Firewall Experts in Dortmund
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Meet FRATCH Experts in Dortmund, who have recently used Firewall
Yasin Y.
Last position:
Enterprise Architect at Bundesagentur für Arbeit
Task:
- Design and build a proof of concept (PoC) for a future-proof virtualization platform, taking secure system architectures into account
- Assess the current state of existing infrastructures and develop selection and evaluation criteria for the right OS virtualization platform
- Carry out the requirements analysis and then create and prioritize tickets in the ticket system
- Complete and continuously update a tool evaluation matrix based on PoC results
- Support team knowledge building through clear documentation of the approach and results in Confluence
- Enterprise analysis of existing hardware (creating different BoMs)
Technologies: Vmware, Vmware Aria Operations, Osism, Canonical OpenStack, FishOs, Linux, Terraform, Ansible, Confluence, Alma
Arkadius S.
Last position:
AWS Pricing Platform / API & Integration Architecture at Porsche Digital
Development and evolutionary further development of a highly available, cloud-native microservice and integration architecture for dealer and retail processes in the Porsche Car Configurator.
Responsibilities
- Development of Java-/Kotlin-based backend, API, and integration components (Spring Boot)
- Integration of internal and external systems via REST/OpenAPI, GraphQL, Apache Kafka, and AWS SQS (synchronous and asynchronous)
- Implementation of stable, high-performance communication and data flows in a cloud-native platform architecture
- Processing of structured data formats (JSON, Protobuf, GraphQL schemas) based on existing API patterns
- Performance optimization of distributed microservices with reduced response times and higher operational stability
- Technical tests (unit, integration, and API tests) as well as error analysis in production-like environments
- AWS Infrastructure as Code with Terraform and AWS CDK
- CI/CD automation (build, test, and deployment pipelines) with GitHub Actions
- AI-supported feature implementation (GitHub Copilot Agent)
Label: Kotlin, Java 25, Spring Boot 4, Protobuf, TypeScript, AWS, Terraform, CDK, Apache Kafka, AWS SQS, REST/OpenAPI, GraphQL, JSON, PostgreSQL, Docker, GitHub Actions, Maven, Gradle, JUnit, Mockito, Testcontainers
Aladdin A.
Last position:
Technical Consultant at NFON
- Presentations and workshops regarding different VOIP products and technologies
- Design of VOIP and network solutions from core to premium solutions and necessary non-standard solutions
- Processing of tenders
- Development of VOIP and network technical implementation of customer requirements
- Implement and configure different UC products on cloud
Mohamad A.
Last position:
Systems Engineer for Network Security at Bechtle AG
- SD-WAN solution by Aruba – Swiss energy company (330 sites): design and implementation of an SD-WAN branch solution with Aruba 9004 gateways, encrypted overlay, policy-based routing, WAN load balancing, and centralized management via Aruba Central.
- LAN/WLAN & security – schools in Germany (9 sites): deployment of Aruba switches & AP-505, FortiGate 80F firewalls; setup of Checkmk monitoring, incident and change management, and secure admin access (BeyondTrust).
- Multi-site security – energy billing company (20 sites): deployment of a complete Fortinet solution (FortiGate HA cluster, FortiSwitch PoE, FortiAP), IPsec remote-access VPN via FortiClient, centralized management via FortiCloud, IntraID authentication, operations and incident management.
- Data center migration – German client: migration of data center switches (Mellanox), firewall cluster, and OfficeConnect switches to a new data center; securing configurations, implementing HA designs, testing, monitoring, and coordinated change and incident processes. Setup of two new 6300 M VSX clustered switches.
- Data center security – university hospital: implementation of a high-availability FortiGate 400F firewall cluster across three data centers; security policy design, operational support, and change/incident management.
- Enterprise campus & network access control – manufacturing company in Germany: introduction of Aruba ClearPass NAC, setup of a VSX-based switching architecture, secure WLAN access with MPSK, and integration into existing networks.
- EU client (Germany & Poland) – Sophos firewalls: operations, incident and change management of Sophos firewalls including IPsec VPN; troubleshooting and ongoing optimization of security configurations.
- Network modernization – pharmacy client in Germany: design and rollout of core and access switching (Mellanox, Aruba Instant On), migration from Sophos to Fortinet firewalls, network segmentation, and security hardening.
Yoav N.
Last position:
Freelance Software Architect at Freelance Consultant
- Various small consultations, e.g. concepts and arcitectures.
- Updating my Matlab, Linux, IPv6, Cyber-Security, C++ (up to 23) and Python skills.
Andreas N.
Last position:
Freelancer at Freelance Work
Henning P.
Last position:
Siemens
- Developed a reporting API with RESTful services and Spring Boot
- LDAP integration
- Migrated services to AWS
- Bootstrap
- Frontend development with Angular 14
- JBoss
- DynamoDB
- S3
- Athena
Discover over 15,000 top freelancers
Statistics of experts using Firewall
Aggregated from the professional profiles of matched freelancers.
Experience
21 years (Germany: 22 years)
Position duration
2.1 years (Germany: 2.2 years)
Positions per freelancer
17 (Germany: 15)
Top business areas
Information Technology, Product Development, Project Management
Top industries
Information Technology, Telecommunication, Banking and Finance
Certification focus areas
Information Technology, Quality Assurance, Logistics
Bachelor's degree or higher
83% (Germany: 75%)
Master's degree or higher
67% (Germany: 41%)
Certifications per freelancer
4 (Germany: 5)
Most common languages
German, English, Arabic
Speak two or more languages
100% (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 Dortmund 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 Dortmund 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 (100%)
- Telecommunication (71%)
- Banking and Finance (57%)
- Healthcare (57%)
- Education (43%)
- Insurance (43%)
- Manufacturing (43%)
- Aerospace and Defense (29%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
Access control
A firewall controls which traffic can enter, leave, or move inside a network. It is used to protect offices, cloud workloads, remote access, and internet-facing services. Strong professionals translate security policy into rules that are strict enough to reduce risk and practical enough to keep work flowing.
Common setups
- Network segmentation for office and plant networks
- VPN access and remote user protection
- Web application firewall tuning for public apps
- Rule cleanup after mergers, audits, or outages
- Migration between on-premises and cloud firewalls
Tools and stacks
Firewall work often spans FortiGate, Palo Alto Networks, Cisco ASA, Check Point, pfSense, and cloud controls in AWS, Azure, or GCP. In many projects, the specialist also works with IDS/IPS, NAT, routing, certificates, and logging systems. Good delivery means the firewall fits the wider network, not just a single device.
When to hire
Companies bring in freelance firewall experts when a ruleset has become hard to manage, a new site needs secure connectivity, or a security review has raised gaps. This is also common during product launches, cloud moves, and incident recovery. In Dortmund, teams often need support that can work with local IT staff on site or remotely with clear documentation.
Strong skills
- Reading traffic flows and trust boundaries
- Designing least-privilege rule sets
- Troubleshooting blocked services and latency
- Explaining changes in plain language
- Keeping logs, backups, and rollback plans in order
Delivery quality
A strong firewall professional leaves behind a stable policy, a clean rule structure, and clear change notes. They test before release, review shadowed or unused rules, and make sure monitoring is in place. For teams in Dortmund, that clarity matters when security and operations must stay aligned.
Frequently asked questions
Curious about Firewall? Here are the answers that come up again and again.
A strong Firewall specialist designs and maintains traffic rules that protect networks, applications, and remote access. The work usually includes policy review, rule creation, NAT, VPN setup, logging, and troubleshooting blocked connections. Good specialists also remove outdated rules so the setup stays understandable.
A Firewall protects network traffic at the perimeter or between internal zones, while a WAF focuses on HTTP and application-layer attacks. Many teams use both, because they solve different problems. If the issue is who can connect to what, a firewall is the right layer to start with.
A Firewall project often involves FortiGate, Palo Alto Networks, Cisco ASA, Check Point, or pfSense. In cloud work, the specialist may also deal with AWS, Azure, or GCP security controls. The right choice depends on your network design, not just on brand preference.
A good Firewall professional usually understands routing, subnetting, VPNs, DNS, certificates, and basic Linux or Windows networking. Log analysis and incident response are also important, because blocked traffic is only one part of the picture. Without these skills, rule changes are harder to verify.
A Firewall task can be simple, like a rule review, or complex, like a multi-site redesign. Simple change work may need only a focused specialist, while migration and segmentation projects need someone who has handled larger network environments before. The key is matching the scope to the risk.
Yes, most Firewall work can be done remotely if the network team can provide access, diagrams, and change windows. On-site help is useful when there is hardware replacement, cabling, or a sensitive cutover. In Dortmund, many companies prefer a mix of remote planning and short on-site sessions.
A good Firewall specialist can explain why each rule exists, how traffic is expected to flow, and how changes will be rolled back if needed. Look for clear documentation, testing discipline, and a methodical approach to cleanup. If the person speaks only in product names and not in network logic, that is a warning sign.
Before a Firewall engagement, gather network diagrams, current rule exports, VPN details, and a list of affected services. Also note any outages, audit findings, or application deadlines that shape the work. Clear input helps the specialist make safe changes faster.
The average hourly rate of freelancers in Dortmund, Germany who have used Firewall in their recent projects is 89 €, which corresponds to a daily rate of about 710 € based on an 8-hour working day.
Of the freelancers in Dortmund, Germany who have used Firewall in their recent projects, 83% hold at least a Bachelor's degree and 67% hold at least a Master's degree.
On average, freelancers in Dortmund, Germany who have used Firewall in their recent projects have 21 years of professional experience, with a single engagement typically lasting around 2.1 years.
The most common languages among freelancers in Dortmund, Germany who have used Firewall in their recent projects are German (100%), English (100%), and Arabic (14%).
The most common industries among freelancers in Dortmund, Germany who have used Firewall in their recent projects are Information Technology (100%), Telecommunication (71%), and Banking and Finance (57%).
The most common business areas among freelancers in Dortmund, Germany who have used Firewall in their recent projects are Information Technology (100%), Product Development (100%), and Project Management (71%).
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 
Dusseldorf 
Nuremberg Request a free demo
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Philipp Thomaschewski
FRATCH CEO
