Contract in Barcelona with remote working. Transition from senior to FE Lead. Presentation & trained developers, in Redux with React & RXJS, webpack 4, modular re-usable architecture, did greenfield architectural proposal and review and created a greenfield react, redux, redux-observables, epic, RXJS v6, sass, bootstrap, application architecture, proposed considering plotly.js over plottable.js. Went to Cambridge in UK to meet the team of data scientists & the business owners and investor. Migrate platform from legacy Angular to modern React. Original tech stack was varied: angular, react, plottable.js, d3.js, node.js with express, mongoDB, java, posgres & more. Learned organisation techniques, communication skills, docker, basic kubernetes, gitlab.ci, gitlab pipeline to CI/CD.