Sustainability Engineer
Confidential
Posted: February 20, 2026
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Quick Summary
A Sustainability Engineer plays a crucial role in conducting energy audits, implementing energy efficiency measures, and supporting sustainable energy strategies for clients. The ideal candidate should have a bachelor's degree in Energy Engineering or a related field and experience in energy auditing or a related field.
Required Skills
Job Description
About the role
As a Sustainability Engineer, you will play a pivotal role in conducting energy audits, implementing energy efficiency measures, and supporting the development of sustainable energy strategies for our diverse client base. You will work closely with senior engineers, project managers, and clients to deliver high-quality, cost-effective solutions that align with national and international sustainability goals
Essential Requirements
Bachelor’s degree (NFQ Level 7) or higher in Energy Engineering, Mechanical/Electrical Engineering, Building Services, or a related field.
Minimum of 3–5 years’ experience in energy engineering, sustainability consulting, or a related discipline.
Experience completing energy audits (S.I. 426 Compliance).
Regulatory Knowledge: Familiarity with Irish building regulations, energy performance standards, and sustainability certification systems (Climate Action Plan Targets).
Communication Skills: Strong written and verbal communication skills, with the ability to present technical information to diverse audiences.
Project Management: Ability to manage multiple projects simultaneously, demonstrating strong organisational and time-management skills.
Driving License: Full, clean driving license and willingness to travel to client sites as required.
Desirable Requirements
ISO50001 Implementation/Maintenance Experience
CEM/CEA Accreditation
Experience with energy modelling software building energy simulations, and thermal comfort analysis (BER Certification/Part L Compliance).
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.
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.