He spent his first postdoctoral studies from 1976 to 1979 at the Immunoparasitology Laboratory at the Walter & Eliza Hall Institute in Melbourne, with frequent visits and collaborative work on sialic acids at the Biochemisches Institut at Christian Albrechts Universitat in Kiel, Germany. He started working as a Research Associate in the Malaria Section of the
National Institutes of Health in Bethesda, Maryland before earning his tenure in the same institution in 1987. From 1988 to 1992, he worked at the Laboratory of Infectious Diseases of the DNAX Research Institute of Molecular and Cellular Biology in Palo Alto, California, USA, with dual roles, studying cytokine genes for Schering Plough, the parent organisation of DNAX Research Institute, and leading his Infectious Diseases laboratory there on malaria work funded by DNAX and USAID. In 1994, he was named President and Scientific Director of Affymax, Inc. where he managed teams working on small molecule drug lead discovery using combinatorial chemistry and high throughput target screening. His independent malaria work continued at Affymax with support from USAID and Affymax, leading to cloning of the PfEMP1 gene while at Affymax. After Affymax was purchased by
GlaxoWellcome, Howard led technology transfer and interchange in
combinatorial chemistry, drug discovery and optimisation between Affymax and GlaxoWellcome worldwide. During this time,
Molecular breeding or
DNA shuffling Technology was conceived and the nascent company Maxygen Inc. incubated for later spun out from Affymax-GlaxoWellcome. From 1997 to 2009, Howard worked as Maxygen's CEO, focusing on human, including, protein pharmaceutical drugs and vaccine discovery, as core business. Non-core businesses were successively incubated, nurtured and spun-out (Codexis) or sold (Verdia). In 2008, he left Maxygen with $200MM in cash, no debt, on-going clinical stage drug development programs and multiple partnerships and licenses with other parties. Following his departure, Howard started Oakbio, Inc., doing business as NovoNutrients Inc, a privately held
Clean Technology company in Sunnyvale, California, USA. NovoNutrients captures CO2 from industrial waste gas streams and uses microbial
chemosynthetic systems to capture and convert this carbon resource to protein-rich microbial biomass and valuable chemicals, sequestering a
Green House Gas from accumulation in the atmosphere. In 2012 Howard moved residency from Silicon Valley, California, where he had worked for 25 years, to Sydney, Australia. From Sydney, Howard acts as Executive Chairman of NeuClone, Non-Executive Chairman of Immutep and Chairman of NovoNutrients. == Financing leadership ==