Senior Buyer
Central Belt, Scotland (Hybrid)
Department: Supply Chain / Procurement
Contract: Full-time, Permanent
Salary: Competitive, with benefits
Reports to: Purchasing Manager
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 can even catch 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 25 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 U.K., and are supported by the UK’s National Wealth Fund, leading institutional investors, and 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 U.K., Canada and the U.S. and trades publicly in the U.K. on AIM and AQSE and in the U.S. on OTCQX. For more information about us, visit our webpage.
Join Our Team as a Senior Buyer
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.
Key Responsibilities
* 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.
Success Metrics
* 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.
Core Competencies
* 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 awareness: Understands market trends and cost drivers.
* Communication & collaboration: Effective communicator with internal and external stakeholders.
* Analytical thinking: Uses data to inform decisions and optimise outcomes.
* Teamwork: Works collaboratively to achieve shared goals.
Required Education & Experience
* Relevant qualification in Procurement or Supply Chain Management (e.g. CIPS).
* Minimum of 5 years’ experience in a procurement or buying role within a manufacturing environment.
* Strong negotiation and supplier management skills.
* Solid experience within a Production or Manufacturing environment, ideally within both small and large organisations.
Desirable
* Knowledge of international logistics and trade compliance.
* Exposure to Lean manufacturing or continuous improvement principles.
* Chinese language skills would be a huge plus but are not essential.
Personal Attributes
* Strong communicator with the confidence to challenge and influence at all levels.
* Emotional intelligence and an ability to progress problems into solutions.
* Highly organised with the ability to manage competing priorities in a deadline‑driven environment.
* Commercially astute with a mindset for continuous improvement.
* Comfortable working independently while also contributing to a collaborative team environment.
This role may involve travel, potentially to Canada & Asia as well as Europe.
At Invinity, we are actively focused on increasing the representation of women across all levels of our organisation, particularly within our engineering, manufacturing and technical teams. We believe that diverse perspectives drive better innovation, and we are committed to providing a working environment where women can thrive, lead, and progress their careers in STEM.
We support this through inclusive hiring practices, equal pay for equal work, flexible working options, leadership development and continuous review of our policies to ensure they meet the needs of all genders and life stages.
Our culture is one of respect, inclusion, and empowerment — where every individual can contribute fully and confidently to a sustainable energy future.
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