manner by 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.
Applicants wishing to view a copy of SpaceX's Affirmative Action Plan for veterans and individuals with disabilities, or applicants requiring reasonable accommodation to the application/interview process should reach out to

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About SpaceX

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Industry

Aerospace product and parts manufacturing, data services, guided missile and space vehicle manufacturing and satellite telecommunications

Company size

1,001 - 5,000 Employees

Headquarters location

Hawthorne, CA, US

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