Computer Aided Design Engineer

Whiteoak Associates; High Wycombe; On-site; GBP 50,000 - 75,000; Full time

Benefits offered by this job

Pension

22 days holiday

Ongoing training

Job summary

Whiteoak Associates is seeking a CAD Design Engineer (Mechanical Plant Rooms) to join a focused team delivering plant room layouts and piping solutions. The role requires hands-on CAD modelling for 2D/3D layouts, coordination with project stakeholders, and ensuring buildability within strict regulatory standards.

You will bridge design and on-site implementation, liaising with PMs and site teams to resolve clashes and provide accurate as-built documentation.

Qualifications

• Proven CAD/modelling experience in Mechanical Services Contractor environments.
• Understanding of mechanical building services and plant room constructability.
• Proficiency in AutoCAD is essential; exposure to Revit is advantageous.
• Strong problem-solving abilities with site liaison experience.

Responsibilities

• Model and coordinate 2D/3D plant room layouts, schematics, and pipework using AutoCAD (primary) and Revit (occasional).
• Review inputs, calculate spatial/containment needs, and specify mechanical equipment with Project Managers.
• Collaborate with structural, electrical, and architectural teams to resolve space conflicts digitally before site works.
• Conduct site surveys and assist site teams to update drawings for as-built documentation.
• Ensure drawings comply with UK Building Regulations, CDM regulations, and safety guidelines.

Skills

CAD modelling

AutoCAD

Plant room design

Coordination with teams

Problem solving

Tools

Revit

Job description

CAD Design Engineer ( Mechanical Plant Rooms)

Salary: £50,000 - £75,000 basic (Depending on Experience) + Pension, 22 Days Holiday, Ongoing Training & Career Progression

Mechanical Services Contractor, with a strong and stable order book secured through 2027 , are seeking a practically minded, mechanically biased CAD Design Engineer who has Plant Room Design experience.

Joining a close-knit, 5-strong design and delivery team you will bridge the gap between engineering design and practical project execution.

Key Responsibilities

• Modelling & Coordination: Produce accurate 2D/3D plant room layouts, schematics, and pipework arrangements using AutoCAD (Primary) and Revit (Occasional).
• Constructability & Specification: Review design inputs, calculate spatial/containment requirements, and specify mechanical equipment (boilers, chillers, pumps) in close collaboration with Project Managers.
• Clash Detection: Collaborate with structural, electrical, and architectural teams to resolve spatial conflicts digitally before materials hit the site.
• Site & Subcontractor Liaison: Conduct site surveys, work alongside site installation teams to troubleshoot practical issues, and amend drawings for as-built documentation.
• Compliance: Ensure all drawings and layouts adhere to UK Building Regulations, CDM regulations, and safety guidelines.

What We Are Looking For

• Proven CAD/modelling experience gained specifically within a Mechanical Services Contractor environment.
• An understanding of mechanical building services, plant room constructability, and basic pipe stress/routing constraints.
• Proficiency in AutoCAD is essential; exposure to Revit or 3D coordination tools is advantageous.
• Excellent problem-solving skills and the confidence to liaise with site teams, and interpret technical specifications