Senior Unity Programmer

CSE Software•East Peoria, IL

2d•Remote

About The Position

Simformotion™ LLC, the licensee for Cat® Simulators for Caterpillar Inc., is seeking an experienced 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 initiatives. If you enjoy solving complex technical challenges in a collaborative, fast-paced environment, we want to hear from you. Role Summary: The Senior Unity Programmer is a key technical contributor on simulation products, combining hands-on Unity development with system design, performance optimization, and collaboration across development disciplines.

Requirements

6+ years of professional programming experience in the simulation, game, or interactive software industry, or a related field.
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.

Nice To Haves

Experience with .NET or .NET Standard.
Experience with Unity ECS, DOTS, Jobs, Burst, or other data-oriented workflows.
Experience working with terrain systems, world-building tools, or large environment workflows in Unity.
Experience developing or supporting systems involving constraints, interaction-heavy mechanics, or simulation-oriented features.
Experience with large system integration, including enterprise systems, hardware interfaces, APIs, or external software platforms.
Experience developing simulation or serious game applications for training and educational use cases.
Experience in construction, heavy equipment, industrial operations, or workforce training environments.
Familiarity with networking concepts, including socket communication, REST APIs, and client-server data exchange.
Familiarity with mixed reality, virtual reality, or augmented reality development.
Experience with shader development, rendering pipelines, or other advanced Unity systems.
Familiarity with Agile development methodologies such as Scrum or Kanban.
Experience mentoring developers or contributing to technical leadership initiatives.

Responsibilities

Develop and improve Unity-based simulation systems.
Support technical decision-making.
Mentor team members when appropriate.
Ensure that simulation products are reliable, maintainable, and technically strong.
Lead the design and implementation of complex systems and tools within Unity.
Develop and maintain simulation products using Unity, focusing on training logic, simulation systems, performance optimization, and maintainability.
Build, refine, and troubleshoot systems involving physical simulation behaviors, terrain-driven workflows, constraints, interactions, and other real-time simulation processes.
Collaborate closely with designers, artists, producers, QA, and other developers to implement features and functionality.
Write clean, maintainable, documented, and efficient code in C#.
Debug, profile, and optimize code for performance, stability, and scalability across multiple platforms.
Contribute to architecture decisions for systems leveraged across multiple products or large feature sets.
Participate in the full development lifecycle, from concept through delivery, in an agile work environment.
Assist in the integration of 3D assets, animations, sound, external systems, and hardware interfaces into Unity-based applications.
Contribute to technical design documentation, code reviews, and development best practices.
Mentor junior developers and help foster a culture of continuous learning and technical excellence.