Senior Mechanical Systems Engineer — On‑Site (Needham, MA)

Big Belly Solar LLC; Boston (MA); On-site; USD 120,000 - 170,000; Full time

Job summary

Big Belly Solar LLC in Boston, MA, seeks a Senior Mechanical Development Engineer to lead development and sustaining efforts for new products combining sheet metal, plastics, electronics, and batteries. You will build and test validation samples and collaborate with global manufacturing, contract manufacturers, and suppliers to deliver high-quality systems.

The role emphasizes hands-on prototyping, root-cause analysis, and delivering robust solutions that impact performance and cost.

Qualifications

• Proficiency with SolidWorks 3D CAD design software.
• Proficiency with PDM/PLM tools (SolidWorks and Arena preferred).
• Proficiency with Microsoft Office software (Word, Excel, and PowerPoint).
• Proficiency with common shop tools and mechanical assembly techniques.
• Proficiency building prototypes to evaluate and test design concepts.
• Good problem-solving skills (statistical experiment design experience preferred).
• Excellent communication and collaboration skills.
• Ability to be on-site at headquarters in Needham, MA, full-time.
• 7+ years of experience developing systems products.

Responsibilities

• Develop production-ready engineering solutions for new products that have completed advanced development explorations.
• Technical lead for new product start-of-production.
• Contribute innovative ideas and solutions to drive performance advantages in Bigbelly products.
• Understand how engineering decisions during development impact the Bigbelly business.
• Triage field issues, determine root cause, and implement solutions.
• Support the Bigbelly Supply Chain Team with vendor selection/qualification, part validation, and cost estimating.
• Support the certification of our products for global distribution.
• Be a supporting technical resource for the Account Management and Customer Support teams.

Skills

Problem-solving

Communication skills

Teamwork

Attention to detail

Analytical thinking

Education

Bachelor's degree in Mechanical Engineering

Master's degree preferred

Tools

SolidWorks

PDM/PLM tools (Arena preferred)

MS Office (Word/Excel/PowerPoint)

Prototyping tools and shop equipment

Job description

Big Belly Solar LLC in Boston, MA, seeks a Senior Mechanical Development Engineer to lead development and sustaining efforts for new products combining sheet metal, plastics, electronics, and batteries. You will build and test validation samples and collaborate with global manufacturing, contract manufacturers, and suppliers to deliver high-quality systems.

The role emphasizes hands-on prototyping, root-cause analysis, and delivering robust solutions that impact performance and cost.