Mechanical Engineer

Cellsense; New York (NY); On-site; USD 80,000 - 120,000; Full time

Benefits offered by this job

Health insurance

Equity

Job summary

Cellsense in Brooklyn, NY seeks a hands-on engineer to own production as we scale, taking systems from prototype to pilot plant and building the tools to meet growing demand from brand partners.

You’ll collaborate closely with the founder, develop and deploy Cellsense's next-generation production capabilities, and help drive meaningful environmental impact in a small team environment.

Qualifications

• Bachelor's degree in Mechanical/Manufacturing Engineering or related field.
• 3+ years of engineering experience taking projects from concept to completion.
• Hands-on experience designing, building, troubleshooting physical systems.

Responsibilities

• Design and iterate hardware to scale production.
• Build and optimize automated material deposition systems.
• Customize molds; source components and manage lead times.
• Collaborate across disciplines to develop new products.
• Own and develop engineering at Cellsense.

Skills

5+ years experience in engineering

Hands-on hardware design

3D CAD

Prototyping methods

Manufacturing/automation experience

Problem-solver in startup

Education

Bachelor's degree in Mechanical/Manufacturing Engineering

Tools

3D CAD software

Machining

3D printing

Laser cutting

Job description

Cellsense manufactures sustainable products for the fashion, jewelry, and beauty industries utilizing our proprietary material made from Algae and Cellulose. Cellsense aims to replace plastics and resins, and in doing so eliminate major sources of microplastics and heavy metal pollution. With our material, we can achieve a wide range of colors, clarities, forms, and even unique properties such as bio-fluorescence. Our novel manufacturing systems enable us to produce complex beaded textiles at scale, replacing overseas manual labor with highly automated domestic production. Currently, we are focused on scaling up our process while engaging in paid pilots with industry partners. You will join us at an exciting stage of our growth.

The Role

We're looking for a hands-on engineer to own production at Cellsense as we scale. You'll be responsible for taking our manufacturing systems from prototype to pilot plant, developing and implementing the necessary tools and processes to meet growing demand from our brand partners. As a key member of our small team, you'll collaborate closely with our founder and have a meaningful impact on the development and deployment of Cellsense's next-generation production capabilities.

Responsibilities

Design and iterate on hardware necessary for Cellsense to scale production

Build and optimize automated material deposition systems

Customize molds for diverse customer use cases. Source components and work with suppliers to manage parts and lead times

Work across disciplines to help develop exciting new products

Own and develop engineering at Cellsense

What We're Looking For

Bachelor's degree in Mechanical Engineering, Manufacturing Engineering, or a related field

3+ years of engineering experience, including taking projects from concept to completion

Hands-on experience designing, building, and troubleshooting physical systems

Proficiency in 3D CAD software of choice

Familiarity with prototyping methods such as machining, 3D printing, and laser cutting

Experience with manufacturing processes or automation is a strong plus

Strong organizational skills and attention to detail

Self-motivated problem-solver who thrives in a startup environment

What We Offer

Compensation range: $80000 - $120000 per year + equity

Health insurance

Direct ownership of production systems and processes

Opportunity to work on meaningful environmental impact as part of a tightly knit team

Job Type: Full-time, in-person

Location: Brooklyn, New York

Travel: 10-15% (domestic)

Ideal Start Date: February 2026