{"id":1500989,"url":"https://alion.io/job/anetsys-expert-cybersecurite","title":"Expert Cybersécurité","company":{"id":670845,"name":"ANETSYS","domain":"anetsys.com","url":"https://alion.io/company/anetsys","size_band":"51-200","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Join","truth_index":null},"role":"Security","role_family":"Security","seniority":"senior","employment_type":"contractor","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":59000,"max_usd":106000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":34},"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Apache Kafka","optional":false},{"name":"Bash","optional":false},{"name":"Crowdstrike","optional":false},{"name":"DNS","optional":false},{"name":"Docker","optional":false},{"name":"Elastic SIEM","optional":false},{"name":"ElasticSearch","optional":false},{"name":"Grafana","optional":false},{"name":"IBM QRadar","optional":false},{"name":"Kibana","optional":false},{"name":"Kubernetes","optional":false},{"name":"Logstash","optional":false},{"name":"MariaDB","optional":false},{"name":"Microsoft Defender","optional":false},{"name":"MISP","optional":false},{"name":"PostgreSQL","optional":false},{"name":"Prometheus","optional":false},{"name":"Python","optional":false},{"name":"Rest API","optional":false},{"name":"SentinelOne","optional":false},{"name":"SIEM","optional":false},{"name":"Splunk","optional":false},{"name":"Tcpdump","optional":false},{"name":"VirusTotal","optional":false},{"name":"Windows","optional":false},{"name":"Windows Server","optional":false},{"name":"Wireshark","optional":false},{"name":"YARA","optional":false},{"name":"YARA","optional":false},{"name":"Zeek","optional":false},{"name":"Zscaler","optional":false}],"status":"live","first_seen_at":"2026-09-29T14:37:25Z","employer_posted_date":"2026-09-29","last_verified_at":"2026-10-14T17:40:15Z","board_verified":true,"closed_at":null,"days_open":15,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":15},"description":"Présentation de l’entreprise\nEnracinée dans la région de la Marne depuis sa fondation en 2019, Anetsys incarne une entreprise dynamique du secteur informatique, basée à Reims. Son savoir-faire s'étend largement dans ce domaine, englobant les systèmes et réseaux, le développement de sites Web ainsi que la cyber-sécurité.\nDans le cadre du renforcement de ses équipes, nous recherchons un Expert Cybersécurité pour intervenir sur des environnements complexes de SOC, SIEM, sécurité réseau, DNS, EDR/XDR et Threat Intelligence.\nVos missions\n· Administrer et exploiter les solutions SIEM/SOC : Elastic Security, Splunk, QRadar.\n· Superviser et analyser les logs de sécurité : Elastic Agent, Beats, Rsyslog, Syslog-ng.\n· Administrer et sécuriser les infrastructures DNS : Infoblox, BIND, DNSSEC, DNS Filtering.\n· Exploiter les solutions Firewall / Proxy / Web Security : Fortinet, Palo Alto, Check Point, Blue Coat, Zscaler.\n· Analyser les alertes et incidents via les solutions EDR/XDR : CrowdStrike, Defender, SentinelOne.\n· Réaliser des investigations réseau avec Wireshark, tcpdump et Zeek.\n· Exploiter la Threat Intelligence avec MISP et VirusTotal.\n· Développer et optimiser les règles de détection avec MITRE ATT&CK, Sigma et YARA.\n· Automatiser les tâches de sécurité avec Python, Bash et REST API.\n· Participer à la détection, l’investigation et la réponse aux incidents de sécurité.\n· Contribuer à l’amélioration continue de l’architecture et des dispositifs de sécurité.\nVos compétences\nSIEM / SOC : Elastic Security, Elasticsearch, Kibana, Logstash, Splunk, QRadar\nDNS : Infoblox, BIND, DNSSEC, DNS Filtering\nNetwork Security : Fortinet, Palo Alto, Check Point, Blue Coat, Zscaler\nEDR/XDR : CrowdStrike Falcon, Microsoft Defender, SentinelOne\nThreat Intelligence : MISP, VirusTotal\nNetwork Analysis : Wireshark, tcpdump, Zeek\nSystèmes : RHEL/Rocky Linux, Windows Server\nAutomatisation : Python, Bash, REST API, JSON, Regex\nInfrastructure : Docker, Kubernetes\nDétection : MITRE ATT&CK, Sigma, YARA\nMonitoring / Data : Prometheus, Grafana, PostgreSQL, MariaDB, Kafka\nProfil recherché\nFormation supérieure en informatique ou cybersécurité.\nMinimum 5 ans d’expérience en cybersécurité opérationnelle ou poste similaire.\nTrès bonnes connaissances en SIEM, réseaux, DNS et analyse de logs.\nExpérience sur plusieurs solutions de sécurité de l’environnement présenté.\nMaîtrise de Python ou Bash appréciée.\nCapacité à analyser des incidents complexes et à mener des investigations techniques.\nAutonomie, rigueur, esprit d’analyse et capacité à travailler en environnement critique.\nAvantages\nPourquoi nous rejoindre ?\nMissions variées et challenges internationaux.\nTravail dans un SOC dynamique et innovant.\nOpportunité de prendre des initiatives et de contribuer à la stratégie globale de sécurité.\nConditions favorables à l’épanouissement personnel et 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