Duncan Juma Wanzala
Plumbing & Warehouse Operations Specialist
Nairobi
Summary
Results-driven plumbing and warehouse operations professional with over 5 years of hands-on experience in system installation, preventive maintenance, inventory control, and warehouse supervision. Skilled in technical troubleshooting, stock management, and safety compliance, ensuring operational efficiency in dynamic industrial and commercial environments. Experienced in coordinating logistics, maintaining accurate inventory records, and executing plumbing solutions across diverse sectors. Highly adaptable and organized, with a proven ability to lead teams, manage multiple tasks, and optimize technical and warehouse workflows for maximum performance.
Organized Warehouse Supervisor offers 3 years of shipping and receiving experience acquired through warehouse roles. Excels in managing warehouse logistics and leading inventory audits. Versed in purchasing, vendor relationship management and shipping documentation.
Oversees warehouse operations to meet continuous internal and customer needs. Well-coordinated and decisive leader with expertise in program management, team building and performance optimization. Solid history of success in developing and maintaining best practices for successful high-volume fulfillment and supply chain management.
Overview
6
6
years of professional experience
3
3
Certifications
2
2
Languages
Work History
Warehouse Supervisor & Technical Plumber
Muenzer Kenya
01.2024 - Current
- Led the integration of warehouse and technical operations, improving coordination across departments and enhancing overall workflow efficiency by 30%.
- Supervised inventory movement and resource allocation, ensuring timely availability of technical components and eliminating stockouts.
- Executed complex plumbing installations and maintenance tasks for waste oil recycling systems, reducing operational downtime by 40%.
- Enforced compliance with safety protocols in both warehouse and plumbing environments, significantly minimizing accidents and violations.
- Streamlined warehouse documentation processes through digital recordkeeping, improving accuracy and audit readiness.
Senior Warehouse Officer
Muenzer Kenya
01.2023 - Current
- Directed daily warehouse operations and optimized space utilization, increasing storage efficiency and reducing retrieval times by 25%.
- Established structured inventory control procedures, resulting in a 98% inventory accuracy rate during audits.
- Trained and supervised warehouse staff, improving team productivity, and reducing errors in dispatch and receiving.
- Partnered with procurement and logistics teams to align stock levels with project demands, cutting material delays by 40%.
- Maintained rigorous compliance with warehouse safety and operational standards, ensuring smooth and uninterrupted workflows.
- Supervised shipping and receiving, distribution and workplace safety.
- Supervised warehouse operations by managing employees during shifts.
- Completed daily operations on time and maintained high standards of accuracy.
- Conducted regular inventory audits to identify discrepancies in stock counts while implementing corrective measures as needed.
Plumber
Kwetu Nairobi Curio Collection by Hilton
06.2022 - 10.2022
- Installed and maintained plumbing systems in hotel guest rooms and public spaces, enhancing service reliability and guest satisfaction.
- Implemented routine maintenance inspections, reducing emergency repairs by 30% and extending system lifespan.
- Logged all repair and maintenance activities for audit compliance and operational transparency.
- Delivered rapid response to emergency plumbing issues, minimizing guest complaints and service interruptions.
Plumber
Kenya Women and Children's Hospital
11.2021 - 03.2022
- Maintained clean water and drainage systems in critical hospital areas, safeguarding patient safety and regulatory compliance.
- Repaired specialized medical plumbing fixtures, restoring functionality with minimal downtime.
- Conducted proactive system checks to preempt faults, improving service continuity in sensitive departments.
- Responded promptly to urgent plumbing repairs, maintaining healthcare standards and preventing contamination.
Plumber and Pipe Fitter
United Nations
03.2021 - 10.2021
- Performed plumbing maintenance and repairs across UN office and residential facilities, enhancing infrastructure reliability.
- Developed preventive maintenance schedules, reducing emergency repairs and improving long-term performance.
- Collaborated with facility managers to implement plumbing upgrades, contributing to energy and water conservation efforts.
Plumber
Dunhill Plumbers
01.2020 - 01.2021
- Delivered customized plumbing solutions for residential and commercial projects, increasing customer satisfaction and repeat business.
- Mentored junior technicians, improving team proficiency and project turnaround times.
- Conducted compliance checks and system tests, identifying and resolving plumbing issues efficiently.
Education
Diploma - Warehouse Management and Logistics
Alison
05-2025
Craft - Plumbing and Pipe Fitting
Trident Vocational Training College
Skills
Problem-Solving & Conflict Resolution: Effectively resolves technical faults and operational disputes, ensuring uninterrupted plumbing services and smooth warehouse workflows
Critical Thinking & Decision-Making: Makes prompt, informed decisions during system breakdowns or stock discrepancies, maintaining service continuity and resource efficiency
Attention to Detail & Accuracy: Precisely inspects systems, verifies inventory, and documents activities, ensuring compliance with safety and operational standards
Team Collaboration & Leadership Skills: Leads and mentors technical and warehouse teams, promoting accountability and achieving task alignment
Certification
Certificate in Efficient Warehousing: Mastering Stock Control & Supply Chain Dynamics | 2025
References
Available Upon Request
Plumbing & Warehouse Operations Specialist
Plumbing System Installation & Maintenance | Warehouse Operations Management | Inventory Control & Stock Management | Preventive Maintenance Planning | Pipefitting & Welding | Technical Troubleshooting | Blueprint & Diagram Interpretation | Health & Safety Compliance | Emergency Repairs Response | Logistics Coordination | System Compliance & Inspection | Digital Inventory Documentation | Plumbing Code Compliance | Team Supervision & Training | Work Order & Reporting Systems
Timeline
Warehouse Supervisor & Technical Plumber
Muenzer Kenya
01.2024 - Current
Senior Warehouse Officer
Muenzer Kenya
01.2023 - Current
Plumber
Kwetu Nairobi Curio Collection by Hilton
06.2022 - 10.2022
Plumber
Kenya Women and Children's Hospital
11.2021 - 03.2022
Plumber and Pipe Fitter
United Nations
03.2021 - 10.2021
Plumber
Dunhill Plumbers
01.2020 - 01.2021
Craft - Plumbing and Pipe Fitting
Trident Vocational Training College
Diploma - Warehouse Management and Logistics
Alison