In 1998 Kubista founded LightUp Technologies AB after his research finding of lightUp probes, a company that specializes in the development of real-time PCR tests for human infectious diseases. Three years later In 2001, Kubista's research led to the establishments of MultiD Analyses AB, which develops GenEx software for gene expression data analysis and TATAA Biocenter for qPCR and gene expression analysis. The company became known for its qPCR training services globally and its provision of qPCR services, particularly in Europe. TATAA Biocenter was the first laboratory in Europe to obtain flexible ISO 17025 accreditation and also was the first to provide COVID tests at the onset of the pandemic.  In 2014 Kubista implementated  non-invasive prenatal testing (NIPT) in Sweden and subsequently founded Life Genomics AB. In 2020, Kubista co-founded SimSen Diagnostics, a company focused on developing technology for liquid biopsy analyses.