Sr. Mechanical Engineer

Posted Yesterday
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Valencia, Comunidad Valenciana, ESP
In-Office
Senior level
Energy • Renewable Energy
The Role
Designs mechanical architectures, enclosures, chassis, cooling systems, and support structures for inverters and electrical cabinets. Performs CFD thermal simulations and FEA structural analyses, selects materials, manages tolerances, and applies DFMA principles to ensure manufacturability, assembly, watertightness, safety, and regulatory compliance. Collaborates with electrical and software engineering teams and requires advanced CAD, manufacturing-process, and bilingual Spanish-English expertise.
Summary Generated by Built In

Job Description:


The Sr. Mechanical Engineer specializing in product design joins the R&D&I team to develop the physical architecture, chassis, and cooling systems for inverters and electrical cabinets to be manufactured. Their mission is to ensure the structural integrity of the equipment, optimize space (“packaging”), ensure proper heat dissipation for critical electronic components, and ensure compliance with applicable technical specifications and regulations.


Mission and Main Objective

•    Develop the three-dimensional mechanical design of the equipment, ensuring that it can be manufactured and assembled.

•    Efficiently manage the dissipation of heat generated by the electronics using advanced cooling systems.

•    Ensure compliance with environmental protection, vibration, and mechanical safety regulations for the product.


Key Functions

•    3D Modelling and Drawings: Design the enclosure, support structures, ventilation ducts, and busbar mounting systems.

•    Thermal Simulation (CFD): Perform computational fluid dynamics analyses to optimize heat sinks and cooling systems.

•    Structural Analysis (FEA): Validate the mechanical strength of the chassis against transportation stresses, earthquakes, impacts (IK ratings), and vibrations.

•    Material Selection: Determine the optimal materials (aluminium, steel, engineering plastics) by considering cost, weight, corrosion, and dielectric properties.

•    Tolerance Management and DFMA: Apply design-for-manufacturing-and-assembly (DFMA) methodologies to ensure the equipment’s watertightness (IP ratings).



Profile Requirements

•    Education: Bachelor’s degree in Mechanical Engineering. A master’s degree or specialization in Thermal Simulation or Product Development is highly desirable.

•    Experience: More than 8 years in mechanical design of capital goods, electrical cabinets, power electronics, or the automotive industry.

Fluency in Spanish and English, both written and spoken, is required.


Technical Skills:

  • Mechanical design of industrial electronic equipment.
  • Advanced proficiency in 3D CAD software (SolidWorks, CATIA, Inventor).
  • Actual experience with thermal and structural simulation tools (ANSYS Fluent, SolidWorks Simulation, Autodesk CFD) is desirable.
  • Knowledge of manufacturing processes (sheet metal, casting, plastic injection moulding, machining).

Soft Skills: Ability to work in multidisciplinary teams (with electrical and software engineers), attention to detail, and a focus on innovation.

At Nextpower, we are driving the global energy transition with an integrated clean energy technology platform that combines intelligent structural, electrical, and digital solutions for utility-scale power plants. Our comprehensive portfolio enables faster project delivery, higher performance, and greater reliability, helping our customers capture the full value of solar power. Our talented worldwide teams are redefining how solar power plants are designed, built, and operated every day with smart technology, data-driven insights, and advanced automation. Together, we’re building the foundation for the world’s next generation of clean energy infrastructure.

We are Nextpower

Skills Required

  • Bachelor's degree in Mechanical Engineering
  • More than 8 years of mechanical design experience in capital goods, electrical cabinets, power electronics, or automotive
  • Fluency in Spanish and English, written and spoken
  • Mechanical design experience with industrial electronic equipment
  • Advanced proficiency with 3D CAD software such as SolidWorks, CATIA, or Inventor
  • Experience with thermal and structural simulation tools
  • Knowledge of sheet metal, casting, plastic injection molding, and machining processes
  • Master's degree or specialization in Thermal Simulation or Product Development

Nextracker Compensation & Benefits Highlights

The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about Nextracker and has not been reviewed or approved by Nextracker.

  • Retirement Support — A 401(k) with company match is offered. The company stood up its own plan in 2023 alongside additional welfare benefits in early 2024.
  • Wellbeing & Lifestyle Benefits — Wellness offerings include yoga and meditation classes, onsite chair massages and bicycles, commuter/rideshare support, and EV charging at some locations. These extras supplement the core medical, dental, and vision coverage.
  • Parental & Family Support — Paid parental and family medical leave are included alongside PTO and paid holidays. This complements the broader U.S. benefits menu.

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The Company
HQ: Fremont, CA
1,107 Employees

What We Do

Since day one, Nextracker’s mission has been to transition the world to affordable, renewable power, by developing the highest-performing and resilient solar tracking technologies and software in the market for our customers. From sustainable tracker solutions that conform to uneven terrain and withstand extreme weather, Nextracker systems have resilience built in. Nextracker leads the solar industry with solar tracker technologies that optimize and increase energy production while reducing costs for significant plant ROI

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