Senior Mechanical Building Services Designer

Parkinson Gray Associates delivers a proven service to some of the leading consulting, engineering, and Contracting businesses within the British construction industry, predominantly across the building services, energy, and Sustainability sectors.

Our client is a highly respected engineering consultancy recognised for delivering technically complex building services solutions across some of the UK’s most demanding construction environments. Their work spans large-scale commercial developments, advanced manufacturing facilities, high-specification workplaces, critical infrastructure and technically intensive refurbishment projects where precision engineering and coordinated delivery are essential.

Rather than operating as a volume-driven consultancy, the business has built its reputation on technical capability, long-term client partnerships and engineering-led project delivery. Their teams are heavily involved at every stage of the design process - from early-stage feasibility and performance modelling through to detailed coordination, construction support and commissioning.

The Manchester office has become a key technical hub within the wider business, combining experienced engineers, BIM specialists and project delivery professionals within a collaborative environment that encourages autonomy, technical input and continuous development. Engineers within the business are given genuine responsibility, exposure to major projects and the opportunity to contribute to innovative low‑carbon and sustainable building solutions.

With a strong pipeline of secured work and continued investment across digital engineering and BIM capability, the company is entering another phase of strategic growth, making this an excellent opportunity for an experienced Mechanical Designer seeking long‑term progression within a technically ambitious consultancy.

Location:

Manchester City Centre
Salary: £50,000 - £60,000 (depending on experience)

Employment Type:

Permanent

This role will suit an experienced Mechanical Designer who enjoys technically challenging projects and wants to work in an environment where engineering quality is prioritised over volume production.

You will be involved in the design and coordination of mechanical building services systems from concept through to detailed design and construction support. The position requires a strong technical understanding of HVAC and public health systems alongside the ability to coordinate effectively within multidisciplinary BIM‑led project environments.

The successful candidate will play a key role in supporting senior engineers, mentoring junior technicians and ensuring the technical delivery of projects aligns with programme, specification and client expectations.

• Develop detailed mechanical building services designs for a range of complex construction projects across multiple sectors.
• Produce coordinated HVAC and public health layouts using Revit and AutoCAD within BIM Level 2 project environments.
• Prepare detailed mechanical design documentation including equipment schedules, schematics, technical specifications and coordinated services drawings.
• Undertake ventilation, heating and cooling load calculations alongside pipework and ductwork sizing using industry‑recognised design software.
• Coordinate mechanical services integration with electrical, structural and architectural disciplines to ensure clash‑free design delivery.
• Support the development of low‑energy and decarbonisation‑focused design strategies including heat pump systems, heat recovery technologies and energy‑efficient HVAC solutions.
• Participate in technical design reviews, project meetings and client coordination workshops.
• Conduct site surveys, inspections and construction‑stage support activities to ensure installation quality and compliance with design intent.
• Assist with mentoring junior designers and technicians within the mechanical team.
• Maintain awareness of current industry regulations, British Standards, CIBSE guidance and emerging technologies within the building services sector.

• Demonstrable experience within a Mechanical Design or Building Services…