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Sr Sustainability Specialist

Musket Corp. • Switzerland • Added on Jul 22, 2026
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This role centers on the ownership of sustainability compliance and certification for a large-scale European biofuels trading portfolio. You will act as the primary architect of audit readiness, managing everything from ISCC certifications to complex regulatory submissions across multiple jurisdictions. It is a technical, high-stakes position that bridges the gap between operational logistics and environmental integrity.

Energy transition is at the heart of this mission. By optimizing carbon intensity and managing biofuel credits, you directly influence the commercial viability of renewable fuels. This is a rare opportunity to work at the sharp end of the biofuel economy, ensuring that green energy claims are backed by rigorous data and verifiable supply chain traceability within a global commodity trading environment.

This suits someone who possesses a deep technical understanding of RED II/III regulations and enjoys the precision of mass balance accounting. You should be a regulatory expert who can translate complex environmental mandates into actionable commercial strategies.

Job FAQs

What are the main missions and responsibilities of this role?

The primary mission is to provide total oversight of sustainability compliance for the European biofuels trading desk. You will lead all ISCC certification activities, serving as the technical lead during external audits to ensure every liter of fuel meets strict traceability standards. Beyond audits, you are responsible for managing Compliance Scheme Obligations and national biofuel mandates across various European markets. You will develop and execute strategies to optimize environmental credits, ensuring that the company maximizes value from its sustainable feedstock and finished product portfolio. Daily responsibilities also include maintaining rigorous mass balance systems. This involves reconciling physical movements with sustainability attributes in the ETRM system, ensuring data integrity across complex supply chains and terminal operations.

Key learning opportunities for this job

Candidates will gain unparalleled exposure to the evolution of European energy legislation, specifically the transition from RED II to RED III. This role provides a front-row seat to how environmental policy directly dictates commercial value in the global energy markets. Working within a trading environment offers the chance to master Environmental Commodities trading mechanics. You will learn how sustainability data integrates with financial risk management and how carbon intensity scores fluctuate across different global supply chain routes. Furthermore, the role offers deep professional development in supply chain forensics and advanced mass balance accounting. You will become an expert in the technical architectures used to track renewable energy products from field to tank, a highly sought-after skill set in the decarbonizing economy.

How does the ideal candidate look like (experience, skills)?

The ideal candidate brings at least 5 to 10 years of experience specifically within the biofuels or environmental commodities sector. You must have a granular understanding of the ISCC certification framework and a proven track record of successfully navigating EU renewable energy directives. Technical proficiency in mass balance accounting and experience with ETRM (Energy Trading and Risk Management) systems are essential. The role requires someone who is highly analytical and comfortable working with complex datasets to ensure that sustainability claims are beyond reproach. Soft skills are equally important; you need the authoritative communication style required to manage external auditors and the commercial acumen to collaborate effectively with high-pressure trading teams.

Advice to stand out and make a successful application

To stand out, move beyond general sustainability knowledge and demonstrate specific regulatory expertise. Mention specific national mandates you have managed, such as the UK's RTFO or the German THG-Quota, as this localized knowledge is highly valued in the Geneva hub. Highlight your experience in audit leadership. Describe a situation where you successfully managed a complex ISCC audit or resolved a discrepancy in a chain-of-custody system. The hiring team is looking for a specialist who can handle the 'heavy lifting' of compliance without constant oversight. Since this role supports a trading desk, emphasizing your commercial mindset will be beneficial. Explain how you have previously used sustainability data to create financial value or mitigate regulatory risks, showing that you understand the bottom-line impact of ESG compliance.

What aspects of the company's sustainability is this role likely to focus on?

The core focus of this role is decarbonization of the transport sector through the promotion and certification of renewable fuels. By ensuring the integrity of biofuels, you are facilitating the displacement of fossil fuels in the global energy mix. A significant portion of your work will relate to Supply Chain Traceability. You will be verifying the origins of feedstocks to ensure they do not contribute to land-use change or biodiversity loss, maintaining the 'green' credentials of the entire operations. You will also focus on Carbon Intensity (CI) optimization. By accurately calculating and proving lower GHG emissions for specific fuel batches, you directly contribute to the company's ability to provide lower-carbon energy solutions to its European client base.

What are the main challenges someone in this role might face?

One of the most significant challenges is the rapidly shifting regulatory landscape in Europe. Keeping pace with the technical nuances of RED III and differing national interpretations requires constant vigilance and the ability to pivot internal processes quickly. Data reconciliation can also be a hurdle. You may face challenges in aligning operational logistics with sustainability documentation, especially when dealing with multiple terminals and international supply chains that operate under different reporting standards. Finally, the role involves balancing compliance rigour with commercial speed. In a fast-paced trading environment, you must ensure that compliance requirements are met without becoming a bottleneck for trade execution, requiring both diplomacy and efficiency.

How could a typical day look like for someone in this position?

A typical day might begin with reviewing the previous day's trades to ensure all biofuel credits and sustainability attributes have been correctly captured in the ETRM system. This ensures the desk has an accurate view of its environmental position. Midday might involve a consultation with the trading team regarding a potential new feedstock source. You would evaluate the certification status of the supplier and estimate the carbon intensity score to determine the commercial viability of the product under current mandates. Afternoons are often dedicated to regulatory reporting or audit prep. This could involve compiling 'Proof of Sustainability' (PoS) documents for a national energy agency or meeting with an external auditor to walk through the mass balance records for a specific terminal asset.

What are the opportunities for professional growth and development in this role?

While this is a senior role, there is significant room to grow into strategic leadership within the energy transition space. As Musket expands its renewable fuel portfolio, this role could evolve into a more global sustainability strategy position. You could also transition into environmental commodities trading or portfolio management. Given the deep exposure to credit markets (tickets/certificates), you will have the foundational knowledge to move into more commercially focused roles if desired. Additionally, there is the potential to become a recognized industry expert. Representing the company in industry working groups and certification bodies provides a high level of visibility within the European energy and sustainability community.

The main stakeholders you might be interacting with

You will work very closely with the Biofuels Trading Desk, providing them with the regulatory green light and carbon data needed to execute profitable and compliant trades. Internal stakeholders also include Operations and Logistics teams located at terminals. You will rely on them for accurate mass balance data and chain-of-custody documentation, requiring a collaborative and educational approach. External stakeholders include Certification Bodies (like ISCC) and national environmental regulators. You will be the face of Musket Europe SARL, ensuring these authorities have full confidence in the company’s sustainability reporting and operational transparency.

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