Lead - Mechanical Design Engineer

Description You’ll be working with the product and 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.

Break. Believe. Build. Break stuff, break assumptions, break the thumb rule. Believe in the team, the process, and through failures. Build fast, build passionately, build to simplify. Own it like you mean it.

Role Summary We are looking for an experienced Mechanical Design Engineer with 8+ years experience to own and deliver products that enable the flexible energy stack of Exponent. This includes but is not limited to - Low voltage batteries, charges and connectors, High voltage battery, chargers and connectors and vehicle integration kits.

Responsibilities

• Review all designs under your ownership prior to release and with context of the Exponent product development framework, considering design for weight, volume, thermal performance, IP sealing among other criteria while ensuring serviceability and manufacturability (DFM/DFA).
• Contribute actively towards project and program planning - including but not limited to budgets, resources, timelines, tooling etc.
• Reviewing 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 mechanical design domains - structural design, thermal systems, fluid systems and electro-mechanical packaging.
• Strong understanding of fluid systems, heat transfer (conductive/convective), and refrigeration / HVAC.
• 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
• Extremely high ownership and willing to get your hands dirty

Exponent is building the energy stack powering commercial EVs in India. Our proprietary battery and charging technology enables safe, reliable 15-minute rapid charging while delivering a 3,000-cycle battery life warranty using standard lithium-ion cells. Today, our platform powers high-utilisation commercial vehicles - from three-wheelers to intercity buses, making electric mobility rapid, more reliable and more affordable than petroleum. Founded by Arun Vinayak (Founding Partner & Former Chief Product Officer, Ather Energy), Exponent is a 250+ member team of passionate builders solving some of the toughest engineering challenges in energy. If solving hard engineering problems across mechanics, thermal systems, power electronics, manufacturing, and the charging network, while staying obsessed with customer experience excites you, we'd love to build with you.

Sourced from the fund's portfolio job board — apply on the company's site.