Your new company You'll be joining a well‑established building services consultancy known for delivering high‑quality, sustainable and energy‑efficient engineering solutions. The Leicester team supports a variety of project types across commercial, residential, healthcare, education, industrial and public sector environments. The business places strong emphasis on technical excellence, collaboration and career development, offering a supportive environment for senior engineers to thrive and influence project outcomes. Your new role As a Senior Mechanical Design Engineer, you will take the lead on mechanical design delivery across a range of projects. You will be responsible for producing and overseeing calculations, drawings, specifications and technical reports, while ensuring design quality, programme and client expectations are met.You will work closely with multidisciplinary colleagues, represent the consultancy in meetings, guide junior engineers, and contribute to project strategy and decision‑making. You'll also support the integration of low‑carbon and renewable technologies, assist with site inspections, and help maintain high technical standards across the mechanical discipline. What you'll need to succeed A degree, HNC or HND in Mechanical or Building Services Engineering A strong background in mechanical building services design at senior level Proficiency in relevant design tools including Revit, Amtech, Relux/Dialux and Microsoft Office Strong understanding of British Standards, Building Regulations and industry guidelines Experience incorporating low‑carbon, renewable and energy‑efficient solutions Awareness of BREEAM and sustainable design principles Understanding of electrical interfaces to ensure coordinated design Professional membership (e.g., CIBSE or IMechE) or active progression toward it Confident communicator with the ability to engage clients, contractors and partners effectively What you'll get in return A salary between £50,000 and £65,000, depending on experience Clear and structured progression opportunities, including support toward Chartership A flexible, modern approach to working Generous holiday allowance with the option to buy or sell additional days Enhanced sickness and family‑friendly benefits Exposure to varied and technically interesting, sustainability‑focused projects Cycle‑to‑work and electric vehicle schemes Eye care support, employee assistance programme and team‑building allowances Additional incentives such as referral bonuses 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 Specialist Recruitment Limited 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 hays.co.uk