Senior or Principal Sustainability Consultant - London
Central London, Greater London • Up to £65K plus significant benefits • Ref: JSM 1221
Posted 12th January 2026
My client is seeking a Senior or Principal Sustainability Consultant to join their established Sustainability team in London. This is an exciting opportunity to work at the forefront of sustainable design, supporting high-profile projects and collaborating with a broad range of technical specialists across the built environment.
You will join a highly engaged, knowledgeable and collaborative team that values technical excellence, curiosity and teamwork, offering a flexible and supportive working culture with clear opportunities for progression.
The Role
This is a varied and hands-on role offering a strong mix of project ownership, technical delivery and collaboration.
Depending on experience, you will take ownership of smaller projects while supporting senior colleagues on larger, complex schemes, leading specific workstreams and client interactions. You will play an active role in workshops with clients and design teams, translating complex sustainability challenges into clear, practical solutions.
Key responsibilities include:
Delivering and managing sustainability projects from early design through to completion
Supporting senior team members on large-scale projects and leading defined workstreams
Leading client and design team workshops with clarity and confidence
Delegating, managing and reviewing work produced by others
Supporting the training and development of junior team members
Undertaking a range of modelling and analysis, including embodied carbon, circular economy, building performance, operational energy, energy generation and overheating
Leading the development of sustainability and energy strategies
Delivering environmental assessments such as BREEAM, WELL and HQM
Supporting the delivery of net zero whole life carbon outcomes
Contributing to research, innovation and knowledge-sharing initiatives
Producing high-quality design deliverables including specifications, drawings and schedules
Managing project administration including invoicing, WIP, resourcing and forward planning
About You
You will be an experienced sustainability consultant with strong technical capability and a genuine passion for sustainability in the built environment.
You will bring detailed knowledge in a selection of the following areas, alongside the motivation to continue developing your expertise:
Energy strategies and low carbon design
Building Regulations Part L assessments using tools such as Elmhurst and IES
NABERS UK modelling
In-use energy modelling and performance assessment
Dynamic thermal modelling and overheating analysis
BREEAM and HQM assessments
Bespoke sustainability and circular economy strategies
Health and wellbeing strategies and certification
Planning documentation including sustainability statements, energy statements, whole life carbon and circular economy reports
Net zero carbon strategies and embodied carbon assessment
To succeed in this role, you will have:
Experience within sustainability consultancy and be ready for a new challenge in a leading practice
A relevant degree and strong technical foundation
Confidence leading sustainability workshops with design teams
Clear, professional communication skills and a collaborative approach
Enthusiasm for working within a dynamic, multidisciplinary environment
A serious and long-term commitment to sustainability
What’s On Offer
My client offers a supportive and inclusive working environment where people are encouraged to grow, contribute and enjoy their work. You will benefit from exposure to innovative projects, collaboration with leading specialists and a clear pathway for career progression.
The role offers:
A competitive salary aligned to Senior or Principal level
A permanent, full-time position
Flexible and hybrid working arrangements
Strong emphasis on wellbeing and work-life balance
Structured professional development and career pathways
A comprehensive benefits package designed to support long-term growth
Contact Us
If you are interested in finding out more about this position or similar roles currently and would like a discreet non-committal chat, please contact Jeremy Money (jeremy@jsm-associates.co.uk). However, if you have not received a response within with-in one working week, please assume your application has been unsuccessful this time round. We will confidentially retain your details and inform you of any other suitable opportunities arising should you not be successful in this role.
This is one of a number of exciting positions currently available via JSM Associates. JSM offers an extensive range of jobs in the areas of Planning, CSR & Sustainability, Environmental Management, Remediation & Contaminated Land, EIA and Ecology, Geotechnics, Environmental Planning, Air Quality, Noise and Vibration Landscape.
Phone - 01934 312 155
Email - jeremy@jsm-associates.co.uk
Website - www.jsm-associates.co.uk
Twitter - @JSMAssociates
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