Software Quality Assurance Engineer - BESS Control Systems

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 Key Responsibilities

• Automation Ecosystem Management Maintain, enhance, and scale our existing automated testing frameworks.
• Performance Engineering Utilize our high-performance Rust and Python test environments to identify and mitigate P99.9+ latency outliers, ensuring performance for critical controls operations.
• Infrastructure & Simulation Manage and expand containerized (Docker) simulation models and HMI performance testing environments to support agile development and stress-test system responsiveness.
• Integrated HIL Testing Execute and refine HIL API integration test suites, validating grid forming applications and integrated system performance.
• Commissioning & Integration Support Serve as a technical escalation point for live remote commissioning of production sites, troubleshooting real-time integration issues across Modbus (TCP/RTU), MQTT (Sparkplug B), or PostgreSQL.
• Agile Leadership Drive the adoption and meticulous enforcement of Scaled Agile Framework (SAFe) product strategy and agile methodologies across engineering teams; act as a strong advocate for process discipline in a process-dynamic environment.
• Technical Leadership Lead technical workshops, mentor junior QA and systems engineers, and maintain robust process documentation to propagate best practices across the engineering teams.
• Quality Metrics Drive continuous improvement in test coverage, reliability, and CI/CD pipeline efficiency.

Minimum Qualifications

• Education & Experience

• B.S. in Electrical Engineering, Computer Science, or a related technical field with 5+ years of experience in software quality assurance, test engineering, or a related field within the energy storage, power systems, or industrial controls industries.

• OR an M.S. degree with 3+ years of equivalent industry experience.

• Core Skills

• Strong proficiency in Python (or similar object-oriented scripting language) for test automation and system simulation.

• Experience working within and contributing to Agile/Scrum methodologies.

• Tools Solid experience with CI/CD pipelines (e.g., Jenkins), Git version control, and Linux/Bash environments.
• Soft Skills Excellent ability to write technical documentation, lead cross-functional workshops, and drive issue resolution.

Preferred Qualifications

• Agile Strategy SAFe Certification (e.g., SAFe Agilist, SAFe Practitioner) or deep, proven experience implementing and scaling SAFe product strategies in complex hardware/software ecosystems.
• Advanced Programming Practical experience with Rust, particularly in the context of high-performance tooling or simulation.
• Specialized Testing Extensive background in Hardware-in-the-Loop (HIL) testing, API validation (REST/GraphQL), and HMI/SCADA performance validation.
• Protocols Deep expertise in networking and messaging protocols, specifically Modbus (TCP/RTU), OPC UA, and MQTT (Sparkplug B).
• Power Systems Familiarity with BESS control algorithms, Grid Forming Inverters, Primary Frequency Response, or power systems analysis tools (MATLAB/Simulink, Wireshark).
• Infrastructure Proficiency in Docker container creation, orchestration, and infrastructure troubleshooting.
• Analysis Tools Competency with MATLAB/Simulink and Wireshark for deep system troubleshooting.

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 ev…