Firewall Experts in Dusseldorf
matched in minutes by precise AIHire experts who design, configure and maintain network firewalls, web application firewalls and cloud security controls. They deliver segmented architectures, secure remote access and clear rule sets, with fast, precise matching to vetted, available freelancers.
Meet FRATCH Experts in Dusseldorf, who have recently used Firewall
Rudolf E.
Last position:
Datacenter Engineer, Network & Security Administrator at International insurance group
Operation and further development of the network and security infrastructure.
Monitoring, analysis and resolution of network and security incidents.
Cross-department collaboration with other specialist teams for operations, further development and reporting.
Firewall vulnerability analysis.
Firewall rule approvals.
Troubleshooting IP communication issues in the network and firewall infrastructure.
Security-critical IT infrastructure, processing of personal data, compliance with legal regulations.
Products: Palo Alto Networks Firewalls, Cisco ACI, Checkpoint Firewalls, F5
Technologies: SDN, SDWAN, Cisco EPIC, Cisco ACI
Christian W.
Last position:
Software Engineer, cross-platform Application Manager at International major bank
- Creating interfaces between the legacy platform and the new container solution
- Coordinating required contributions from line units
- Moderating regular status meetings with the software vendor
- Minimally invasive conversion of TWS scheduling from the old to the new platform
- Environment: IBM Mainframe, DB2, CICS, MQ, Red Hat Linux, Oracle, Kubernetes, Kafka, Helm, GitLab, Jenkins
Rashmi K.
Last position:
Service Lifecycle Manager at Vodafone Group Services GmbH
Ensured 99%+ platform availability across Android, iOS, and web, maintaining zero customer-impact and zero P1 incidents through proactive monitoring and risk mitigation.
Led Incident, Problem, and Change Management with offshore operations and vendors, driving rapid issue resolution and improving product stability.
Partnered with QA teams and international OpCos to validate defects, reproduce issues, and enhance product quality using real-time customer insights.
Managed end-to-end lifecycle activities including platform migrations, infrastructure upgrades, certificate renewals, and integrations (Identity, API, Messaging).
Established operational excellence and governance by designing service support models, leading Early Life Support (ELS) and post-launch stabilization, delivering KPI reporting, and ensuring seamless transition from project to service management.
Product: Secure Net - Classic, Converged & Home Wifi Protect
Product Description: The all-in-one digital security service that helps keep you and your family safe online when using the Vodafone (Mobile and Broadband) network. Get alerts if your personal information shows up anywhere it shouldn't, whilst we find and block malicious content across all your devices using.
Clients: Vodafone OpCos - Spain, Italy, UK, Ireland, Greece, Turkey, Germany, Portugal, Romania
Role & Location: Service Manager for Lifecycle and Operations at Düsseldorf, Germany
Worked with/on: ITSM Remedy, Jira, Confluence, Splunk, Dynatrace, Tableau, Mongo DB, Google Analytics, App Follow
Reza S.
Last position:
DevOps and Cloud Engineer at Rhomberg Sersa Rail Group
- Migration of backups and complete workloads to AWS and Azure, including setup and management of AKS & EKS clusters.
- Automation with Terraform & ArgoCD, CI/CD pipelines implemented with GitLab.
- System monitoring on OpenShift 4 (on-premise) with Grafana & Prometheus, use of CloudWatch and X-Ray for analysis and logging.
- Building and maintaining secure network infrastructures (VPCs, SGs, WAF, ACLs), integration of Azure Log Analytics.
- Close collaboration with infrastructure and development teams, maintenance of technical documentation with Confluence, ticket handling via Jira, and promoting cloud knowledge within the company.
Hisham E.
Last position:
System Engineer Network & Security at Isringhausen GmbH
- Operation, maintenance and administration of the global network & security system landscape
- Troubleshooting and support in 2nd & 3rd levels and provide technical advice to other dept.
- Configuration of complex LAN/WAN/SD-WAN and WLAN network infrastructures (N5K, N9K, ASR 8000, Wireless Controller WLC9800, AP C91xx and VMware Velo Cloud)
- Control of external service providers as part of service and escalation management
- Implementation and monitoring of system updates (software upgrades, minor/major changes)
Ralph K.
Last position:
Product Owner / Business Owner at AXIS Management Consulting GmbH
- Full product responsibility from a business perspective: requirement analysis, UX design, product strategy, and go-to-market implemented without an internal dev team using fully AI-supported development (Claude Code / Anthropic)
- Technical differentiation: KRITIS-compliant air-gapped deployment (Windows/NSIS), GDT interface for PVS integration, DATEV-LODAS export for payroll
- Managed pilot operation with initial external client (Dormagen medical practice): structured requirement gathering, test support, error analysis, and release management
- Developed rollout and sales strategy for market entry in the segment of private practices and small medical centers
- Human-in-the-Loop development principle: business decision → AI implementation → manual review → approval → release – each sprint documented in Jira (TIME project), every change traceable via co-authored commits
- Product outcome: Tauri/Rust desktop app with GDT watcher, multi-tier model (Starter/Professional/Enterprise), cloud mirror on Hetzner/Traefik, complete ISMS framework based on ISO 27001 and BSI basic protection as product foundation
- Direct method validation for the test manager role: hands-on experience with quality assurance of AI-generated products from a user perspective, review gate discipline, release approval under GDPR and the EU AI Act
Andreas W.
Last position:
Freelancer at Infrafibre Networks GmbH
- Assessing the current status (planning stage / rollout status) of the so-called inter-polygon routes
- Creating an end-to-end project plan for the individual routes, considering active and passive components and tasks
- Monitoring and controlling the implementation of the plan
- Optimizing the chosen network architecture
- Creating network and splice diagrams
Abdelhak M.
Last position:
Network Architect at Bechtle Managed Services GmbH
- Created as-is network documentation for a Bechtle customer
- Analyzed existing configurations and adjusted them
- Advised on Fortinet and Check Point products
- Troubleshot complex routing, switching and application issues
- Tools: MS Azure, FortiManager, Cisco Nexus & Catalyst, Cisco WLAN Controller, Citrix Netscaler SD-WAN, MS Visio, Checkpoint VSX, Wireshark
Bernhard D.
Last position:
Enterprise Architect. And responsible for the cross-functional architecture as well as all domains with a focus on the sales at Süddeutsche Krankenversicherung
Creation of business and technical concepts as well as support for enterprise architecture management as part of the migration to the Adesso standard insurance solutions and the renewal of surrounding systems
Interface definitions
Business analysis and creation of the business concepts for input management and sales
Creation of architecture guidelines and processes
Processing technical and business decisions in the architecture board
Definition of service processes and system management aspects
Creation of the technical target operating model
Creation of an integration architecture for AI/LLMs from the providers Commasoft and Insiders
CommaSoft (Alan) webpages and web services
Insiders for Smartfix based on web services
Creation of a question catalog for a security/regulatory check.
Analysis of threats using threat modeling / STRIDE incl. creation of a set of measures to secure the systems
System environment: Jira, Confluence, Java, Enterprise Architect, VAIT/DORA, KritisV, GDPR, IT ServiceMgmt, Adesso Ecosphere and Insure Health, DoPIX and successor product, SmartFix, SmartFlow, Zabas, Kolumbus, Clarc archive, BiPRO, AI / LLM, MS Azure, AWS, TOM/FMO
Discover over 15,000 top freelancers
Statistics of experts using Firewall
Aggregated from the professional profiles of matched freelancers.
Experience
24 years (Germany: 22 years)
Position duration
2.2 years
Positions per freelancer
14 (Germany: 15)
Top business areas
Information Technology, Operations, Project Management
Top industries
Information Technology, Telecommunication, Banking and Finance
Certification focus areas
Information Technology, Project Management, Operations
Bachelor's degree or higher
63% (Germany: 75%)
Master's degree or higher
13% (Germany: 41%)
Certifications per freelancer
6 (Germany: 5)
Most common languages
German, English, Arabic
Speak two or more languages
89% (Germany: 98%)
Based on our profile pool as of 19 Sep 2026.
Daily rate distribution
The chart shows how the daily rates of freelancers in this technology in Dusseldorf are distributed, based on recent contracts on our platform. Each bar covers a rate range — its height shows how many freelancers charge within that range.
Average rates of experts in Dusseldorf using Firewall
Rates are based on recent contracts and do not include FRATCH margin.
The average daily rate is the mean of all daily rates from recent contracts of comparable freelancers on our platform.
The median daily rate is the middle value of all daily rates — half of comparable freelancers charge less, half charge more. Unlike the average, it is barely affected by outliers.
Calculated based on our freelancers’ daily rates as of 19 Sep 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
Firewall experts industry focus
See which industries our matched freelancers work in most often — every figure is calculated live from the freelancers on FRATCH.
- Information Technology (78%)
- Telecommunication (67%)
- Banking and Finance (56%)
- Government and Administration (56%)
- Insurance (44%)
- Manufacturing (44%)
- Retail (44%)
- Healthcare (33%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
What a Firewall Does
A firewall controls traffic between networks, systems and applications according to defined security rules. It can permit trusted connections, block unwanted access, inspect sessions and record security events. Modern firewalls protect offices, data centres, cloud environments and internet-facing services rather than acting as a simple barrier at the network edge.
Core Technologies
Firewall specialists work across network firewalls, next-generation firewalls, web application firewalls and host-based controls. Common capabilities include stateful inspection, application awareness, intrusion prevention, malware filtering, VPN termination, identity-based policies and TLS inspection. The right design depends on traffic patterns, risk, performance needs and the systems behind each connection.
Ecosystem and Tooling
Projects often combine firewall platforms with routing, switching, identity and observability tools. Specialists may work with Fortinet FortiGate, Palo Alto Networks, Cisco Secure Firewall, Check Point, Sophos, pfSense or cloud-native controls from AWS, Microsoft Azure and Google Cloud. They also use central policy management, log analysis, vulnerability data and infrastructure-as-code where repeatable configuration matters.
Typical Project Work
- Design zones, trust boundaries and least-privilege policies
- Configure site-to-site and remote-access VPNs
- Protect APIs and web applications with a WAF
- Migrate rules during data-centre or cloud changes
- Investigate blocked traffic and security alerts
These deliverables support hybrid workplaces, ecommerce services, manufacturing networks, healthcare environments and public-facing applications. In Dusseldorf, a project may involve on-site coordination with local infrastructure teams alongside remote work across Germany or international locations.
When Companies Need Expertise
Companies bring in freelance firewall specialists when a migration, audit, incident or network redesign requires focused security knowledge. Warning signs include undocumented rules, broad network access, repeated outages, slow policy changes or logs that no one reviews. Short-term expertise can also help establish change control, test failover and prepare operational documentation before an internal team takes over.
What Strong Specialists Bring
Strong professionals translate business access needs into precise, maintainable policies. They understand routing, DNS, TCP/IP, certificates, Linux and Windows networking, identity providers, cloud security groups and incident response. They test changes safely, explain decisions clearly and separate urgent containment from lasting remediation. For Dusseldorf-based collaboration, German and English communication can both be useful, depending on the company and project team.
Frequently asked questions
Before you brief your next project: the most common questions about Firewall.
A firewall controls traffic entering or leaving a network, system or application. Companies use it to enforce access policies, separate sensitive environments, support VPN connections and detect suspicious activity. The rules should reflect real business flows and be reviewed as systems change.
A next-generation firewall adds capabilities such as application identification, user-aware policies, intrusion prevention and content inspection to basic stateful traffic filtering. The extra controls can improve visibility, but they also require careful tuning, suitable licensing and enough processing capacity. A specialist should select features based on the environment rather than the product label.
A network firewall protects traffic between networks, hosts and services, while a web application firewall focuses on HTTP and HTTPS requests reaching web applications. They address different layers and are often used together. A specialist can map the required controls to APIs, websites, internal services and cloud workloads.
A firewall specialist should understand routing, DNS, VPNs, certificates, identity systems and network segmentation. Cloud networking, log management, vulnerability handling and incident response are also valuable. Knowledge of automation helps teams apply consistent policies and document changes.
A firewall project needs a professional who has handled the same type of environment, traffic flows and platform involved. A straightforward rule review differs greatly from a high-risk migration, incident response effort or multi-cloud redesign. Ask for examples of comparable deliverables, testing methods and rollback planning rather than relying on a generic title.
A firewall specialist can often work remotely through controlled access, documentation sessions and shared change procedures. On-site work may still help with hardware installation, cabling, physical troubleshooting or coordination during a critical cutover. Dusseldorf teams should clarify access controls, working hours and whether German-language communication is required.
A firewall professional should explain why each rule exists, how it will be tested and what could break after deployment. Look for structured documentation, least-privilege thinking, monitoring plans and clear rollback steps. Strong specialists also remove obsolete rules and communicate risk without obscuring technical detail.
A managed firewall service can suit companies that lack continuous monitoring capacity or want an external team to handle routine operations. Internal control may be preferable when policies are highly sensitive, response must stay close to business systems or the team already has the required expertise. A freelancer can assess the operating model, define responsibilities and improve the handover.
The average hourly rate of freelancers in Dusseldorf, Germany who have used Firewall in their recent projects is 105 €, which corresponds to a daily rate of about 836 € based on an 8-hour working day.
Of the freelancers in Dusseldorf, Germany who have used Firewall in their recent projects, 63% hold at least a Bachelor's degree and 13% hold at least a Master's degree.
On average, freelancers in Dusseldorf, Germany who have used Firewall in their recent projects have 24 years of professional experience, with a single engagement typically lasting around 2.2 years.
The most common languages among freelancers in Dusseldorf, Germany who have used Firewall in their recent projects are German (100%), English (89%), and Arabic (22%).
The most common industries among freelancers in Dusseldorf, Germany who have used Firewall in their recent projects are Information Technology (78%), Telecommunication (67%), and Banking and Finance (56%).
The most common business areas among freelancers in Dusseldorf, Germany who have used Firewall in their recent projects are Information Technology (100%), Operations (100%), and Project Management (89%).
Main locations of FRATCH Experts, who have recently used Firewall
Our freelancers and interim experts are at home across the DACH region — available on-site in the major business hubs or fully remote. Choose a location to discover matched specialists, local market insights and up-to-date availability.
Berlin 
Hamburg 
Munich 
Cologne 
Frankfurt 
Stuttgart 
Dortmund 
Nuremberg Request a free demo
Get in touch with the FRATCH team and we will get back to you within 4 hours.
Would you rather directly get in touch?
We always have the time for a call or email!
Philipp Thomaschewski
FRATCH CEO
