Systems Engineer II

The Systems Engineer will support the reliability, performance, and continuous improvement of Plug Power’s hydrogen fueling infrastructure products. Efficiency analysis is the core of this role - mass and energy balance, ROI modeling, and test validation - supported by process sustaining work in change control, documentation, and operational requirements management.

The work spans thermodynamics, process controls, and systems data as applied to GenFuel infrastructure deployed across 300+ customer sites. Equipment in scope includes liquid hydrogen storage systems, dispensing infrastructure, cryogenic components, pressure systems, PLC-based controls, and process safety equipment. You will work within a collaborative engineering team and engage with field and product stakeholders as part of your day-to-day workflow.

Core Duties and Responsibilities

• Analyze hydrogen system efficiency across the installed base using mass and energy balance modeling, quantifying losses, identifying degradation trends, and investigating thermal and flow capacity behavior.
• Build and defend ROI analyses to support engineering change decisions, retrofit programs, and product improvement initiatives.
• Develop and validate test conditions for system-level diagnostics including pass/fail criteria definition, methodology documentation, and data-driven results verification.
• Define, document, and maintain system-level requirements and functional specifications for GenFuel components and assemblies.
• Own process documentation integrity across GenFuel systems, maintaining cause & effect matrices, alarm testing procedures, and control narratives.
• Execute and enforce the MOC process for all design and field changes, ensuring proper assessment, approval, and stakeholder communication.
• Contribute to cross-functional projects as part of a broader engineering team spanning operations, field, and design disciplines.

• Bachelor’s degree in chemical, mechanical, or controls engineering or closely related field.
• 0-5 years of engineering experience.
• Demonstrated ability to develop mass and energy balance models and apply them to real system performance problems.
• Demonstrated ability to build quantitative analyses - ROI models, efficiency calculations, or test condition development from first principles.
• Proficiency with data analysis tools (Python, MATLAB, Excel-based modeling, or similar) to process operational datasets and support engineering conclusions.
• Ability to read and interpret P&ID drawings and apply them to system troubleshooting and change analysis.
• Familiarity with process controls concepts, instrumentation, or sensor-based systems.
• Clear written and verbal communication skills; able to present technical findings to both engineering and non-engineering audiences.
• Self-directed and organized; capable of managing workstreams independently in a remote environment.

Preferred

• Experience with hydrogen, electrolyzers, fuel cells or other electrochemical or cryogenic systems.
• Familiarity with SCADA, PLC-based controls, or industrial instrumentation.
• Familiarity with HAZOP and LOPA methodology as applied to process safety analysis.

$79,200.00 - $118,800.00

We offer a fantastic total rewards package at Plug, and a brief summary is below: *Base salary is determined on a number of factors including but not limited to education, experience, skills, and geography. These factors are considered when making an offer of employment. If you are interested in this position, we’d ask that you apply. *The above pay range, may not take into account local geographic pay variations. If there is an applicable geographic differential, a member of the HR team can discuss that with you. *Health, Dental & Vision Insurance eligibility starting from the first day of hire *401(k) with 5% company match *Bonus eligibility *Paid time off including vacation, personal and sick time *Paid Holidays *Wellness Reimbursement Program *Potential to apply for Tuition Reimbursement *Fertility and Family Building Benefit *Employee Referral program *Employee Assistance Program Plug Power Inc. is committed to creating a diverse environment and is proud to be an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, gender, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status.