Principal Quality Assurance Engineer; m​/f​/d

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

As a Lead QA Engineer at Fluence, you will play a crucial role in validating gigawatt-scale Battery Energy Storage Systems (BESS) and ensuring the high availability of our control software. Taking ownership of an established, high-performance automation ecosystem, you will focus on end-to-end validation of complex power systems, grid-forming integration, and advanced hardware-in-the-loop (HIL) testing.

• 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 enforcement of Scaled Agile Framework (SAFe) product strategy and agile methodologies across engineering teams, acting as strong advocate for process discipline in a 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.

• Education & Experience:
  
  M.S. degree in Electrical Engineering, Computer Science, or a related technical field 8+ years of experience in software quality assurance, test engineering, or a related field within the energy storage, power systems, or industrial controls industries.
• 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, and Linux/Bash.
• Soft Skills:
  
  Excellent ability to write technical documentation, lead cross-functional workshops, and drive issue resolution.

• 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…