Cape Town City Centre: Mass Balance Engineer

Company and Job Description: Reporting to the Lead: Advanced Control, the Mass Balance Engineer is responsible for generating and maintaining an accurate refinery mass balance on a daily and monthly basis. Youll reconcile process and movement data, ensure model accuracy, and support inventory accounting during month-end cycles. This position sits at the intersection of engineering, operations, and finance, providing critical data that underpins both operational performance and financial reporting. Key Responsibilities: Refinery Daily Mass Balance Compile and reconcile the daily refinery mass balance in line with internal standards and procedures. Validate oil transfers and movements using PI Process Book and Intelligent Movement Management (IMM). Execute daily SigmaFine models and reconcile discrepancies. Maintain weekly reconciliation reports and ensure alignment with process engineering balances. Monitor and achieve model accuracy targets (5% model error). Month-End Stock Accounting Support Finance and Scheduling teams with bulk stock closure and reconciliation. Conduct sampling activities (e.g., Karl Fisher tests). Run monthly SigmaFine cases to extract closing inventories, densities, and temperatures. Publish validated data to PI and SAP HANA via SQL tools. Investigate and resolve discrepancies between technical and financial inventory records. Technical & Cross-Functional Support Collaborate with Process Engineering, Operations, Schedulers, and Finance to maintain data integrity. Support instrumentation and maintenance teams to ensure meter accuracy. Drive continuous improvement in data quality, model performance, and reporting standards. Technical Projects Lead and contribute to projects that enhance refinery mass balance and data systems. Job Experience & Skills Required (Ideal Candidate Profile): BTech or BSc Engineering preferably in Chemical Engineering or Control & Instrumentation. 5 years experience in refinery, process, or instrumentation engineering. Skills & Knowledge Solid understanding of refinery mass balance principles and engineering fundamentals. Strong analytical and problem-solving skills with proficiency in Excel and SQL. Experience with PI (OSIsoft), SigmaFine, and IMM highly advantageous. Familiarity with inventory accounting and meter reconciliation. Excellent communication and collaboration across technical and commercial teams. High attention to detail and data integrity. Willingness to work extended hours during month-end or stock closure cycles. If you are interested in this opportunity, please apply directly.