Experis - Linux Middleware Systems Administrator

il y a 3 semaines


Laeken, Belgique Experis Temps plein

Piloter l'administration des systèmes Linux et des stacks Middleware critiques afin d'assurer stabilité, performance et cyber-résilience en environnement production-grade. Scope : admin système, couche applicative Middleware, observabilité et sécurisation. Responsabilités Administration end-to-end des environnements Middleware sur serveurs Linux Gestion et exploitation des composants: serveurs applicatifs (ex. JBoss), serveurs web (ex. Apache Server), conteneurs applicatifs (ex. Tomcat) Monitoring systémique et applicatif via plateformes de supervision et observabilité (logs, KPIs, alerting) Tuning & optimisation des performances (CPU, RAM, IO, JVM Middleware, gestion des logs et rotation) Hardening sécurité systems + Middleware (Scap baseline alignment, CIS hardening, services segmentation) Gestion des accès et des comptes (IAM app access coordination, least privilege) Automatisation via Shell scripting et outils d'orchestration / supervision Contribution aux programmes de résilience IT & cyber-production readiness Participation aux tests de failover, cyber drills et supervision pro-active de la delivery Middleware Exigences Minimum 5 ans d'expérience en administration Linux Expertise en stacks Middleware critiques (serveurs applicatifs, serveurs web, supervision & monitoring) Solide autonomie et ownership de la coordination Middleware en production Au moins 1 certification Linux reconnue, parmi: LPIC-2 RHCE (Ex294) Lfce SUSE Sce, Oracle OCP Linux, SUSE Certified Engineer, etc. Mindset opérationnel : rigueur prod, governance des logs, hardening, coordination applicative Capacité à orchestrer le Middleware avec les squads : supervision, delivery & cyber readiness FR+EN (NL) Soft skills clés: Autonomie extrême, coordination systems + Middleware Vision orientée résilience, monitoring et readiness Ownership fort en prod, approche pragmatique faite pour durer Communication claire, fiable et cross-squad



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