Specialist Tax Projects

Specialist Tax Projects Location: Bilbao At Sibelco, we advance life through materials. For over 150 years, we’ve been a trusted leader in sourcing, transforming, and distributing specialty industrial minerals. Our work powers progress across industries as diverse as glass, ceramics, construction, coatings, polymers, and water purification.

Beyond our materials, we’re proud of our commitment to sustainability, innovation, and empowering people from all walks of life to thrive and make a meaningful impact. Are We the Perfect Match? At Sibelco, we believe building a successful career is a two-way journey.

We’re looking for individuals who share our values and vision, just as much as you’re seeking a company that aligns with your aspirations. Together, we can shape the future. Job Description: Specialist Tax Projects Are you looking for a tax role where you can work on high-impact strategic projects and influence key business decisions?

At Sibelco, you will join our Group Tax team in Bilbao and play a central role in supporting M&A, restructurings and cross-border initiatives, acting as a trusted business partner to finance, legal and leadership teams across the organization. This is a unique opportunity to combine technical tax expertise with real business exposure, contributing directly to strategic projects while helping shape tax governance, processes and standards at a global level.

###responsibilities### will include but are not limited to: • M&A, Projects & Structuring Provide tax guidance on acquisitions, divestments, reorganizations and joint ventures Perform tax due diligence and identify risks and opportunities Advise on optimal tax structuring aligned with Group policies Support cross-border initiatives (legal entity rationalization, financing, cash repatriation, etc.)

###What You Bring### to the Table • Around 6–7 years of

###experience### in international tax, transaction tax or similar roles (ideally Big 4 or multinational environment) • Strong technical expertise in international tax, M&A tax, structuring, transfer pricing and Pillar 2 •

###Experience### supporting complex, cross-border projects • Strong analytical

###skills### with a structured, problem-solving mindset • Ability to influence stakeholders and communicate effectively across functions and geographies • Proactive, autonomous and comfortable working in a dynamic environment • Tech-savvy with an interest in process improvement and automation • Fluency in English and Spanish is required; additional languages such as French or Dutch are a plus

###About the Role### This position is based in Bilbao (Spain) and is part of the Group Tax organization, reporting to the VP Tax. You will work closely with central functions such as M&A, Finance, Treasury and Legal, as well as local business teams across different regions. This role offers strong exposure to strategic decision-making and

###the opportunity### to contribute to the ongoing development of Group Tax processes, controls and governance frameworks. • Work in a brand-new office in the heart of Bilbao • Be part of a central finance transformation • Collaborate with Group Tax HQ in Belgium and global teams • Enjoy a flexible, international work environment Employee Type: Permanent Why Join Us? Sibelco is more than a workplace—it’s a community that encourages growth, innovation, and collaboration.

Here’s what you can look forward to when you join our team: Meet Our People: Careers Learn About Our Recruitment Process: Learn More Discover Our Sustainability Goals: Sibelco priorities We also welcome applications from all backgrounds and are committed to providing reasonable adjustments to support you through the selection process. How to Apply Follow us on LinkedIn, Instagram, Twitter/X and Facebook to learn more about life at Sibelco.

Submit your application in the Apply option. Please note: We do not require agency services as we have a dedicated Global Talent Acquisition Team. Be part of something special If you are looking for a fast-moving, diverse and challenging career where you can make a real difference, Sibelco could be the right company for you.

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