Sustainability Operator

Hartree Partners; London; On-site; GBP 50,000 - 70,000; Full time

Job summary

A global energy and commodities firm in London is looking for a Sustainability Operator with at least 3 years of experience. The role involves ensuring proper management of sustainability certifications and compliance records, executing operational workflows, and collaborating with teams on sustainability documentation. Candidates should have a relevant degree and strong analytical skills, with fluency in English and German preferred.

Qualifications

• At least 3 years of experience in operations, sustainability, or regulatory compliance.
• Experience in carbon accounting or risk management preferred.
• Familiarity with GHG emissions reporting and mass balance systems.

Responsibilities

• Execute compliance related workflows in the emissions sector.
• Maintain records for audits and ensure documentation is up-to-date.
• Collaborate with teams to support accurate sustainability documentation.

Skills

Analytical mindset

Attention to detail

Data handling

Collaboration

Education

Degree in environmental or natural science

Degree in sustainability

Degree in business or engineering

Tools

Excel

ERP/trade management systems

ISCC Hub

Nabisy

Job description

Company Overview

JOB DESCRIPTION

Hartree Partners is a global energy and commodities firm, founded in 1997. The firm is headquartered in New York and maintains offices in many financial centres around the world, including London, Singapore, and Dubai. Hartree Partners LP is owned by the company's Managing Partners, senior staff, and Oaktree Capital.

Energy is always evolving. At Hartree Partners, we use our decades of experience in the physical and financial energy and commodities markets to explore the opportunities this evolution provides. We assist our customers in participating in new markets and navigating their complexities for maximum revenues at minimum risk.

We provide a wide range of services to a substantial and diversified customer base that includes corporations, financial institutions, governments, and individuals.

Find out more about us by visiting our website at: http://www.hartreepartners.com/

Our Values

We are DEEPLY ANALYTICAL, data-driven, and methodical, research and application-oriented, we seek to understand before we act.

We are ENTREPRENEURIAL, intellectually curious, and enterprising, our goal is to develop new methods and find new opportunities.

We are INNOVATIVE, creative, and cutting edge, we welcome opportunities to break new ground.

We are COLLABORATIVE, collegial and connected, our best work comes through the teams we have built.

We are ETHICAL, operating with respect and honouring commitments, we are dedicated to making ethical and sustainable business decisions that reflect our core value of integrity.

Role Overview

To strengthen our team globally, we are looking for a Sustainability Operator with at least 3 years of experience based in one of our European offices (Geneva, Hamburg, London). You will play a critical, process-driven role in ensuring that all sustainability-related documentation, certifications, and compliance records – particularly around ISCC, mass balances, and GHG data – are properly managed, verified and recorded. Sitting within the Operations team, you will ensure the company meets its obligations under national GHG mandates, applicable EU regulations (e.g. CBAM) and the ISCC and/or similar certification systems. Supporting sustainable commodity trading operations, this is a hands-on role that will ensure that processes run smoothly, data is accurate, and deadlines are met, while liaising with internal teams as well as certification bodies and regulatory authorities.

Responsibilities

• Daily execution of compliance related, operational workflows in the emissions sector – including data entry, processing and timely reporting. This encompasses, amongst others, the smooth and accurate execution of PoS workflows, ISCC certification tracking, the verification or calculation of GHG-based escalation costs or revenues in line with contracts, timely settlement of invoices, maintaining up-to-date mass balance records across storage locations, and report preparation for regulatory deadlines.
• Keeping company profiles and declarations up to date on portals such as ISCC Hub, Nabisy, UDB, and CBAM Portal, ensuring all regulatory obligations are met.
• Maintenance of all records and documentation in an audit-ready state, ensuring consistent archiving, version control, and naming conventions, liaising with suppliers, clients, and certification bodies to collect and verify sustainability claims and certificates when needed.
• Preparation for and participation in internal and external audits, e.g., for ISCC, including maintaining a robust internal documentation trail, evidence gathering and audit follow-up.
• Understanding of how to apply national and regional (e.g., EU-level) frameworks relevant to trading, sustainability and GHG reporting and keep abreast of policy developments that are likely to affect the business, including participation in relevant industry groups.
• Collaboration with colleagues across trade desks, operations, legal, and compliance/ESG, supporting with accurate sustainability documentation and recordkeeping.
• Acting as the point of contact for external verification bodies, regulators, and clients on sustainability matters.
  
  

Requirements

• Completed studies in environmental or natural science, sustainability, business, engineering or a related field.
• At least 3 years of practical experience in operations, sustainability/regulatory compliance, risk management, or carbon accounting – preferably in a trading house, logistics company, consultancy, or industrial context.
• Solid understanding of operational workflows, mass balance systems and/or GHG emissions reporting. Familiarity with ISCC or similar certification schemes as well as audit experience are advantageous.
• Proficiency in Excel and ideally experience with relevant systems (ERP/trade management systems, CEEMAS, Nabisy, ISCC Hub, etc.).
• Analytical mindset, high attention to detail and comfortable handling, structuring and interpreting data.
• Proactive, self-motivated, and capable of working on a multitude of tasks and projects independently and collaboratively.
• Fluent in English and German, to collaborate effectively with international teams.