Job Description

Role: Energy Storage Systems Engineer (BESS)
Location: UK (Hybrid Working)
Salary: Competitive
Role Overview
A global leader in green technology is seeking an experienced Energy Storage Systems Engineer to join its UK team. Operating across wind, energy storage, and green hydrogen, the organisation develops cutting-edge solutions that accelerate the transition to clean energy. Recognised internationally for innovation and sustainability, it has achieved carbon neutrality across operations and is targeting full value-chain neutrality by 2028.
This role will focus on the technical design, integration, and commissioning of large-scale Battery Energy Storage Systems (BESS), working closely with internal product teams, EPCs, and contractors to deliver projects that set new standards in safety, reliability, and performance.
Key Responsibilities

• Lead the integration of BESS DC systems, AC systems, and Energy Management Systems (EMS) at project sites.
• Manage technical design and project delivery of BESS assets from concept through commissioning and post-commissioning support.
• Develop and review integration test plans, ensuring compliance with UK grid codes, standards, and regulations.
• Oversee design and integration of control systems, coordinating with internal and external stakeholders.
• Prepare specifications, data sheets, bid evaluations, and ensure procurement alignment.
• Review safety-critical systems, including thermal management and fire suppression, ensuring compliance with UL9540A and UK HSE standards.
• Provide technical input into innovation initiatives and roadmap development for ESS products.
• Support HAZID, HAZOP, and design review workshops to identify and mitigate technical risks.
• Monitor operational performance of BESS assets, analysing system data, leading root cause investigations, and implementing corrective actions.

About You

• Technical Expertise ? In-depth knowledge of battery technologies (LFP/NMC), PCS functionality, protection, communication interfaces, and system-level design.
• Project Delivery ? Proven experience leading utility-scale BESS projects, including FATs, SIT/SAT, and commissioning.
• Grid & Compliance Knowledge ? Familiarity with ENA G99, UK grid compliance processes, and dynamic system behaviour (inertia, fault contributions, reactive power).
• Stakeholder Engagement ? Strong coordination skills with EPCs, contractors, and internal teams, ensuring clear communication and aligned objectives.
• Problem-Solving Mindset ? Proactive in identifying risks, managing technical issues, and driving innovation in ESS integration.

Desirable Skills

• Degree in Electrical Engineering, Power Systems, or related discipline.
• 6 years of relevant industry experience.
• Strong understanding of standards (ISO, IEC) and safety codes.
• Experience in HV/MV grid integration and commissioning.
• Full right to work in the UK.

Benefits

• Competitive salary with performance-related bonus.
• Career development and support for professional qualifications/chartership.
• Private medical cover and life assurance.
• Electric vehicle leasing scheme.
• Cycle to work scheme.
• Company-wide social events and long-service recognition.

About Us
Climate17 is a purpose-driven, international Renewable Energy & Sustainability recruitment firm. We support organisations committed to environmental sustainability and the decarbonisation of the energy sector.
Inclusive Application Process
Climate17 is committed to creating a diverse, inclusive, and equitable workplace. We believe there is no solution to climate change without people. We aim to increase diversity across all areas and as such, we are committed to partnering with clients and candidates to create an inclusive and sustainable regenerative world.

Skills Required