Oxigent Technologies in Barcelona (Poblenou) seeks a Senior System Engineer to lead a strategic modernization program for Datalink observability, monitoring, and provisioning platforms as part of a brand-new team. You will design, build, and deploy scalable software platforms across general infrastructure, collaborate across distributed teams, and apply AI-powered tools to speed delivery. Proficiency in C#/.NET and Grafana is required, English fluency is essential.