Senior Buyer

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Energy storage is the most exciting area in energy today. Massive amounts of energy storage are required if renewable energy is to take its rightful place on the electric grid. Invinity provides an alternative to the most common type of battery, lithium-ion because the battery technology that works so well in our pockets doesn’t work as well at the grid scale;

it wears out, limits use, and even catches fire.

Manufactured as a standardised product in a factory, Invinity’s vanadium flow batteries don’t degrade, won’t catch fire, and can be operated continuously from full charge to full discharge for over 30 years. Invinity has 75 megawatt-hours of its modular battery systems in 82 projects across 15 countries - more than any other company in the space. We’ve deployed the largest flow battery systems in the U.S., Canada, Australia, and the UK, and are supported by the UK's National Wealth Fund, some of the world’s leading institutional investors and our projects are backed by major institutions including the U.S. Department of Energy and the UK Government.

A compelling product and recent funding put Invinity in a position to grow dramatically as it addresses the global imperative for stationary energy storage. Join us as we help transform renewable energy into a stable and dependable contributor to the transition to net zero.

Invinity has operations in the UK, Canada and the U.S. and trades publicly in the UK on AIM and in the U.S. on OTCQX. For more information about us visit our webpage.

Location:

Central Belt, Scotland (Hybrid)

Department:
Supply Chain / Procurement

Contract:

Full-time, Permanent

Salary:
Competitive, with benefits

Reports to:

Purchasing Manager

This is a key role within the supply chain team, responsible for ensuring the efficient and cost‑effective sourcing of goods and materials to support production, facilities and spares requirements. As a Senior Buyer, you will manage supplier relationships, negotiate contracts, and drive cost savings while maintaining quality and delivery standards. You will play a critical part in achieving business objectives through effective procurement strategies and inventory control.

We’re looking for a proactive and commercially minded Senior Buyer to join our growing supply chain team. In this role, you’ll take ownership of sourcing and procurement activities, ensuring materials are delivered on time, at the right cost, and to the highest quality standards. You’ll play a key part in supporting production and aftermarket operations during an exciting period of growth.

• Develop and maintain strong supplier relationships to ensure reliability and performance
• Negotiate pricing, terms, and contracts to achieve cost reductions without compromising quality or delivery
• Monitor supplier performance using KPIs and take corrective actions where necessary
• Forecast material requirements for production and spares, aligning with business plans and schedules
• Maintain optimal inventory levels to support production while minimising working capital.
• Identify and implement cost‑saving initiatives within purchasing and supply chain processes
• Collaborate with internal teams (Sales, Production, Finance) on planning and forecasting to ensure material availability
• Proactively identify supply risks and implement mitigation strategies to ensure continuity of supply

• Cost Savings:
  Achieve annual procurement cost reductions of 3–5% through negotiation and strategic sourcing
• Supplier Performance:
  Maintain On‑Time‑In‑Full (OTIF) delivery ≥ 95% across key suppliers
• Inventory Management:
  Keep stock levels within agreed parameters to minimise working capital while ensuring availability
• Lead Time Reduction:
  Reduce average supplier lead times by 10% year‑on‑year
• Compliance:
  Ensure 100% adherence to company procurement policies and quality standards

• Problem Solving:
  Ability to analyse issues and develop practical solutions
• Planning & Organising:
  Skilled in prioritising tasks and managing deadlines
• Initiative:
  Self‑starter with a continuous improvement mindset.
• Commercial…