Lead the creation of a routing engine for Pie's 450 UK customers, including DPD. Based on the open source Java routing engine GraphHopper, I implemented support for height, weight, width and length restrictions, as well as temporal and legal restrictions required for routing freight vehicles. I designed and implemented a customised version of the A* routing algorithm that was able to track the journey time and block roads as necessary. I used Docker to manage the build & deployment process, and wrote an additional service in Go to manage load balancing and handle external data requirements without impacting the performance of the engine itself.

Wrote tools for Hailo's new Go microservices platform using React.js, Backbone.js and the Flux architecture. I created apps to provision and monitor services, and a realtime dashboard for the platform team. The dashboard graphed the platform's performance, and showed healthchecks and other vital information. I also worked on their payments system, creating an interface for ad hoc payments in conjunction with the customer service team to make the tool accessible and easy to use.