Senior Mechanical Building Services Engineer

Job description

Intermediate / Senior Mechanical Building Services Engineer

Cardiff

£45,000 – £60,000 DOE + Benefits

The Opportunity

We’re looking for an Intermediate / Senior Mechanical Building Services Engineer to join a growing in-house design team delivering major commercial, healthcare, education, industrial and public-sector projects.

This is a role with real technical ownership. You’ll work across projects from concept through to construction, with the opportunity to lead designs, work directly with clients and, at Senior level, mentor junior engineers.

What You’ll Be Doing

• Design mechanical building services from concept to detailed design
• Deliver HVAC, heating, cooling, LTHW, CHW and public health systems
• Carry out heating, cooling, hydraulic and pipe sizing calculations
• Design plantrooms and select mechanical equipment
• Produce specifications, reports and technical schedules
• Coordinate designs across Revit / BIM and multidisciplinary teams
• Attend client, design and site meetings
• Support projects through construction, commissioning and handover
• Review technical submissions and resolve contractor queries

What We’re Looking For

• Strong background in Mechanical Building Services Design
• Consultancy or Design & Build experience
• Confident with Revit and AutoCAD
• Experience with MagiCAD, Hevacomp, IES VE or TAS
• Strong technical understanding of HVAC and mechanical systems
• Ability to manage multiple projects and work to deadlines
• Excellent communication and coordination skills

What's On Offer

• £45,000 – £60,000 DOE
• Professional membership support – CIBSE / IMechE
• CPD and technical training
• Genuine progression into Senior / Principal-level roles
• High-quality, technically challenging projects
• Growing design team with long-term opportunities
• Supportive, collaborative working environment

The Opportunity

If you're a Mechanical Building Services Engineer looking for better projects, greater responsibility and a clear route to progress, this is an opportunity worth exploring.

Extra information

Status

Open

Education Level

Secondary School

Location

Cardiff

Type of Contract

Full-time jobs

Published at

20-08-2026

Profession type

Technical

Full UK/EU driving license preferred

No

Car Preferred

No

Must be eligible to work in the EU

No

Cover Letter Required

No

Languages

English