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

Stellenbezeichnung: Principal Quality Assurance Engineer (m/f/d)
## Principal Quality Assurance Engineer (m/f/d)
Apply remote type:
Hybrid (2-3 days in Office) locations:
Germany - Erlangentime type:
Full time posted on:
Posted Todaytime left to apply:
End Date:
August 31, 2026 (30+ days left to apply) job requisition :
JR101454

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
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* Job Description:

** 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.
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* 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 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.
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* Minimum Qualifications:

**
* 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.
** Required Qualifications and

Experience:

*** 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.

Qualified candidates are requested to submit a resume and cover letter at  for consideration.
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