Technical Sr. Engineer

Job Description:

Job Title: Senior Mechanical Engineer – Product Design & Development
Department: Power Electronics – Renewable Energy
Location: [Sorocaba]
Job Type: Full-Time
Experience Level: Senior (8+ years)

Position Overview:

We are looking for a Senior Mechanical Engineer with deep expertise in product design and development to join our Power Electronics team focused on renewable energy solutions. You will collaborate closely with cross-functional teams, including electrical, thermal, manufacturing, and industrial design to deliver high-performance, manufacturable, and reliable products.

This role requires strong technical capabilities in CAD design, thermal and structural analysis, and a solid understanding of manufacturing processes—particularly for electronics enclosures and systems exposed to harsh environmental conditions.

Key Responsibilities:

• Lead the mechanical design of renewable energy power electronics products from concept to mass production.
• Develop 3D models and 2D drawings using tools like SolidWorks, with full application of GD&T.
• Perform thermal and structural FEA simulations to ensure mechanical reliability under environmental stress.
• Design for manufacturability using plastic injection molding, sheet metal, die casting, and other high-volume production methods.
• Integrate thermal management solutions for high-power density systems (e.g., heatsinks, airflow, phase-change materials).
• Collaborate closely with electrical, thermal, manufacturing, and testing teams to ensure design feasibility and product robustness.
• Manage design reviews, risk assessments (e.g., FMEA), and compliance with environmental standards (e.g., IP ratings, UL, IEC).
• Support prototype builds, testing, root cause analysis, and continuous design improvement.

Required Qualifications:

• Bachelor's or Master's degree in Mechanical Engineering or a related field.
• 8+ years of mechanical design experience, ideally in renewable energy, power electronics, or energy storage products.
• Proficient in CAD modeling and drawing creation with a deep understanding of GD&T and tolerance analysis.
• Demonstrated ability to perform structural and thermal analysis using FEA tools (e.g., ANSYS).
• Hands-on experience designing for manufacturing across multiple processes—plastic, metal, and composite components.
• Strong grasp of DFM/DFA principles and experience working with suppliers and contract manufacturers.
• Excellent cross-functional communication skills with a proactive, problem-solving mindset.

Preferred Qualifications:

• Experience designing enclosures for outdoor, high-voltage, or grid-connected equipment.
• Knowledge of thermal management techniques for power electronics in solar, wind, or energy storage applications.
• Familiarity with environmental compliance standards (e.g., IP65/IP67, UL 1741, IEC
• Exposure to reliability testing, accelerated life testing, or harsh environment validation (e.g., salt fog, vibration, thermal cycling).
• Familiarity with high-volume manufacturing and global supplier collaboration.

Why Join Us:

• Contribute to a sustainable future through impactful renewable energy technologies.
• Join a passionate and innovative engineering team working on clean energy solutions.
• Competitive salary, benefits, and opportunities for career growth in a mission-driven company.

At Nextracker, we are leading in the energy transition, providing the most comprehensive portfolio of intelligent solar tracker and software solutions for solar power plants, as well as strategic services to capture the full value of solar power plants for our customers. Our talented worldwide teams are transforming PV plant performance every day with smart technology, data monitoring and analysis services.

For us at Nextracker, sustainability is not just a word. It's a core part of our business, values and our operations. Our sustainability efforts are based on five cornerstones: People, Community, Environment, Innovation, and Integrity. We are creative, collaborative and passionate problem-solvers from diverse backgrounds, driven by our shared mission to provide smart solar and software solutions for our customers and to mitigate climate change for future generations.