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Freelance Simulation Software Engineer Jobs (NOW HIRING)

K2 Space

Simulation Software Engineer

Los Angeles, CA

$123K - $200K/yr

... software engineering * Master's or PhD in physics, aerospace engineering, or a STEM field * Experience working in Rust production environments * Experience defining and creating simulation systems

K2 Space

Simulation Software Engineer

Los Angeles, CA · On-site

$123K - $200K/yr

... software engineering * Master's or PhD in physics, aerospace engineering, or a STEM field * Experience working in Rust production environments * Experience defining and creating simulation systems

Toyon

Simulation Software Engineer

Goleta, CA · On-site

$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 ...

Apple

Camera Simulation Software Engineer

San Diego, CA

$120.30K - $181.20K/yr

Camera Simulation Software Engineer Apple is where individual imaginations gather together, committing to the values that lead to great work. Every new product we build, service we create, or Apple ...

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 ...

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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 Jun 4, 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, and why are they important?

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 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.

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.

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Freelance Simulation Software Engineer jobs near you
Battery Simulation Software Engineer

Battery Simulation Software Engineer

OSI Engineering, Inc.

Cupertino, CA • Hybrid

$69 - $84/hr

Other

Posted 16 days ago

Job description

A globally leading consumer device company headquartered in Cupertino, CA is looking for Battery Simulation Software Engineer to join their Battery Systems team. 
Job Responsibilities:

  • Develop and maintain simulation tools and algorithms to support battery research and product development
  • Collaborate with cross-functional teams including algorithm, systems, test, and hardware engineers
  • Write automation scripts to streamline engineering workflows
  • Debug, test, and refine algorithm code
  • Manage release configuration files and related software updates
  • Build and maintain interfaces connecting internally developed tools
  • Support integration and communication across different parts of the software stack
  • Ensure code quality and maintain reliable software performance
  • Contribute software solutions that support hardware and systems engineering efforts


Minimum Qualifications:
· M.S. or Ph.D. in Electrical Engineering, Applied Physics, Computer Science, or equivalent
· Master''s degree or equivalent job-related experience in Electrical Engineering, Physics, Computer Science, or a related field
· Proficiency in C++ and Python for performance-critical software and simulation development
· Experience with physics-based modeling of electrical components for simulation purposes
· Hands-on experience writing automation scripts and debugging complex software systems
Preferred Qualifications:
· Familiarity with both frontend and backend software development — experience spanning different layers of a software stack is a strong plus
· Experience developing user-facing interfaces or APIs that connect disparate internal tools
· Background in battery systems, electrochemistry, or energy storage (beneficial but not required)
· Ability to independently learn new technologies, prototype solutions, and integrate them into existing workflows
· Strong debugging skills with the ability to isolate and resolve issues across algorithm, configuration, and tooling layers
· Excellent spoken and written communication skills
· Experience working with cross-functional teams spanning software, hardware, and systems engineering
Type: Contract
Duration: 12 months with extension
Work Location: Cupertino, CA (hybrid or onsite)
Pay range: $69.00 - $84.00 ph (DOE)

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