Supply Chain Manager (Scope 3) in London

We are part of International Airlines Group (IAG), one of the world’s leading airline groups and owner of some of the biggest brands in the sky. IAG Transform provides creative and innovative solutions to drive sustainable transformation by delivering procurement and airline services, as well as group-wide systems across IAG. Each operating company benefits from the Transform centralised model, driving efficiencies, automation, and economies of scale.

Purpose of the role

The Supply Chain Scope 3 Manager is responsible for leading IAG's comprehensive approach to measuring, managing, and reducing Scope 3 carbon emissions across the supply chain. This role drives the implementation of robust carbon accounting methodologies, supplier engagement strategies, and science-based decarbonisation initiatives that support IAG's commitment to achieving net-zero CO₂ emissions by 2050. Working closely with procurement teams and suppliers across all categories, this position ensures accurate emissions tracking, transparent reporting, and meaningful progress toward supplier decarbonisation targets.

Your responsibilities

• Scope 3 Carbon Accounting & Measurement
  • Oversee end-to-end Scope 3 carbon accounting across all supply categories, ensuring comprehensive coverage and accuracy in emissions measurement.
  • Develop and implement robust measurement methodologies aligned with GHG Protocol standards and industry best practices for supplier emissions tracking.
  • Design and deploy data collection processes and systems to capture primary emissions data from suppliers across IAG's diverse procurement categories.
  • Establish quality assurance frameworks to validate supply-provided emissions data and ensure consistency in calculation methodologies.
  • Maintain and enhance carbon accounting models, incorporating emission factors, activity data, and supplier-specific information.
  • Develop supplier engagement strategies to encourage and support emissions reduction activities across the supply chain.
  • Create supplier-specific decarbonisation roadmaps identifying reduction opportunities, timelines, and resource requirements.
  • Collaborate with procurement teams to integrate carbon reduction criteria into supplier selection, evaluation, and performance management processes.
  • Track and report on supplier progress toward decarbonisation targets, identifying barriers and implementing intervention strategies where needed.
• Impact Assessment & Analysis
  • Identify and prioritise high-impact sustainability interventions based on comprehensive carbon hotspot analysis across supply categories.
  • Conduct category-level assessments to understand emissions intensity and identify opportunities for material carbon reductions.
  • Develop business cases for sustainability investments, quantifying carbon reduction potential and return on investment.
  • Support procurement teams in evaluating alternative products, services, and suppliers based on lifecycle environmental performance.
• Reporting & Stakeholder Management
  • Prepare comprehensive Scope 3 emissions reports for internal stakeholders, regulatory bodies, and external sustainability platforms including CDP and EcoVadis.
  • Contribute to IAG's annual sustainability reporting, ensuring accurate and transparent disclosure of supply chain emissions data.
  • Present Scope 3 performance insights and recommendations to senior leadership, procurement teams, and Operating Company stakeholders.
  • Maintain relationships with key suppliers to facilitate data collection, share best practices, and drive collaborative decarbonisation initiatives.
  • Represent IAG in industry forums and working groups focused on supply chain sustainability and Scope 3 emissions reduction.
  • Utilise and optimise sustainability management platforms such as Watershed for Scope 3 data collection, analysis, and reporting.
  • Collaborate with IT and data analytics teams to enhance carbon accounting systems and automate data collection processes.
  • Evaluate emerging technologies and tools for supply chain carbon management, recommending platform enhancements or new solutions as appropriate.
  • Ensure data integrity and security across all carbon accounting systems and supplier data repositories.
• Compliance & Standards
  • Maintain deep understanding of evolving Scope 3 reporting requirements under EU regulations, including CSRD and Carbon Border Adjustment Mechanism (CBAM).
  • Ensure IAG's Scope 3 measurement and reporting practices comply with international standards.
  • Support sustainability audits and verification processes related to supply chain emissions reporting.
  • Monitor regulatory developments and assess implications for IAG's Scope 3 strategy and reporting obligations.

Your skills, experience and qualifications

• Qualifications
  • Bachelor's degree in Environmental Science, Sustainability, Engineering, or related field; Master's degree preferred.
  • Professional certifications in carbon accounting or sustainability (e.g., GHG Protocol certification, Certified Carbon Reduction Manager).
• Skills
  • Expert knowledge of carbon accounting methodologies, emission factors, and data quality assessment.
  • Strong analytical and quantitative skills with proficiency in data analysis and modelling.
  • Advanced Excel skills; experience with data visualisation tools (Power BI, Tableau) preferred.
  • Excellent stakeholder management and communication skills, with ability to influence without direct authority.
  • Project management capabilities with ability to manage multiple workstreams simultaneously.
  • Strategic thinking with ability to translate complex technical concepts into actionable business recommendations.
  • Collaborative approach with ability to work effectively across functions and geographies.
  • Detail-oriented with commitment to data accuracy and quality assurance.
  • Self-motivated and able to work independently in a fast-paced transformation environment.
• Experience
  • 5+ years of experience in carbon accounting, sustainability management, or environmental consulting, with specific focus on Scope 3 emissions.
  • Demonstrated expertise in GHG Protocol Corporate Value Chain (Scope 3) Standard and its practical application.
  • Proven track record of implementing Scope 3 measurement programmes in complex, multinational organisations.
  • Experience working with diverse supplier bases to collect emissions data and drive decarbonisation initiatives.
  • Background in life cycle assessment methodologies and carbon footprinting across product/service lifecycles.
  • Experience using sustainability management platforms such as Watershed, EcoVadis, or similar tools.
  • Knowledge of aviation industry supply chains and sustainability challenges advantageous.
  • Understanding of EU sustainability regulations (CSRD, CBAM, Taxonomy) and their Scope 3 implications.

What we offer

The chance to enjoy a challenging career in an exciting, fast-moving environment in a dynamic industry. The opportunity to work in a multi-cultural environment with great offices in many locations. We support our people in maintaining work/life balance, as well as providing the many benefits one would expect from a global organisation, including health insurance, pension and performance bonuses. We are an equal opportunities employer and all qualified applicants will receive consideration for employment without regard to race, colour, religion, sex, national origin, disability status, protected veteran status, or any other characteristic protected by law.