Mechanical Engineer – Building ServicesSouthampton Area | Mechanical Engineer at Engineer, Senior, or Associate Level | Hybrid & Flexible WorkingAre you a Mechanical Building Services Design Engineer ready for your next step? Whether you're building on your experience or already working at a senior or associate level, this is a fantastic opportunity to join a well-established, people-focused consultancy just outside Southampton.You’ll be part of a dynamic, supportive team delivering innovative mechanical design solutions across healthcare, education, and commercial sectors—on projects ranging from small-scale refurbishments to complex, multi-million-pound developments.What You’ll Be DoingIn this role, you’ll lead or support the delivery of mechanical building services designs from early-stage feasibility through to detailed design and tender submissions. You’ll engage directly with clients, collaborate with project teams, and bring a strong technical presence to every stage of the project lifecycle.Your day-to-day will include:

Developing detailed mechanical designs and complete tender packages
Producing technical specifications, cost reports, and project documentation
Coordinating with design teams, clients, contractors, and stakeholders
Overseeing project delivery across all RIBA stages
Preparing load analysis, zoning strategies, and Builders Work requirements
Inputting to fee proposals and managing project programmes
Mentoring junior engineers and helping to shape the next generation of talent
Ensuring compliance with industry standards and best practices

What We’re Looking ForWe're looking for an engineer who is both technically strong and a great team player. Ideally, you’ll bring:

A background in Mechanical Building Services Design (HND/Degree qualified)
Experience across healthcare, education, and/or commercial sectors
Proficiency with design software and strong understanding of industry standards
Membership with CIBSE or working toward it (preferred)
Great communication and client engagement skills
A proactive, self-starting approach to work

The Culture & PerksThis consultancy places genuine emphasis on work-life balance, personal growth, and team cohesion. You’ll find a supportive environment where your development is taken seriously and your work makes a real impact.Benefits include:

28 days annual leave (including bank holidays), plus 3–4 additional paid days over Christmas
Hybrid working and flexible hours to suit your lifestyle
Training & Development pathways designed around you
Aspiring Managers Programme to support leadership goals
Health & Wellbeing initiatives to support your physical and mental health
Regular social events and team-building activities
Enrichment programme for professional and personal growth
Branded workwear provided
On-site parking
Cycle scheme
Complimentary theatre tickets and cultural outings

?? Ready to bring your mechanical design expertise to a consultancy that values you and your career? Whether you're growing into a new level of responsibility or seeking a more rewarding environment, this could be your ideal next step.Get in touch or apply now for a confidential chat!

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