Process Engineer (Pyrometallurgy)

Who are we?
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.

About the Role

Mangrove is seeking an exceptional individual to play a key role in their multidisciplinary engineering team. The Pyrometallurgical Lead will lead the design and optimization of pyrometallurgical processes for spodumene concentrate conversion to lithium chemicals (lithium hydroxide or lithium carbonate) projects. This role is based in Vancouver/Delta, BC.

Key Responsibilities

• Provide technical leadership during feasibility studies, FEED, detailed engineering, commissioning, and ramp-up.


• Oversee selection, sizing, and operation of kilns, calciners, and associated equipment and owning the vendor relationship.


• Conduct lab-scale and pilot-scale test work for process development.


• Develop and validate mass and energy balances, heat transfer models, and process flow diagrams (PFDs/P&IDs).


• Analyze process data to improve efficiency, recovery, and energy consumption.


• Support integration between pyrometallurgical and hydrometallurgical plant sections.


• Drive process efficiency improvements, including energy consumption reduction and heat recovery systems.


• Ensure compliance with environmental, safety, and regulatory standards.


• Mentor junior engineers and contribute to technical capability development.

Qualifications & Experience

• Bachelor’s degree in Engineering (Chemical, Metallurgical, Mechanical, or a related field)


• 7-10 years of experience in pyrometallurgy, preferably in lithium processing.


• Registered Professional Engineer within Canada/US, or the ability to readily become one.


• Experience with designing complex metallurgical flowsheets for pyrometallurgical operations, such as crushing, preheating, calcining, milling, mixing, roasting, process off-gas treatment, and material handling.


• Excellent communication and interpersonal skills, with the ability to collaborate effectively with cross-functional teams and customers.


• Familiarity with process simulation software (SysCAD, Aspen) would be an asset.


• Knowledge of acid plants and electrochemical plants would be an asset.

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.