Senior Unity Programmer — Remote Real-Time Simulations

Simformotion LLC; East Peoria (IL); On-site; USD 90,000 - 120,000; Full time

Benefits offered by this job

401(k)

Health insurance

Paid holidays

Paid time off

Job summary

Simformotion LLC, the licensee for Cat Simulators for Caterpillar Inc., is seeking a Senior Unity Programmer to join our Simulation Development team. In this role, you will help design, build, and improve technically complex Unity-based simulation products used for training and education.

The ideal candidate brings deep Unity and C# experience, a strong understanding of large-scale, physics-based systems, and the ability to work across existing codebases and cross-functional technical

Qualifications

• 6+ years of professional programming experience in the simulation, game, or interactive software industry.
• Expert-level proficiency with Unity and C#.
• Strong experience developing systems and features within Unity across a variety of technical domains.
• General understanding of real-time simulation principles, including how physical systems, interactions, and performance constraints affect application behavior.
• Strong knowledge of object-oriented programming, design patterns, and software development best practices.
• Solid understanding and hands‑on experience with profiling and optimization techniques to enhance performance and stability.
• Experience working with source/version control systems such as Git.
• Strong problem‑solving skills and the ability to tackle complex technical challenges.
• Ability to work independently and collaboratively on time-sensitive projects with changing technical priorities.
• Excellent communication and interpersonal skills, with the ability to clearly articulate technical concepts.

Responsibilities

• Lead design and implementation of complex systems and tools within Unity.
• Developing and maintaining simulation products using Unity, focusing on training logic, simulation systems, performance optimization, and maintainability.
• Building, refining, and troubleshooting systems involving physical simulation behaviors, terrain-driven workflows, constraints, interactions, and other real-time simulation processes.
• Collaborating closely with designers, artists, producers, QA, and other developers to implement features and functionality.
• Writing clean, maintainable, documented, and efficient code in C#.
• Debugging, profiling, and optimizing code for performance, stability, and scalability across multiple platforms.
• Contributing to architecture decisions for systems leveraged across multiple products or large feature sets.
• Participating in the full development lifecycle, from concept through delivery, in an agile work environment.
• Assisting in the integration of 3D assets, animations, sound, external systems, and hardware interfaces into Unity-based applications.
• Contributing to technical design documentation, code reviews, and development best practices.
• Mentoring junior developers and helping foster a culture of continuous learning and technical excellence.

Skills

Strong programming skills

Unity expertise

C# programming

Object-oriented programming

Debugging & optimization

Team mentoring

Communication skills

Tools

Unity

C#

DOTS / ECS

Git

Visual Studio

Job description

Simformotion LLC, the licensee for Cat Simulators for Caterpillar Inc., is seeking a Senior Unity Programmer to join our Simulation Development team. In this role, you will help design, build, and improve technically complex Unity-based simulation products used for training and education.

The ideal candidate brings deep Unity and C# experience, a strong understanding of large-scale, physics-based systems, and the ability to work across existing codebases and cross-functional technical