Senior Sustainability Engineer

Calibre Search; Milton Keynes; On-site; GBP 59,000 - 70,000; Full time

Job summary

A forward-thinking consulting firm in Buckinghamshire is seeking a Senior Sustainability Engineer to lead sustainability initiatives and perform BREEAM assessments. This full-time role offers a competitive salary of up to £70,000. You'll thrive in a multi-disciplinary environment and contribute to impactful, sustainable building projects. Join a company committed to climate-conscious design and ethical governance.

Benefits

Competitive salary

Opportunity to contribute to impactful projects

Values-driven work environment

Qualifications

• Experience in sustainability engineering across multiple disciplines.
• Confident in performing assessments and modelling tasks.
• Able to support technical delivery while enabling strategic direction.

Responsibilities

• Lead sustainability initiatives throughout project lifecycles.
• Prepare and manage building regulation computations and assessments.
• Collaborate closely with business development to support technical delivery.

Skills

BREEAM assessments

Thermal modelling

Energy strategies

Collaboration

Tools

OneClick LCA

LLC (Limiting Carbon Compliance)

Job description

Overview

Role - Senior Sustainability Engineer

Salary - Up to £70k

Location - Buckinghamshire

A forward-thinking, multi-disciplinary consulting firm—deeply rooted in innovation, sustainability, and integrity—is seeking a proactive Senior Sustainability Engineer to bolster their building services design capability. Their expert-led sustainability team champions holistic, practical, and environmentally conscious solutions across all project stages. A well-established consultancy with over 40 years of experience in mechanical, electrical, refrigeration, sprinkler design, and building services for diverse sectors including industrial, logistics, commercial, residential, and more. Recently integrated into a dynamic consultancy group, emphasising sustainable building solutions in industrial and logistics spaces. Committed to long-term environmental responsibility, climate-conscious design approaches, community engagement, and ethical governance. Proud of delivering engineer-led, efficient, and cost-effective services that reduce both capital and ongoing expenditure.

Role Responsibilities

• Lead sustainability initiatives throughout project lifecycles—from early-stage energy strategies to post-construction assessments.
• Prepare and manage:
  • Building Regulation Part L (BRUKL) and EPC/SAP computations
  • Overheating / thermal comfort modelling per CIBSE guidance
  • BREEAM assessments, pre- and post-certification
• Utilise tools such as LLC (Limiting Carbon Compliance or equivalent), OneClick LCA, and thermal modelling software.
• Collaborate closely with the business development team, supporting technical delivery while enabling senior sustainability leads to focus on strategic direction.
• Drive technically robust, resource-efficient deliverables that align with client ESG goals and design intent.

Who they’re looking for

• A technically-minded Senior sustainability engineer, comfortable working across all sustainability disciplines.
• Confident in performing LLC energy statements, thermal modelling, BREEAM assessments, BRUKL/EPC/SAP, and OneClick LCA.
• Enjoy working in a cutting-edge, multi-disciplinary environment—bringing both technical rigor and adaptable collaboration.
• Motivated by freeing up senior leadership from hands-on tasks so they can drive broader team and business impact.

What’s on Offer

• Competitive salary circa £70,000, matching the current level for similar upcoming hires.
• Full-time, office-based role (hybrid or remote may be discussed, but on-site presence is preferred).
• Opportunity to contribute to impactful, sustainable building projects and grow within a values-driven consultancy.

Why This Role Stands Out

• You'll work within a team that applies practical, multi-disciplinary engineering insights to sustainability—embedding it at every project stage.
• The company is noted for innovation, integrity, and high client trust—delivering straightforward, sustainable outcomes without overcomplication.
• Be part of a post-acquisition growth story, where your role helps shape the future of sustainability practice in the built environment.

Feel free to get in touch with Danny Brookes from Calibre Search.

Calibre Search promote equality in the workplace and we welcome applications from all suitably skilled or qualified candidates regardless of their sex, race, disability, religion/beliefs, sexual orientation or age. We act as both an employment agency and employment business.