{"id":3452818,"url":"https://alion.io/job/dcsit-ingenieur-systeme-mainframe-zos-hf","title":"Ingénieur Système Mainframe z/OS (H/F)","company":{"id":2453496,"name":"DCSIT","domain":"dcsit-group.com","url":"https://alion.io/company/dcsit-group","size_band":"501-1000","is_staffing_agency":false,"employer_type":"services","is_intermediary":false,"listed_via":null,"ats_vendor":null,"truth_index":null},"role":"Enterprise Apps","role_family":"Enterprise Apps","seniority":"staff","employment_type":"freelance","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Paris, France"],"countries":["FR"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":43000,"max_usd":80000,"period":"year","method":"role_country_seniority_unknown","sample_n":139},"experience_years_min":10,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Ansible","optional":false}],"status":"live","first_seen_at":"2026-10-29T07:25:30Z","employer_posted_date":null,"last_verified_at":"2026-10-29T07:25:30Z","board_verified":false,"closed_at":null,"days_open":10,"trust":{"level":"not_scored","repost_count":null,"flags":[],"days_open":10},"description":"Dans le cadre du renforcement de nos équipes, DCS EASYWARE recrute un Ingénieur Système Mainframe z/OS Senior (H/F) pour intervenir auprès d'un acteur majeur du secteur financier.\nVous intégrerez une équipe d'ingénierie système et contribuerez à la disponibilité, à la sécurité et à l'évolution d'environnements Mainframe critiques.\nVos missions\nPiloter les montées de version de z/OS (jusqu'à la version 3.1 minimum) et de ses composants.\n\nAssurer la maintenance système et l'installation des correctifs PTF via SMP/E.\n\nAutomatiser les tâches d'exploitation et de maintenance des environnements Mainframe.\n\nAssurer le support expert sur les incidents complexes et les alertes système.\n\nParticiper aux opérations de bascule et aux exercices de reprise après sinistre.\n\nSuperviser les performances et la capacité des systèmes.\n\nCollaborer avec les éditeurs et constructeurs pour la résolution des problématiques techniques.\n\nRédiger les procédures et assurer le transfert de compétences lors de la passation.\n\n Profil recherché\nVous justifiez d'au moins 10 ans d'expérience en ingénierie système Mainframe et disposez d'une expertise approfondie des environnements IBM z/OS.\nCompétences indispensables :\nExpertise IBM z/OS et expérience des montées de version.\n\nMaîtrise de SMP/E et de la gestion des correctifs PTF.\n\nExpérience en automatisation système et scripting REXX.\n\nConnaissance des ordonnanceurs CA7 et OPC.\n\nAnglais professionnel B2 minimum.\n\nUne expérience des exercices de reprise d'activité, des outils de modernisation Mainframe (Ansible, Zowe, VS Code) ou du secteur bancaire constitue un atout.\nVous êtes reconnu pour votre autonomie, votre rigueur et votre capacité à intervenir sur des systèmes critiques.\nInformations complémentaires\nLocalisation : Paris avec déplacements possibles à Bruxelles.\n\nTélétravail : 8 jours de présence sur site par mois, le reste à distance.\n\nAstreintes : interventions possibles la nuit et le week-end.\n\n 1. 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