Senior Mechanical Design Engineer

3one4 Capital; India; On-site; INR 900,000 - 1,300,000; Full time

Job summary

Exponent is seeking an experienced Mechanical Design Engineer in India to develop sheet metal components and optimize packaging for the e^pump and e^pack family. You will drive structural and thermal designs that are efficient, cost‑effective, and manufacturable while meeting safety and performance requirements.

You will collaborate with cross‑functional teams to design components for weight, volume, and heat transfer, perform calculations, and validate through tests and analyses to ensure

Qualifications

• 5+ years of mechanical design experience in product development.
• Strong background in structural and thermal performance.
• Experience with electro-mechanical packaging and manufacturability.

Responsibilities

• Design for weight, volume, thermal performance, and IP sealing while ensuring serviceability and manufacturability (DFM/DFA).
• Perform conceptual designs, theoretical calculations, and tolerance stack analyses.
• Develop and execute test plans to validate subsystems and full product performance.
• Conduct root cause analyses (RCAs) for issues during testing and field deployment.
• Collaborate with manufacturers, assembly teams, and mold designers to refine designs based on feedback.
• Document the product development cycle from concept to production stabilization (FMEA, DFX, DVP, inspection plans, etc.).

Skills

Structural design

Thermal design

Packaging design

IP sealing

DFM/DFA

Job description

You’ll be working with the Engineering team.

This team runs on coffee with an infectious passion to build products that have never been built before. Our Flexible Energy Stack consists of the e^pack (battery pack) and e^pump (charging station), which together unlock 15-minute rapid charging.

Our philosophy: Break. Believe. Build

Break stuff. Break assumptions. Break the thumb rule.
Believe in the team. Believe in the process. Believe through failures.
Build fast. Build passionately. Build to simplify.

Role Description

We are looking for an experienced Mechanical Design Engineer with 5+ years' to develop sheet metal components (e.g., enclosures, electrical panels) and optimize packaging for the e^pump. You will drive structural and thermal designs that are efficient, cost-effective, and manufacturable while meeting safety and performance requirements.

Responsibilities:

• Designing for weight, volume, thermal performance, and IP sealing while ensuring serviceability and manufacturability (DFM/DFA).
• Performing conceptual designs, theoretical calculations, and tolerance stack analyses.
• Developing and executing test plans to validate subsystems and full product performance.
• Conducting root cause analyses (RCAs) for issues during testing and field deployment.
• Collaborating with manufacturers, assembly teams, and mold designers to refine designs based on feedback.
• Documenting the product development cycle from concept to production stabilization (FMEA, DFX, DVP, inspection plans, etc.).

What You Bring:

• Expertise in structural design, thermal systems, and electro-mechanical packaging.
• Strong understanding of fluid systems, heat transfer (conductive/convective), and refrigeration basics.
• Hands-on experience with mechanical assembly, IP sealing, and optimizing packaging for cost and performance.
• Solid knowledge of materials (Metals, Plastics, Composites, Elastomers) and their applications.
• Proven experience in taking a product from concept to production, backed by strong mathematical and analytical skills.

What matters:

• Quality of work
• Approach towards problem-solving
• Dissatisfaction towards mediocre work
• Resilient attitude to bounce back after failing

About Us

Exponent simplifies energy for EVs.

Co-founded by Arun Vinayak (Ather Energy's Founding Partner & Former Chief Product Officer) and Sanjay Byalal (Former hardware strategic sourcing and cell strategy lead, Ather and Former Supply Chain Lead, HUL), Exponent focuses on solving two sides of the energy problem by building the e^pump (charging station) and e^pack (battery pack) which together unlock 15-min rapid charging.

The 200+ strong team of passionate builders have a ton of EV experience and are currently looking for more builders to join one of the best EV teams in India to build & scale Exponent.