Senior Mechanical Engineer, Hardware - Scale & Reliability

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

Job summary

Bellwether Coffee in Berkeley, CA is seeking a Senior Mechanical Engineer to lead mechanical design efforts for critical subsystems, balancing customer experience with scalable manufacturing.

You will collaborate with Engineering, Operations, and Manufacturing to ensure performance, reliability, and cost-efficiency, while mentoring teammates and supporting production readiness. This role requires on-site presence at our Berkeley HQ.

Qualifications

• Experience taking products from design through manufacturing at scale.
• Strong fundamentals in statics, dynamics, thermodynamics, heat transfer, and fluid mechanics.

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 requirements.
• Create detailed CAD models, assemblies, and drawings with GD&T annotations.
• Design components for manufacturability, cost efficiency, scalability, and serviceability (DFM/DFA).
• Build and test prototypes to validate function and reliability.
• Develop engineering requirements, test plans, and documentation for product development and validation.
• Lead design reviews and coordinate with cross-functional teams.
• Collaborate with suppliers and manufacturing to ensure quality and on-time delivery.
• Identify opportunities for product improvement and cost reduction.
• Mentor junior engineers and provide technical guidance.

Skills

Mechanical design

CAD proficiency

cross-functional collaboration

Prototyping & testing

DFM/DFA

Self-starter

Education

Bachelor’s degree in Mechanical Engineering

Tools

OnShape

PDM/PLM

Job description

Bellwether Coffee in Berkeley, CA is seeking a Senior Mechanical Engineer to lead mechanical design efforts for critical subsystems, balancing customer experience with scalable manufacturing.

You will collaborate with Engineering, Operations, and Manufacturing to ensure performance, reliability, and cost-efficiency, while mentoring teammates and supporting production readiness. This role requires on-site presence at our Berkeley HQ.