Julien Fleury is a Fullstack Web Developer and Ensimag engineer with over a decade of experience building performant, production-grade web applications and financial platforms. Currently at Pennylane, he helps centralize accounting workflows and automate bookkeeping, bringing strong Angular and RxJS expertise to user-facing systems. Previously a lead frontend developer at IBM, he introduced best practices, reduced technical debt, and coordinated international teams on large-scale Angular projects. A functional programming enthusiast, he mixes Clojure, data streams and parallelism into pragmatic solutions and has hands-on experience with z Systems benchmarking, blockchain prototypes and time-series analytics. Based in Montpellier, he pairs systems-level performance tuning with curiosity across chatbots, VR and data analysis—often surfacing non-obvious optimizations from complex metrics.
Engineer's degree in Information Technology and Applied Mathematics, Information Systems Engineering, 11th of 257 students in second year, 4th of 60 in ISI option, Engineer's degree in Information Technology and Applied Mathematics, Information Systems Engineering, 11th of 257 students in second year, 4th of 60 in ISI option at Ecole Nationale Supérieure d'Informatique et de Mathématiques Appliquées de Grenoble / ENSIMAG
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Julien Fleury - Fullstack Web Developer at Pennylane