HVAC-R Design Engineer – 80% / 100% - CDI

Ref 2588223 | Date: 29 Oct 2026

CGC Energie SA

As part of the development of our activities, CGC Energie SA is looking for an HVAC-R Design Engineer to strengthen its Maintenance Works department.

A company active in the field of technical building installations, CGC Energie SA accompanies its clients in the design, implementation, operation, and optimization of their energy installations.

HVAC-R Design Engineer – 80% / 100% - CDI

Location: Thônex, 1226 (5 min TPG, 10 min Leman Express)

Start: immediate or to be agreed

Social: Complementary accident coverage and advantageous LPP

Daily: Company vehicle

Your Mission

Under the responsibility of the Maintenance department Works Manager, you will intervene in all phases of HVAC-R project studies, from the analysis of needs to the support of their implementation. As a true technical reference, you will ensure the link between client needs, the design of solutions, and their implementation on the ground.

Studies and design (SIA Phases 1, 2 and 31 to 33)

• Analyze client needs, specifications, and technical constraints;
• Design and dimension HVAC-R installations;
• Perform or check technical calculations: thermal balances, flows, powers, pressure losses, hydraulic and air networks;
• Develop and check schematic diagrams, plans, and technical documents;
• Study variants allowing for the optimization of energy performance, costs, and the operation of installations;
• Guarantee the technical feasibility of solutions in collaboration with the works and operation teams.

Costing and offers

• Perform measurements, estimations, and costing;
• Consult suppliers and subcontractors and analyze their proposals;
• Participate in the development of technical and commercial offers;
• Research variants and optimizations allowing to improve the relevance and competitiveness of offers;
• Participate, when necessary, in the development and negotiation phases.

Project monitoring and client relations

• Be the technical interlocutor for clients, mandatories, and partners;
• Advise clients and propose solutions adapted to their needs and constraints;
• Identify and coordinate the authorizations and administrative steps necessary for the projects;
• Ensure efficient transmission of information to the teams in charge of implementation;
• Provide your technical expertise during the execution of works and contribute to the resolution of problems encountered.

Quality, compliance, and safety

• Ensure compliance with applicable standards, prescriptions, and regulations;
• Integrate quality, safety, and energy efficiency requirements from the design stage;
• Identify technical risks and constraints and propose adapted measures;
• Participate in the continuous improvement of working methods and the quality of services.

Your Profile

• HES, EPF engineering degree or equivalent training in climate, thermal, energy, or HVAC engineering;
• Minimum of 5 years of experience in HVAC studies in Switzerland;
• Solid knowledge of heating, ventilation, air conditioning, and hydraulics;
• Good knowledge of air treatment, thermal balances, and building physics;
• Knowledge of regulation and building technical management;
• Good mastery of the standards and prescriptions applicable in Switzerland as well as SIA service phases;
• Knowledge of Revit and/or AutoCAD is an asset;
• Experience in the implementation or monitoring of works is also an advantage.

We look forward to receiving your application (CV, Diplomas, Work certificates) via the platform

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