{"id":3726280,"url":"https://alion.io/job/sagl-consulting-senior-aws-network-firewall-engineer-l3","title":"Senior AWS Network & Firewall Engineer (L3)","company":{"id":3808230,"name":"Sagl 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EC2","optional":false},{"name":"AWS","optional":false},{"name":"DNS","optional":false},{"name":"VPN","optional":false},{"name":"Windows","optional":false}],"status":"live","first_seen_at":"2026-11-04T00:00:00Z","employer_posted_date":null,"last_verified_at":"2026-11-04T00:00:00Z","board_verified":false,"closed_at":null,"days_open":2,"trust":{"level":"not_scored","repost_count":null,"flags":[],"days_open":2},"description":"Job Description\nWe are seeking an experienced Network & Firewall Engineer to design, administer and troubleshoot AWS networking infrastructure, firewall services and enterprise network security solutions.\nKey Responsibilities\nDesign and manage AWS VPCs, subnets, routing and Transit Gateway (TGW).\n\nConfigure and troubleshoot VPN connectivity and network routing.\n\nManage AWS Security Groups and Network ACLs (NACLs).\n\nAdminister and troubleshoot AWS Network Firewall, WAF and Palo Alto firewalls.\n\nSupport ALB, NLB and GWLB services.\n\nManage Route 53 and troubleshoot DNS resolution issues.\n\nSupport and troubleshoot Squid proxy services.\n\nPerform advanced L3 network and firewall troubleshooting.\n\nReview firewall policies, security rules and network configurations.\n\nLead root cause analysis for complex network incidents.\n\nImplement network optimisation and approved security changes.\n\nRequirements\nMinimum 6 years of overall relevant experience.\n\nMinimum 5 years in Network & Security, including AWS networking and firewall technologies.\n\nStrong hands-on experience with VPC, subnets, routing, TGW and VPN.\n\nExperience with AWS Network Firewall, WAF, Security Groups and NACLs.\n\nExperience with Palo Alto firewalls and Squid proxy.\n\nKnowledge of ALB, NLB, GWLB and Route 53.\n\nStrong L3 network troubleshooting and security policy management experience.\n\nBachelor's degree in IT, Computer Science or equivalent qualification.\n\nAWS Certified Advanced Networking – Specialty certification required.\n\nSkills\nSquid, Certifications, Subnetting, Security Group, Information Technology, DNS Management, Computer Science, Network Troubleshooting, VPN Network, IP Routing, Amazon EC2, Network Administration and Maintenance, Windows Firewall, VPN, Amazon VPC, Firewall Management","description_format":"text","description_chars":1774,"description_truncated":false,"requirements":{"experience_years_min":6,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":[],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":[],"lifecycle":[{"event":"open","at":"2026-11-04T04:42:45Z"}],"visa":[],"liveness":{"score":54,"band":"ok","label":"Likely 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