Onwuka Joy

COREN-registered Chemical Engineer with strong operational expertise in refinery oil movement, hydrocarbon accounting, custody transfer systems, and product reconciliation within downstream oil & gas operations. Demonstrated capability in tank farm operations, crude/product measurement verification (dip, ullage, gauging), blending support, line operations (flushing, dewatering, packing), and movement reporting systems. Strong track record in ensuring measurement integrity, loss control, and operational compliance in high-volume hydrocarbon environments handling multi-thousand-barrel daily flows across storage and transfer systems.

Experienced across refinery operations, procurement systems, laboratory support, and process engineering support, with consistent focus on accuracy, operational discipline, and production reliability. Currently holds an M.Eng. in Chemical Engineering (Completed – Awaiting Certificate) with research focus on process optimisation and industrial waste valorisation.

Research / Chemical Engineer – Oil Movement & Hydrocarbon Accounting - Warri Refining and Petrochemical Company (WRPC) - Warri, Delta State

(2024-09 - 2026-02)

• Executed refinery hydrocarbon accounting across crude receipt, storage, and product dispatch systems handling thousands of barrels per day (kbd-scale operations).
• Performed custody transfer measurement verification using dip, ullage, and tank gauging techniques across multiple storage tanks.
• Participated in crude and product balancing across tank farms, pipelines, and jetty export/import systems.
• Supported line flushing, dewatering, line packing, and inter-tank transfer operations ensuring operational readiness and product integrity.
• Assisted blending operations ensuring compliance with product specifications and segregation control.
• Developed daily, weekly, and monthly reconciliation reports for hydrocarbon loss tracking and variance analysis.
• Ensured strict adherence to refinery SOPs, HSE policies, and process safety standards throughout all operations.
• Improved measurement accuracy and reconciliation consistency by ~15–20% through stricter verification of dip/ullage readings and robust data validation protocols.
• Supported reduction of unaccounted hydrocarbon losses by ~10–15% in monitored tank systems through enhanced tracking and reporting discipline.
• Contributed to reconciliation of multi-thousand-barrel daily product movement streams across tanks, pipelines, and jetty operations.
• Strengthened operational reporting integrity, significantly reducing data discrepancies between field measurements and control room records.
• Improved turnaround time for monthly closing reconciliation reports by approximately 20–25% through structured data collation and workflow optimisation.

Procurement Officer - Biogold Nigeria Limited - Nigeria

(2022-01 - 2023-12)

• Managed end-to-end procurement of technical materials, chemicals, and operational supplies.
• Developed vendor sourcing strategies and maintained comprehensive supplier database systems.
• Negotiated pricing, delivery terms, and contract agreements with suppliers.
• Coordinated procurement planning with operations and logistics teams.
• Ensured compliance with procurement policies, quality standards, and budget controls.
• Reduced procurement lead time by ~25% through structured vendor prioritisation and procurement cycle optimisation.
• Delivered ~8–12% cost savings across recurring procurement categories through competitive sourcing and negotiation.
• Maintained >90–95% on-time delivery performance for critical operational materials.
• Achieved near-zero operational downtime (>98% material availability) by eliminating stock-out incidents in critical supplies.
• Maintained 100% procurement documentation accuracy covering purchase orders, invoices, and vendor records.
• Improved supplier reliability through structured vendor evaluation and performance scoring system.

Process Engineer (Part-Time) - Teabog Nigeria Enterprise Limited - Nigeria

(2024-01 - 2026-02)

• Developed and optimised construction workflows and method statements to improve efficiency and reduce waste.
• Prepared and reviewed technical documentation including PFDs, P&IDs, engineering drawings, and operating procedures.
• Monitored site operations to ensure work progressed according to plan, schedule, and quality standards.
• Identified process bottlenecks and equipment issues and provided practical engineering solutions.
• Conducted risk assessments and participated in HAZID/HAZOP studies to ensure site safety.
• Enforced compliance with project specifications, drawings, regulatory requirements, and HSE standards.
• Supported budgeting, scheduling, and cost control by tracking resource and material utilisation.
• Coordinated with civil, mechanical, electrical, procurement, and contractor teams to resolve technical issues.
• Designed and optimised process systems for industrial projects including pipelines, water treatment plants, HVAC, and utilities, applying chemical engineering fundamentals.
• Identified process inefficiencies leading to ~5–10% operational improvement opportunities in selected process units.
• Contributed to improved reporting accuracy and decision-making through structured technical summaries.
• Supported process safety compliance audits with zero critical non-conformities in assigned tasks.
• Assisted in optimisation studies that reduced minor process delays and improved workflow stability.

Production & Procurement Support Officer (Part-Time) - EJAMS Food ASP Limited - Nigeria

(2024-01 - 2026-02)

• Tracked and recorded raw material inventory to ensure accurate stock levels for production.
• Coordinated with production and procurement teams to maintain continuity of material supply.
• Prepared and maintained procurement documentation for production inputs, ensuring traceability and accuracy.
• Monitored material usage during production to identify and reduce wastage.
• Supported scheduling and workflow coordination to minimise material waiting time.
• Assisted in verifying incoming materials against purchase orders and quality requirements.
• Oversaw conversion of raw materials into finished products in line with production specifications and quality standards.
• Improved raw material tracking accuracy, reducing inventory discrepancies by ~10–15%.
• Supported coordination that improved production workflow continuity and reduced material waiting time.
• Strengthened procurement documentation accuracy and traceability for production inputs.
• Contributed to improved material utilisation efficiency and reduced wastage levels.

Laboratory Technologist Assistant / Technical Support - Petroleum Training Institute (PTI) - Effurun, Delta State

(2016-01 - 2017-12)

• Supported laboratory experiments and practical modules for chemical engineering courses.
• Prepared and set up laboratory equipment, reagents, and materials for practical sessions.
• Conducted QA/QC checks on samples and equipment to ensure accuracy of results.
• Maintained compliance with laboratory HSE and safety standards during all operations.
• Documented experimental data accurately for academic and technical evaluation.
• Managed inventory of chemicals, glassware, and consumables and coordinated restocking.
• Assisted in calibration and routine maintenance of laboratory instruments.
• Provided technical guidance and troubleshooting support to students and instructors during practical sessions.
• Maintained 100% compliance with laboratory safety standards throughout all operational sessions.
• Improved laboratory preparation efficiency and equipment readiness for training cycles.
• Assisted in accurate documentation of experimental data used for academic and technical evaluation.

Chemical Process Engineering Intern - Warri Refining and Petrochemical Company (WRPC) - Warri, Delta State

(2012-01 - 2013-12)

• Gained hands-on exposure to refinery operations involving custody transfer, blending, and tank farm systems.
• Supported operational activities contributing to the safe execution of oil movement processes.
• Assisted in line flushing and dewatering operations, supporting system integrity.
• Built foundational competence in refinery process safety and operational discipline.

M.Eng.

• Chemical Engineering - University of Port Harcourt (2023-01 - 2026-12)

B.Eng.

• Chemical Engineering - University of Port Harcourt (2017-01 - 2020-12)

HND - Petroleum & Natural Gas Processing - Petroleum Training Institute (PTI) (2013-01 - 2015-12)

ND - Chemical Engineering - Auchi Polytechnic (2010-01 - 2012-12)