Every commercial refrigeration and heat pump installation Karnot delivers requires stamped and sealed mechanical drawings before a building permit can be issued. That covers equipment schedules, refrigerant piping schematics, plant room layouts, ventilation designs, and fire safety submissions to BFP. Today we depend on external consultants to provide that authority. This role ends that dependency.
As Senior Mechanical Engineer (PME), you own Karnot's mechanical design function. Your primary work is refrigeration and HVAC system design — R290 (propane) heat pumps for the iHEAT range, transcritical CO₂ refrigeration for iCOOL, and hydronic distribution via iZONE. You will apply ASHRAE 15 refrigerant safety classification to every project and produce the BFP Fire Safety Evaluation Clearance documentation required for refrigerant plant rooms. You will also hold Karnot's PME-dependent PCAB STE credentials.
This is the second senior engineering hire at Karnot and the first PME. You will set design standards, build the mechanical drawing library, and mentor the Design Mechanical Engineer hired alongside you. The salary range reflects a base — experienced candidates with a strong refrigeration background should expect negotiation.
Karnot's product engineering uses EN 378 (European refrigeration safety and environmental impact standard) as its primary design reference because it gives more detailed guidance on R290 and CO₂ system design, charge limits, ventilation requirements, and pressure vessel classification. ASHRAE 15 is also referenced where relevant and is often required for BFP submissions by name. Candidates familiar with either standard will adapt quickly.
PCAB (Philippine Contractors Accreditation Board) requires a licensed engineer as Supervising Technical Employee (STE) in the relevant discipline to hold a contractor classification. For mechanical works, the STE must be a PME. Without an in-house PME, Karnot must subcontract or partner for mechanical permit work. This hire removes that bottleneck and is essential to Karnot's project delivery independence.
R290 (propane) has a Global Warming Potential of 3 — far lower than conventional refrigerants — but it is Class A3 flammable. Karnot designs all plant rooms to EN 378 / ASHRAE 15 ventilation and charge-limit requirements, and the PEE designs Ex-rated electrical installations for any hazardous zone. The PME's role includes specifying ventilation, emergency shutoff, and leak detection as part of every plant room design.
Not essential, but useful. iCOOL is the CO₂ refrigeration product line — transcritical CO₂ operates at pressures up to 130 bar on the high side. Karnot will provide technical induction training on CO₂ system design. Candidates with a strong conventional refrigeration background and a willingness to learn are welcome to apply.
Send your CV and a brief note covering your PME registration number and your most relevant refrigeration project. We read every application personally.
Apply by Email