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BESS Technical Specialist

Mint Selection London, United Kingdom
Hybrid work

Publication date: 05/08/2026

Mint Selection have partnered with one of the UK's leading Independent Power Producers (Private Equity-backed) who are developing and building cutting-edge large scale Energy Storage projects across the UK. Reporting to the Technical Director, the Battery Technical Specialist will be part of a team responsible for evaluating, selecting and implementing Battery Energy Storage Systems (BESS) into grid scale energy storage projects across Europe.

Responsibilities

Market intelligence and supplier evaluation of BESS Suppliers; Sizing and selection of BESS; Technical definition / sizing of BESS projects; Compliance with market requirements; Understanding of policy, standards and grid code requirements as they relate to BESS; Capacity maintenance optimisation; Augmentation strategies; Tendering for Battery Energy Storage suppliers; Drafting and managing tenders for BESS projects; Drafting and negotiation of technical specifications for BESS contracts, including specification, document requirements, performance warranties and associated testing; Specifying and witnessing Factory Acceptance and Site Acceptance testing for BESS; Evaluation of tender returns and managing internal review processes; Automation, through AI or other methods, of the BESS evaluation and selection process; Support the handover of the project to the project delivery team and provide high level technical support during project delivery; Evaluation of BESS performance in operation and delivery and feeding performance back into BESS supplier evaluation; Design Development of future projects; Support the Technical Director in developing designs and specifications and evaluating contractors for future battery and hydrogen-ready gas peaking plants

Requirements

Experience in techno-economic supplier evaluation; Experience in selection or delivery of BESS projects or equivalent; Attention to detail; Strong written and verbal communication skills; Flexibility and adaptability; Fast learner

Nice to have

Experience in working with Chinese suppliers preferable; Ability to combine commercial and technical knowledge to see the overall project picture; Electrical engineering
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