Experis - Linux Middleware Systems Administrator

il y a 2 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 FREN (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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