Senior / Principal Design Engineer - Building Services (Mechanical or Electrical) Location: Cambridge, UK Salary: £70,000 - £85,000 (DOE) Company: A forward-thinking, people-first consultancy with a thriving culture and ambitious growth plans About the RoleWe're seeking a dynamic Senior or Principal Design Engineer to join our expanding Building Services team in Cambridge. Whether your expertise lies in mechanical or electrical design, this role offers the opportunity to lead high-impact projects, mentor rising talent, and shape the future of sustainable building design.You'll be part of a collaborative, values-driven organisation that champions innovation, professional development, and a healthy work-life balance. Our culture is built on trust, curiosity, and a shared commitment to excellence.️ Key Responsibilities Lead the design and delivery of complex building services projects across various sectors (commercial, education, healthcare, etc.) Provide technical leadership and quality assurance throughout the design lifecycle Collaborate with multidisciplinary teams, clients, and stakeholders to ensure seamless project execution Mentor and support junior engineers, fostering growth and technical development Contribute to resource planning, fee proposals, and strategic decision-making Stay abreast of industry trends and drive innovation in sustainable design practices What We're Looking For Degree-qualified in Mechanical or Electrical Engineering (or equivalent) Proven experience in building services design and project delivery Strong leadership and communication skills, with a passion for mentoring Chartered status (or working towards) with CIBSE, IMechE, or IET preferred Proficiency in relevant design software (e.g., Revit, AutoCAD, IES, Dialux) A proactive mindset and a desire to contribute to a growing, purpose-driven organisation Why Join Us? A genuinely supportive and inclusive culture where your voice matters Clear pathways for career progression and professional development Flexible working arrangements and a modern Cambridge office Access to cutting-edge projects that make a real-world impact Regular team socials, wellness initiatives, and community engagement 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. Hays EA is a trading division of Hays Specialist Recruitment Limited and acts as an employment agency for permanent recruitment and employment business for the supply of temporary workers. By applying for this job you accept the T&C's, Privacy Policy and Disclaimers which can be found at (url removed)