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What You’ll do We are seeking a technically strong and commercially minded Senior Project Engineer to support utility scale photovoltaic (PV) + Battery Energy Storage System (BESS) projects. This hybrid role requires deep, hands on experience with both large scale PV and battery storage systems — including battery chemistries, BMS/EMS, power conversion systems (PCS), thermal systems, safety and certification standards, lifetime/degradation modelling, and commercial revenue stacking/dispatch strategies. The successful candidate will translate BESS and PV technical performance into procurement strategy, cost estimation, vendor evaluation, contractual requirements, and project finance diligence. Travel up to 25% required. Apply now, read the job details by scrolling down Double check you have the necessary skills before sending an application. Establishing and managing technical requirements in contractual documents for Engineering, Project Management and Construction (EPC) engagements Support the Construction team in EPC selection including contract negotiation Assist the Project Management in the construction of a project in a timely manner by providing necessary engineering support Complete design and submittal reviews and approvals as necessary for projects in development and construction Manage Owner’s Engineering as assigned as necessary for Construction team support Conduct site visits as necessary to support Construction team progress and milestone verification with lending parties and 3rd party independent engineers Support the engagement of Independent Engineering firms selected for 3rd party financing of projects for execution Provide technical diligence support for Project Finance Support the business with critical lessons learned to ensure project budgets and expected returns are aligned with current market expectations Deep knowledge of BESS technologies and architectures, including battery chemistries (Li ion variants and alternatives), cell/module/pack/system design, BMS, PCS/inverter technologies, thermal management and fire mitigation strategies. Codes, standards and safety: experience with NFPA 855, UL 9540/9540A, IEEE 1547, IEC standards and local regulatory requirements for energy storage. Practical experience integrating BESS with PV plants, substations, protection & control schemes and utility interconnection requirements. Familiarity with project financing structures and independent engineering diligence focused on BESS risk areas (performance degradation, warranties, insurance, testing). Ability to identify key technical risks from site documents and translate them into commercial mitigations in contracts and budgets. Bachelor’s degree in Electrical Engineering (preferred) or equivalent technical degree. CAD experience (AutoCAD, SketchUp, etc.) Advanced knowledge of performance and storage modelling tools such as PVsyst, PVsol, StorageVAT, SAM, Matlab/Simulink or equivalent. Demonstrated experience with BESS-specific modelling or vendor tools for lifetime, thermal and degradation analysis. Willingness and ability to travel up to 25% for site visits and stakeholder meetings. Extensive experience designing and delivering utility scale PV + BESS projects, including substations, PCS/inverter selection, and energy storage integration. Experience with civil and site considerations impacted by BESS installations (e.g., transformer/PCS pads, HVAC/thermal, fire suppression layouts, segregation). Hands on experience in construction support, commissioning and technical document review for both PV and BESS scopes. Why you’ll make a great member of the teamPersonal qualities Excellent attention to detail, problem solving and the ability to propose pragmatic technical/commercial solutions. Strong communication skills to represent technical positions to commercial stakeholders, lenders, and independent engineers. 135,000 to $150,000 annually plus a discretionary 20% annual bonus. ~ Health, dental, prescription, and vision care for US team members starts on your first day of employment. ~ Retention bonus ~11 paid holidays ~ Hybrid working environment (Tuesday, Wednesday & Thursday in office, Monday and Friday remote) ~ Monthly personal phone bill reimbursement of up to $100 and a monthly commuter benefit of up to $150. We pride ourselves on being an inclusive community, where every individual is valued and treated with respect. From operating safely to ensuring our solar projects are responsible and promote biodiversity. Alongside a competitive salary, we offer a variety of benefits including annual bonus, retention bank, health insurance, pension, and other local benefits. Join an agile, international team working across 15 countries to power the future and positively impact people, communities, ecosystems and biodiversity across the world. Lightsource bp truly cares about creating a sustainable future through safe, responsible and meaningful low-carbon energy projects. We are an equal opportunity employer and value diversity at our company. We do not discriminate on the basis of race, religion, color, national origin, sex, gender, gender expression, sexual orientation, age, marital status, socioeconomic status, neurodiversity/neurocognitive functioning, veteran status or disability status. Individuals with disabilities may request a reasonable accommodation related to LSbp’s recruiting process (e.g., accessing the job application, completing required assessments, participating in telephone screenings or interviews, etc.).