Chief Sustainability Officer Job Description

Chief Sustainability Officer (CSO) Job Description

The Chief Sustainability Officer is the senior executive responsible for the organisation’s sustainability strategy, climate and ESG disclosures, and the integration of sustainability considerations into corporate decision-making. As statutory reporting requirements have expanded — SECR, TCFD-aligned mandatory climate disclosures, ISSB IFRS S1 and S2, the FCA Sustainability Disclosure Requirements, and where applicable the EU Corporate Sustainability Reporting Directive — the CSO role has moved from corporate responsibility advocacy to board-level accountability for material commercial and regulatory outcomes.

This job description provides the role overview, responsibilities, reporting structure, experience requirements and salary benchmarks for a permanent Chief Sustainability Officer appointment in the UK. Where the business needs flexible engagement rather than a permanent appointment, Exec Capital also recruits interim Chief Sustainability Officers for full-time bridging engagements and fractional CSOs for ongoing part-time oversight.

Role Overview and Position in the Organisation

The Chief Sustainability Officer owns the corporate sustainability strategy and the operational delivery of sustainability commitments, regulatory disclosures and ESG performance across the business. The role has evolved over the last five years from a values-led advocacy position into a financial reporting and regulatory compliance role with direct material consequences for audit opinion, investor relations, customer retention and competitive positioning.

Reporting structure. The CSO typically reports to the Chief Executive Officer in listed companies and large private businesses, recognising the cross-functional nature of the role and the board-level accountability that sustainability reporting now carries. In some organisations the CSO reports to the Chief Financial Officer, reflecting the integration of sustainability disclosures into financial reporting cycles. The CSO almost always sits on the executive committee and reports formally to the audit committee or a dedicated sustainability committee of the board.

Team and scope. The CSO leads a sustainability function that typically includes ESG reporting analysts, climate strategy specialists, sustainable supply chain leads, and where relevant a sustainability assurance liaison and stakeholder engagement function. Team size varies by business scale — from a small team of three to five at mid-market level to a sustainability organisation of fifty or more at FTSE 100 scale. The CSO also leads engagement with external sustainability assurance providers, ESG raters and rankings agencies, and sector sustainability bodies.

Key Responsibilities of the Chief Sustainability Officer

Sustainability strategy. Setting and owning the multi-year sustainability strategy — material topics, science-based targets, net zero roadmap, social impact priorities, governance commitments. Reviewing strategy annually and adjusting in response to materiality changes, regulatory developments and stakeholder expectations.

Statutory disclosure ownership. Owning the production and audit of statutory sustainability disclosures — SECR energy and carbon reporting, TCFD-aligned climate disclosures, ISSB IFRS S1 and S2 reporting under UK SRS adoption, FCA SDR for in-scope financial services firms, and CSRD for businesses with significant EU operations.

Greenhouse gas measurement and reporting. Owning the carbon accounting framework including scope 1 (direct), scope 2 (purchased energy) and scope 3 (value chain) emissions inventory. Engaging with sustainability assurance providers on the assurance scope, methodology and findings.

Climate strategy and transition planning. Developing the climate transition plan — physical and transition risk assessment, decarbonisation pathway, capital expenditure implications, scenario analysis aligned to TCFD pillars and ISSB requirements.

ESG investor and lender engagement. Representing the business in engagement with institutional investors on ESG strategy, responding to ESG diligence questionnaires from sponsors and lenders, and managing relationships with ESG rating agencies such as MSCI, Sustainalytics, ISS ESG and CDP.

Supply chain sustainability. Embedding sustainability requirements in supplier selection and procurement processes, particularly where the business is in scope of CSRD value chain disclosure or where customers require Scope 3 emissions data from suppliers.

Social and governance commitments. Owning the social impact strategy — diversity and inclusion outcomes, human rights due diligence, community investment, modern slavery compliance — and the governance commitments around board composition, executive pay alignment to sustainability outcomes, and sustainability assurance.

Industry and policy engagement. Representing the business in industry sustainability initiatives, sector decarbonisation alliances, and policy consultations. Engaging with the Financial Reporting Council and other regulatory bodies on sustainability reporting expectations.

Board reporting. Providing the board with quarterly and annual sustainability performance reports, briefings on emerging regulatory developments, and supporting directors’ statutory duties under section 172 of the Companies Act including the duty to have regard to environmental impact.

Experience, Skills and Qualifications

Experience. Ten to fifteen years in sustainability or ESG leadership roles, with at least five years at director level managing sustainability strategy, reporting and stakeholder engagement. Prior tenure as Director of Sustainability, Head of ESG, or equivalent in a listed company or large private business is the standard signal of role readiness.

Reporting framework fluency. Direct hands-on experience delivering disclosures under SECR, TCFD, ISSB and where applicable CSRD. Familiarity with GRI Standards, SASB Standards and the development of the integrated reporting framework. Comfort with sustainability assurance under ISAE 3000 and equivalent standards.

Educational background and credentials. A degree is standard. MSc qualifications in Sustainability, Environmental Management, Climate Science or related disciplines are common at senior level. Professional credentials valued in the market include IEMA Full Membership or Fellow status, CFA Institute Certificate in ESG Investing, and GARP Sustainability and Climate Risk certification.

Commercial and financial fluency. The CSO connects sustainability investment to commercial outcomes — cost of capital, customer retention, talent attraction, regulatory risk. Sustainability executives without commercial credibility struggle to win board support for sustainability investment in tougher trading conditions.

Stakeholder management. Managing relationships with the executive team, board, sustainability assurance providers, ESG rating agencies, institutional investors, regulators and where applicable industry bodies and NGOs.

Board governance familiarity. The Institute of Directors guidance increasingly highlights sustainability as a director-level responsibility. CSOs presenting to audit, risk and full board committees require fluency in board reporting standards, audit committee scrutiny, and integration of sustainability outcomes into directors’ statutory duties.

Salary Benchmarks and Compensation Structure

Permanent Chief Sustainability Officer compensation in the UK varies by business scale, sector and regulatory exposure. Indicative base salary benchmarks:

• Mid-market (£50m to £250m turnover): £120,000 to £180,000 base
• FTSE 250 / large private (£250m to £1bn): £180,000 to £280,000 base
• FTSE 100 / regulated financial services / heavy industry: £250,000 to £400,000+ base

Annual bonus arrangements typically range from 15% to 35% of base salary, with sustainability performance metrics increasingly used as performance measures alongside corporate financial outcomes. Long-term incentive plans linked to specific sustainability targets — emissions reductions, ESG rating improvements, sustainability assurance outcomes — are becoming standard at FTSE 250 and above.

The senior sustainability executive market in the UK has expanded rapidly over the last three years as statutory disclosure requirements have proliferated. Strong candidates with combined commercial, regulatory and technical sustainability credibility are in genuinely short supply, particularly in financial services, heavy industry and consumer goods sectors. CSO searches at mid-market level typically take twelve to eighteen weeks; at FTSE 250 and above, searches frequently run twenty to twenty-six weeks. The strongest candidates are almost always passive — currently in role at recognisable businesses and requiring confidential approach.

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