Senior Metallurgist / Process Engineer

Job snapshot

Key responsibilities

• Preparing and maintain the 5 tph mass balance and process flow diagram.
• Reviewing accessible sampling assay production sales stockpile and VAT leach information and identify data limitations.
• Establish acceptance criteria covering throughput grind size recovery availability downtime reagent use water use tailings condition cyanide control data standard and operator readiness.
• Maintaining accurate auditable records of samples testwork results interpretations process balances and decisions.
• Reviewing the holistic programme's rapid preliminary testwork as an early screen and define the confirmatory and variability work required ahead of design freeze.
• Define extra metallurgical samples required from RC DD drilling and detailed exploration.
• Sample selection compositing preparation chain of custody laboratory requirements QA QC and data validation This as well covers preparing a representative sampling and testwork plan.
• Recommend whether the plant ought to remain at demonstrated capacity undergo corrective modification or proceed to a larger capacity study.
• Maintaining separate metallurgical balances for current VAT leaching and the 5 tph CIL CIP pilot.
• Have authority to recommend a commissioning hold point where sample process reagent tailings cyanide or metal accounting controls are inadequate.
• Update recovery operating cost water power reagent and tailings assumptions for the PFS expansion concept.
• Compare actual performance with the design basis and identify bottlenecks unstable conditions corrective actions and scale up risks.
• Leading the process section of the 30 day operating review and 90 day reconciliation for scale up decision.
• Reviewing vendor equipment for efficient operation and turndown at 5 tph rather than accepting nominal equipment capacities that might be oversized.
• Preparing operator training materials standard operating procedures sampling procedures emergency requirements and process control checklists.
• Preparing variability-testwork requirements for future resource domains.
• Track tonnes head grade recovered ounces tailings grade recovery availability downtime reagent use power water carbon performance and operating incidents.
• Inspect existing workings stockpiles VAT leach feed and accessible bulk samples relevant to pilot design.
• Recommend variation rights cancellation rights performance testing requirements factory or site acceptance testing commissioning hold points and punch list close out requirements.
• Preparing technical RFQ packages for crushing milling classification gravity leach CIL CIP carbon handling elution electrowinning reagent systems detoxification tailings and process water systems.
• Coordinating with the Mining Engineer on feed source chain of custody stockpiles tonnes moisture grade and dispatch data.
• Define feed tonnes per hour operating hours availability feed moisture particle size distribution grind size leach residence time tank volumes carbon inventory reagent consumption water balance power demand tailings rate and expected recovery range.
• Taking part in mechanical completion punch list close out cold commissioning and hot commissioning.
• Reviewing assay certificates blanks standards duplicates laboratory turnaround and exceptions for metallurgical samples.
• Approve the controlled trial feed protocol with the Mining Engineer and HSE lead.
• Making sure pilot performance is not presented as proof of reserve continuity or complete scale economic viability.
• Providing process inputs to mine planning grade control exploration priorities water power tailings and operating cost assessments.
• Coordinating with the Assay QA QC Data Manager and laboratories on sample analysis.
• Reviewing vendor guarantees and identify guarantees that are not supportable until more testwork is complete.
• Define sample points sample frequency laboratory turnaround head grade measurement tailings measurement recovered gold calculation stockpile movements and reconciliation rules.
• Supporting Project Controls and Finance in distinguishing planning allowances from committed quotations.
• Preparing technical bid comparisons covering duty performance turndown utilities instrumentation spares delivery commissioning support and lifecycle risks.
• Preparing dry commissioning wet commissioning water only reagent introduction controlled ore introduction and ramp up procedures.
• Evaluate CIL, CIP and gravity-assisted configurations via representative testwork and process-design review.
• Define instrumentation sampling points laboratory requirements control philosophy data logging metal accounting rules and process acceptance criteria.
• Keeping records of tests that are not required and the technical basis for that decision.
• Issue daily commissioning summaries and weekly pilot performance reports.
• Reviewing plant layout and interfaces with the mine stockpiles laboratory water power reagent storage tailings facility and environmental controls.
• Define and supervise as justified by the ore characteristics mineralogical review crushing and grinding or comparative comminution tests grind size sensitivity gravity recovery assessment bottle roll CIL CIP leach tests leach kinetics residence time reagent consumption water chemistry carbon loading elution implications variability composites and cyanide detoxification tailings behaviour assessment.

Requirements

• Leadership integrity professional ethics and ability to work under pressure at a remote site.
• Excellent QA QC laboratory analytical reporting communication and troubleshooting skills.
• Apply on CNS Group careers.
• Direct hard rock gold processing metallurgical testwork and commissioning experience is required Five years or more is preferred for the lead process role.
• Experience with gravity CIL CIP leaching carbon circuits tailings cyanide controls metallurgical accounting laboratory management and vendor commissioning support is essential.
• Experience with small modular plants remote site operations and incomplete geological or metallurgical datasets is listed as useful extras.
• Proficiency in METSIM JKSimMet or comparable tools where appropriate together with production laboratory and maintenance data systems.
• Open official job details.
• Bachelor's degree in Metallurgical Engineering Chemical Engineering Mineral Processing or remaining related field from a recognised institution.
• Registration with the related Tanzanian professional body is desirable.
• Registration or authorisation required for regulated engineering design certification or statutory sign off shall be confirmed ahead of assigning those duties.
• A Master's degree in Metallurgy Mineral Processing Chemical Engineering or a related mining discipline is a useful extra.
• Fluency in English and Swahili is essential.
• Familiarity with Tanzanian mining and environmental legislation is essential.
• At least 2 year in a supervisory or project role.. This as well covers minimum of 8 years of progressive metallurgical or mineral-processing experience,.
• Working knowledge of gold metallurgy process design plant operations CIL CIP gravity tailings cyanide and metal accounting.

How to apply

Apply through the CNS Group Limited careers portal for this Senior Metallurgist / Process Engineer.

Apply on the CNS Group Limited site

Common questions

What role is open?

CNS Group Limited is recruiting a Senior Metallurgist / Process Engineer.

Where is the job based?

The post is based in Dar es Salaam, Tanzania.

When does it close?

The closing date is 7th October 2026.

How do I apply?

Submit your application directly on the employer's official portal: Apply on the CNS Group Limited site