Sustainability Assurance Lead, Client Manager & Verifier

BSI; United Kingdom; Hybrid; GBP 47,000 - 57,000; Full time

Job summary

BSI seeks a Client Manager – Sustainability Auditor & Verifier to verify schemes (e.g., UK ETS, ISO 14001/50001) and deliver verification opinions to clients. You will lead audits, review colleagues’ work, and help teams ensure high-quality reporting.

This role combines home-based delivery with UK&I travel to client sites, contributing to sustainable outcomes. You will bring strong knowledge of GHG, management systems, and reporting standards, plus experience in preparing robust assessment

Qualifications

• Third-party verification experience for regulated schemes (e.g., UK ETS).
• Third-party verification experience for Greenhouse Gas schemes (e.g., ISO 14064-1 and ISO 14068-1).
• Proven experience delivering audits against ISO 14001 and/or ISO 50001.

Responsibilities

• Verification as required by our clients in accordance with regulated schemes (e.g., UK ETS, EU CBAM), voluntary accredited schemes (e.g., ISO 14064-1 and ISO 14068-1) and specific audit protocols; verification of sustainability reports in accordance with ISSA 5000 and local reporting standards.
• Creation of verification opinions and issuing them to clients.
• Conducting independent technical reviews of verification work delivered by other members of the team.
• Delivery of audits for ISO 14001 / ISO 50001 and other complementary schemes.
• Recommend the issue, re-issue or withdrawal of certificates and report recommendations in accordance with BSI policy, procedures and prescribed timeframes.
• Prepare assessment reports and deliver findings to clients, ensuring clear understanding of assessment decisions and corrective actions where appropriate.
• Add value to clients through the assessment of their systems and processes against BSI requirements.
• Uphold BSI's reputation through excellent planning, delivery, report writing and professional interactions with clients and key stakeholders.
• Demonstrate commercial acumen and a professional, engaging approach when providing feedback to clients.
• Lead assessment teams as required, ensuring team members are adequately briefed and quality of service is maintained.
• Establish effective client partnerships that support client satisfaction and opportunities for business development.

Skills

Data management

GHG knowledge

Environmental issues

Management systems

Communication skills

Report writing

Organization

Client-facing

MS Office

Education

ISO 14001 or ISO 50001 Lead Auditor training

Degree in a relevant area

Training on Assurance of Sustainability Reports

Job description

BSI seeks a Client Manager – Sustainability Auditor & Verifier to verify schemes (e.g., UK ETS, ISO 14001/50001) and deliver verification opinions to clients. You will lead audits, review colleagues’ work, and help teams ensure high-quality reporting.

This role combines home-based delivery with UK&I travel to client sites, contributing to sustainable outcomes. You will bring strong knowledge of GHG, management systems, and reporting standards, plus experience in preparing robust assessment