Viral Vector Specialist

The specialist prepares continuous and discontinuous density gradients using cesium chloride CsCl or iodixanol gradients, operating preparative floor model ultracentrifuges spinning titanium rotors at speeds exceeding fifty thousand revolutions per minute and generating centrifugal forces above two hundred thousand times gravity. Following guidelines established by the European Medicines Agency EMA and FDA Cellular, Tissue, and Gene Therapies Advisory Committee, the specialist resolves the delicate buoyant density differences between full viral capsids containing therapeutic DNA and empty capsids lacking genetic payloads.

While automated robotic fractionators can collect tube fractions, the physical execution of high speed ultracentrifugation requires meticulous manual technique and balance. Unbalanced rotor buckets spinning at hypervelocity can cause catastrophic mechanical failure and loss of irreplaceable clinical batches. The specialist performs precise gravimetric balancing to within one hundredth of a gram, punctures centrifuge tubes under sterile laminar flow hoods, identifies the light scattering capsid bands using fiber optic illumination, and verifies capsid fullness ratios using analytical ultracentrifugation AUC, transmission electron microscopy TEM, and droplet digital PCR ddPCR.

The morning begins in the Biosafety Level 2 cleanroom suite by preparing discontinuous iodixanol gradients in thick walled polycarbonate ultracentrifuge tubes. Using a long stainless steel cannula, the specialist carefully underlays sixty percent, forty percent, twenty five percent, and fifteen percent iodixanol steps beneath fifteen milliliters of clarified adeno associated virus AAV9 harvest broth. They place the filled tubes into titanium swing buckets, balancing opposite pairs on an analytical balance to within five milligrams before sealing the titanium caps. The specialist loads the rotor into the ultracentrifuge chamber, initiates high vacuum pump down, and accelerates to sixty thousand RPM for a two hour run. After deceleration, they mount the tubes under a fiber optic beam, carefully aspirate the bluish opalescent band containing full viral capsids, and perform an immediate buffer exchange using a tangential flow filtration cassette.

In the afternoon, you execute core deliverables, consult with cross functional colleagues, document operational outcomes, and ensure that all equipment and handover notes are fully updated before completing the shift.

A Viral Vector Ultracentrifugation and Downstream Gene Therapy Specialist purifies, fractions, and characterizes recombinant adeno associated virus AAV, lentivirus, and retroviral vectors used in human gene therapies and cellular therapies. Operating within cleanroom suites of advanced therapy medicinal products ATMP facilities, specialized CDMOs, and translational gene therapy institutes, the specialist separates therapeutic transgene containing viral capsids from empty or partially packaged non therapeutic capsids.

Core responsibilities include prepare cesium chloride and iodixanol density gradients for viral vector separation under aseptic laminar flow conditions., operational coordination, and ensuring strict adherence to Kenyan statutory frameworks and quality standards.

Key organizations hiring for this role include Kenya Medical Research Institute KEMRI, Dawa Life Sciences, Cosmos Pharmaceuticals Limited, Bio Foods Kenya, alongside expanding opportunities in Nairobi, Mombasa, Kisumu, and regional infrastructure projects.

Viral Vector Specialist Specialist, Senior Viral Vector Specialist, Viral Vector Specialist Lead, Viral Vector Specialist Consultant

While automated robotic fractionators can collect tube fractions, the physical execution of high speed ultracentrifugation requires meticulous manual technique and balance. Unbalanced rotor buckets spinning at hypervelocity can cause catastrophic mechanical failure and loss of irreplaceable clinical batches. The specialist performs precise gravimetric balancing to within one hundredth of a gram, punctures centrifuge tubes under sterile laminar flow hoods, identifies the light scattering capsid bands using fiber optic illumination, and verifies capsid fullness ratios using analytical ultracentrifugation AUC, transmission electron microscopy TEM, and droplet digital PCR ddPCR. Employment opportunities concentrate across major industrial, commercial, and financial hubs including Nairobi, Mombasa, Kisumu, Nakuru, and Eldoret, alongside specialized regional project sites.