Today, Lonza is a global leader in life sciences operating across five continents. While we work in science, there’s no magic formula to how we do it. Our greatest scientific solution is talented people working together, devising ideas that help businesses to help people. In exchange, we let our people own their careers. Their ideas, big and small, genuinely improve the world. And that’s the kind of work we want to be part of.
As a Biotechnologist (Upstream) at Lonza Mammalian business, you’ll be part of our globally recognized network, driving the production of mammalian cell culture and treatments. You will support upstream operations including cell culture handling, bioreactor operations, and process control, while ensuring adherence to cGMP standards.
Join our best-in-class high-performance Integrated Biologics team at our Tuas site in Singapore to gain unparalleled exposure to cutting-edge biotechnology and innovation. Learn new skills and capabilities, grow your career with us in manufacturing therapeutic proteins under cGMP conditions, and make a difference from day one.

• Support upstream GMP manufacturing operations including subculture stages (culture flasks, spinners, wave bioreactors, etc.).
• Apply aseptic techniques and ensure microbial control throughout upstream operations.
• Operate bioreactors at small and large scale, including pH/DO, CO₂/O₂ control, cell performance monitoring, and metabolite analysis.
• Handle single-use applications for upstream processes.
• Support cleaning and sterilization cycles, ensuring equipment readiness and compliance with microbial control standards.
• Maintain facility and lab standards in a cleanroom environment, including 6S housekeeping.
• Complete required process documentation including SOPs, logbooks, and batch records.
• Perform duties in a rotating 12-hour shift pattern.