Cartridge Development Engineer

DropLab is a multidisciplinary company focused on development on microfluidics systems, based in Toronto offering full-spectrum solutions: cartridge design, system design (mechanical + microelectronics), industrial design, rapid prototyping and manufacturing.

Our work bridges biology, mechanical engineering, electronics, firmware and manufacturing — providing an ideal environment for hands-on engineers who like to build, iterate and scale.

About the Role

We're looking for a hands-on Cartridge Development Engineer
to join our diagnostics team. You'll help design, prototype and scale microfluidic cartridges for diagnostic/assay applications — working at the intersection of microfluidics, electronics and assay integration. You'll translate experimental designs into manufacturable devices.

What You'll Do

• Design and prototype
  microfluidic cartridges
  for diagnostic assays, working through concept → CAD → prototype → benchtop test.
• Use
  CAD
  for modelling cartridge geometries and assemblies.
• Build, test and iterate prototypes — using 3D printing, laser cutting, machining, bonding.
• Collaborate with assay scientists to ensure cartridge designs align with reagent workflows — familiarity with biochemistry (reagents, surface interactions) is a plus.
• Work on
  design-for-manufacture (DfM) and design-for-assembly (DfA)
  : help transfer prototypes into scalable manufacturing (injection moulding, bonding, assembly).
• Engage in problem-solving, root-cause analysis, iteration cycles and cross-disciplinary teamwork.

What We're Looking For

• BS or MS in Mechanical, Biomedical, Bioengineering or equivalent.
• 3+ years hands-on experience in microfluidic or diagnostic system development (cartridges, fluidic modules).
• Strong CAD skills (Fusion 360 or equivalent).
• Experience with CFD simulations of microfluidic flows.
• Comfortable prototyping: 3D printing, machining, bonding, fluidic testing.
• Some experience or strong interest in electronics/system integration is a great asset.
• Ability to collaborate across biology (assays), mechanics (cartridge), electronics (sensors/controllers).
• Resourceful, detail-oriented, thrive in fast-paced hands-on R&D environment.

Nice to Have

• Background in biochemistry or assay development — understanding reagent behaviour, surface chemistry, or biological workflows.
• Previous experience transferring prototypes into manufacturable products (injection moulding, tooling, assembly lines).
• Experience with polymer materials, adhesives, membranes, and fluidic component fabrication.
• Understanding of electronics/hardware integration (e.g., sensors, microcontrollers) in a fluidic system.

Why You'll Love Working Here

• Opportunity to work at the cutting-edge of diagnostics and microfluidics — where mechanical, electronic, fluidic and biological components converge.
• A team environment that values hands-on building, experimentation, iteration, and visible impact.
• Working for DropLab — where you'll be part of end-to-end design: from concept through prototype to scale-up manufacturing.
• Flexible, dynamic, and collaborative culture.
• Excellent group benefits and competitive compensation package.