Building Systems Engineer

ABOUT US Reframe Systems is a Physical AI and robotics company on a mission to make high-performance housing attainable and abundant in the communities where people want to live. Through our vertically integrated delivery model and highly automated microfactories, we deliver climate-resilient homes and buildings with greater speed and predictability than traditional construction. Our volumetric modular buildings are produced in our Andover, MA microfactory, with a growing pipeline across North America and a new microfactory on the way. We are building a system that balances repeatability with site-responsive design, enabling homes adaptable to each site, community, and customer need. Our cross-disciplinary team brings together architecture, robotics, design engineering, software, factory operations, and field delivery to change how housing gets delivered. We’re reimagining the future of housing through a smarter and more sustainable system that empowers people to live better. Come build it with us. THE ROLE The Building Systems team owns the definition of Reframe's repeatable building system: the standard assemblies, details, components, and interfaces that every project draws from, so project teams can move fast on decisions that have already been made well once. As a Building Systems Engineer, you will define, document, prototype, and continuously improve that system. Your work is deliberately decoupled from day-to-day project execution: your job is to make the next ten projects easier, not to ship this month's modules. Over the next 12 months our product focus is Type 5 low-rise residential (single-family homes, ADUs, and townhomes), and you will help lock in the layered system of standards that supports shared components across those product types. WHAT YOU'LL DO - Define and maintain the standard assemblies and details that make up our building system: structural and envelope recipes, exterior wall assemblies, mate lines, floor cassettes, connection methods, and the interfaces between them - Decide where variation is allowed and where the system is frozen, and track project-specific deviations so exceptions are explicit and time-bound rather than tribal knowledge - Own system-level subsystems end to end, such as the MEPF module interconnect system (circuits, plumbing, and ductwork connections between finished modules) and a scalable electrical system, from research through prototyping with the factory floor to a defined standard detail set - Lead high-impact system optimization initiatives such as enclosed wall panels, exterior insulation strategy, and structural optimization - Translate building science and air-tightness goals into buildable details and repeatable processes - Set product requirement standards for off-the-shelf and finished components (windows, exterior doors, fixtures): what the factory can and cannot receive, communicated clearly to design and procurement - Serve as a manufacturability gate: review and approve new or changed panel types and assemblies before they enter the system - Build mockups and first-article prototypes on the floor or in the yard before design lock, and partner with Manufacturing to define the capabilities and workcells needed to produce what you design - Design for automation as a first principle, so the system we standardize is the system robots and software can build - Maintain change visibility across the organization: what changed, why, who it impacts, and when it should be adopted QUALIFICATIONS - 10+ years of experience in construction products, prefab/modular construction, building envelope, or a related hardware product domain - Deep understanding of light wood-frame construction and at least one of: building science, MEP systems, or structural systems - A systems thinker who is energized by standardization, interfaces, and platform design rather than one-off problem solving - Hands-on: you prototype, you build, and you validate on the floor before you publish a standard…