Computational Physics Software Engineer Software Engineering · Salt Lake

Overview

Computational Physics Software Engineer

• Location:
  
  Salt Lake City, UT, USA
• Posted on:
  Jan 26, 2026

Passive Logic is the first fully autonomous platform for buildings. We’ve reinvented the fundamental principles of automation to democratize technology, optimize buildings, and reduce the world’s carbon footprint. We are a team of technologists, engineers, and creatives dedicated to making a sustainable impact through real-world solutions.

This is a career-defining opportunity to play a crucial role in a hyper-scale AI company that is transforming the future of autonomous systems, energy, and the built environment. As the Computational Physics Software Engineer, you will play a meaningful role in our AI team developing differentiable physics-based equipment inferencer environment within an AI-driven control engine.

• Build infrastructure:
  Develop and maintain infrastructure for a differentiable multi-physics simulation engine.
• Design interfaces:
  Develop an interface with the object model through Object Relational Mapping.
• Control path support:
  Provide an infrastructure to support Passive Logic’s control path predictor and front-end simulation environments.
• Develop autonomous systems:
  Develop robust autonomous software that must run with no human supervision for decades.
• Ensure robust systems:
  Use thoughtful architecture design, documentation, unit testing, integration testing, profiling, and collaboration with the Formal Methods team to ensure this robustness.
• Collaboration:
  
  Collaborate with the Digital Twins team for physics optimization and collaborate with the Compiler team for accelerator approaches.

• Proven experience:
  
  Strong proficiency in systems programming languages such as Swift, Rust, C++, or Java, and experience working with large codebases with non-trivial architecture beyond small programs.
• Exceptional communication skills:
  Excellent interpersonal skills and teamwork.
• Organized and strategic:
  Experience with software design, design patterns, and software architecture.
• Collaborative mindset:
  Strong motivation towards Passive Logic’s mission.
• Adaptability:
  Comfortable in a fast-paced startup environment, eager to learn and innovate.
• Problem solving:
  Proactive problem solver who takes ownership.
• You should have:
  Experience with code performance and memory optimization; concurrency, threads, processes, Lib-dispatch/GCD; GPU programming, high-performance computing, and scientific computing; vector, SIMD, and tensor methods; strong math and numerical methods.
• A relevant educational background: BS, MS, or PhD in software engineering, computer science, applied mathematics, physics or related engineering degrees.
• Varied programming and domain experience:
  Swift, auto-differentiation, systems modeling, energy or electromechanical systems, and/or autonomous systems.
• Familiarity with the startup environment:
  Experience collaborating in a startup.

• Competitive compensation
• Generous equity share package
• Medical, dental and vision coverage
• Disability and life Insurance options
• Flex PTO
• Team-building events
• Free catered lunch in the office Monday — Friday
• Free ski pass (We are at the base of Big Cottonwood Canyon)
• Free National Park pass

• A cover letter telling us why you re the perfect candidate for Passive Logic
• A resume
• Extra mile — include a description of a project you personally created, devised, built, managed, organized, or designed that was of your own self-initiative

Diversity, inclusion, and belonging is woven into our values and everything we do. We welcome all—come as you are and bring your whole self. We are proud to be an Equal Opportunity Employer. We celebrate diversity every day by maintaining a safe and inclusive environment for our employees at every stage of their careers.

Passive Logic enables autonomy for controlled systems and unlocks collaboration between teams to manage those systems. Passive Logic has reimagined how we design, build, operate, maintain, and manage infrastructural robots, whose current technology has remained unchanged for decades. By using revolutionary physics-based Quantum digital twins and leveraging the world’s fastest AI compiler to simulate future-forward controls, Passive Logic empowers users to easily create their own generative digital twins in minutes to launch autonomous control.

This control optimizes for energy use, equipment longevity, and occupant comfort levels in real time for the system’s lifetime. Autonomous control lays the foundation for decarbonization at scale and enables truly smart, connected cities. Passive Logic is backed by leading investors including nVentures, Era Ventures, Keyframe Capital, Addition, RET Ventures, noa (formerly A/O Proptech), and Brookfield Growth.

Founded in 2016
• Co-workers About 130

See more open positions at Passive Logic