{"id":2427608,"url":"https://alion.io/job/keyteo-ingenieur-reseau","title":"Ingénieur Réseau","company":{"id":4428081,"name":"Keyteo","domain":"keyteo.com","url":"https://alion.io/company/keyteo-2","size_band":null,"is_staffing_agency":false,"employer_type":"services","is_intermediary":false,"listed_via":null,"ats_vendor":null,"truth_index":null},"role":"Networking","role_family":"Networking","seniority":null,"employment_type":null,"work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"explicit","locations":["Luxembourg City, Luxembourg"],"countries":["LU"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"TCP/IP","optional":false},{"name":"DNS","optional":true},{"name":"VPN","optional":true}],"status":"live","first_seen_at":"2026-10-13T08:05:53Z","employer_posted_date":null,"last_verified_at":"2026-10-13T08:05:53Z","board_verified":false,"closed_at":null,"days_open":22,"trust":{"level":"not_scored","repost_count":null,"flags":[],"days_open":22},"description":"We are seeking an experienced network consultant to join our network team located in Luxembourg and assist in the design, implementation, and validation of this segmentation. He/She will be able to support the day-to-day operations (Run) and lead the implementation of network flows within a complex and secure banking infrastructure. The consultant will work closely with internal teams (infrastructure, security, application owners) to ensure timely, high-quality delivery of network changes and configurations \n\nResponsibilities\n\nAs a Network Engineer, you are able to:\n\nCollaborate with the network team to analyze the current network infrastructure.\n\nDesign and implement network strategies to enhance security and performance.\n\nManage and implement network flows (Firewall rules, load balancer configurations) across environments.\n\nConfigure and maintain Palo Alto and Cisco ASA/Firepower Firewalls.\n\nEnsure compliance with internal security and change management processes.\n\nTroubleshoot and resolve network-related incidents and requests.\n\nMaintain clear and proactive communication with stakeholders throughout the lifecycle of each request.\n\nDocument configurations, changes, and procedures.\n\nCollaborate with cross-functional teams to support infrastructure migrations and new deployments.\n\nRequirements\n\nProven experience as a network consultant or similar role.\n\nExpertise in network technologies, including: Palo Alto Firewalls (PanOS, security policies, NAT, App-ID)\n\nCisco ASA/Firepower (ACLs, NAT, FTD, FMC)\n\nLoad balancers (F5 or equivalent)\n\nTCP/IP, routing, switching, VLANs, VPNs\n\nStrong understanding of network security principles and best practices.\n\nExcellent problem-solving skills and attention to detail.\n\nAbility to work collaboratively within a team, including application teams.\n\nEffective communication skills, both written and verbal.\n\nPreferred Qualifications\n\nYou hold a master's degree in IT\n\nYou are fluent in French and in English\n\nYou have specific knowledge on technologies such as Routing, Switching, Firewalling, NAC, DNS,\n\nVPN, Load balancing on Cisco, Palo Alto and F5 appliances\n\nCertifications such as CCNA, CCNP, or equivalent and/or knowledge of cloud networking solutions is a plus.\n\nKnowledge of cloud 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