Senior Mechanical Engineer — Lead Hardware Design & Manufacturing

Bellwether Coffee; Berkeley (CA); On-site; USD 140,000 - 180,000; Full time

Job summary

Bellwether Coffee, headquartered in Berkeley, CA, seeks a Senior Mechanical Engineer to lead mechanical subsystems from concept to manufacturing. You will work cross-functionally with hardware, operations, and manufacturing teams to ensure performance, reliability, and cost efficiency.

The role emphasizes manufacturability and scalability for consumer-ready products. The position requires on-site presence at Bellwether’s Berkeley HQ, with travel to Southeast Asia as needed.

Qualifications

• Experience taking products from design through manufacturing at scale, with a focus on customer experience.
• Bachelor’s degree in Mechanical Engineering (or equivalent) with fundamentals in statics, dynamics, thermodynamics, heat transfer, and fluid mechanics/dynamics.
• Experience with a range of manufacturing processes (sheet metal, CNC machining, plastics, welding, die-casting, etc.).
• Design for Manufacturing (DFM) and Design for Assembly (DFA) expertise.
• Prototyping and lab testing skills.

Responsibilities

• Lead the design and development of complex mechanical subsystems from concept through manufacturing.
• Define system architecture, component selection, and engineering tradeoffs to meet performance, reliability, and durability.
• Create CAD models, assemblies, and drawings with GD&T annotations.
• Design components and systems for manufacturability, cost efficiency, scalability, and serviceability (DFM/DFA).
• Build and test prototypes to validate function, reliability, and usability.
• Develop engineering requirements, test plans, and documentation for product development and validation.
• Lead and participate in design reviews (PDRs, CDRs, production readiness).
• Collaborate with suppliers, fabricators, and manufacturing to ensure quality and on-time delivery.
• Identify opportunities for product improvement, cost reduction, and manufacturing optimization.
• Collaborate cross-functionally with electrical, firmware, software, product, industrial design, operations, and supply chain teams.
• Troubleshoot complex hardware issues and provide robust engineering solutions.
• Provide technical guidance and mentorship to other engineers.
• Willingness to travel overseas (Southeast Asia).

Skills

End-to-end product design

Cross-functional collaboration

Leadership and mentoring

Problem solving

Strong fundamentals (statics, dynamics

Prototype/validation

Education

Bachelor’s degree in Mechanical Engineering

Tools

OnShape

PDM/PLM

Job description

Bellwether Coffee, headquartered in Berkeley, CA, seeks a Senior Mechanical Engineer to lead mechanical subsystems from concept to manufacturing. You will work cross-functionally with hardware, operations, and manufacturing teams to ensure performance, reliability, and cost efficiency.

The role emphasizes manufacturability and scalability for consumer-ready products. The position requires on-site presence at Bellwether’s Berkeley HQ, with travel to Southeast Asia as needed.