Mechanical Engineer II

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 on 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, pneuma c 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 onsite Service Technicians
• Write and execute test plans for system level component diagnostics and reliability improvements • Provide 2nd and 3rd er 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

Educa on 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 classification ) and ability to apply them in design, troubleshooting, and field modifications
• Ability to travel as needed to carry out du es of the position.
• Proficiency in analyzing engineering data and troubleshooting operational performance.
• Ability to read and interpret electrical schema cs, P&ID drawings, and other related project drawings.
• Superior communication skills.
• Ability to manage complex projects and multitask 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.