Job Description

About Us

The Calisen Group are a leading owner and manager of essential energy infrastructure assets. We play a key role in supporting the UK's transition to a low-carbon economy by helping households and businesses use energy more efficiently. Sustainability is at the heart of our mission, and we are committed to making a meaningful impact through data-led insights, innovation, and community engagement.

The Opportunity

We are seeking a proactive and analytical

Sustainability Manager

to join our team on a

12-month fixed-term

basis to cover maternity leave. This role is central to delivering Calisen's sustainability strategy and driving progress towards our Net Zero target for operations by 2030.

Key Responsibilities

Strategy Execution

Translate Calisen's sustainability strategy into actionable programmes with measurable outcomes Lead initiatives that support our Net Zero by 2030 ambition

Data and Insights

Manage the collection, analysis, and reporting of emissions data Enhance data accuracy and develop robust calculation methodologies Lead internal and external assurance of emissions data Own and manage the ESG Data Strategy across the Calisen Group Collaborate with project managers, operational leads, and IT teams to support ESG performance tracking

Stakeholder Engagement

Build strong relationships with internal stakeholders including ExCo and senior leaders Provide regular updates and reports on sustainability performance Partner with community and charity organisations to deliver local impact

Continuous Improvement

Benchmark industry best practices and integrate external insights Promote innovation and continuous improvement in sustainability practices Support learning and development to build sustainability awareness across the business

About You

Essential Qualifications and Experience

Degree in Environmental Science, Sustainability, Data Analytics, or a related field Strong understanding of carbon reporting standards (e.g. GHG Protocol, SBTi) Proven experience in delivering data-driven sustainability initiatives Proficiency in ESG tools, emissions data analytics, and Microsoft Office (Excel, PowerPoint, PowerBI) Excellent communication, collaboration, and problem-solving skills

Desirable

Professional qualifications (e.g. IEMA, GHG Accounting, CDP) Experience working with community or charity partners

Team and Collaboration

You will have 1 direct report, and you will build relationships with Shareholders, ExCo, SLT, Sustainability Partners, Suppliers, Customers, and Charities.

Why Join Us?

At Calisen, you'll be part of a forward-thinking organisation that values innovation, collaboration, and sustainability. This is a unique opportunity to make a tangible impact on our sustainability journey and contribute to a greener future.