BESS Engineer

A bit about Field:
Field is an international developer, owner, operator, of renewable infrastructure. Our Founder and CEO is a successful entrepreneur who previously co‑founded a green energy supplier. We have robust pipelines of BESS projects across the UK, Italy, Spain, and Germany – and strong financial backing. Our most recent fundraise was a £200 million investment from DIF Capital Partners (now CVC DIF). This will support our mission to grow internationally, and ultimately to build and develop a robust global BESS portfolio.

Department: Dev Con

Employment Type: Permanent – Full Time

Location: UK – London

As Lead BESS engineer you’ll be responsible for leading the design and selection of battery systems that will be built across Field’s portfolio of multi‑GWh duration energy storage projects in the UK, Spain, Italy and Germany.

This will require you to keep abreast of technological developments in battery cell design and development and implications for battery container design and power conversion equipment.

It will also involve some travel to manufacturing sites and industry conferences to witness tests, engage at a deeper level on specific project issues and maintain relationships with technical and commercial counterparts.

This role will encompass the full battery lifecycle and mean you will also be working closely with the development, construction and operations teams to support their roles in site outline design, noise assessments, interface management with BOP contractors, as well as supporting ongoing asset management to keep our batteries running at peak performance.

• Developing conceptual designs for new battery storage systems; short‑duration, long‑duration and those with more advanced capabilities such as inertia, short‑circuit and black start services.
• Supporting the tender evaluations for new battery systems.
• Assisting the construction team with monitoring the quality of commissioning of new battery sites, including visiting BESS suppliers for Factory Acceptance Tests.
• Leading engagement with BESS suppliers to anticipate new battery designs that will affect how we plan and develop new sites.
• Supporting the legal and contractual teams with technical expertise to understand the key contractual risks and avoid contractual disputes.
• Developing our in‑house approach to long‑term battery management to minimise operational risks and optimise battery health.

This is a broad and varied role that would suit someone with an engineering (preferably electrical) or physical science background who is curious, has an entrepreneurial mindset and wants to work with rapidly evolving technology.

Key responsibilities include:

A Bit

About You:

• You like the technical detail and are not afraid to get your teeth in to solving new problems with new technology.
• You’re an open, clear communicator who enjoys working collaboratively – there are no ‘lone wolves’ at Field, we’re all in this together.
• You’re very organised – you’ll be spinning a few plates at once, so you’ll need to have tried and tested methods for keeping on top of a varied workload at your fingertips.
• You’re enthusiastic, curious and knowledgeable about the energy storage industry.

• An engineering or physical science degree with at least 6 years’ experience in the energy industry, preferably with experience at an energy equipment manufacturer, energy asset owner or energy design consultancy.
• A deep understanding of at least one of the following technologies:
• Inverters
• Battery cells and Battery Management Systems
• HV and MV Electrical power systems
• Experience with power system design or modelling is highly desirable.
• Able to communicate complex concepts to non‑technical colleagues.
• Able to communicate effectively with contractors and suppliers from around the world.
• Willingness to occasionally travel to sites in the UK, Germany, Italy and Spain and battery equipment suppliers in Europe and China.

We’re offering a competitive compensation package, including participation in our employee share scheme which rewards all employees for the growth of the…