BESS Engineer

Jinko Power; Sevilla; Presencial; EUR 45.000 - 60.000; Jornada completa

Descripción de la vacante

A leading energy company is seeking an experienced BESS Engineer in Sevilla, Spain. The role involves serving as the technical owner for BESS equipment, leading OEM evaluations, and ensuring project compliance with standards. Candidates must have a Bachelor’s in Electrical Engineering and extensive experience in renewable energy projects. Strong analytical, communication, and coordination skills are essential. A high level of autonomy and proactive approach are expected in this pivotal role, which may require travel within Europe.

Formación

• 5–8 years of experience in the renewable energy or power sector, including 3 years in BESS engineering.
• Proven experience in technical contract negotiations for energy storage projects.
• Strong understanding of control and communication systems integration.

Responsabilidades

• Act as technical owner of all BESS equipment analyses during engineering phases.
• Lead technical and commercial evaluations of OEM proposals.
• Support Procurement in supplier evaluations and recommendations.

Conocimientos

BESS system architecture understanding

OEM technology comparison

Coordination and follow-up

Analytical mindset

Technical rigor

Educación

Bachelor’s degree in Electrical Engineering or related field

Herramientas

AutoCAD

MS Office

Python

Descripción del empleo

Main Responsibility

• Act as technical owner of all BESS equipment analyses during the phases of basic engineering, RFP preparation, supplier evaluation, and contract negotiation.
• Take full technical accountability for recommendations provided to management and procurement, ensuring traceability, justification, and alignment with project objectives.
• Lead technical and commercial evaluations of OEM (Original Equipment Manufacturer) proposals — including PCS, EMS, BMS, DC Blocks, transformers, and auxiliary systems — ensuring full compliance with Jinko Power standards and project requirements.
• Conduct BESS performance analyses , including round-trip efficiency, degradation modelling, DoD and C-rate impact, temperature control, and lifetime estimation under different operational strategies.
• Support Procurement in supplier comparison, scoring, and clarifications , providing clear, data-based recommendations on technical and performance trade-offs.
• Identify and flag potential technical, operational, or warranty risks in supplier proposals, ensuring mitigation measures are addressed before contract signature.
• Participate actively in technical negotiations and contract closure , ensuring that performance guarantees, testing protocols, and interface requirements are clearly defined and traceable.
• Maintain and strengthen relationships with OEMs (Huawei, Sungrow, BYD, CATL, EVE, Gotion, etc.), ensuring effective coordination, timely follow-up, and continuous technical communication throughout design, procurement, and construction.
• Ensure full awareness and application of international standards and regulations applicable to BESS and PCS equipment (IEC, IEEE, UL, NFPA, EN, etc.), including safety, grid compliance, and control logic requirements.
• Evaluate and review system control and communication architectures (BMS, EMS, SCADA, PPC), ensuring functional integration, data exchange integrity, and cybersecurity alignment.
• Review and validate engineering documentation (conceptual, basic, and detailed design), ensuring constructability and technical consistency.
• Coordinate closely with Construction during execution and commissioning , participating in FATs, SATs, and site tests to verify compliance and system performance.
• Prepare technical reports, comparative analyses, risk assessments, and design recommendations for management decision-making.

Requirements

• Bachelor’s degree in Electrical Engineering, Power Systems, or related field.
• 5–8 years of experience in the renewable energy or power sector, with at least 3 years dedicated to BESS engineering, procurement, or construction.
• Proven experience in basic engineering, RFP preparation, supplier evaluation, and technical contract negotiations for energy storage projects.
• Strong understanding of BESS system architecture , including PCS, EMS, BMS, transformers, and auxiliary systems.
• Demonstrated ability to compare and analyze OEM technologies , assess technical advantages, and support commercial discussions.
• Proven experience conducting or witnessing factory and site acceptance tests (FAT / SAT) , commissioning, or early operational validation of BESS systems.
• Strong knowledge of communication and control systems (BMS, EMS, SCADA, PPC) and integration requirements.
• Solid understanding of international standards and regulatory frameworks for BESS and PCS (IEC, IEEE, UL, NFPA, EN).
• Excellent coordination and follow-up skills with equipment manufacturers to ensure on-time delivery of technical information and proper interface alignment.
• Highly autonomous, proactive, and analytical , with ability to manage complex tasks independently and under pressure.
• Excellent written and verbal communication skills in English (Spanish preferred; Polish and Italian are a plus).
• Availability to travel within Europe for supplier meetings, factory testing, and site support.

Preferred Profile

• Direct experience with standalone BESS projects under construction or commissioning for IPPs or EPCs.
• Expertise in BESS performance validation, degradation tracking, and warranty analysis .
• Direct coordination experience with major OEMs (Huawei, Sungrow, BYD, CATL, EVE, Gotion).
• Ability to challenge OEMs technically when needed , maintaining a collaborative yet firm communication style to ensure robust design and performance guarantees.
• Strong ownership, structured work habits, and ability to communicate effectively across multidisciplinary teams.

Professional Skills

• Software : AutoCAD, MS Office, QGIS, PVcase (desirable), DIgSILENT, Python, or equivalent analytical tools.
• Soft skills : Ownership, initiative, analytical mindset, teamwork, assertive communication, and technical rigor.