Onur Arslan Email & Phone Number

İstanbul, Turkey

İstanbul, Türkiye

I most recently served as Supplier Management and Purchasing Manager at KALEKALIP, a leading manufacturer of metal parts and products for the defense industry. In this capacity, I managed;•Direct and Indirect Procurement•Foreign Trade and International Sourcing•Supplier Relationship Management•Supplier Quality Assurance and Management, overseeing a team of 23 direct reports.I managed an annual procurement volume of $25M across 200+ suppliers spanning multiple categories and industries. Key competencies demonstrated in this role included;•Developed and implemented a purchasing taxonomy and transitioned to category management, optimizing human resource planning. This initiative resulted in a 50% resource savings in indirect purchasing and a 25% savings in direct purchasing.•Improved supplier and sub-producer contract signing rates from 12% to 75% through comprehensive re-evaluation, categorization, and strategic negotiations.•Streamlined purchasing processes by eliminating manual demand approval, offer, and order stages for specific product groups using ERP-defined catalogs. This allowed for the automation of the ordering process, while a newly launched portal enabled real-time monitoring of product readiness, logistics, and supplier quality, thereby accelerating operations and further reducing resource usage.•Redesigned the supplier selection and evaluation process, leading to a 20% increase in new suppliers for direct purchasing and a 10% increase in indirect purchasing. This initiative also resulted in the termination of relationships with 5% of direct suppliers due to inadequate quality, delivery, and pricing standards.•Diversified supply sources, achieving a 12% cost savings in direct purchasing and 7% in indirect purchasing.•Fostered strong, trust-based relationships with direct purchasing suppliers through regular field visits and enhanced verbal and written communication, improving overall collaboration and supplier performance

Gebze, Kocaeli, Turkey

I managed an annual purchasing volume of €22M across 13 primary and 103 subcategories, leading a team of four senior purchasing experts. Additionally, I leveraged our purchasing scale across five countries (Georgia, Azerbaijan, Kazakhstan, Kyrgyzstan, and Russia), extending Turkey's purchasing power beyond its borders.The most important competencies I demonstrated while working in this position were;o Leadership & Team Developmento Effective Communication & Stakeholder Managemento Strategic Sourcing & Procurement Optimizationo Digital Transformation in Procuremento Contract Negotiation & Risk Managemento Cost Optimization & Process Efficiencyo Supplier Selection, Evaluation, & Relationship ManagementThe main categories I managed include: o Vehicles & Trailerso Information Technology & Telecommunicationso Handling, Lifting Tools & Equipmento Services (Operational and Strategic)o HR Services & Talent Managemento Public Services & Energyo Logistics & Supply Chain Managemento Office Management & Administrationo Professional Serviceso Sales & Marketingo Travel & Corporate Logisticso Production-Related Expenseso Capital & Investment Expenditures

Rumeli Hisarı/İstanbul

Purchasing Category Management of All Borusan Group Companies for below categories with annual volume of 21mioUSD.- Maintenance- Facility Management- Technical Repairs and Modifications- Machinery Spare Parts- Plant Consumables- Paint- Packaging- Raw Materials - Mineral Oils, Additives- Warehouse Management- Lifting Equipments- IFMS (Integrated Facility Management Services)- Construction Machinery Attachments- Outsourced Technical Service Demands- All Technical Capex Categories such as Generators, Compressors, AC/Ventilation, Workshop Equipments, etc.

Çayırova / Kocaeli

Production and Purchasing Unit Manager at Component Rebuild & Hydraulic Center located in Çayırova - Kocaeli. Main jobs done in my workshop were;- Hydraulic Cylinder production, revision and testing for all CAT construction equipment and also other brands such as Bomag, Liebherr.- Hydraulic Pump expertise and revision according to CAT standards.- Revision of Engine Covers for all Construction Machine brands. I managed whole workshop which was 1500 m2 with my 5 officers and 15 expert technician team with different qualifications.I was purchasing all raw materials, components and equipments used for workshop needs and also for future projections.

Istanbul-Turkey

Production planning according to customer delivery plans coming via SupplyOn supply chain collaboration platform. Managing production for on time deliveries, Handling quality issues occured during production phases, Delivering parts to the customer with kanban or scheduled plans, Attending continuous improvement projects, Managing maintenance actions especially for the machine & equipments purchased from abroad, Raw material purchasing such as steel in different grades and suppliers,Purchasing components and spare parts for machine shop.Purchasing new machines and production lines.Managing 70 employees including 5 office staff.

Istanbul-Turkey

Managing CNC turning, CNC milling processes, all surface treatment departments, visual inspection&packaging processes and direct deliveries to customer production lines. Managing 3 office staff and 45 employees in production lines.

Istanbul-Turkey

Product development studies in collaboration with customers and managing the sampling process till serial production starts.Process development studies and implementations with 5S Kaizen and other tools.

Istanbul-Turkey

Managing 4 CAD (modelling) and CAM (machining) experts Preparing aluminium injection part and mold quotations according to the offer requests coming from customers, Coordinating new projects starting from mold production to the the beginning of serial production, Attending team studies to increase the efficiency of the production both in casting and machining processes, Preparing all work instructions,

İstanbul

A production company which is a international supplier of electronics and home applieances plastic injection parts. I worked as production engineer with the responsibility of production area and 3 foremen & 60 workers in 3 shifts.

Kocaeli-Turkey

Mechanical Enginering- Construction Department.

Doctor Of Philosophy - Phd Candidate, Business Administration And Management, General

Master Of Business Administration - Mba, Business Administration And Management, General, 4/4

My thesis subject is; An Application with Artificial Intelligence In Production Purchases: Steel Sector In Turkey

Master Of Science (Msc), Production & Construction Engineering, 85/100

Bachelor'S Degree, Mechanical Engineering, 80/100

High School, Machinery, 4/5

Secondary School, English

Secondary School Education incl. Preperation Class