{"id":7218,"date":"2026-07-06T07:47:46","date_gmt":"2026-07-06T07:47:46","guid":{"rendered":"https:\/\/itdsportugal.com\/it-jobs\/senior-network-security-engineer-firewall-application-delivery-expertise\/"},"modified":"2026-07-29T13:37:31","modified_gmt":"2026-07-29T13:37:31","slug":"senior-network-security-engineer-firewall-application-delivery-expertise","status":"publish","type":"matador-job-listings","link":"https:\/\/itdsportugal.com\/en\/it-jobs\/senior-network-security-engineer-firewall-application-delivery-expertise\/","title":{"rendered":"Senior Network Security Engineer \u2013 Firewall &amp; Application Delivery Expertise"},"content":{"rendered":"<p><strong>Empower security at the forefront \u2014 master the art of safeguarding complex network architectures!<\/strong><\/p> <p>Hybrid opportunity based in Lisbon<\/p> <p>As a <strong>Senior Network Security Engineer \u2013 Firewall &amp; Application Delivery Expertise<\/strong>, you will work for our client, a leading financial services organization operating under Swiss banking regulations. You will be responsible for managing and evolving a multi-vendor perimeter and application-delivery security estate across multiple sites and datacenters, ensuring robust, automated, and compliant security solutions. This role offers a unique chance to contribute to enterprise-grade security infrastructure while advancing your expertise within a high-autonomy environment.<\/p> <p><strong>Your main responsibilities:<\/strong><\/p> <ul> <li>Operate and enhance F5 BIG-IP platforms, including load balancing, SSL offload, and web application security modules<\/li> <li>Manage next-generation firewalls such as Palo Alto and Check Point, handling NAT, VPNs, and high availability configurations<\/li> <li>Administer Fortinet FortiGate devices within a multi-vendor estate, ensuring optimal performance and security<\/li> <li>Oversee proxy and filtering solutions, including Symantec\/Broadcom ProxySG, with a focus on SSL inspection and traffic management<\/li> <li>Maintain Infoblox DDI (DNS, DHCP, IPAM), exemplifying best practices in IP security and zone management<\/li> <li>Manage Azure network connectivity and security components like ExpressRoute, VNet, Azure Firewall, and VPN Gateway<\/li> <li>Troubleshoot complex traffic, TLS\/SSL, NAT, and routing issues end-to-end through deep packet analysis<\/li> <li>Automate platform configurations using vendor REST APIs, Ansible, and version control systems (Git)<\/li> <li>Develop and update hardening baselines, runbooks, and change documentation<\/li> <li>Provide escalated support (Level 2\/3), partake in on-call rotations, and contribute to a security-first culture<\/li> <\/ul> <p><strong>You\u2019re ideal for this role if you have:<\/strong><\/p> <ul> <li>At least 5 years of experience in perimeter security and application delivery<\/li> <li>Strong proficiency with F5 BIG-IP, Palo Alto PAN-OS, Check Point, Fortinet FortiGate, and related security tools<\/li> <li>Hands-on experience with web proxies, DNS\/DHCP\/IPAM, and Azure network security<\/li> <li>Expertise in automating network configurations via REST APIs and scripting<\/li> <li>Solid understanding of security best practices, risk mitigation, and incident response<\/li> <li>Bachelor&#8217;s degree in computer science, networks, or an equivalent field<\/li> <li>Vendor certifications (e.g., Palo Alto PCNSE, Check Point CCSA\/CCSE, Fortinet NSE) are valued<\/li> <\/ul> <p><strong>It is a strong plus if you have:<\/strong><\/p> <ul> <li>Knowledge of declarative configuration tools like F5 AS3 or Terraform<\/li> <li>Experience with centralized management systems (e.g., Panorama, FortiManager)<\/li> <li>Familiarity with Source-of-Truth concepts such as Nautobot or NetBox<\/li> <li>Previous work in a regulated environment, especially in financial services<\/li> <\/ul> <p><strong>Language required for the role:<\/strong><\/p> <ul> <li>Communicative English (B2-C1 level)<\/li> <\/ul> <p><strong>Eligibility for the role:<\/strong><\/p> <ul> <li>Only candidates with an existing legal right to work in the European Union will be considered for this role.<\/li> <\/ul> <p><strong>#MAKEYourCareerBETTER<\/strong><\/p> <p>Interested? Apply now and include your CV (preferably in English) along with a statement confirming your consent to the processing and storage of your personal data.<\/p> <nav class=\"matador-job-navigation\"> <ul> <li> <a href=\"https:\/\/itdsportugal.com\/en\/?wpid=7218&#038;bhid=9564\" rel=\"button\" class=\"matador-button\" title=\"Apply Now\">Apply Now<\/a> <\/li> <li> <a href=\"https:\/\/itdsportugal.com\/en\/it-jobs\/senior-network-security-engineer-firewall-application-delivery-expertise\/\" rel=\"button\" class=\"matador-button matador-button-secondary\" title=\"More Info\">More Info<\/a> <\/li> <\/ul> <\/nav> ","protected":false},"excerpt":{"rendered":"<p>Empower security at the forefront \u2014 master the art of safeguarding complex network architectures! Hybrid opportunity based in Lisbon As a Senior Network Security Engineer \u2013 Firewall &amp; Application Delivery Expertise, you will work for our client, a leading financial services organization operating under Swiss banking regulations. You will be responsible for managing and evolving &hellip; <a href=\"https:\/\/itdsportugal.com\/en\/it-jobs\/senior-network-security-engineer-firewall-application-delivery-expertise\/\">Continued<\/a><\/p>\n","protected":false},"template":"","meta":{"_acf_changed":false,"_matador_source_id":"9564"},"matador-categories":[],"matador-locations":[],"matador-types":[14],"matador-remote-job-possible":[287],"matador-published-category":[],"matador-skills":[321],"matador-seniority":[123],"matador-position":[],"matador-technology":[2863],"matador-contract-type":[343,369],"matador-priority":[1719],"matador-language":[127],"matador-place":[372],"matador-visibility":[657],"matador-choose-website-to-publis":[400],"class_list":["post-7218","matador-job-listings","type-matador-job-listings","status-publish","hentry","matador-types-contract","matador-remote-job-possible-hybrid","matador-skills-network-engineer","matador-seniority-senior","matador-technology-blank","matador-contract-type-b2b","matador-contract-type-permanent-contract","matador-priority-5-paused","matador-language-english","matador-place-lisbon","matador-visibility-online","matador-choose-website-to-publis-portugal"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.2 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Senior Network Security Engineer \u2013 Firewall &amp; Application Delivery Expertise - ITDS PORTUGAL<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/itdsportugal.com\/en\/it-jobs\/senior-network-security-engineer-firewall-application-delivery-expertise\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Senior Network Security Engineer \u2013 Firewall &amp; Application Delivery Expertise - ITDS PORTUGAL\" \/>\n<meta property=\"og:description\" content=\"Empower security at the forefront \u2014 master the art of safeguarding complex network architectures! 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