Firewall Experts in Düsseldorf
who are vetted, available and matched in minutes with the power of AIHire experts who design secure network boundaries, configure next-generation firewalls and connect protection with cloud, VPN and identity systems. Find vetted, available freelancers with the precise experience your project needs, matched quickly through FRATCH.
Meet FRATCH Experts in Düsseldorf, 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-departmental collaboration with other teams on operations and further development, and reporting.
Firewall vulnerability analysis.
Firewall access requests.
Troubleshooting IP communication issues on network and firewall infrastructure.
Security-critical IT infrastructure, processing of personal data, compliance with legal requirements.
Products: Palo Alto Networks Firewalls, Cisco ACI, Checkpoint Firewalls, F5
Technologies: SDN, SDWAN, Cisco EPIC, Cisco ACI
Timo T.
Last position:
Gronic Ident & Sign at Gronic Systems GmbH
Gronic Ident & Sign
Core technologies: Android, Jetpack Compose, Retrofit, Regula Document Reader, Adobe Sign
Android app on dedicated devices for identifications and electronic signatures at the PoS
Andreas W.
Last position:
Freelancer at Infrafibre Networks GmbH
- Determining the current status (planning status / expansion status) of the so-called interpolygon routes
- Preparing an end-to-end project plan for the individual routes, taking active and passive components and activities into account
- Monitoring and controlling plan implementation
- Optimizing the selected network architecture
- Creating network and splice plans
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
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
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
Discover over 15,000 top freelancers
Statistics of experts using Firewall
Aggregated from the professional profiles of matched freelancers.
Experience
23 years (Germany: 22 years)
Position duration
2.1 years (Germany: 2.2 years)
Positions per freelancer
16 (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: 43%)
Certifications per freelancer
6 (Germany: 5)
Most common languages
German, English, Arabic
Speak two or more languages
90% (Germany: 98%)
Based on our profile pool as of 29 Oct 2026.
Daily rate distribution
The chart shows how the daily rates of experts in this technology in Düsseldorf are distributed, based on recent contracts on our platform. Each bar covers a rate range — its height shows the share of experts charging within that range.
Average rates of experts in Düsseldorf 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 29 Oct 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 (80%)
- Telecommunication (70%)
- Banking and Finance (60%)
- Government and Administration (50%)
- Retail (50%)
- Insurance (40%)
- Transportation (40%)
- Manufacturing (40%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
Network protection
A firewall controls traffic between trusted and untrusted networks. It applies rules to allow, inspect or block connections based on addresses, ports, applications, users and content. Modern firewalls can combine packet filtering with intrusion prevention, malware inspection, web controls and encrypted traffic analysis.
What it builds
Firewalls support secure office networks, data centres, cloud environments and industrial systems. They separate sensitive services, publish applications safely and provide controlled access for employees, partners and remote teams.
- Segment production, corporate and guest networks
- Protect internet-facing applications and APIs
- Connect sites and users through encrypted VPNs
- Enforce access policies across hybrid infrastructure
Ecosystem and tooling
Firewall work spans physical appliances, virtual appliances and cloud-native controls. Common ecosystems include Palo Alto Networks, Fortinet FortiGate, Cisco, Check Point, pfSense and AWS, Azure or Google Cloud firewall services. Strong specialists also use routing, DNS, NAT, TLS, identity providers, SIEM tools and infrastructure-as-code workflows.
When expertise matters
Companies bring in freelance firewall specialists during migrations, office or data-centre changes, cloud adoption and security reviews. They are also useful when rules have become difficult to audit, VPN access is unreliable or network incidents expose gaps in segmentation.
- Replace or consolidate firewall platforms
- Review rules, objects, logs and change processes
- Design high-availability and disaster-recovery setups
- Tune intrusion prevention and traffic inspection
Working in Düsseldorf
Teams in Düsseldorf may need firewall expertise for connected offices, logistics operations, industrial environments, retail systems and business services. Remote delivery works well for planning, rule reviews and configuration, while on-site access can help with hardware changes, network cutovers and incident response. Clear German or English communication should match the project team and its documentation.
Signs of quality
Strong professionals begin with traffic flows, assets, risks and business requirements rather than copying a standard rule set. They document decisions, use least-privilege policies, test changes safely and establish logging that supports investigation without creating unnecessary noise. They also explain how to operate the environment after handover, including backups, upgrades, rollback plans and regular rule reviews.
Frequently asked questions
Before you brief your next project: the most common questions about Firewall.
A firewall controls network traffic according to defined security policies. Companies use it to separate networks, protect public services, secure remote access, inspect connections and limit movement between systems after a breach.
A firewall primarily controls network and transport traffic, while a web application firewall, or WAF, focuses on HTTP requests reaching web applications. They address different layers and are often used together rather than treated as substitutes.
A strong firewall professional should understand routing, switching, DNS, NAT, VPNs, TLS and identity management. Experience with cloud networking, SIEM platforms, incident response and infrastructure as code is also valuable for hybrid environments.
The right level depends on the risk and scope of the environment. A rule cleanup may need focused configuration expertise, while a platform migration, high-availability design or incident response engagement calls for someone who has handled complex networks and can plan safe changes.
Much of Firewall work can be done remotely through secure administrative access, including design, policy review, monitoring and documentation. On-site collaboration may still be useful for appliance installation, cabling, network cutovers or environments that restrict remote access.
Ask which vendors and environments the specialist has supported, how they approach rule design and how they test changes. Also request examples of documentation, rollback planning, logging strategy and communication during a Düsseldorf on-site engagement or remote handover.
Good firewall work is based on documented traffic flows, clear ownership and least-privilege rules. Look for evidence of safe change procedures, useful monitoring, tested failover, regular review and an understandable operating guide rather than a configuration that only works while its author is present.
A firewall may be complemented by security groups, network access controls, zero-trust policies, endpoint protection and a WAF. Cloud-native controls can replace some perimeter functions, but companies still need deliberate segmentation, identity-based access and monitoring across the full environment.
The average hourly rate of freelancers in Dusseldorf, Germany who have used Firewall in their recent projects is 102 €, which corresponds to a daily rate of about 817 € 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 23 years of professional experience, with a single engagement typically lasting around 2.1 years.
The most common languages among freelancers in Dusseldorf, Germany who have used Firewall in their recent projects are German (100%), English (90%), and Arabic (20%).
The most common industries among freelancers in Dusseldorf, Germany who have used Firewall in their recent projects are Information Technology (80%), Telecommunication (70%), and Banking and Finance (60%).
The most common business areas among freelancers in Dusseldorf, Germany who have used Firewall in their recent projects are Information Technology (100%), Operations (90%), and Project Management (90%).
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 
Essen 
Nuremberg Request a free demo
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Philipp Thomaschewski
FRATCH CEO
