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
Mojtaba P.
Last position:
AI Voice / RAG / Automation Engineer & Technical Project Manager at Technolohit
- Technical design, prioritization, and hands-on implementation of AI automation, conversational AI, voice AI, and private AI solutions.
- Translation of business requirements into system architecture, conversation/workflow logic, APIs, data flows, and production-ready AI workflows.
- Development of backend and integration components with Python/FastAPI, PostgreSQL/pgvector, Redis, REST APIs, webhooks, and background jobs.
- Design and implementation of RAG architectures with local/private LLMs, embeddings, document processing, semantic search, and controlled access to company knowledge.
- Prompt engineering for LLM and voice/conversational AI applications; iterative optimization based on real processes, system responses, and quality requirements.
- Practical work with ElevenLabs and its APIs in a voice AI project, as well as technical evaluation and integration of voice AI components.
- Deployment and operation of Docker-based systems on Linux with Nginx, CI/CD, monitoring/logging, backup/restore, and reproducible deployment processes.
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.
Andreas N.
Last position:
Freelancer at Freelance work
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.
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
20 years (Germany: 22 years)
Position duration
2 years (Germany: 2.2 years)
Positions per freelancer
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: 43%)
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 29 Oct 2026.
Daily rate distribution
The chart shows how the daily rates of experts in this technology in Dortmund 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 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 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 (100%)
- Telecommunication (63%)
- Banking and Finance (50%)
- Healthcare (50%)
- Manufacturing (50%)
- Automotive (38%)
- Education (38%)
- Insurance (38%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
Enterprise Network Security and Traffic Inspection
A modern firewall serves as the core perimeter barrier and segmentation engine in business infrastructure. It regulates incoming and outgoing traffic through stateful packet inspection, deep packet inspection, and protocol analysis. Modern deployments rely on Next-Generation Firewall systems that integrate application control, identity verification, and advanced threat detection into a unified filtering mechanism.
Next-Generation Firewall Tooling and Ecosystems
- Hardware appliances and virtual instances from vendors like Palo Alto Networks, Fortinet FortiGate, and Check Point
- Cloud-native traffic filters in AWS, Microsoft Azure, and Google Cloud Platform
- Open-source stateful packet filtering with pfSense, OPNsense, and Linux iptables or nftables
- Centralized management consoles and policy orchestrators like Panorama or FortiManager
Typical Project Requirements and Deliverables
Specialists design security zoning concepts, implement zero trust network access policies, and establish encrypted site-to-site IPsec tunnels. Core projects include migrating legacy port-based rulesets into application-aware policies, fine-tuning intrusion prevention signatures, and configuring SSL decryption profiles without compromising corporate network throughput.
Infrastructure Demands in the Dortmund Area
Organizations across Dortmund and the broader Ruhr region range from expanding tech startups to established logistics and manufacturing enterprises. Securing automated operational technology networks against enterprise IT threats requires dedicated perimeter isolation. Specialists frequently handle hybrid architectures that connect local on-premises hardware with modern multi-cloud data centers.
Triggers for Engaging External Security Professionals
- Complex migrations between vendor platforms or hardware generations
- Post-incident rule remediation and perimeter hardening audits
- Integration of new production environments, remote locations, or cloud tenants
- High administrative overhead caused by redundant or conflicting legacy rules
Attributes of Senior Network Security Specialists
Elite professionals combine solid routing knowledge with a deep grasp of security mechanics. They interpret packet captures rapidly to resolve traffic blocks and write clean rule structures that scale over time. Their policies maintain strict isolation without breaking mission-critical business applications.
Frequently asked questions
Curious about Firewall? Here are the answers that come up again and again.
A dedicated specialist configures, maintains, and troubleshoots a firewall to safeguard internal networks. They define application-level policies, set up secure site-to-site VPN tunnels, configure intrusion prevention systems, and manage NAT configurations across distributed hardware and virtual environments.
A classic firewall relies on layer-four data, filtering traffic strictly by source, destination, port, and protocol. Modern NGFW systems inspect traffic through layer seven, analyzing application behaviors, decapsulating encrypted packets, and applying integrated threat intelligence to block advanced cyber attacks.
Beyond native firewall vendor platforms like Palo Alto Networks or Fortinet, professionals must understand enterprise routing protocols such as BGP and OSPF. They typically possess strong skills in SIEM logging, public cloud networking, Wireshark packet analysis, and automation tooling like Ansible or Terraform.
Complex migrations between competing firewall vendors or the consolidation of thousands of overlapping historical rules require senior insight. High-stakes tasks such as configuring line-rate SSL decryption, zero-trust segmentation in hybrid clouds, and real-time incident containment also depend on extensive hands-on experience.
Most policy auditing, rule refactoring, and cloud firewall implementations are performed remotely. However, physical hardware rollouts, rack installations, or data center cabling across facilities in Dortmund often benefit from occasional on-site days during the initial deployment phase.
A cloud firewall scales dynamically and integrates directly into provider APIs, securing serverless components and microservices. Physical appliances excel at high-throughput edge inspection, hardware-accelerated processing, and protecting legacy systems within corporate offices and localized production plants.
Enterprise IT environments in Dortmund often conduct technical operations in English, while coordination with internal network and compliance teams frequently requires German. A professional comfortable working in both languages ensures that documentation and firewall governance policies integrate smoothly.
High-quality firewall administration is visible through clear naming conventions, low rule counts, explicit change-management logs, and the total absence of overly permissive any-any statements. Secure implementations restrict traffic strictly by verified user identity and explicit application signatures.
The average hourly rate of freelancers in Dortmund, Germany who have used Firewall in their recent projects is 91 €, which corresponds to a daily rate of about 728 € 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 20 years of professional experience, with a single engagement typically lasting around 2 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 (13%).
The most common industries among freelancers in Dortmund, Germany who have used Firewall in their recent projects are Information Technology (100%), Telecommunication (63%), and Banking and Finance (50%).
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 (75%).
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 
Essen 
Nuremberg Request a free demo
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Philipp Thomaschewski
FRATCH CEO
