Fluence is the leading global energy storage technology and services company, created and backed by Siemens and AES, two industry powerhouses and pioneers in energy storage. Fluence unites the scale, experience, breadth, and financial backing of the two most experienced icons in energy storage.
Our mission is to create a more sustainable future by transforming the way we power our world. Energy storage is critical to this transformation, yet today the market is fragmented and customers face the challenge of finding a trusted technology partner amidst conflicting technical claims, inexperienced vendors and installers, and new market entrants with limited power sector knowledge.
Fluence brings the proven technology solutions and services that overcome the commercial and regulatory barriers that stand in the way of modernizing our energy networks. We are the partner that can deliver at a global scale with the most experienced and knowledgeable team in the world.
As a Principal Systems Engineer, you will lead and drive system-level design, integration, and optimization for grid-scale Battery Energy Storage Systems (BESS). This senior role will focus on delivering innovative, safe, and cost-effective solutions while ensuring compliance with global standards and alignment with customer needs.
Key Responsibilities Include:
· Develop and oversee system architecture for multi-MW BESS projects, integrating battery systems, power conversion systems (PCS), transformers, communication hardware, controls, and auxiliary power systems.
· Review system requirements, ensuring compatibility and performance across all components. Drive the overall electrical system design and validation process.
· Lead advanced load flow studies, short-circuit analysis, protection coordination, Harmonic , EMC and arc flash studies to ensure system reliability, safety, and grid compliance.
· Develop and approve single-line diagrams (SLDs), power flow configurations, and control schematics for complex energy storage solutions.
· Act as the technical authority for New Product Introduction (NPI), guiding design processes, lifecycle management, and risk assessments for the BESS system.
· Collaborate with cross-functional teams (mechanical, thermal, software, testing) to ensure end-to-end system integration and alignment with customer and project goals.
· Oversee system performance analysis, focusing on efficiency optimization, energy losses, and dynamic system modeling to validate performance under various operating conditions.
· Provide leadership in selecting and validating key electrical components, including breakers, relays, fuses, inverters, transformers, batteries, and low-voltage switchgear.
· Review and ensure product compliance with global and regional standards (UL 9540, NFPA 70, IEC, NEC, IEEE). Lead the certification processes and safety compliance audits.
· Direct and mentor engineers in hardware testing strategies, FAT/SAT protocols, and prototype validation processes, ensuring systems meet stringent quality benchmarks.
· Collaborate with vendors to evaluate, qualify, and optimize electrical subcomponents, fostering strategic partnerships.
· Lead critical failure mode analyses (DFMEA) and root cause assessments (RCA) to ensure system reliability and continuous improvements.
· Act as a technical advisor, providing expertise to project development, commissioning, and operations teams while incorporating feedback into system enhancements.
· Deliver system-level documentation, including technical manuals, interface guides, and site design recommendations for internal teams and external stakeholders.
· Drive innovation by identifying opportunities for scalability, cost reduction, and process improvements across the product lifecycle.
· Mentor and develop engineering teams, fostering technical excellence, collaboration, and leadership within the organization.
Job Qualifications & Skills
· Education: Bachelor’s or Master’s degree in Electrical Engineering (Full-Time) or equivalent.
· Experience: 12-18 years of experience in Electrical Systems Design for Renewables (BESS, Solar, Wind) or Power Generation industries, with a strong focus on system-level engineering.
· Technical Expertise:
o Experience in designing, validating, and integrating BESS systems, including component selection and system sizing.
o Proven expertise in power flow studies, short-circuit analysis, protection coordination, harmonic analysis, and arc flash studies.
o In-depth knowledge of batteries, PCS, inverters, transformers, BMS, controls and low/medium-voltage switchgear.
o Strong understanding of grid compliance and global standards (IEEE 1547, UL 9540, IEC 62933, NFPA 70, NEC).
o knowledge of tools like ETAP, MATLAB Simulink, or EMTP-RV for electrical system simulations is plus.
o Experience with the NPI process and familiarity with tools such as JIRA, JAMA, TestRail, or similar product lifecycle management platforms is preferred.
o Strong presentation, documentation, and technical communication skills, with the ability to interface effectively with global teams and executive stakeholders