Building Services Engineer

About the Role

As one of Ireland’s most progressive and people-focused building consultancies, we are strengthening our expert team with a Building Services/ Mechanical Engineer

The successful candidate will primarily work on the design and delivery of mechanical building services systems, with exposure to electrical building services considered advantageous. You will contribute to projects from concept through construction, working closely with senior engineers, architects, contractors, and clients to deliver practical, sustainable engineering solutions.

The successful candidate will be based in the Munster/ Limerick region with the local office based in Limerick.

Key Responsibilities

• Design and develop mechanical building services systems, including HVAC, heating, cooling, ventilation, domestic water services, drainage, and renewable energy systems.


• Produce mechanical calculations, schedules, specifications, reports, and technical documentation.


• Prepare and modify engineering drawings using AutoCAD and Revit (BIM).


• Coordinate mechanical services with electrical engineers, architects, structural engineers, and other project disciplines.


• Carry out site surveys, inspections, and attend design and coordination meetings.


• Respond to contractor queries and review technical submittals during construction.


• Assist with commissioning activities, testing, and project handover.


• Support the preparation of tender documentation, design reviews, and project documentation.


• Maintain accurate project records in accordance with company quality procedures and ISO standards.


• Incorporate sustainable engineering principles and renewable technologies into project designs

Essential Requirements

• Degree in Building Services Engineering, Mechanical Engineering, or a related discipline.


• Demonstrated experience in mechanical building services design within a consultancy or similar environment.


• Experience designing HVAC and mechanical building services systems.


• Ability to produce engineering calculations, specifications, and technical documentation.


• Proficiency in AutoCAD and Revit (BIM).


• Good understanding of renewable energy technologies, including heat pumps.


• Experience supporting commissioning, technical submittals, and handover activities.


• Strong communication and organisational skills.


• Ability to work both independently and as part of a multidisciplinary team.


• Proficient in Microsoft Office (Word, Excel, and Project)

Desirable Requirements

• Exposure to electrical building services design.


• Experience using IES VE or similar building performance software.


• Knowledge of CIBSE, BS EN, IS, and Irish Building Regulations.


• Experience working in BIM environments.

What We Can Offer You

Being part of ORS means more than just a job, it means joining a company that invests in you and your ambitions with transparency, structure and support.

We are delighted to offer a suite of benefits when you join ORS, which include:

• Competitive salary


• Performance-related bonus


• Pension scheme with matching contributions


• Remote-first hybrid model – use your home as a base and any of our office locations as you see fit


• Work from abroad


• Flexible working hours


• Access to over 60 health disciplines through our Kara Connect Platform


• Continuous Professional development (CPD) programme & funding


• Paid maternity, paternity and fertility leave


• Company and birthday annual leave days


• Death in Service benefit


• Tax saver - travel and bike to work


• Culture, social, wellness and CPD committees


• Talent Development Programmes


• Access to leading career coach Gerry Duffy

About ORS

ORS is a world-class multidisciplinary building consultancy with more than 30 years of delivering technical excellence across the built environment. Our mission is simple but powerful: We endeavour to make the lives of our team, clients, partners and communities happier and better in the ways that really matter every single day.

Don’t just take our word for it! ORS has won numerous awards, recognising our Great Place to Work culture.

• Awarded Consultancy Firm of the Year at the Irish Design & Build Awards 2026 


• Winner of the Engineering Consultancy of the Year at the Engineering Excellence Awards 2025


• Winner of the Graduate Programme of the Year at the Engineering Excellence Awards 2025


• Winner of the Best Company to Work For at the Irish Design & Build Awards 2024 & 2025


• Winner of the Best People Development of the Year at the Engineering Excellence Awards 2024


• Winner of the Recruitment & Retention Strategy at the Workplace Excellence Awards 2024


• Great Place to Work certified consecutively since 2017


• Top 3 Company Best Workplaces in the medium-sized category at the Great Place to Work awards 2025


• Best Workplaces for Health & Wellbeing 2025 Great Place to Work


• Engineers Ireland CPD Accreditation since 20217


• Awarded for Hybrid Way of Working at the 2022 Great Place to Work Awards


• Silver Accreditation through Investors in Diversity 2025

ORS is committed to creating a diverse and inclusive company culture. We foster a culture of inclusion for all employees that respects and supports their individual strengths and experiences.