Product Service & Sustaining Engineer - H2 Systems Position Summary This Product Service and Sustaining Engineer role will drive design and product improvement eﬀorts to achieve high operational availability, reliability and low life-cycle maintenance cost of Plug Power hydrogen infrastructure products. This role bridges engineering, ﬁeld operations, and customer support, ensuring reliable performance, maintainability, and continuous improvement of systems across their lifecycle. The ideal candidate brings a multidisciplinary background spanning electrical systems, controls, and mechanical engineering, along with strong problem-solving and cross-functional collaboration skills. Examples of equipment in the scope of this role include but are not limited to liquid hydrogen storage tanks, cryogenic pumps, vaporizers, diaphragm and piston compressors, pressure vessels, pneumatic valves, electrical control cabinets, PLCs, and process safety equipment (PSVs, ﬂame detectors, gas detectors). Core Duties and Responsibilities Build and maintain technical product knowledge Develop and release service engineering deliverables to support maintenance, commissioning, monitoring & diagnostics, operations, and service cost estimation for new product introductions Ensure serviceability, reliability, and lifecycle cost considerations are integrated into product design and release processes Collaborate with vendors, development engineering, and supply chain teams to investigate and resolve system and component failures Perform root cause analysis using 8D problem solving methodology and drive corrective and preventive actions Develop, release, and execute field design changes, retrofits, and product improvement programs Maintain configuration control and ensure proper documentation of updates across installed base Apply and drive the Management of Change (MOC) process to ensure all design and field changes are properly assessed, approved, documented, and communicated across stakeholders Support customer escalations with timely technical analysis and resolution plans Act as a technical liaison during commissioning activities, working closely with customers, field technicians, and subject matter experts Establish and maintain warranty disposition criteria and processes Analyze warranty data and field performance trends to inform design improvements and cost control strategies Collaborate directly with customers to provide product KPIs, incident management updates, and progress on improvement initiatives Communicate technical issues, resolutions, and reliability improvements in a clear and structured manner Travel to customer locations to perform technical functions including repair and troubleshooting as required; author incident reports and communicate with onsite personnel Develop and provide technical training to external clients and internal staﬀ members including on- site Service Technicians Write and execute test plans for system level component diagnostics and reliability improvements Provide 2nd and 3rd tier engineering technical support as needed Build eﬀective internal relationships with colleagues; work both inter-departmentally and cross- functionally as needed for project assignments Manage project assignments with a focus on delivering high caliber results in a timely fashion Maintain an understanding of high priority engineering projects; be prepared to contribute as needed to priority projects Represent Plug Power in a professional manner in all interactions; support the philosophy of the organization to provide high-performing technology to maximize customer satisfaction Use expert level knowledge of change processes, documentation practices, safety protocols, and analytical tools to drive changes through the company. Exempt employees are expected to work as many hours as is necessary to complete their job responsibilities. This may require they work more than eight hours a day and more than ﬁve days or 40 hours per week Perform other duties as assigned Education and Experience Bachelor’s degree in electrical, mechanical, systems or controls engineering. Five (5) to ten (10) years of related work experience. Mechanical and electrical system aptitude to understand system operations, diagnose failure modes and causes, and resolve issues. Strong knowledge of automation systems, including PLCs, SCADA, and distributed control systems (DCS) Understanding of process engineering principles, particularly as applied to gas handling, ﬂuid systems, and energy infrastructure Familiarity with industrial codes and standards (e.g., electrical, pressure systems, safety, and hazardous area classiﬁcations) and ability to apply them in design, troubleshooting, and ﬁeld modiﬁcations Ability to travel as needed to carry out duties of the position. Proﬁciency in analyzing engineering data and troubleshooting operational performance. Ability to read and interpret electrical schematics, P&ID drawings, and other related project drawings. Superior communication skills. Ability to manage complex projects and multi-task eﬀectively. Excellent follow-through. Must be driven and self-motivated. Pay Rate: $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. Our employees create products every day that are changing the way energy is produced and delivered. We thrive on innovation by fostering a learning environment that creates new, real-world products and applications. Join our team as we rapidly expand into key markets like zero-emission on-road vehicles, robotics, and stationary power – Be a part of the climate solution! To learn more, download our brochure. Check out these videos to learn more about PLUG: Plug Power's Culture Code Who is Plug? Manufacturing Electrolyzers at scale Megawatt Fuel Cell Power Generation System Implementing Fuel Cells in Material Handling

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