Mechanical Design Engineer - Building Services
South East (Office-Based with Project Engagement as Required)
£50,000 - £60,000 per annum + Benefits
Full-time, Permanent

Low carbon focus. Design ownership. Projects with real impact.

A well-established and expanding M&E contractor is seeking a Mechanical Design Engineer to join its growing in-house design team. Working closely with the Design Manager, you'll be responsible for producing technically sound and energy-efficient mechanical designs across a range of education, commercial, residential, and mixed-use developments.

You'll play a hands-on role in the design process from Stage 3/4 onwards—creating detailed layouts, calculations, specifications, and modelling reports using industry-standard software. This role suits a technically capable engineer who enjoys responsibility, is passionate about low-carbon design, and is confident managing their own workload within a collaborative team.

Why this opportunity

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Structured role within a growing in-house design department

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Wide range of live and upcoming projects across multiple sectors

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Opportunity to take ownership of mechanical design output from early surveys through to delivery

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Competitive salary, ongoing training, and long-term development potential

Key responsibilities

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Produce mechanical designs, specifications, calculations and schedules in line with project requirements

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Review contract documentation, Stage 4/5 requirements and ensure technical compliance

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Support internal and external coordination with project teams, consultants and clients

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Monitor drawing production and review for technical accuracy and consistency prior to issue

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Attend site surveys, capturing data using Lidar scanning and converting into usable design input

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Contribute to energy modelling assessments and sustainability-driven design documentation

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Respond to design RFIs and maintain clear records of revisions and decision-making

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Support the wider team in ensuring design work is delivered on time and to high quality standards

What we're looking for

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Degree (or equivalent) in Building Services Engineering or Mechanical Engineering

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Demonstrable experience in mechanical design within the building services sector

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Proficiency in relevant software tools such as Revit, Hevacomp, and AutoCAD

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Good understanding of current Building Regulations and sustainable design principles

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Passion for low-carbon, energy-efficient system design

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Ability to plan and manage multiple projects concurrently

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Strong written and verbal communication skills

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Full UK driving licence

The package

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£50,000 - £60,000 per annum depending on experience

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Company pension scheme

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21 days annual leave plus bank holidays

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Ongoing training and development opportunities

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Annual career progression reviews

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Supportive design team and structured leadership

If you're a mechanically focused design engineer looking to take the next step in your career—and you want to do so in a team that values sustainability, technical quality and clear communication—this could be the right opportunity.

Apply today to begin a confidential conversation