> Markdown version of [/jobs/ext/1198811-ops-security-engineer-firewall-proxy-filtering-services](https://www.wearedevelopers.com/jobs/ext/1198811-ops-security-engineer-firewall-proxy-filtering-services). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # OPS Security Engineer - Firewall & Proxy Filtering Services - **Company:** ITS Group - **Location:** Brussel, Belgium - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** Microsoft Excel, Agile Methodology, Cloud Computing, CompTIA Network+, Intrusion Detection Systems, Python (Programming Language), Network Security, Network Architecture, Network Segmentation, Firewalls (Computer Science), Vba Programming Language, Fortinet, Firewall Services Module, Servicenow - **Published:** July 8, 2026 - **Apply:** https://be.indeed.com/viewjob?jk=ebc603f5b34e71e9 ## About the Role Minimum 5 years of experience in Firewall environments (mandatory) Strong expertise in: Firewall rules implementation & optimization IPS / IDS Cloud micro-segmentation Experience with: Palo Alto or Fortinet ServiceNow (ITSM module) Excel automation (VBA or Python) Solid understanding of: Security principles Networking & infrastructure architecture Certifications (preferred) PCNSA CompTIA Network+ CCNA Soft Skills Strong analytical mindset with attention to detail Autonomous, proactive, and solution-oriented Excellent communication skills (technical & non-technical) Team player with knowledge-sharing mindset Client-oriented and results-driven Ability to work in Agile environments Flexible and open to on-call support, You have at least 5 years of professional experiences in IT You're eager to learn, motivated and curious ## Description We are looking for a Senior OPS Security Engineer specialized in Firewall and Proxy Filtering Services to join a fast-paced Agile environment. You will play a key role in securing network flows, managing firewall requests, resolving incidents, and ensuring compliance with internal security standards and regulatory requirements. Manage and validate daily firewall flow requests Implement, maintain, and optimize firewall rules and policies Troubleshoot and resolve firewall-related incidents and security issues Ensure firewall configurations comply with security policies and standards Support project teams with firewall and network security expertise Perform detailed analysis for audits, reporting, and flow recertification Document configurations and maintain proper traceability Work in Agile mode and follow ITIL processes (incident & change management) Contribute to continuous improvement of security and network architecture ## Related Videos - [Security Pitfalls for Software Engineers](https://www.wearedevelopers.com/videos/726-security-pitfalls-for-software-engineers) - [In-depth .NET Azure Functions: Isolated mode, performance and durable AI agents](https://www.wearedevelopers.com/videos/100207-in-depth-net-azure-functions-isolated-mode-performance-and-durable-ai-agents) - [Applying Agile Principles to Incident Management ](https://www.wearedevelopers.com/videos/101-applying-agile-principles-to-incident-management) - [WeAreDevelopers LIVE - Back to CODE100](https://www.wearedevelopers.com/videos/1909-wearedevelopers-live-back-to-code100) - [You can’t hack what you can’t see](https://www.wearedevelopers.com/videos/41-you-can-t-hack-what-you-can-t-see) - [From Syntax to Singularity: AI’s Impact on Developer Roles](https://www.wearedevelopers.com/videos/900-from-syntax-to-singularity-ai-s-impact-on-developer-roles) ## Related Articles - [Best Companies in the Netherlands: Top 25 Companies in 2023 ](https://www.wearedevelopers.com/magazine/193-best-companies-in-the-netherlands-top-25-companies-in-2023) - [The 12 Best Jobs for Software Engineers](https://www.wearedevelopers.com/magazine/401-the-12-best-jobs-for-software-engineers) - [The Most Popular IT Jobs on the Market](https://www.wearedevelopers.com/magazine/376-the-most-popular-it-jobs-on-the-market) - [Where to Find Entry-Level Software Engineering Jobs](https://www.wearedevelopers.com/magazine/397-where-to-find-entry-level-software-engineering-jobs) - [Where To Find Software Engineering Jobs](https://www.wearedevelopers.com/magazine/396-where-to-find-software-engineering-jobs) - [How to land a developer job in Amsterdam](https://www.wearedevelopers.com/magazine/36-how-to-land-a-developer-job-in-amsterdam)