Senior Mechanical Engineer - Consumables

Join the Future of Robotic Biomanufacturing!

Multiply Labs is a robotics company on a mission to solve a significant bottleneck in modern medicine: the manufacturing of life-saving advanced biologics - including cell therapies, gene therapies, mRNA therapies, and more.

Currently, advanced biological therapies are produced through manual, labor-intensive processes. This keeps costs astronomical—often exceeding $0.5M-$2M per patient—and limits access to only a fraction of those in need. 

As labor scarcity for scientists compound against increased product complexity and sky-high costs of failure, the emergence of robotics and AI makes the automated manufacturing of biologics feasible, reliable, and economically scalable. 

We envision that the biomanufacturing factory of the future is fully robotic - closed, automated, and scalable, making therapeutics for some of the most important indications for patients today widely accessible.  

Why This Matters

We don’t just build robots; we build the infrastructure for the next generation of biologics manufacturing. Our technology allows biopharma companies to scale production without redesigning their science, drastically lowering regulatory hurdles and bringing costs down to a level where these treatments can actually reach patients.

The Stack & The Scale

The Mission: Build the world’s best robots to make life-saving therapies accessible to all.

The Technology: Advanced robotic orchestration, high-precision automation, cloud-integrated hardware-software systems, dextrous manipulation, and imitation learning.

The Location: Headquartered in San Francisco, CA.

The Backing: Supported by premier investors, including Casdin Capital, Lux Capital, and Y Combinator.

About the Role

As a Senior Mechanical Engineer in the Multiply Labs team, you will apply your engineering expertise and technical leadership skills to design consumable components for complex automated machinery involved in the manufacturing of novel pharmaceutical products. This includes the design of robotic cartridges and adapters that enable robotic interfacing with commonly used consumables in cell therapy manufacturing (fluid transfer bags, bioreactors, cell isolators, reagent vials, etc). You’ll be working directly with a cross functional hardware and software team on designing and building the current and next generations of Multiply Labs’ robotic systems. This ranges across designing and selecting components for our robotic system, determining high level design goals and objectives, building prototypes and taking them to production. You’ll succeed in the role if you can iterate and optimize design using first principle engineering approaches. We have a mix of exciting projects running simultaneously in various phases of maturity. You will need great documentation skills and ability to organize thoughts and ideas into actions in order to drive decision making conversations on major projects while coordinating with colleagues.

Responsibilities

• High level ownership of robotic consumable assembly design including:
• Leading concept ideation phases using first principles knowledge
• Detailed design work in CAD, including modeling and creation of detailed drawings
• Investigation of applicable technologies and off-the-shelf components
• Analysis of designs including loads, tolerance stack ups, manufacturability, and material compatibility with bioprocess, sterilization, and cleaning.
• Prototyping, material selection, testing, and iterating designs
• Close collaboration with Biology, Product, and Robotic Software teams to ensure your designs meet requirements for the bioprocess and the robotic system
• Generation of supporting design documentation and manufacturing instructions
• Oversight in a transition to production manufacturing for completed design
• Lead technicians in pilot builds of your consumable prototypes in our in-house clean room to test designs in robotic cell runs
• Responsibilities may also include some machine and robot end effector design.

Qualifications

• Extensive mechanical design experience developing bioprocess consumables and/or medical devices from concept to production, including starting from a ‘blank sheet’.
• Proven ability to solve complex technical problems by breaking them down into simpler pieces and executable tasks. 
• Extensive knowledge of mechanical components, common engineering metals, plastics, joining methods, part fabrication methods, and finishing operations. 
• Extensive experience optimizing manufacturability of high volume assemblies using DFM/DFA principles
• Experience transferring designs to external suppliers and contract manufacturers for production
• Extensive experience working in 3D CAD software
• Extensive experience with injection molded part design
• Working knowledge of GD&T standards
• Bachelors of Science in Mechanical Engineering or related field
• 5+ years engineering experience in a relevant/similar field

Nice to Haves

• Experience working in FDA and/or EMA regulated industries
• Familiarity with medical/biopharma material selection for sterile, single-use assemblies
• Onshape experience
• Hands on experience with machine shop and prototyping tools

Total Rewards & Life at Multiply Labs

• Competitive Compensation: Salary range of $140,000 - $165,000 a year plus meaningful early-stage equity. We want our team to have a real stake in the future we’re building.
• Premium Health: Premium Medical, Dental, and Vision plans with subsidies for child dependents.
• Wealth Building: 401(k) with a 4% company match to help you plan for the long term.
• Pre-Tax Commuter Benefit: Pay for eligible transit and parking with pre-tax dollars to save on commuting costs.
• Parental Support: Robust Paid Parental Leave to support your family’s newest additions.
• True Flexibility: We offer Flexible PTO and 12 Paid Holidays, trusting you to manage your time and recharge when you need it.
• No Set Hours: Set your own schedule in alignment with your manager and team. We hold a high bar, measuring success by impact and outcomes – not hours logged.
• Office Perks: A vibrant SF office culture featuring catered team lunches, stocked kitchen, and frequent team events.
• H-1B and Green Card sponsorship available for exceptional talent.
• Referral bonuses for helping us build a world-class team.
• Great people, meaningful work, and a team that genuinely believes in what we're building.

Come build the world’s best robots—and help make life-saving therapies accessible to all.

USD 140,000 - 165,000 a year

We actively seek candidates with diverse perspectives and lived experiences. We’re committed to building a team where everyone feels valued, respected, and empowered to do their best work.

Multiply Labs encourages candidates from all backgrounds to apply — even if you don’t meet every qualification. If you’re excited about our mission and think you can contribute, we’d love to hear from you.

Our headquarters is located in San Francisco’s vibrant Dogpatch neighborhood. Some roles may require 5-10% of domestic and international travel.