What Is a Chief Sustainability Officer? Role, Responsibilities, and How to Hire One

Example Projects

1. Sustainability Strategy and Governance Framework
   A CSO develops the overarching sustainability strategy, sets priorities across environmental, social, and governance dimensions, establishes governance structures (including board-level sustainability committees), and defines KPIs and accountability frameworks. This ensures sustainability is embedded in corporate planning rather than treated as an add-on.
2. Net Zero Transition Plan Development
   The CSO leads the development of a credible net zero transition plan, setting science-based targets, identifying decarbonisation pathways, modelling capital requirements, and building the business case for investment. They ensure the plan meets the expectations of the Transition Plan Taskforce (TPT) framework and UK SRS disclosure requirements.
3. ESG Reporting and Investor Relations
   CSOs manage the full spectrum of ESG disclosure, from CDP and SBTi submissions to annual sustainability reports, UK SRS compliance, and CSRD reporting for companies with EU obligations. They also lead ESG engagement with investors, analysts, and rating agencies.
4. Sustainability Team Building and Capability Development
   A CSO assesses internal capability gaps, defines team structure and roles, hires or procures specialist resource, and builds the internal processes and competencies needed for sustainable long-term delivery.

Who Do They Work With?

CSOs work at board and executive committee level, collaborating with the CEO, CFO, COO, and General Counsel. They manage sustainability teams and coordinate across finance, operations, procurement, HR, communications, and legal. Externally, they engage with investors, regulators, rating agencies, and industry bodies.

Who Should Hire One?

Any organisation where sustainability is (or should be) a board-level strategic priority. This includes listed companies preparing for UK SRS, businesses with SBTi or net zero commitments, organisations facing investor or customer pressure on ESG performance, and companies navigating CSRD compliance. A fractional CSO is ideal for mid-market companies that need senior leadership but cannot justify a full-time executive hire.

ROI and Strategic Benefits

A CSO ensures sustainability investment is strategically directed, regulatory compliance is maintained, and ESG performance translates into commercial value through better financing terms, procurement wins, talent attraction, and brand differentiation. Without senior leadership, sustainability efforts often fragment, lack strategic coherence, and fail to influence the decisions that matter most.

Ready to Hire?

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