Mott MacDonald is a global engineering, management, and development consultancy with over 20,000 employees across more than 50 countries and 140+ offices. We work across incredible global industries, delivering exciting work that is defining our future and making an important societal impact in the communities we serve. Our people power our performance – we succeed when they do. Whether you want to grow as a subject matter expert or broaden your experience with roles across our international community, you’re surrounded by global specialists who want to combine their expertise and champion you to be your best. About Thebusinessunit The Energy unit delivers services to clients globally across several sectors including hydropower, nuclear, waste, renewable generation and transmission & distribution networks. Together we provide integrated engineering and project management services across the project lifecycle – from concept and design to construction and operations, to decommissioning or repowering and life extension. Overview Of The Role Mott MacDonald is a globally recognized engineering and consultancy firm, is seeking a highly skilled Battery Energy Storage Systems Engineer to join our growing Energy team. To support and drive the successful integration of battery energy storage systems (BESS) into wind and solar power projects internationally. As a BESS Engineer, you will lead the design, development, implementation, and operation of BESS in renewable energy projects. You'll serve as the Owner's Engineer, providing technical expertise and ensuring seamless integration of BESS into project execution. This is a permanent role and will offer excellent prospects for career development including involvement in different power generation technologies, mainly renewable energy projects.




Provide comprehensive engineering support throughout the lifecycle of BESS energy projects, ensuring adherence to technical specifications, contract management, and stakeholder coordination
Offer expert guidance and recommendations on energy storage systems, renewable energy integration, and project development strategies to clients, energy majors, utilities, and governments
Assess project specifications, energy storage needs, and grid requirements to propose optimal BESS configurations
Assess the technical capabilities and reliability of potential BESS suppliers, ensuring adherence to project specifications and quality standards
Evaluate electrical system design, protection schemes, and interconnection requirements for BESS integration, including grid stabilisation and backup power
Perform simulations and modelling to predict system performance and optimise design
Define key performance indicators (KPIs) and implement data acquisition systems to monitor BESS performance, including energy storage efficiency, response times, and system availability
Analyse performance data to identify trends, assess the health of the BESS system, and recommend maintenance or operational improvements
Develop project schedules, budgets, and resource plans for successful BESS implementation
Collaborate with project teams to manage risks, resolve technical issues,



and ensure compliance with project milestones
Perform on-site inspections to ensure the quality and integrity of BESS components, installations, and interconnections
Develop and implement quality control plans, inspection checklists, and acceptance criteria for BESS systems
Collaborate with commissioning teams to define test protocols and procedures for BESS equipment and ensure thorough verification of system performance and functionality during the commissioning and testing phase
Bachelor's degree in engineering, preferably in electrical/electronical engineering, renewable energy, or energy storage systems. A master's degree or relevant certifications would be advantageous
Prior experience in technical due diligence, owner's engineering, advisory services, and feasibility studies for renewable energy projects and/or energy storage systems
Project management skills, including risk management and coordination with diverse teams
Familiarity with local and international regulations, industry standards, and codes related to energy storage, renewable energy, and grid integration, ensuring compliance and risk mitigation
Excellent written and oral interpersonal skills (English) to communicate with technical and non-technical colleagues and clients. Private medical insurance
Agile/adaptable working – because life isn’t 9-5
Access to our Advanced Employee Networks which support our LGBTQ+, gender, race and ethnicity, disability and parents/carers communities
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Our employees have a stake and a voice in our business, giving them a direct connection to our success through our personal and group performance bonuses.
Your voice matters, with the opportunit

📌 Senior Engineer Manager (Sevilla)
🏢 Mott MacDonald
📍 Sevilla