HVAC Design Engineer - Controlled Environments

A well-established UK contractor specialising in high-specification controlled environments is seeking a mid-level HVAC Design Engineer to strengthen its in-house design capability. The business delivers technically demanding cleanroom and critical ventilation projects across life sciences, healthcare and advanced manufacturing sectors.

This is a performance-led design role focused on precision airflow, environmental stability and compliance-driven engineering. This role would suit a technically capable mid-level engineer currently operating as a Mechanical Design Engineer, Building Services Design Engineer, HVAC Design Engineer, Cleanroom Design Engineer, Ventilation Design Engineer or Environmental Control Engineer looking to step into a more specialist, performance-led environment.

You will take responsibility for the mechanical design of HVAC and ventilation systems within controlled and cleanroom environments, translating performance briefs into engineered solutions.

Duties will include:

Heat loss, heat gain and cooling load calculations

Psychrometric analysis and humidity control strategies

Airflow modelling and air change rate calculations

Design of pressure cascades and contamination control strategies

Specification of AHUs, HEPA filtration systems, ductwork and associated plant

Production of ventilation schematics and technical design documentation

Technical liaison with Project Managers and site teams through installation

Providing technical support during commissioning and client handover

Requirements

4-5 years' experience in HVAC / mechanical building services design

Strong understanding of psychrometrics, airflow and heat load calculations

Ability to independently size and specify HVAC plant and ventilation systems

Confident interpreting technical briefs and performance specifications

Experience working within a contractor-led, project delivery environment

Cleanroom, laboratory, healthcare or other critical environment experience advantageous

Package

Competitive salary (dependent on experience)

Hybrid working flexibility

Exposure to technically complex, high-specification projects

Long-term progression within a growing specialist contractor

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