X.25 Experts in Germany
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Meet FRATCH Experts in Germany, who have recently used X.25
Ulf Haase
Last position:
Configuration Manager (Interim) at In-house Development
- Requirements analysis and replacement of local SharePoint as CMDB with open source NetBox to prepare for deploying Cisco ACI (SD-WAN) with Microsoft Azure
- Coordination with systems like Checkmk and Grasp
- Introduction and coordination of cmdbsyncer as CMDB data hub; further development of the syncer with Kuhn & Ruess GmbH
- Implementation of SNMPv3 on AIX LPAR/VIO, Linux, Windows, SAN/storage, network components (Cisco switches, F5 load balancers, Palo Alto and CheckPoint firewalls, iLO boards)
- Deployment and further development of the network scanner JDisc in cooperation with the vendor (Utimaco HSMs, Linux detection)
- Integration of NetBox, JDisc, and cmdbsyncer into the infrastructure using Docker containers
- End-user training: preparation, creation of materials, and delivery
- Creation of data flow and network diagrams
- Population and planning of IPv4/IPv6 with NetBox including VLAN import
- Dual-stack setup of servers and clients with IPv4 and IPv6
- Connection of REST interfaces for Checkmk, JDisc, vSphere, HMC, i-doit, NetBox Software: Confluence, Jira, MS Office 365, Teams, i-doit, NetBox, JDisc, cmdbsyncer, DB Visualizer, vSphere, HMC
Mustafa Kederoglu
Last position:
Senior Network Design and Engineer at Helaba
Designed and specified the technical network integration of a new business-critical application system (MUREX) in the capital markets area in a complex interface and outsourcing environment.
Created component specifications, a catalog of measures and an implementation plan.
Ensured proper integration of the developed results in line with the bank’s framework: IT compliance, IT security, change and release management.
Selected and integrated a new service provider for the bank; moved critical bank applications to the provider.
Designed, implemented and supported the new Cisco network and Fortinet security setup at the service provider data center.
Acted as technical interface between the bank, service providers and consulting partners.
Supported and further developed the network and security infrastructure (clients, servers, networks); performed error analysis and implemented solutions within agreed service levels.
Analyzed and diagnosed all security and network failures, glitches and malfunctions.
Initiated continuous improvements to ensure efficient resource use and acceptable response times for users.
Provided network support in a financial services organization and prepared operational changes on production banking network infrastructure for both large and small projects within strict change management discipline.
Designed, defined, tested, governed and improved engineering standards.
Performed the role of network architect for medium to large projects involving team resources.
André Görst
Last position:
IT Consulting Project Management / Engineering Subproject Management at T-Systems (on assignment for government agencies)
- Projects for federal networks (NdB).
- CR management, EoL change requests, design and documentation according to ITSCM.
- Data center planning.
- Project management and engineering subproject management.
- Software development for virtual server environments according to BSI.
Georg Danebrock
Last position:
Senior Project Manager at Apleona GmbH
- Project review, restructuring, and PM for the migration of a total of 12,000 Windows workplace systems (650 applications) from SCCM and Empirum/Matrix42 to MS-Intune after a merger.
- Took over a heavily delayed / not ideally managed project in the role of the "firefighter".
- Completely revised and adjusted/updated the planning of the customer and the involved service provider.
- Introduced planning baselining as well as tracking/mitigation of current risks.
- Introduced an efficient, partially automated planning/reporting interface between MS Project Planning (service provider) and Jira (customer).
- Restructured meetings to increase efficiency and remove redundant appointments.
- Completed the analysis and design phase and created base data for migrations from heterogeneous systems of the two merged companies.
- Started the User Acceptance Test (UAT).
- Technologies: MS Autopilot, Zero Touch.
Andreas Wißkirchen
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
Mike Barthel
Last position:
System and Endpoint Hardening at CLAAS
- Evaluating and assessing the current state
- Preparing and conducting security audits
- Vulnerability characterization and risk analysis
- Assessing, coordinating and transforming identified vulnerabilities into target states
- Coordinating stakeholder interests
- Developing and implementing IT security strategy for OT and IoT (continuous risk assessment and risk management, awareness, multi-layered security solutions, regular security audits, access restrictions)
- Organizational and technical documentation, presentations and workshops
- Skills: Qualys, Splunk, Nessus, QRadar, National Vulnerability Database (NVD / NIST), Open Worldwide Application Security Project (OWASP), OT, CERT/CC, BSI IT-Grundschutz catalogs, ISO 27001, MITRE ATT&CK, Center for Internet Security (CIS), GitHub, Active Directory, PowerShell, Symantec Endpoint Protection, Microsoft Azure and Office365 App Security, ITSM
Dirk Eichler
Last position:
Senior IT Engineer at IT service provider
- Planning, concept design, re-design
- Pre-sales support
- Project support according to PRINCE2
- Setup of a CMDB
- Implementation of communication processes
Discover over 15,000 top freelancers
Statistics of experts using X.25
Aggregated from the professional profiles of matched freelancers.
Experience
38 years
Position duration
2.2 years
Positions per freelancer
24
Top business areas
Information Technology, Operations, Project Management
Top industries
Information Technology, Telecommunication, Energy
Certification focus areas
Information Technology, Project Management, Product Development
Bachelor's degree or higher
40%
Master's degree or higher
20%
Doctorate
20%
Certifications per freelancer
9
Most common languages
German, English, French
Speak two or more languages
100%
Based on our profile pool as of 30 Aug 2026.
Daily rate distribution
The chart shows how the daily rates of freelancers in this technology in Germany 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 Germany using X.25
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 30 Aug 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
About the technology
What X.25 is
X.25 is a packet-switched networking protocol for reliable data exchange over public or private wide-area links. It was built for terminals, host systems, and routers that need controlled connectivity, clear addressing, and predictable delivery on older telecom networks.
Where it still fits
- Legacy banking and payment links
- Industrial and transport control systems
- Mainframe, terminal, and host connectivity
- Network gateways that interconnect old and new systems
X.25 still appears where long-lived equipment, carrier circuits, or regulated environments depend on stable packet transport. In Germany, specialists often support cross-border links, site-to-site connectivity, and migrations away from older packet networks without interrupting operations.
Skills that matter
Strong X.25 professionals understand logical channels, packet formats, addressing, and error handling. They also know how X.25 sits on top of the physical and link layers, and how PADs, switches, and access circuits affect latency and reliability.
Tooling and ecosystem
Common work involves network analyzers, carrier documentation, terminal access tools, and router or switch configuration for X.25 interfaces. Depending on the environment, specialists may also work with Frame Relay or TCP/IP gateways to keep legacy applications reachable while the network changes.
When companies bring help
Companies usually look for freelance expertise when a line is unstable, a legacy application needs to stay online, or a migration has to be planned carefully. They also bring in specialists for audits, documentation cleanup, integration work, and coordination between telecom providers and internal IT teams.
What strong specialists deliver
A good X.25 expert does more than keep a connection alive. They trace packet flow, isolate interface faults, tune network settings, and explain risks in plain language. For Germany-based teams, they can also support remote reviews and on-site work when access to older hardware or telecom closets is needed.
Frequently asked questions
Everything clients usually want to know about X.25, in one place.
X.25 is used for reliable packet-switched communication on older wide-area networks. Companies still rely on it for terminal access, mainframe links, industrial systems, and other setups where legacy connectivity must stay stable. It often lives behind gateways or carrier circuits rather than in new greenfield builds.
X.25 is more focused on built-in error control and predictable delivery over unreliable lines. Frame Relay and TCP/IP are usually simpler and better suited to modern networks, but X.25 can still matter when older equipment or regulated workflows depend on it. A good specialist knows when to keep it, bridge it, or retire it.
X.25 projects often involve keeping a legacy service running, documenting an old network, or moving traffic to another protocol without downtime. They can also include gateway configuration, carrier coordination, and troubleshooting intermittent link problems. These are usually careful, operational tasks rather than quick feature work.
A strong X.25 specialist usually understands routing basics, serial and link-layer concepts, network troubleshooting, and telecom operations. Experience with PADs, terminal servers, Frame Relay, and TCP/IP gateways is often useful too. In older environments, mainframe or industrial networking knowledge can make a big difference.
X.25 work is rarely a task for someone learning on the job. Because the technology is older and the systems around it are often sensitive, you want someone who has handled live troubleshooting, migrations, or support in production environments. For simple documentation reviews, lighter experience may be enough, but active changes need proven hands-on work.
Much X.25 work can be done remotely if the specialist has logs, diagrams, and access to the right management tools. On-site support becomes useful when the issue sits in a telecom rack, a serial line, or equipment that is hard to reach from outside. In Germany, many teams combine remote analysis with a short on-site visit when needed.
Ask which versions, carrier setups, and gateway products the X.25 freelancer has worked with before. You should also ask how they handle troubleshooting, change windows, rollback plans, and communication with telecom providers. Clear answers here are a better sign than broad claims about general networking.
Look for someone who can explain addressing, virtual circuits, and packet flow in a clear way. A good X.25 expert should also describe past fixes, not just list tools, and should understand the risks of touching a live legacy network. Practical documentation and careful change management matter as much as technical knowledge.
The average hourly rate of freelancers in Germany who have used X.25 in their recent projects is 103 €, which corresponds to a daily rate of about 824 € based on an 8-hour working day.
Of the freelancers in Germany who have used X.25 in their recent projects, 40% hold at least a Bachelor's degree, 20% hold at least a Master's degree, and 20% hold a doctorate.
On average, freelancers in Germany who have used X.25 in their recent projects have 38 years of professional experience, with a single engagement typically lasting around 2.2 years.
The most common languages among freelancers in Germany who have used X.25 in their recent projects are German (100%), English (100%), and French (29%).
The most common industries among freelancers in Germany who have used X.25 in their recent projects are Information Technology (86%), Telecommunication (71%), and Energy (57%).
The most common business areas among freelancers in Germany who have used X.25 in their recent projects are Information Technology (100%), Operations (100%), and Project Management (100%).
Main locations of FRATCH Experts, who have recently used X.25
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 Leipzig Dortmund Essen Bremen Dresden Hanover Nuremberg Request a free demo
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Philipp Thomaschewski
FRATCH CEO
