Mark Holt is a technologist with three decades at the sharp end of product & engineering — from building Europe's first secure e-commerce site and neural networks for algorithmic trading in the 1990s, through engineering for NeXT/Apple, to leading some of Europe's largest technology organisations. As CTPO of 10x Banking, he built the core-banking platform that underpins Chase UK; which now manages more than £26bn in deposits. As CTPO of Trainline, he led up to 800 engineers, product managers and designers, migrating the entire stack to AWS (featured twice in Werner Vogels' re:Invent keynotes), building data platforms processing over 1.4TB a day, and delivering 40% annual transaction growth & a £2.2bn IPO in 2019. At Trayport - host to ~90% of Europe's gas and power trading - he...