Senior Design Engineer

About Bessium:

Bessium Energy and Solutions is a pioneering energy storage company dedicated to designing and assembling advanced lithium-ion battery modules for applications in BESS (Battery Energy Storage Systems), Telecom, EV, UPS, and hybrid power systems. We are committed to innovation, reliability, and sustainability through cutting-edge technology made in India.

Role Overview:

We are looking for a passionate Design Engineer with experience in mechanical and/or electrical design of lithium-ion battery packs and modules with experience in ESS/BESS and exposure in EV's. You will be responsible for translating technical requirements into robust, manufacturable designs and play a key role in developing safe, high-performance energy storage products.

Key Responsibilities:

• Design mechanical enclosures, module casings, busbars, and harness layouts for lithium-ion battery packs.
• Create 2D/3D CAD models and detailed drawings using tools like SolidWorks, AutoCAD, or similar software.
• Collaborate with R&D and production teams to ensure design-for-manufacturability (DFM) and ease of assembly.
• Develop wiring diagrams, cell arrangements, and structural layouts ensuring thermal and electrical safety.
• Integrate design inputs from BMS, cooling systems, safety standards, and certification requirements (UN38.3, AIS, IEC).
• Conduct tolerance analysis, material selection, and thermal/structural validation in coordination with simulation team.
• Support prototyping, validation testing, and iterate designs based on test feedback and production learnings.
• Maintain BOMs and coordinate with supply chain for component specifications and vendor interactions.

Qualifications:

• Education: B.E./B.Tech in Mechanical, Electrical, or Mechatronics Engineering. Postgraduate degree is a plus.
• Experience: 4-5 years of experience in BESS/ESS design or closely related electro-mechanical systems, with exposure to EV's
• Technical Skills:
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• Proficiency in CAD tools (SolidWorks, Creo, AutoCAD, etc.).
• Understanding of battery module design, cell layout strategies (LFP), thermal management, and safety compliance.
• Familiarity with GD&T, FEA basics, and sheet metal/plastic part design.
• Soft Skills:
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• Detail-oriented with strong problem-solving skills.
• Ability to coordinate with cross-functional teams and meet tight project timelines.
• Good documentation and communication skills.

Preferred:

• Experience working with LFP cell suppliers (BYD, CATL, EVE, etc.).
• Exposure to design validation through FEA/thermal simulation tools.
• Understanding of electrical schematics, PCB layouts, and BMS integration (for hybrid roles).

Why Bessium?

• Build innovative products that power the energy transition.
• Be part of a young, dynamic team driving India’s battery revolution.
• Opportunity to work across multiple domains (EV, grid storage, hybrid systems).
• Growth, ownership, and learning in a fast-paced environment.

To Apply:

Send your resume and portfolio (designs) to reachus@bessium.com with subject: Application – Design Engineer