Software processes, as software products, are variable across projects and thus a one-size-fits-all approach does not work out for development processes. We propose Meduse, an approach for tailoring development processes according to project needs. Such an approach, which is based on software product line and method engineering techniques, takes into account processes similarities (i.e. commonalities) and differences (i.e. variabilities), as well as reusable process fragments. Having processes tailored on demand according to the project needs shall reduce project risks, rise best practices adoption by the development team, support project planning and budget managing, among other benefits.