Mechanical Design Engineer Location: East Hampshire Industry: Building Services Salary: Starting at £31k Excellent Benefits Hays are partnering with a market‑leading building services contractor specialising in smoke control, ventilation, climate technology, and solar shading solutions. Due to continued growth, they are now seeking a talented Design Engineer to join their expert team and play a key role in delivering safe, effective, regulation‑compliant building systems across the UK. The Opportunity As a Design Engineer, you will develop cost‑effective, regulation‑compliant designs for smoke control and ventilation systems while working closely with sales, projects, CAD, and controls teams. This is an excellent opportunity for an engineer or graduate with strong technical capability, who enjoys solving problems, interpreting complex drawings, and producing high‑quality designs.You'll work within a supportive team environment where CPD is encouraged-including opportunities to specialise in areas such as CFD modelling, acoustics, or product certification. Key Responsibilities System Design & Technical Delivery Design smoke control, performance louvre, and ductwork systems for a wide range of buildings. Produce calculations, fan selections, and pressure‑drop assessments. Provide technical advice to sales teams, customers, and project stakeholders. Ensure all designs align with current drawings, specifications, and building regulations. Create and check CAD drawing information and technical submission documentation. Conduct CFD analysis and produce professional CFD reports. Attend internal and external technical meetings. About You Ability to read and interpret architectural, mechanical, electrical, and construction drawings. Experience designing ventilation systems of any kind (working knowledge or university) Strong technical communication skills across multiple media. The right candidates will be personable, motivated and have a 'can-do' attitude Desirable Experience Smoke ventilation system design. Background in construction or building services. Experience delivering external technical presentations. Qualifications Bachelor's degree in Mechanical Engineering or Building Services Engineering. Benefits Competitve starting salary for a graduate engineer - £31,000 25 days holiday birthdays off 8 bank holidays. 5% pension plan. On‑site car parking. Cycle to Work scheme. Equal Opportunities Employer. Professional Development, undertake CPD and contribute to internal training or seminars. Why Apply? This is a fantastic opportunity to join a forward‑thinking organisation at the forefront of smoke control and ventilation engineering. You'll be part of a supportive, innovative team with genuine opportunities for career progression. 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