Are you an expert IES VE user with a passion for decarbonisation design? We have an exciting opportunity for a highly experienced mechanical building services design engineer to join our award-winning practice. Established in 1949, S I Sealy is the region’s leading employer of building services engineering talent and a previous winner of the CIBSE National Employer of the Year award.

About S I Sealy

• We work with high-profile clients locally and nationally on projects that make a real difference.
• We are at the forefront of helping organisations achieve net zero, using cutting-edge software and innovative design.
• Our culture is open, friendly and supportive, with a strong focus on professional growth.
• We are a Carbon Neutral business, verified to PAS2060.
• Hybrid working and flexible hours to support work-life balance.

Why this role is different

• You will play a key role in delivering net zero and decarbonisation strategies, supported by advanced modelling tools.
• Your expert-level proficiency in IES VE will be central to producing detailed thermal modelling and energy analysis for complex projects.
• LCC (Low Carbon Consultant), LCEA (Low Carbon Energy Assessor) or NDEA are mandatory for this role.
• You will lead mechanical design on major projects, mentor junior engineers, and influence sustainable design outcomes.

You will: –

• Lead mechanical design and coordination across commercial, public sector and healthcare projects.
• Produce detailed engineering designs using IES VE, AutoCAD, and Revit, ensuring compliance with energy efficiency and low or net zero carbon requirements.
• Develop decarbonisation strategies for new and existing buildings.
• Manage client relationships and support business development.
• Mentor junior engineers and contribute to technical leadership within the team.

What We’re Looking For

• Exceptional proficiency in IES VE and demonstrable experience in thermal modelling and energy analysis.
• Strong interest and experience in decarbonisation design and low-carbon technologies.
• Essential Qualifications:
  • LCC (Low Carbon Consultant)
  • NDEA/LCEA Level 5 (Low Carbon Energy Assessor)
• Additional advantageous qualifications:
  • ocDEA (On Construction Domestic Energy Assessor)
  • DEA (Domestic Energy Assessor)
  • One Click LCA
  • NABERS
  • CP1 – Heat Networks
  • Other relevant sustainability and energy assessment certifications.

• Preferably BEng or MEng degree qualified, ideally Chartered.
• Membership of MCIBSE or MIMechE (IHEEM desirable).
• Minimum 5, ideally 10 years UK-based consultancy experience.
• Healthcare sector experience (HTMs/HBNs) or transferable skills such as cleanroom/laboratory design.
• Excellent project management and commercial awareness.

What We Offer

• Attractive salary and comprehensive benefits package:
  • Private medical insurance
  • Life insurance and income protection
  • Stakeholder pension scheme
  • Generous holiday allowance (including your birthday off)
  • Flexible hours and hybrid working
  • Quarterly incentive payments
• Ongoing professional development with customised training and monthly CPD seminars.

We are nice people – who look to make a difference. If that also describes you, come join us.S I Sealy is an Equal Opportunities employer. ISO9001/14001/45001 & 19650 certified and verified Carbon Neutral to PAS 2060.