Bioreactor Technician / Mech Engineer (Immediate Start)

We're Hiring: Bioreactor Technician / Mech Engineer (Immediate Start) Location: Portugal (Lisbon / Nazaré)  «Chainreactor is building modular, scalable bioreactors to power the next generation of biomanufacturing — from cultivated meat to advanced biomaterials. We combine hardware, software, and biology into an accessible platform for growing the future.We’re looking for a hands-on builder to help assemble, prototype, and refine our bioreactor systems—experience with bioreactors is a bonus. What you’ll do: • Assemble and iterate on mechanical + electronic components • Work with CAD models (Fusion 360 / SolidWorks / etc.) • Prototype using 3D printing, machining, and basic fabrication tools • Wire and test sensors, pumps, valves, microcontrollers (Arduino / ESP32 / Duet / etc.) • Help document builds and improve our hardware workflowsWhy join us: • Work at the frontier of biomanufacturing • Real responsibility and visible impact from day one • Small team, fast pace, no bureaucracy • Flexible contract or internship options depending on experienceInterested? Send a short intro + examples of things you’ve built (photos/GitHub/CAD files all welcome) to: 👉 david@chainreactor.bio