Sr. Product Design Engineer

Product Design Engineer - Mechanical
Location: Mumbai, Goregoan East
Type: Full-time
Experience: 4–8 years
The Role
Cosy is building modular indoor farms designed to grow fresh produce directly where it is consumed.
We’re looking for a Product Design Engineer who can take our current farm system and engineer its next generation - not simply make drawings.
You will own the mechanical evolution of the product from concept → CAD → prototype → testing → manufacturing → field feedback → redesign.
Your objective is straightforward but difficult:
Your mandate is to turn our current farm into a world-class, production-ready product - engineered for reliability, manufacturability, serviceability and scale, while achieving an aggressive cost structure suited to the Indian market.
The goal isn’t simply to make the product work. It’s to make it simpler, smarter, more robust and dramatically more cost-efficient with every iteration.
What You’ll Own
Mechanical architecture of Cosy’s farming units
3D modelling, assemblies and production drawings in SolidWorks
Design for manufacturing and assembly (DFM/DFA)
Sheet-metal, fabricated structures, plastics, insulation/enclosures and other manufacturing processes
Mechanical integration of HVAC/cooling, water systems, pumps, tanks, lighting and electronics
Material selection, tolerances, fits and component specification
Prototype development and engineering validation
Design testing, failure analysis and iterative improvement
BOM simplification and aggressive cost engineering
Designing for reliability, cleaning, maintenance and serviceability
Technical coordination with fabricators and component vendors
Reviewing manufactured components against engineering drawings and specifications
Supporting installations and field troubleshooting when engineering involvement is required
Maintaining organised CAD, drawings, revisions and engineering documentation
What Good Looks Like
You don’t just ask:
“Does it work?”
You ask:
Can it have fewer parts? Can it be cheaper? Can it assemble faster? Can a technician access it easily? What fails first? Can we manufacture it locally? Can we remove this component altogether?
Within your first year, we expect you to have materially improved Cosy’s farm across:
Cost ↓ | Part Count ↓ | Assembly Time ↓ | Failure Points ↓ | Service Time ↓
while improving:
Reliability ↑ | Manufacturability ↑ | Finish ↑ | Modularity ↑ | Product Quality ↑
Who We’re Looking For
B.E./B.Tech in Mechanical Engineering, Product Design, Manufacturing Engineering, Mechatronics or a closely related discipline
Approximately 4-8 years of hands-on product-development experience
Strong command of SolidWorks
Experience taking physical products from CAD into actual manufacturing
Strong understanding of fabrication and manufacturing processes
Experience developing prototypes and solving problems on the shop floor
Strong mechanical fundamentals and practical engineering judgement
Comfortable working directly with fabricators and suppliers
Evidence of having reduced cost or simplified an existing product
Comfortable working in a fast-moving environment where the product is still evolving
We Care More About This Than Your CV
Show us something you’ve actually built.
During the interview, we’d like to understand one physical product or assembly you’ve personally worked on:
What was the problem? What did you design? What manufacturing decisions did you make? What failed? What did you change? And how did the final product become better or cheaper because of your engineering?
We’re looking for someone who enjoys building real things.

Work arrangement
No