Senior Metallurgist

Join an industry leader and make a positive change in the sustainable use of the world’s natural resources. Together, we will transform the business and drive the industry toward a greener future.

At Metso, you will be supported by our inclusive culture and a network of colleagues from around the world. With us, you will embark on a personal growth journey and are encouraged to realize your potential. This is your invitation to rise above the possible.

Job posting end date: 10/24/2025

Metso Saudi Arabia is looking for Metallurgist to be responsible for optimizing metallurgical performance across the flotation, POX, CIL, and LG CIL circuits of the gold processing plant. The role focuses on reagent management, concentrate quality, recovery maximization, and effective leaching performance. The Metallurgist provides technical oversight, conducts test work, and ensures day-to-day operational adjustments are made to achieve stable, efficient, and safe operation.

Key Responsibilities

• Oversee and monitor flotation, POX, CIL, and LG CIL performance to ensure alignment with production and recovery targets.
• Control and adjust reagent addition rates (collectors, frothers, modifiers, lime, cyanide, oxygen, carbon) to balance mass pull, recovery, and concentrate grade.
• Monitor flotation performance, focusing on:
  
• Mass pull and concentrate grade to achieve optimal balance between gold recovery and downstream processing requirements.
• Froth stability, air flow rates, and cell level control.
• Reagent dosage efficiency and cost control.
  
• Oversee CIL and LG CIL operations, including:
  
• Carbon inventory and activity, carbon safety screening, and carbon transfer efficiency.
• Leaching kinetics, pH control, dissolved oxygen, and cyanide concentration.
• Tail grade monitoring to minimize gold losses.
• Lime addition and pH stability across CIL tanks.
  
• Support POX integration by ensuring flotation concentrate quality is suitable for autoclave feed.
• Conduct metallurgical test work and plant trials to evaluate new reagents, optimize dosage, improve flotation kinetics, or enhance leach recovery. This includes bench-scale flotation tests, bottle roll leach tests, and pilot trials.
• Work closely with laboratory and operations teams to ensure all required assays are performed, such as:
  
• Gold head grade, concentrate grade, and tailings assays.
• Carbon activity and gold adsorption isotherms.
• Cyanide strength, free/weak acid dissociable (WAD) cyanide, and residual lime.
  
• Identify and troubleshoot process upsets or inefficiencies, recommending corrective actions to operations.
• Analyze metallurgical data, prepare daily and monthly reports, and highlight trends in recovery, reagent consumption, and circuit stability.
• Drive continuous improvement initiatives in flotation and leaching to maximize recovery, reduce cost, and support sustainable plant performance.
• Ensure compliance with site safety and environmental standards, particularly around cyanide and chemical handling.
  
  

Qualifications & Experience

• Bachelor’s degree in Metallurgical Engineering, Chemical Engineering, or related field.
• 5+ years’ experience in gold processing with exposure to flotation, CIL, and hydrometallurgical operations.
• Strong knowledge of flotation chemistry, reagent interactions, and leach kinetics.
• Hands-on experience in reagent trials, plant sampling campaigns, and metallurgical test work.
• Skilled in interpreting metallurgical balances, recovery calculations, and laboratory analysis.
• Proficient in metallurgical accounting systems and statistical analysis tools.
• Excellent communication skills to collaborate with operations, laboratory, and maintenance teams.
  
  
  

Core Competencies

• Flotation & Leaching Optimization
• Reagent Management & Dosage Control
• Metallurgical Test Work & Plant Trials
• Process Monitoring & Recovery Tracking
• Data Analysis & Technical Reporting
• Problem-Solving & Troubleshooting
• Safety & Environmental Compliance
  
  
  

How to join - Working at Metso - About Metso - Diversity and Inclusion - Meet our people

Metso is an equal opportunity employer committed to fostering an inclusive and diverse workforce culture. All qualified applicants will receive consideration for employment without regard to race, religion, color, nationality, gender, gender identity, sexual orientation, age, status as a protected veteran or status as a qualified individual with a disability.

Metso is a frontrunner in sustainable technologies, end-to-end solutions and services for the aggregates, minerals processing and metals refining industries globally. We improve our customers’ energy and water efficiency, increase their productivity, and reduce environmental risks with our product and service expertise. We are the partner for positive change.

Metso is headquartered in Espoo, Finland. At the end of 2024 Metso had close to 17,000 employees in around 50 countries, and sales in 2024 were about EUR 4.9 billion. Metso is listed on the Nasdaq Helsinki.

metso.com