Firewall Experts in Hamburg
matched in minutes by AIHire experts who design secure network boundaries, configure next-generation firewalls and connect cloud, identity and monitoring controls. FRATCH matches you quickly with vetted, available freelancers who fit your technical needs.
Meet FRATCH Experts in Hamburg, who have recently used Firewall
Stephan M.
Last position:
Product Owner at Self-employed
- Industry: Health Care/ IT
- Tools: Internet, telephone, email, Confluence, Azure DevOps, DISweb, Microsoft Teams, Microsoft Office, FHIR
- Requirements engineering for implementing the e-prescription in an existing PVS and a web-based dialysis monitoring system
- Implementation of the archive and exchange interface of the KBV
- Creation and maintenance of user stories and backlog maintenance
- Stakeholder management and support for developers in implementing the user stories
- Reporting to management and conducting refinements
Minh Duc V.
Last position:
Senior System Engineer Network & Security at F.S. Fehrer GmbH & Co. KG
- Responsible for the configuration, maintenance, monitoring, troubleshooting, and optimization of the IT infrastructure, including Extreme Networks, SD-WAN, and Fortinet security solutions, at all international company locations in Europe and North America
- Development of a comprehensive strategic roadmap to optimize the network architecture, including VLANS, NAC, QoS, firewall configurations, VPNs, DPI, NGFW, threat intelligence, and SSL/TLS inspection
- Implementation of the OneIT strategy through the introduction of new technologies such as Cisco DNA Center, ExtremeCloud IQ, FortiOS, FortiManager, and FortiAnalyzer, which increased employee skills and the efficiency of the IT systems
- Integration of IT and OT systems to optimize the network and security architecture and improve operational efficiency
Enrique G.
Last position:
Security Architect at Capgemini
I implemented a Zero-Trust architecture for robust, military-grade maritime container mini data centers based on VMware & Tanzu to support containerized GIS workloads for ground forces. The main focus was on securing communications, workload protection, and data access in contested electronic battle environments affected by jamming, interception, signal manipulation, and constantly changing operational conditions. I designed and architected use cases so that every element of workload, identity, and system could continue to operate independently and securely even in degraded or disrupted scenarios. In parallel, I defined the enterprise and solution security architecture with LeanIX, Bizzdesign, and HOPEX as enterprise architecture, repository, and governance platforms to maintain architecture inventory, relationships, traceability, target pictures, and security governance in complex environments. For the architectural designs, I used Sparx Enterprise Architect to describe formal architecture views, interfaces, trust boundaries, and system architecture in both IT and OT environments. IriusRisk was used for threat modeling of the solution to identify architecture-driven risks, derive security requirements, and detect countermeasures and design gaps directly from the solution models. Risk and compliance management was supported with Archer. Architecture decisions, control gaps, and operational risks were translated into controlled governance and auditable compliance measures. For documentation, collaboration, and visual design, I used Confluence to maintain Architecture Decision Records, Security Blueprints, and workflows. I used Lucidchart and draw.io to create design artifacts tailored to stakeholders. I also defined OT security concepts with support from electrical and mechanical engineers in the areas of oil, vehicle onboard systems, rail, power plants, pharma, gas turbines, and nuclear technology. I created the end-to-end OT security strategy, starting with global policy, developed into standards and procedures, and finally aligned with Bell-LaPadula, Purdue Model, SABSA, TOGAF ADM, CENELEC 50701, IEC 62443, and NIST standards. In addition, I worked with engineering team leads to identify critical KBP assets and place them under protective measures that segmented SCADA, PLC, and HMI assets. I drove collaboration between Security, IT, and OT teams to create standardized workflows and use cases for the OT security solution catalog, while integrating Defense-in-Depth and Zero-Trust principles into operational environments. A key part of my work was integrating multidisciplinary engineering, security, and operations stakeholders into a unified security blueprinting strategy and ensuring that architecture, threat modeling, governance, and documentation were technically strong and operationally practical.
Stephan L.
Last position:
IT Generalist at SThree
- Software packaging and distribution with SCCM/MECM
- Application responsibility and support (50–100 applications)
- Documentation via ticket system
- User management via AD console
- Software updates and distribution
- Maintenance and updating of software packages
- Customizing scripts with PowerShell
- Rolling out and implementing new software
- Supporting IT security and compliance
Tools and software: Confluence, M365, Active Directory, Intune, Endpoint Management, SCCM/MECM, PowerShell, VMware Hardware: Lenovo, Cherry, Plantronics, Jabra + peripherals
Gunnar W.
Last position:
IT-Consultant at Independent Freelancer
- Enterprise and IT strategy
- Digital transformation
- Process and portfolio management
- Interim IT management
Charles J.
Last position:
Network Architect at RedGlobal GmbH
- Configuration of Dell switches, routers, and access points.
- Troubleshooting and issue resolution.
- Extreme, Cisco and Dell switches and routers environment, Extreme A3 NAC, Extreme CloudIQ.
Habib M.
Last position:
ELO Architect/Admin, NAV Admin & M365 Engineer at KHK (CST Shipping & Marine Services) Group
Enterprise Content Management (ELO ECM) & Process Automation:
- Multi-Tenant System Architecture & Tenants: Designed, deployed, and maintained the ELO infrastructure for over 7080 legal entities (shipping and land-based companies with a total of 150+ active users in onshore/offshore operations).
- User & Group Administration: Full administration of ELO users, creation and maintenance of ELO groups, and implementation of granular, role-based access controls (RBAC).
- Dynamic Workflow Architecture: Designed, programmed, and implemented complex, dynamic approval workflows with hierarchical and cross-departmental approval levels (Multi-Tier Line Approvals, e.g. for invoice approvals and contract management).
- Operational Support & Troubleshooting: Daily troubleshooting of incoming workflow issues, continuous process adjustments, and error resolution during ongoing operations.
- Compliance, Archiving & Optimization: Managed archive structures, replaced paper-based processes with automated ELO pipelines, and ensured compliance with GDPR and audit standards.
Microsoft Dynamics NAV (Navision) – Administration & ERP Support:
- Tenant & User Management: Administration and permission management for complex multi-tenant environments with over 30 tenants (companies and shipping entities) in NAV.
- Master Data & Financial Processes: Created and maintained customers, vendors, posting groups, and supported intercompany transactions.
- Operational Support & Troubleshooting: Daily mid-level error handling for interfaces, document processing, and accounting processes across the various companies.
Hybrid Identity & Modern Workplace Management (M365 / Intune):
- Hybrid Directory Management: Administration of Active Directory (AD) and Entra ID (Azure AD) in a hybrid environment, including identity synchronization, Single Sign-On (SSO), and Multi-Factor Authentication (MFA).
- Endpoint & Security Management: Managed mobile devices and laptops through Microsoft Intune (MDM/MAM), implemented security baselines, compliance rules, and automated software rollouts.
- Security & Network Administration: Administration of Microsoft Defender for Endpoint and management of Sophos VPN authentication profiles to secure remote access.
- Collaboration Infrastructure: Administration of Exchange Online and Microsoft Teams Admin Center, including email hygiene, shared mailboxes, guest access, and SharePoint security policies.
Harry B.
Last position:
IT Systems Manager Assistant at Freshfields Bruckhaus Deringer
- Monitoring the health and performance of internal IT systems (servers, networks, endpoints)
- Performing routine checks on Active Directory, SCCM, antivirus, and MDM platforms
- Diagnosing and resolving hardware/software issues on Windows, macOS, and mobile platforms
- Conducting quality checks when implementing new technologies
- Creating accurate documentation of incidents, changes, and service requests
- Tracking and managing IT equipment inventory
Dominik P.
Last position:
Head of IT at Aarsleff Spezialtiefbau GmbH
- Disciplinary and professional leadership of the IT and service team
- Definition and documentation of the Current Mode of Operation (CMO) in Confluence: application landscape, infrastructure, networks, backup & storage
- Development of the Future Mode of Operation (FMO) including process analysis & stakeholder interviews with all departments using BPMN and flowcharts
- Optimization of license management: reduction of ongoing software costs by approx. 17% p.a.
- Introduction and establishment of Jira as the central tool for project and service management
- Introduction and rollout of the HR software MindKey to digitize HR processes
- Introduction of a VoIP solution with Microsoft Teams incl. PSTN connection to replace classic telephony
- Introduction of the production and planning software OptiControl to digitize operational processes
- Rollout of Intune as a Mobile Device Management solution for Windows, iOS and Android
- Build-up of Power BI dashboards for machine park monitoring and financial reporting
- Planning and execution of the IT consolidation of two locations for 170 users
- Introduction of automated penetration testing with Pentera
- Coaching and mentoring the team in agile methods & project management
- Operational support in day-to-day business: administration, incident & change management
- Management of external service providers and assurance of the quality of outsourced IT services
- Responsibility for the IT budget incl. planning and controlling
- Direct reporting line to management with regular management reports on IT KPIs, budget and project status
Taher S.
Last position:
DevOps Engineer at Confidential
- Working with developers, security, and operations teams to align requirements
- Supporting product owners and development teams in using logging and monitoring solutions based on the Elastic Stack
- Developing and standardizing log schemas as well as defining practical standards for observability
- Designing and further developing logging architectures for complex, distributed multi-tenant environments
- Connecting application and infrastructure logs as well as security tools and metrics
- Optimizing data flows and modeling for analysis and reporting purposes
- Building automated infrastructures using Terraform/Terragrunt and Ansible
- Maintaining and further developing CI/CD pipelines in GitLab as well as automated development environments in Hetzner Robot
- Operating and automating Proxmox clusters including Ceph storage
- Setting up and operating Kubernetes (k3s) clusters on Fedora CoreOS including base services such as Vault, OpenLDAP, and HA Proxy
- Implementing security-critical infrastructures according to BSI baseline protection and securing existing systems
- Supporting the operation of solutions in cloud environments (including AWS)
- Working in agile teams using Scrum and Kanban
- Technologies/ applications: Elastic Stack (Elasticsearch, Logstash, Beats/Elastic Agent, Kibana), Terraform, Terragrunt, Ansible, GitLab CI/CD, GitOps, Proxmox, Proxmox Ceph, Kubernetes (k3s), OpenShift, Helm, Kustomize, Vault, OpenLDAP, HA Proxy, Hetzner Robot systems, AWS, Prometheus, Grafana, Syslog Linux/Windows, Docker, NGINX, Apache Security & Compliance (BSI baseline protection, SIEM/SOC)
Alexander W.
Last position:
Freelance Head of Development / Strategy Consultant at LabMaker GmbH
- Consulting on a wide range of open science hardware projects in the fields of electronics, mechatronics, and optoelectronics
- Comprehensive system analysis and DFM optimization of a novel open hardware miniaturized two-photon microscope
- Exchange with scientists from renowned academic institutions to align the customer’s work in the best possible way
- Production coordination with local and international partners for PCB assembly, CNC machining, and optics
- Process analysis for product design, production planning/execution, product lifecycle, and product data management
- Coaching employees from all departments on the requirements that complex technical products place on business processes
- Development of a comprehensive PLM & PDM concept tailored to the needs of development and manufacturing
- Initiating intensive and direct cross-departmental exchange to identify improvement potential
- Planning shopfloor layout improvements with the production team and supporting the implementation process
- Quick onboarding of two new English-speaking colleagues in technical product management and development
- Ad-hoc and in-depth training of employees in the use of software tools such as KiCad or Autodesk Inventor
- Consulting on long-term development into a scalable, even stronger partner for the open science hardware community
David P.
Last position:
IT Department Manager
- Client support, 2nd, 3rd level, server administration
- Project and process coordination
- Support of MS365 services
- Linux administration
- Provider management
Moshtaba H.
Last position:
IT Administrator at Generaldirektion Wasserstraßen und Schifffahrt (WSA-Ostsee)
- Support and maintenance of IT workstations
- Operating, administering, and installing physical and virtual servers
- Administering proxy, firewall, and antivirus solutions
- Administering network and infrastructure including data backup
- Assisting in planning replacements and renewals of IT systems
- Assisting in planning, coordinating, and implementing IT security measures
- Microsoft server operating systems Windows Server 2016/2019
- Central services: AD, GPO, DNS, DHCP, WSUS, SCCM
Discover over 15,000 top freelancers
Statistics of experts using Firewall
Aggregated from the professional profiles of matched freelancers.
Experience
17 years (Germany: 22 years)
Position duration
2 years (Germany: 2.2 years)
Positions per freelancer
10 (Germany: 15)
Top business areas
Information Technology, Project Management, Customer Service
Top industries
Information Technology, Manufacturing, Professional Services
Certification focus areas
Information Technology, Business Intelligence, Legal
Bachelor's degree or higher
77% (Germany: 75%)
Master's degree or higher
38% (Germany: 43%)
Doctorate
8% (Germany: 6%)
Certifications per freelancer
5
Most common languages
German, English, French
Speak two or more languages
92% (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 Hamburg 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 Hamburg 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 (92%)
- Manufacturing (54%)
- Professional Services (54%)
- Banking and Finance (38%)
- Healthcare (38%)
- Transportation (38%)
- Aerospace and Defense (31%)
- Automotive (31%)
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, block or inspect connections based on addresses, ports, applications, users and context. Companies use firewalls to protect office networks, data centres, cloud workloads, remote access services and internet-facing applications.
Firewall Ecosystem
Professionals work with network firewalls, web application firewalls, cloud-native controls and unified threat management platforms. Common environments include Palo Alto Networks, Fortinet, Cisco, Check Point, pfSense, OPNsense, AWS Network Firewall, Azure Firewall and Cloudflare. Strong expertise also covers routing, VPNs, DNS, proxies, segmentation, logging and identity-aware access.
Typical Deliverables
- Design network zones, trust boundaries and traffic flows
- Build secure rule bases for offices, data centres and cloud networks
- Configure site-to-site and remote-access VPNs
- Protect web applications with inspection and filtering policies
- Connect alerts to SIEM, monitoring and incident response workflows
When Specialists Help
Companies bring in freelance firewall specialists during network migrations, cloud adoption, security audits and major infrastructure changes. They can replace outdated appliances, reduce overly broad rules, investigate blocked traffic or prepare environments for a merger. Hamburg businesses often need a professional who can combine remote configuration with clear on-site coordination across offices, logistics operations and industrial sites.
What Strong Experts Do
The best professionals translate business requirements into controlled, documented policies. They understand least privilege, network segmentation, high availability, certificate handling, NAT, routing and secure remote access. They test changes before rollout, keep rollback plans ready and explain why a rule exists instead of relying on copied configurations.
Selecting the Right Fit
Look for experience with the firewall vendor, network topology and hosting model used in the project. Ask for examples of migrations, policy clean-ups, incident investigations and cloud integrations rather than a list of products alone. For Hamburg teams, language, working-hour overlap and readiness for on-site workshops can matter when changes affect operations. A good specialist leaves behind readable rules, useful documentation, tested monitoring and a maintainable operating model.
Frequently asked questions
What clients ask us most about Firewall — answered in short.
A firewall filters and controls traffic between networks, systems and applications. Companies use it to limit unauthorised access, separate sensitive environments, secure remote connections and monitor suspicious activity.
A firewall primarily controls network traffic and connections, while a web application firewall focuses on HTTP requests sent to web applications. They address different layers and are often used together with endpoint protection, identity controls and vulnerability management.
A strong firewall specialist should understand routing, switching, VPNs, DNS, NAT, network segmentation and identity systems. Experience with cloud networking, SIEM integration, incident response and infrastructure automation is also valuable.
A firewall project needs a professional who has handled the same topology, vendor and risk level, not simply someone familiar with the product name. Migration planning, policy review, testing and rollback experience become especially important when systems must remain available.
Much firewall work can be completed remotely through controlled access, documented change processes and a separate test path. On-site workshops in Hamburg may still help with physical appliances, office connectivity, industrial networks or coordination with local teams.
Good firewall work is based on clear requirements, least-privilege rules, tested changes and useful documentation. Ask how the professional handles emergency access, unused rules, logging, high availability and rollback rather than judging quality by configuration complexity.
A firewall is an important control, but it cannot replace secure identities, patching, endpoint protection, backups, monitoring and staff awareness. Its value depends on a broader security design and on regular review of rules, exposed services and changing business needs.
A firewall specialist may work with Palo Alto Networks, Fortinet, Cisco, Check Point, pfSense, OPNsense, AWS Network Firewall or Azure Firewall. The right fit depends on the existing architecture, required integrations, operational model and the specialist’s practical experience with that environment.
The average hourly rate of freelancers in Hamburg, 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 Hamburg, Germany who have used Firewall in their recent projects, 77% hold at least a Bachelor's degree, 38% hold at least a Master's degree, and 8% hold a doctorate.
On average, freelancers in Hamburg, Germany who have used Firewall in their recent projects have 17 years of professional experience, with a single engagement typically lasting around 2 years.
The most common languages among freelancers in Hamburg, Germany who have used Firewall in their recent projects are German (100%), English (92%), and French (23%).
The most common industries among freelancers in Hamburg, Germany who have used Firewall in their recent projects are Information Technology (92%), Manufacturing (54%), and Professional Services (54%).
The most common business areas among freelancers in Hamburg, Germany who have used Firewall in their recent projects are Information Technology (100%), Project Management (69%), and Customer Service (62%).
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 
Munich 
Cologne 
Frankfurt 
Stuttgart 
Dusseldorf 
Dortmund 
Essen 
Nuremberg Request a free demo
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Philipp Thomaschewski
FRATCH CEO
