Senior Mineral Processing Engineer

Mangrove Lithium, a Vancouver based company, has developed a breakthrough platform for the most cost-effective production of battery grade lithium hydroxide and carbonate from diverse input streams and assets. Mangrove’s modular solution can be scaled to any capacity and co-located with upstream lithium producers, battery recyclers, or battery manufacturers. The company has attracted funding from Canada Growth Fund, Bill Gates’ Breakthrough Energy Ventures, BDC Capital and BMW I Ventures. The Company has a highly experienced leadership team with a track record of successfully commercializing and deploying industrial technologies and is working towards the deployment of a first-of-a-kind commercial plant.

Position

Mangrove is seeking a Senior Mineral Processing Engineer to join our Technology Development Department. This role is ideal for a highly experienced engineer with deep expertise in lithium and mineral processing who thrives in hands-on, pilot-scale environments. You will play a key role in designing, scaling, optimizing, and operating advanced chemical processing systems, with a focus on lithium extraction technologies. This is a high-impact position with significant growth potential in the rapidly expanding battery materials sector.

Salary range for this position will be $100 - $140k depending on experience and skills.

Key Responsibilities

• Lead the operation, optimization, and continuous improvement of spodumene processing circuits, including leaching, solid–liquid separation, and impurity removal, with accountability for plant performance, lithium recovery, throughput, and product quality.
• Provide hands-on technical leadership for pilot plant activities, including commissioning, troubleshooting, and debottlenecking, while implementing system upgrades and optimizing operating parameters to improve efficiency, reliability, and cost performance.
• Support the design, upgrade, commissioning, and operation of spodumene processing pilot plants, translating lab-scale results into robust, scalable processes.
• Contribute to the planning and execution of metallurgical test programs, pilot campaigns, and feasibility studies to validate process design and improve performance.
• Develop and review process deliverables, including PFDs, P&IDs, mass and energy balances, and equipment sizing/specifications.
• Apply process simulation and modeling tools to optimize system performance and diagnose operational challenges.
• Analyze process data using statistical and data-driven methods to improve recovery, throughput, and operational efficiency.
• Establish and monitor key performance indicators and implement reporting systems to track plant and pilot performance.
• Ensure compliance with safety, environmental, and regulatory standards, and promote a strong safety culture in all pilot plant and processing activities.
• Contribute to scale-up strategy and technology transfer from pilot to commercial operations.
• Stay current with industry advancements and contribute to continuous innovation in lithium processing technologies.

Required Qualifications

• Bachelor’s degree in chemical engineering, Metallurgical Engineering, Mineral Processing, or a related discipline (advanced degree is an asset).
• 10+ years of industrial experience in mineral and/or chemical processing.
• Strong expertise in lithium extraction processes, including spodumene processing, brine pretreatment, leaching, and separation technologies.
• Proven experience in process design, hydrometallurgy, flotation, and separation systems.
• Hands-on experience with pilot plants, R&D programs, and process scale-up.
• Proficiency with process simulation and modeling tools.
• Strong analytical, problem-solving, and communication skills.
• Self-driven with a practical, hands-on approach to engineering challenges.

Preferred Qualifications

• Eng. designation (or eligibility).
• Advanced knowledge of sustainable lithium extraction technologies.
• Demonstrated ability to operate effectively in fast-paced, startup or scale-up environments.

Why Mangrove? 

At Mangrove Lithium, our people are at the core of our groundbreaking technology. Here’s why you should join our team: 

Competitive Salary: We believe in pay equity, fairness and transparency, and offer competitive salaries that reflect your skills, experience, and contributions. 

Great Benefits: Enjoy a comprehensive benefits package, including a $500/year Personal Spending Account and an Employee Family Assistance Program to support your well-being. 

A Learning Organization: We are committed to your professional and career development, providing ample opportunities for learning and growth. 

Generous Time Off: Start with three weeks of vacation and an additional week of paid personal days to ensure you have the work-life balance you deserve. 

Join us at Mangrove Lithium and be part of a team that’s driving innovation and sustainability in the battery materials industry. Together, we can power a cleaner, greener future.