Junior Mechanical Engineer

About Erthos

(www.erthos.com)

Erthos is an energy technology company dedicated to providing the world’s lowest-cost green energy. Creator of Earth Mount Solar™ PV, a revolutionary approach to utility-scale solar that dramatically reduces land and material requirements, Erthos has also developed highly innovative breakthrough technologies, as yet unannounced, that promise to change the way entire industries make and use clean fuel.

Erthos has adopted a highly focused, yet flexible strategy to introduce our products and services to markets around the world, beginning with the US. Our success relies on hiring the best and brightest people for every role in the company, and then collectively focusing them on our mission to deliver the world’s lowest-cost clean energy to everyone on the planet.

For more information on Erthos — including leadership profiles, white papers, news articles, and details about how our technology works — visit the company website at

www.erthos.com .

Position Summary

Erthos is seeking a Junior Mechanical Engineer to join our Research & Development team in our Chandler, Arizona R&D facility. This full-time position offers an exciting opportunity to work on the cutting edge of utility-scale solar innovation, developing products that include novel mechanical systems for solar installations, autonomous cleaning robots, and associated systems. The ideal candidate is a hands-on, inventive engineer with a passion for value engineering and a desire to contribute to transformative green energy solutions.

Please note that this is a full-time, in-office position. As this role is critical in the physical design of our robotic and solar systems, candidates will need to reside within a reasonable driving distance from Chandler, Arizona and be physically in the R&D facility each day. Successful collaboration in this extremely hands-on environment requires a consistent physical presence with your team.

Key Responsibilities

- Mechanical Design & Development – Lead the end-to-end design of novel mechanical systems, from concept sketches to production-ready models, ensuring compliance with performance, safety, and industry standards.

- Prototyping & Testing – Build and refine prototypes, conducting detailed lab tests to validate durability, reliability, and efficiency in real-world operating conditions.

- Structural Analysis – Apply Finite Element Analysis (FEA) and other modeling techniques to optimize structural integrity and performance while minimizing cost and complexity.

- Value Engineering – Focus on reducing cost and complexity while maintaining or enhancing product performance.

- Cross-Functional Collaboration – Work closely with electrical engineers, software developers, manufacturing teams, and project managers to integrate mechanical designs into complete system solutions.

- Field Support & Feedback – Occasionally travel to installation sites to oversee implementation, troubleshoot issues, and collect insights for future product improvements.

Desired Education and Experience

- Bachelor’s degree in Mechanical Engineering or a related field (master’s degree preferred).

- 3+ years of professional experience in mechanical product development, preferably in outdoor, industrial, or renewable energy applications.

Qualifications

- Strong understanding of mechanical design principles.

- Proficiency in SolidWorks and SolidWorks Simulation.

- Familiarity with industry trends and design for manufacturability and assembly (DFMA).

- Knowledge of Geometric Dimensioning and Tolerance Analysis (GD&T) and the related standards.

- Demonstrated experience with hands-on lab testing and iterative prototyping.

- Familiarity with the use of and capabilities of rapid prototyping equipment (CNC, 3D printing, waterjet, laser cutter, etc.).

- Experience collaborating with manufacturing vendors to optimize designs for manufacturability, cost, and performance.

- Exceptional communication skills and ability to work collaboratively across teams.

- Strong analytical skills and problem-solving abilities.

- Written and verbal proficiency in English.

Bonus Points For:

- Prior experience with mobile robotics.

- Experience in solar, renewable energy, or large-scale outdoor equipment.

- Multidisciplinary physics/engineering knowledge (e.g., control systems, thermal analysis, materials science).

- Experience with mold design, sheet metal fabrication, and welding design

Compensation and Benefits

- Our base salary will be commensurate with your level of engineering experience. We are targeting a base salary of approximately $90,000 - $110,000.

- Erthos pays 90% of all medical, dental and vision insurance premiums for its employees and their spouse and children.

- Stock options granted to all employees.

- Annual bonus potential.

- Flexible Paid Time Off (PTO).

- 401(K)