We are looking for a Software Engineer to join the Expression Atlas development team at the European Bioinformatics Institute (EMBL-EBI), located on the Wellcome Trust Genome Campus near Cambridge in the UK. EMBL-EBI is a world-leading bioinformatics centre providing biological data to the scientific community, with expertise in data storage, analysis and representation. Expression Atlas is a value added database servicing queries for gene expression patterns (e.g. genes over-expressed in a particular tissue or disease state) as well as broader exploratory searches for biologically interesting genes/samples. As our new Software Engineer you will be working on a project funded by the Centre for Therapeutic Target Validation (CTTV); a collaboration between EMBL-EBI, the Wellcome Trust Sanger Institute (WTSI) and GlaxoSmithKline (http://www.targetvalidation.org/). Expression Atlas is set to play an important role in this new public-private initiative which will generate evidence on the validity of therapeutic targets, and is committed to sharing its data openly with the scientific community. The successful candidate will play a crucial role in developing new user interfaces and data feeds to include the Expression Atlas tissue specificity of targets data within the CTTV web portal, and also allow users to explore their private data alongside the public data already in Atlas. EMBL-EBI is part of the European Molecular Biology Laboratory (EMBL) and is located on the Wellcome Trust Genome Campus near Cambridge in the UK. We provide a dynamic, international working environment and have close ties with both the University of Cambridge and the Wellcome Trust Sanger Institute. EMBL-EBI staff enjoy many benefits including excellent sports facilities, a free shuttle bus to Cambridge and other nearby centres, an active sports and social club and an attractive working environment set in 55 acres of parkland.