Build tools have nowadays become a vital part of the software development life-cycle. With a constantly increasing size of the software projects and the spread of continuous integration and automated tests, build tools are required to guarantee both reliability of the build pipeline as well as competitive performance. Parallelise at best the jobs that a build tool performs during the build process awards indisputable benefits to companies in the market of software solutions. Nonetheless, this aspect of the build tools lacks extensive experimentation, as very few and limited optimisation are embedded in these tools. In this dissertation, we present an improved scheduling scheme developed for the Buck build tool at Uber.