Principle/Senior Mechanical Design Engineer in London

Reference: 4801201Job ID: 5396367Posted: 2026-11-07Closing date: 2027-02-05Location: NorwichSalary: 75000 (per annum)Job type: PermanentWorking pattern: Full timeIndustry: Construction / Building ServicesCompany: HaysConsultant: Craig WattsHays office: Leicester — 1st & 2nd Floor, 2 Colton SquarePhone: 0116 25380987Email: craig.watts@hays.comJob Title: Senior / Principal Mechanical Design Engineer (Building Services)Location: Norwich (Hybrid Working Available) Salary: 60,000 – 75,000 + BenefitsAbout the CompanyWe are a well-established and growing multidisciplinary consultancy based in Norwich, offering integrated expertise across Building Services (MEP), Civil Engineering, and Architecture. Our collaborative and design-led approach enables us to deliver high-quality, innovative solutions across a wide variety of complex and large-scale developments.As part of our continued growth, we are looking to strengthen our Building Services team with the appointment of a Senior / Principal Mechanical Design Engineer.The RoleThis is an excellent opportunity for an experienced Mechanical Engineer to take on a senior role within a collaborative MEP team. You will play a key role in delivering high-quality mechanical designs while supporting project leadership, mentoring junior engineers, and contributing to client relationships.The role offers a balance between technical delivery, project leadership, and team development, with clear progression opportunities.Key ResponsibilitiesLead the mechanical design of Building Services systems across a range of projectsDeliver technically robust solutions from concept through to detailed designTake ownership of project elements, ensuring delivery on time and within budgetSupport and mentor junior engineers and techniciansCollaborate closely with electrical, civil, and architectural teams on multidisciplinary schemesAttend client meetings and contribute to maintaining strong relationshipsEnsure compliance with relevant regulations, standards, and best practiceContribute to continuous improvement and innovation across the teamAbout YouProven experience in a Building Services / MEP consultancy environmentStrong background in mechanical design (HVAC, heating, cooling, ventilation systems)Experience working on a range of project types and valuesAbility to manage workload independently and contribute to project deliveryStrong communication and collaboration skillsExperience mentoring or supporting junior team members (especially at Principal level)Chartered status (or working towards) is desirableWhat We OfferWe are a flexible and people-focused organisation, offering:Hybrid workingFlexible start and finish times to support work-life balanceA strong emphasis on employee wellbeingA collaborative and supportive working cultureClear progression opportunities within a growing businessCompetitive salary of 60,000 – 75,000 + benefitsWhy Join Us?You’ll be joining a forward-thinking consultancy where Building Services is central to our offering. This is a great opportunity to work on impactful projects, develop your career, and be part of a supportive, multidisciplinary environment that values flexibility and trust.What you need to do now If you're interested in this role, click 'apply now' to forward an up-to-date copy of your CV, or call us now. If this job isn't quite right for you, but you are looking for a new position, please contact us for a confidential discussion about your career. #4801201 - Craig Watts