About Ethos Ethos is a collaborative team of engineers, consultants, and creative thinkers designing and delivering data centre and energy infrastructure across the world's most dynamic markets. As a multidisciplinary consultancy, we combine technical expertise, creativity, and integrated delivery to lead complex, mission-critical projects. Built on strong relationships, clear leadership, and a can-do mindset, Ethos is entering an exciting phase of growth, expanding our capabilities and taking on increasingly high-impact projects across EMEA and beyond. Sustainability guides how we design, collaborate, and deliver, creating innovative solutions and lasting value for our clients and communities — making Performance Made Possible. About the Job Ethos is looking for a highly skilled Senior Project Mechanical Design Engineer with 10+ years experience. They will need to lead the design of mechanical building services for projects in the data centre sector. As a Senior Project Mechanical Design Engineer, you will oversee projects across the EMEA region, managing the full project lifecycle from initial concept to client handover. You will confidently handle project delivery while building and maintaining strong client relationships. In addition, you will mentor and guide engineering staff, ensuring all team deliverables meet our quality assurance standards before handover. One of your primary deliverables in this role will be the management of several projects and ensuring that all members of the team stay on track with deliverables. Responsibilities: • Oversee the development and workload of team members to optimise productivity. • Possess extensive knowledge of discipline areas to guide decision-making and problem-solving effectively. • Understand client needs and develop strong client relationships to deliver tailored solutions that meet expectations. • Comprehend contract terms and conditions to control scope creep and maintain project integrity. • Delegate tasks strategically to achieve maximum value and enhance team engagement. • Report progress to the Group Management Team to ensure transparency and alignment with organisational goals. • Manage quality control within projects to ensure deliverables meet established standards. • Engage in resource management to optimise resource allocation and project execution. • Promote a positive message internally and externally to enhance team morale and the company’s reputation. About You • This role offers a hybrid remote arrangement in Ireland, requiring attendance at the Dublin office as determined by the team's schedule. • Minimum of 10+ years of mechanical design experience. • Hold a professional qualification. • Role would be as a senior member of the design team, working under the team leadership to deliver leading data centre developments for some of the largest tech firms in Ireland and overseas. • Candidate would need excellent communication skills, representing Ethos as the design team in client meetings. • Ability to lead projects and take briefs from the project lead on large projects, delivering and controlling the required tasks. • Candidate needs to balance multiple tasks, prioritise, and delegate as appropriate to meet project deadlines. • Excellent report writing skills and the ability to explain complex engineering issues in simple and clear language. • Good understanding of HVAC and building controls. • Experience in the design of plumbing and drainage systems is preferred. • Training and professional development of junior and intermediate engineers working as part of the group. • Training and mentorship will be provided to develop the right candidate to progress into a lead role within the Data Centre team. Why Join Us? • Join collaborative leaders – Work alongside experienced, approachable professionals who combine technical excellence with calm, supportive leadership. • Make a real impact – Contribute to mission-critical infrastructure projects that support the digital and energy transition across EMEA and beyond. • Grow with us – As a rapidly growing consultancy, we offer opportunities to develop your skills, broaden your experience, and build your career. • Shape a more sustainable future – Sustainability isn't an initiative—it's embedded in every project, every discipline, and every decision we make. We offer: • Flexible Fridays and a 9-day fortnight working schedule — enjoy every second Friday off to maintain work–life balance. • A culture that values flexibility, learning, and teamwork, with clear progression pathways and support toward professional accreditation. • Opportunities to work alongside some of the most experienced engineers in the industry, within a forward-thinking, technology-driven consultancy. Benefits: • Flexible working times • 20 Days holidays up to 25 days • Pension Scheme • Refer a Friend scheme • Healthcare check-ups and flu vaccinations • Gym / Fitness membership Allowance • Subsidised Health Insurance Allowance • Working travel out-of-pocket expenses • Travel tax scheme or bike-to-work scheme • Regular training/mentoring / further college support • Support for Chartership • A Professional Subscription Fee paid by the company • Paid Statutory Leaves • Heavily subsidised social committee Recruitment Agencies: Please do not reply to this job advert. Should Ethos require assistance with this posting you will be contacted by our Talent Acquisition Team.