Senior Mechanical Design Engineer

Equans UK & Ireland – Manchester (full‑time)

• 
  
• Lead the design of HVAC systems, heat pumps, and building automation for decarbonisation and sustainable retrofit projects.
  
• Produce detailed designs from RIBA Stage 2 to 5, including load calculations, equipment sizing, ductwork and pipework layout, schematics, schedules, DSEAR assessments, and technical reports.
  
• Integrate mechanical systems with electrical infrastructure and low‑carbon technologies for retrofit and new‑build projects.
  
• Support energy modelling and performance simulations using IES, Energy Pro, PVsol, Termis, NEMO, Netsim, and other tools.
  
• Lead mechanical design packages on multi‑disciplinary projects; check, QA, and sign off designs according to CIBSE Guides, BS EN standards, and UK Building Regulations (Part L, Part F, Part G).
  
• Participate in HAZOP and LOPA discussions and help identify design risks, contributing to risk mitigation and risk register management.
  
• Manage the full project lifecycle, ensuring delivery on time and within budget, and conduct design reviews to verify compliance with safety and regulatory standards.
  

• 
  
• Coordinate and manage mechanical and energy system design for seamless project execution.
  
• Produce technical reports, drawings, and specifications.
  
• Lead client and contractor discussions, including technical presentations.
  
• Mentor junior engineers and enhance team capability.
  
• Support bids, scopes of work, and fee proposals with commercial awareness.
  
• Organise multiple concurrent projects and deadlines effectively.
  

• 
  
• Degree in Mechanical Engineering or Building Services Engineering (BEng or equivalent).
  
• Chartered Engineer status (CEng) or working towards.
  
• Proven experience in heat‑pump design, low‑temperature heating solutions, and hybrid systems.
  
• Experience with heat networks and utilities from feasibility through to connection design.
  
• Strong background in mechanical building services design with practical experience.
  
• Proficiency in AutoCAD and familiarity with BIM workflows (Revit desirable).
  
• Experience in design management, risk assessment and project delivery of sustainable retrofit, low‑carbon technologies, and energy efficiency projects.
  
• Experience working on full RIBA stages in multidisciplinary teams.
  
• Experience in public sector or funding‑driven decarbonisation projects (PSDS, WH/SHDF).
  
• Knowledge of electrical building services is an advantage.
  

• 
  
• Competitive salary and benefit package.
  
• 25 days annual leave (+ public holidays).
  
• Life Cover equivalent to 2× annual salary.
  
• Employee discount shopping schemes, gym membership discounts, cycle‑to‑work scheme, holiday purchase scheme, and 2 corporate social responsibility days per year.
  
• Broad learning opportunities: professional qualifications, training and personal support programmes.
  
• Attractive Employee Referral Rewards Scheme and access to growing employee networks.
  
• 24/7 Employee Assistance Programme and wellbeing app.
  

Equans is an equal opportunity employer. We encourage applications from women, ethnically diverse individuals, people with disabilities, and all candidates protected under the Equality Act 2010.

Only considerations for residency: you must have evidence of the right to work in the UK. Relocation packages are not available for this role.

Communication for this role – all enquiries should be directed to the Equans Resourcing Team.

• 
  
• Mid‑Senior level
  

• 
  
• Full‑time
  

• 
  
• Engineering and Information Technology