Prototype Engineer

Location: Bengaluru, India

Department: Battery

Experience: 2 - 5 Years

Job Purpose (Significance of the role & Objectives)

As a Battery Prototype Engineer at Pravaig, you will play a critical role in developing Proof of Concepts (PoCs), functional prototypes, and pilot battery packs that closely resemble production-ready designs. You will work across mechanical and electrical domains to bridge the gap between R&D and production by bringing early-stage battery concepts to life in a structured, high-quality manner.

Key Responsibilities and Deliverables

• Build PoC, functional prototypes, and pilot lots of Li-ion battery packs according to engineering documentation and production intent.
• Interpret and execute mechanical and electrical designs, including wiring layouts, component placements, and mechanical assemblies.
• Work from design documentation, schematics, and BOMs to assemble prototypes and ensure adherence to DFM (Design for Manufacturing), DFA (Design for Assembly), and DFS (Design for Serviceability) principles.
• Collaborate with cross-functional teams (design, thermal, BMS, supply chain) to integrate feedback and support rapid iteration.
• Apply knowledge of QC tools, DFMEA, process flow charts, and SOPs to support validation and design integrity throughout the build cycle.
• Operate tools such as torque wrenches, crimpers, spot welders, grinders, and hand/power tools with precision and safety.
• Understand high-voltage architecture, battery sub-systems, and electrical safety protocols for HV components and systems.
• Contribute to improving manufacturing feasibility by identifying design challenges during proto and pilot builds.
• Record accurate data on material usage, part issues, and design deviations and relay clear feedback to the R&D and design teams.
• Coordinate with procurement and vendors for prototype part sourcing, clarification, and on-time readiness of materials.

Desired Qualifications: Required Qualification, Knowledge, and Experience

• 2–5 years of experience in battery pack prototyping (preferably in EV).
• Working knowledge of CAD tools, Microsoft Office, and reading mechanical drawings and wiring schematics.
• Understanding of battery assembly processes, sheet metal fabrication, welding techniques, and electrical layout standards.
• Comfortable multitasking between activities such as mechanical builds, electrical connections, documentation, and part coordination.
• Excellent verbal and written communication skills to document build processes and feedback clearly.

Key Competencies

• Result-oriented/Goal driven. 
• Proficiency in oral and written communication. 
• Self-motivated, passionate about learning, and takes initiative with a problem-solving attitude. 
• Highest level of integrity (teamwork, confidentiality, ethics, and integrity are the prerequisites for the role). 
• Sense of ownership and pride in his/her performance and its impact on the company’s success.