PassiveLogic · 1 day ago
Thermal Systems Digital Twin Engineer Software Engineering · Salt Lake City
Salt Lake City, UT
Full-time
Onsite
Mid LevelPassiveLogic is the first fully autonomous platform for buildings, dedicated to reducing energy consumption and carbon footprint. The Thermal Systems Digital Twin Engineer will develop physics-based models for building and HVAC components to support simulation and optimization in the company's AI-driven control systems.
Artificial Intelligence (AI)Green BuildingGreenTechHardwareReal EstateSmart BuildingSoftware
Responsibilities
Defines and develops fundamental component templates, in addition to managing the component template evolution process
Develop mathematical models for equipment, thermo-physical systems, and building simulation
Standardize and validate physics-based models for use by the PassiveLogic control engine for optimized autonomous control of buildings
Contribute to both model development and software implementation
Qualification
Required
Master's or Ph.D. in Mechanical Engineering, Aerospace Engineering, Chemical Engineering, Applied Physics, or a related field, with a focus on thermal-fluid sciences
Strong understanding of thermodynamics, heat transfer, and fluid dynamics
Hands-on experience in first-principles (physics-based) modeling of thermodynamic, thermo-chemical, or thermo-mechanical devices (as opposed to curve-fitted models or off-the-shelf FEA usage)
Experience with object-oriented simulation tools such as Modelica (or Dymola), Simscape, etc
Understanding of buildings, mechanical systems, and process control
Strong skills in numerical methods, mathematical modeling, and data analysis
Interest in (or preferably, experience with) computer programming and/or software development
Exceptional communication skills: strong desire to be an outstanding teammate with a collaborative and interpersonal communication style
Organizational and strategic mindset: ability to establish clear workflows for developing and refining models, as well as a structured approach to validating them, ensuring consistency and accuracy
Collaborative mindset: openness to participating in a feedback-driven work process to guide improvements and drive growth
Adaptability: comfortable in a fast-paced startup environment; eager to learn, iterate, and innovate
Problem-solving orientation: you own this role. When issues arise, be the empowered force that solves them—rolling up your sleeves and taking initiative
Preferred
Modeling experience: Good analysis and problem-solving skills; experience with FEA modeling techniques
Fundamental building knowledge: Knowledge of the fundamentals of building energy and/or HVAC systems
Strong programming skills: Including but not limited to: Swift, Matlab, C++, C, etc
Experience in HVAC Systems modeling
HVAC Equipment Modeling experience: Heat pump, boiler, storage tank, solar thermal panels etc
Experience in git version control
Experience/familiarity with: Graph theory and Bond Graph modeling approaches
EnergyPlus
Swift language development experience (S4TF even better)
Heuristic, statistical, or machine learning methods
Working in a startup
Benefits
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
Company
PassiveLogic
The first platform for generalized autonomy: powered by Quantum, PassiveLogic empowers people to solve the largest climate challenges.
Founded in 2016
51-200 employees
H1B Sponsorship
PassiveLogic has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (9)
2024 (6)
2023 (5)
2022 (4)
2021 (2)
Funding
Current Stage
Growth StageTotal Funding
$154.15MKey Investors
noaNVIDIABrookfield Growth
2025-09-16Series C· $74M
2022-09-20Convertible Note· $15M
2022-04-12Convertible Note· $12M
Leadership Team
Troy Harvey
CEO
Jeremy Fillingim
CTO
Recent News
PR Newswire UK
2025-10-07
vcnewsdaily.com
2025-09-19
Venture Capital
2025-09-19
Company data provided by crunchbase