Principal Systems Engineer - BESS Product Development
Confirmed on the employer's own hiring board on Oct 27, 2026. First seen by Alion on Sep 1, 2026. Fluence Energy scores A on the Alion truth index.
Fluence (Nasdaq: FLNC) is a global market leader delivering intelligent energy storage and optimization software for renewables and storage. Our solutions and operational services are helping to create a more resilient grid and unlock the full potential of renewable portfolios. With gigawatts of successful implementations across nearly 50 markets, we are transforming the way we power our world for a more sustainable future. For more information, please visit fluenceenergy.com.
Job Description:
As a Principal Systems Engineer, you will drive system architecture, technical meetings,and engineering excellence across Fluence’s product portfolio. You will lead the definition of complex multi-megawatt (multi-MW) system architectures, guide multidisciplinary engineering teams, and directly influence product roadmaps.
This role requires deep technical expertise, exceptional systems thinking, and the ability to solve the energy storage industry's most challenging engineering problems while mentoring engineers and establishing world-class systems engineering best practices across the organization.
Key Responsibilities
Act as the systems architecture lead for utility-scale energy storage products (BESS) and platform development.
Develop, maintain, and oversee product system architecture, integrating batteries, power conversion systems (PCS), transformers, communications, auxiliary power, mechanical, software, and controls.
Lead system-level requirements, functional decomposition, interface control documents (ICDs), and technical specifications using tools like JAMA Connect or MBSE tools
Drive technical trade-offs and resolve complex, cross-disciplinary challenges
Lead preparationfor technical reviewsand provide technical guidance for major Product Development initiatives
Partner with Product Management, engineering leadership, and business stakeholders to define long-term technology roadmaps.
Convert customer, market, regulatory, and grid-connection requirements into highly scalable technical architectures.
Champion platform standardization, modularity, and product scalability across multiple generations of products
Lead system-level trade studies balancing performance, safety, reliability, manufacturability, cost, and schedule.
Own complex integration strategies across electrical, mechanical, controls, communications, and cloud interfaces.
Define verification and validation (V&V) strategies. Collaborate with lab and field engineering teams to oversee hardware testing, prototype validation, FAT/SAT protocols, and full qualification
Support, lead, and facilitate Root Cause Analysis (RCA), Management of Change, and incorporate field feedback into future designs
Lead product safety engineering activities, including DFMEA, FMEA, HARA, and Fault Tree Analysis (FTA)
Ensure product compliance with global standards, codes, and regulatory requirements (e.g., UL 9540, UL 9540A, IEC 62933, NFPA 855, NFPA 70, IEEE, etc).
Actively mentor, coach, and guide Systems Engineers across multiple product lines.
Drive collaboration across Product Management, Hardware, Software, Controls, Manufacturing, Quality, and Service teams
Required Qualifications
Bachelor's or Master's degree in Electrical Engineering, Systems Engineering, Mechanical Engineering, Computer Engineering, or a related technical discipline.
12+ years of industry experience in systems engineering, product development, or system architecture within renewable energy or power systems.
Extensive experience with utility-scale Battery Energy Storage Systems (BESS), Power Conversion Systems (PCS), microgrids, or grid integration
Deep understanding of systems engineering principles, including requirements development, functional decomposition, interface management, system architecture, and verification & validation.
Strong technical background spanning electrical, mechanical, controls, embedded, and software systems.
Proven track record of conducting safety and risk assessments (DFMEA, FMEA, HARA) and root cause analysis.
Experience developing products compliant with international safety and performance standards (UL 9540, UL 9540A, IEC 62933, NFPA 855, etc.)
Our Culture
At Fluence, our culture is the foundation that drives our ambitious growth strategy and fuels our mission to transform the future of energy. Our core cultural pillars empower us to innovate, collaborate, and lead with purpose, ensuring we continue to deliver unparalleled value to our customers and the world.
Unleash Voices
We believe every voice matters. We encourage openness, active listening, and decisive action to create a culture where everyone has the opportunity to contribute to our success. We foster an environment where diverse perspectives are heard and valued, driving innovation and progress.
Customer Fluent
Our customers are at the heart of everything we do. We’re committed to delivering exceptional value that exceeds expectations by understanding our customers' needs and adapting swiftly to meet them. Our deep focus on customer satisfaction drives us to continuously improve and innovate.
Infinite Impact
We are committed to creating the impossible. We push boundaries to deliver sustainable, game-changing solutions that shape a brighter, more energy-efficient future for all. Our team is passionate about making a lasting impact that will resonate for generations to come.
All In
We are all in for growth. Our teams are relentlessly focused on identifying and seizing opportunities that propel us forward. We embrace an ownership mindset, pushing ourselves and each other to accelerate progress and create lasting success.