Optimization Engineer - Graduate Programme

Optimization Engineer - Graduate Programme
Location:
Rio Maior

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:

The Global Graduate   Programme   – A Fast-Track to Leadership

The Sibelco   Global Graduate   Programme   is a   two-year rotational   programme   consisting of two   one-year assignments   in key operational and commercial roles. Participants gain   hands-on experience with   real business   projects , ensuring early responsibility and exposure to strategic decision-making.

Participants receive a   permanent contract from the start , ensuring long-term career prospects within Sibelco. As part of this   programme , we are recruiting a   Graduate Optimization Engineer   for a one-year assignment focused on   managing CAPEX projects and operational improvements at the cluster level   in Rio Maior.

Graduates must also be   open to spending their second year in a different cluster   outside their   initial   region to gain   international or regional business exposure .

Your Impact in This Role

This assignment focuses on   technical project management   for CAPEX and operational projects, ensuring safe, sustainable, and cost-effective mineral processing improvements. Key responsibilities include:

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Managing   CAPEX projects   using internationally standardized methods and best practices

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Overseeing the   execution and final outcomes   of operational projects at the cluster level

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Driving   process innovation   in areas such as   recycling and environmental applications

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Supporting   safe, efficient, and high-quality   mineral processing facility improvements

What You Bring to the Table

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Engineering degree   with an interest in   innovation, recycling, or environmental applications

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Strong   analytical and problem-solving skills

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Leadership, communication, and project management skills

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Interest in   process optimization and CAPEX project execution

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Fluent in Englisn and Portuguese, spanish language skills recommended but not mandatory

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Driving license   required

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Openness to spending the second year in a different cluster   for international/regional experience

Our Selection Process

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Application Submission   – CV & Cover/Motivation Letter

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First Interview   – Initial screening and discussion about your background and motivations

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Assessment   – Evaluating key competencies required for the role

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Business Case Study   – A real-world challenge to assess problem-solving and strategic thinking

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Panel Interview   – Final interview with key stakeholders

Why Join Us?

Sibelco’s   Global Graduate   Programme   is a unique opportunity to gain   early career exposure to   real business   challenges and decision-making . Participants   benefit   from:

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A permanent contract from the start   – full-time role, not an internship

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Competitive salary   – we recognize and reward talent

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Relocation support   – receipts-based reimbursement

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Real responsibility & hands-on experience   – make an impact from day one

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Structured career path   – strong performers advance quickly

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Performance guidance & mentorship   – continuous support throughout your assignment

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International/regional exposure   – second-year assignment in a different location

Employee Type:
Graduate

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:

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Meet Our People: Careers

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Learn About Our Recruitment Process: Learn More

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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.