EFA GROUP comprises companies in Aerospace, Security, Defense, and Industrial Cooperation with a solid international presence. EFA GROUP currently employs more than 400 people, most of whom are engineers and scientists. The GROUP has established offices across 6 international regions: Greece, Cyprus, Switzerland, USA, UAE, and Singapore to serve its customers in 34 countries worldwide. EFA GROUP includes EFA VENTURES (Supply Chain Management and integrated services), AEROSPACE VENTURES (Industrial Participation and related services), SCYTALYS (Systems Integration and Software), ES SYSTEMS (MEMs & IoT Integration), EPICOS (Global Defense B2B Information Platform), UCANDRONE (Unmanned Systems), AETHER AERONAUTICS (Target Drones), STHENOS AI (Intelligence Solutions), THYREOS CYBER (cyber security), SUPERIOR AIR (aviation services & specialized aerial missions).

ES Systems is a developer and manufacturer of high-quality sensors based on micro-electronics technologies. ES Systems, MEMS based, sensors and sensor systems, which are produced via qualified industrial processes, measure pressure, fluid properties and temperature. Combining multiple discipline capabilities, ES Systems delivers technologically advanced sensor solutions in a fast and efficient way starting from the concept to prototyping and full production and has developed innovative smart, autonomous, low power, and wireless sensors ideal for integration to IoT systems and solutions.

About the job
We are looking for a Junior Buyer to support procurement operations and ensure the timely availability of materials required for production. The role involves coordinating with suppliers, managing purchasing documentation, and supporting sourcing activities in a fast-paced, engineering-driven environment.

Responsibilities

• Handle purchasing activities to ensure on-time sourcing of materials for production need
• Maintain and update purchasing documentation, including purchase requests, purchase orders, contracts, and invoices
• Monitor supplier performance and perform necessary follow-ups to ensure successful order completion
• Identify potential new suppliers and contribute to building an international vendor network
• Collaborate with internal teams (Engineering, Production, Finance) to align procurement with operational requirements
• Support sourcing processes, including price comparisons and supplier communication

Requirements

• Bachelor’s degree in Engineering, preferably in Mineral Resources, Chemical, Environmental or Materials Science, or Electrical/Electronics Engineering
• Advanced Excel skills (VLOOKUP, Pivot Tables)
• Fluency in English
• ERP experience is a plus (Dynamics 365 F&O will be considered an asset)
• 1–2 years of experience in a similar procurement or purchasing role
• Good understanding of sourcing and procurement processes
• Strong organizational skills and attention to detail
• Ability to manage multiple tasks and follow up effectively
• Structured and methodical working style
• Clear communication and collaborative mindset

We offer:

• Competitive remuneration package
• Private Medical Insurance package
• Continuous learning in new technologies
• Opportunity to work in large-scale projects with talented people