Token Ring Experts in Germany
matched in minutes from over 15,000 CVs with the power of AIHire experts who maintain legacy IBM Token Ring infrastructures, manage IEEE 802.5 bridging, and execute orderly migrations to modern Ethernet networks, matched fast and precisely with vetted, available freelancers.
Meet FRATCH Experts in Germany, who have recently used Token Ring
Silvia B.
Last position:
Business Consultant - Product Management Banking at Aareal Bank AG
- Focus on optimizing and further developing the internal customer EBICS application
- Functional and technical consulting for Aareal First Financial Solutions AG on EBICS standard products and applications in the areas of operations and further development, as well as project-related communication with external development partners and the product manufacturer to implement the corresponding technical optimizations
- As the functional coordinator, providing advice on content-related and regulatory requirements as well as technical prerequisites and requirements, and bringing these together at the functional level
- Consulting on the use of EBICS formats
- Reviewing the current EBICS standard for optimization and further development potential
- Analyzing the current state to identify development potential and deriving appropriate recommendations for action while considering regulatory requirements
- Conducting EBICS tests throughout the project
- Functional responsibility for requirements management and, in this context, recording and documenting requirements for such tests
- Designing a functional and sustainable test management system
- Conducting and evaluating tests
- Consulting on sustainable quality assurance and audits
- Project language: German and English
- Tools/Methods: MS Project, MS Office, MS Visio, TestRail, Confluence, Jira, Business Logics Bankkrecher, Business Logics Test Data Generator, Business Logics Banking Tool, Business Logics Test System, DBEAVER, Squirrel, Unix Virtual Machines, WinSCP, Kitty, Putty, various Aareal Bank products, Online Banking Portal, Aareal Sign, core banking system, SAP Blue Eagle, SAP RE-FX, Aareon Wodis Sigma, Haufe Real Estate Wowinex, GAP Group Immotion, UTS Karthago, SAP IS-U/Waste, SIV kVASy, various EBICS clients
Robert K.
Last position:
Interim Manager | Group Leader in the IT Operations & Digitalization Division "Databases, Operations & Support" (DOS) at Landwirtschaftliche RentenBank
- Technical leadership and further development of a team of 28 IT staff (internal & external) in the areas HelpDesk/HelpLine, RHEL (Red Hat), MUREX (trading system & applications), SAP basis operations
- Managing external service providers (including FI-TS for SAP basis operations)
- Personnel, resource and budget planning for the IT department and projects
- Introducing and establishing regular communication formats (weekly status meetings, team and cross-department meetings)
- Ensuring application operations in a hybrid environment (Windows/Linux with database and web/application servers)
- Supporting transformation projects to modernize the application landscape (e.g. DevOps approaches)
- Setting up and implementing a digital IT procurement for hardware & software (e.g. with DELL)
- Developing and managing the "IT Operations DOS" department based on corporate strategy
- Preparing management reports & decision papers on IT projects, optimization potential and automation opportunities
- Representing the department in the advisory boards of the Rentenbank and ensuring regulatory compliance (BaFin §44, GDPR, BSI, MaRisk)
Pierre G.
Last position:
Ansible Automation, Windows Third Level Support at DB InfraGO AG
- PRISMA project
- Ansible automation
- Windows third-level support for Windows NT, Windows 2000, Windows 2013, Windows 2016, Windows 2019
Ulf H.
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
Daniel K.
Last position:
Project planning and implementation of a 95 kWp PV system at Asset management company
- Analysis of technical and economic feasibility
- Creation of a detailed project plan including time and resource management
- Requesting and evaluating offers, selecting components, and managing suppliers
- Coordination of all involved trades (e.g. electricians, installation companies)
- Monitoring the construction work and ensuring deadlines, budgets, and quality standards are met
- Acceptance and commissioning of the PV system including documentation
- After project completion: optimizing monitoring and supporting grid connection
Oliver O.
Last position:
Embedded Software Architect at Automotive supplier
Stellar SR6 G7 line, 32-bit Arm® Cortex®-R52+ MCU.
- MISRA-C, C99, Greenhills ARM compiler
- Dassault AUTOSAR Builder
- EB Tresos
- Sparx Enterprise Architect 16.1
- VS Code
- Python xml, lxml, NumPy and Pandas
ISO 26262, ISO 21434, hypervisor, key management, HSM. Tooling & automation. LieberLieber LemonTree + Sparx EA. Jira, Confluence, SharePoint. Git/Github. DevOps through Jenkins & Conan.
Mustafa K.
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.
Andreas G.
Last position:
Senior Fullstack .NET (Core) & Angular Developer at IT Service Provider
- Supporting several agile teams in the new product development of an enterprise CRM and ERP application
- Web frontend development with Angular 17–21 (microfrontends, Domain-Driven Design, MDB-Bootstrap)
- Backend development with C# and .NET 7–10, MongoDB, MassTransit, RabbitMQ, Entity Framework Core, ElasticSearch (microservices, DDD)
- Technical feature design for assigned tasks
- Technical architecture design including forward-looking planning of AI-supported extension options
- Proof-of-concept implementation of AI-supported workflows with n8n and a locally hosted LLM (Ollama)
- Coordination with stakeholders and Product Owners, support with sprint planning
Result: Delivery of production-ready microservices and frontend modules in agile sprint cycles.
Environment: .NET 7–10 · Angular 17–21 · C# · TypeScript · OpenAPI · Microfrontends · DDD · Kubernetes · Docker · Helm · MS SQL Server · PostgreSQL · MongoDB · MassTransit · RabbitMQ · EF Core · ElasticSearch · Kibana · Azure DevOps · KeyCloak · n8n · Ollama
Luca P.
Last position:
ERP Program Manager at Fiserv
The customer is undergoing a comprehensive transformation. All SAP ECC landscapes worldwide are being migrated to SAP S/4HANA, with the goal of introducing a standard template worldwide.
The program also includes the “RISE with SAP” migration and modernization program, which may involve migrating the landscapes of selected country installations to the SAP Private Cloud.
On the stakeholder side, the program reporting line extends to the company’s executive board and that of the implementation partner.
Fiserv Germany’s ERP landscape currently includes several non-standard SAP tools and applications that extend the functionality of the ECC environment and can often be integrated into downstream systems. As part of the transition to SAP S/4HANA, it is essential to assess the core functionality, integration points and future viability of these applications in order to determine their alignment with the target architecture.
The focus of the work is on providing expert advice and assessment to define the scope, strategy and roadmap for transitioning Fiserv Germany’s SAP ECC system to SAP S/4HANA.
The recommended best practices from SAP are followed and a structured approach is used to ensure a smooth transition with minimal disruption while maximizing business value.
This assessment forms the basis for a successful SAP S/4HANA transformation and ensures alignment with industry best practices, regulatory compliance and future scalability.
Migration Strategy Definition – assessment of available transition approaches based on business objectives, technical feasibility and SAP Best Practices.
Technical Readiness Assessment – conducting a system analysis to assess compatibility, custom code impact, data volume management, integration points and infrastructure readiness for SAP S/4HANA.
Business Process Impact Analysis – reviewing the latest business process documentation to define the scope and effort required to implement the necessary functions in SAP S/4HANA and to identify opportunities for process optimization.
Roadmap for Non-SAP Systems and Applications – assessment of third-party and legacy applications regarding their integration with SAP S/4HANA and recommendation of consolidation, migration or replacement strategies.
Deployment & Implementation Planning – defining a phased approach for implementation, including project schedules, risk mitigation strategies and key milestones aligned with business priorities.
This transformation takes place in phases: the Discovery phase leads to the Explore phase, which is followed by the Design phase and finally implementation.
Program management
Change management
Requirements management
Transition management
Stakeholder management
Risk management
Comprehensive coordination
Sami B.
Last position:
German Customer (Pharma Supply-Chain Sector)
- Integration of a FortiManager into the existing FortiGate firewall infrastructure to centralize and optimize firewall management.
Ensar Y.
Last position:
Service Manager Microsoft Cloud Services (ITIL) at Industry (technology group)
- Took on the role of Service Manager for Microsoft 365 and Azure services
- Coordinated service providers in the areas of collaboration and security (Exchange Online, Teams, Azure AD)
- Monitored and optimized SLA-compliant operating processes (Incident, Change, Problem)
- Worked closely with internal IT management and integrated ITIL processes into Azure DevOps
- Microsoft Azure, Exchange Online, Teams, Azure AD, ITIL v4, Azure DevOps, Power BI, ServiceNow
Andreas W.
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
Khyser M.
Last position:
Life Cycle Infrastructure Network Analyst at Hays AG
- On-site implementation and upgrade of the life cycle infrastructure for a global partner of a Hays customer.
- On-site implementation for international locations in APAC & AMER.
- Executed on-site life cycle infrastructure upgrades for sites IN-NDA, IN-MOX, US-CAX, US-MOT, CN-YAN, and IN-MOR according to customer requirements. This included project management, administration, network design, optimization, as well as planning and deploying redundant OM4 and OS2 fiber and redundant power systems.
- Designed, upgraded, and migrated data centers for the above sites, including international on-site travel to the USA and India.
- Led and oversaw the network team, providing remote and on-site support for cabling work.
- Created network documentation, including L2 and L3 Visio drawings, IP address planning, network patch plans, power plans, bayface layouts, access point layouts, ISP carrier layouts, data center planning, downtime planning and scheduling, hardware checklists, network device configuration, implementation, test plans, and proposal evaluations.
- Extensive experience with Cisco hardware, including switches (9200, 9300, 9400, 4500, 3850, and 2960 series), WLC (9800, 5505, 3504, and 2800 series APs), ASA (55xx series), and NG Firepower (1010, 1120).
- Maintained documentation, including NetBox, PRTG monitoring, RADIUS, DNS, DHCP, and KX handover sessions, troubleshooting & trainings.
- Life Cycle Technical Guide & Control
Silke W.
Last position:
Head of Project Management and Consultancy at Systemtechnik GmbH
- Planning of projects and consulting services: professional, technical and commercial, focusing on transformation for public transport
- Identification and assessment of project risks with development of measures and recommendations for risk minimization and avoidance
- Evaluation of projects and reporting
- Execution of projects and delivery of consulting services on time, with required quality and within budget
- Project, hardware and consulting services forecasting
- Disciplinary and professional staff management
- Team development and coaching
- Resource planning across various locations
- Stakeholder management
- Client management with service and support
- Development of contingency plans
Dieter M.
Last position:
Software Engineer at Hamma UWT
Added a safety shutdown in the MISCEO product firmware when a certain delivery limit (cap) was reached.
Familiarized myself with the product and its firmware (C code and functionality).
Identified the code parts needed for the change.
Implemented the extension.
Tested and documented (only in the source code).
Target platform: embedded firmware without an operating system.
Tools: Eclipse, C.
Discover over 15,000 top freelancers
Statistics of experts using Token Ring
Aggregated from the professional profiles of matched freelancers.
Experience
36 years
Position duration
1.7 years
Positions per freelancer
26
Top business areas
Information Technology, Project Management, Operations
Top industries
Information Technology, Telecommunication, Banking and Finance
Certification focus areas
Information Technology, Operations, Project Management
Bachelor's degree or higher
67%
Master's degree or higher
33%
Doctorate
11%
Certifications per freelancer
4
Most common languages
German, English, French
Speak two or more languages
100%
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 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 Token Ring
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.
Token Ring 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 (94%)
- Telecommunication (78%)
- Banking and Finance (67%)
- Manufacturing (61%)
- Automotive (56%)
- Professional Services (50%)
- Healthcare (44%)
- Government and Administration (44%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
Deterministic Local Area Networking
Token Ring is a local area network protocol standardized under IEEE 802.5. Developed primarily by IBM, it uses a token-passing topology to manage access over twisted pair cabling. This architecture guarantees predictable packet delivery without data collisions across legacy communication rings.
Core Architecture and Hardware
Modern infrastructure initiatives involving this protocol focus on specialized hardware maintenance. Specialists manage Multistation Access Units, Controlled Access Units, dedicated network interface cards, and source-route bridging. Understanding ring speeds of 4 Mbps and 16 Mbps remains essential for troubleshooting legacy frames.
Typical Maintenance and Migration Tasks
- Diagnosing beaconing rings and isolating physical wire faults
- Configuring IBM MAU and CAU switching infrastructure
- Setting up source-route bridging to enterprise backbones
- Migrating mission-critical systems safely to switched Ethernet
- Preserving SNA and mainframe connectivity during network transitions
Industrial Environments in Germany
In Germany, legacy ring networks persist inside automotive plants, industrial control rooms, and rail transit systems where continuous uptime is mandatory. Industrial facilities rely on independent specialists who understand both original fieldbus communication layers and deterministic data exchange during ongoing plant upgrades.
Migration to Switched Ethernet
Replacing legacy ring architecture requires methodical planning. Professionals replace token protocols with modern Ethernet using encapsulation techniques or dedicated protocol converters. They maintain mainframe sessions and critical telemetry links while eliminating obsolete physical cabling without plant interruptions.
Evaluating Domain Specialists
Qualified specialists demonstrate deep familiarity with IBM mainframe architectures, Systems Network Architecture protocols, and diagnostic analyzers. They possess hands-on troubleshooting experience with physical media filters, patch panels, and copper cabling alongside modern TCP/IP interconnections.
Frequently asked questions
Not sure where to start with Token Ring? These answers cover the essentials.
Token Ring is rarely implemented in new rollouts but remains critical in long-lived operational environments. Organizations use it to maintain legacy industrial manufacturing lines, railway telemetry networks, and legacy mainframe links that require deterministic communication without packet collisions.
Standard Ethernet uses collision detection where stations compete for medium access. In contrast, IEEE 802.5 employs a token-passing mechanism where only the station holding the circulating token can transmit, creating a deterministic network that prevents packet collisions entirely.
A qualified Token Ring specialist should possess thorough knowledge of IBM Systems Network Architecture, source-route transparent bridging, and mainframe protocols. Experience with modern switched Ethernet, protocol analyzers, and cable conversion hardware is equally vital for executing structured transitions.
Facilities throughout Germany often operate long-lifecycle machinery in automotive assembly or transit control where altering field networks risks line shutdowns. Maintaining Token Ring hardware allows operators to run validated equipment until planned plant-wide retrofits occur.
Yes, experienced specialists migrate IBM Token Ring segments incrementally by deploying source-route bridging or protocol encapsulation gateways. This allows individual endpoints or servers to cut over to modern switches while preserving continuous communication across active ring segments.
Troubleshooting a malfunctioning Token Ring network requires specialized protocol analyzers, time-domain reflectometers for STP or UTP copper cabling, and hardware insertion monitors. Specialists analyze beacon frames to isolate failing lobes or degraded Multistation Access Units directly on the physical ring.
While configuration planning and frame analysis can occur remotely, diagnosing physical faults in a Token Ring deployment often requires on-site presence. Handling physical MAUs, replacing interface cards, and recabling distribution panels usually demand hands-on work in local facilities across Germany.
Look for verified project work involving legacy IBM mainframe networks, MAU hardware maintenance, and protocol conversion projects. A capable Token Ring professional easily explains beaconing resolution, ring insertion phases, and deterministic timing constraints without generic networking terminology.
The average hourly rate of freelancers in Germany who have used Token Ring in their recent projects is 112 €, which corresponds to a daily rate of about 899 € based on an 8-hour working day.
Of the freelancers in Germany who have used Token Ring in their recent projects, 67% hold at least a Bachelor's degree, 33% hold at least a Master's degree, and 11% hold a doctorate.
On average, freelancers in Germany who have used Token Ring in their recent projects have 36 years of professional experience, with a single engagement typically lasting around 1.7 years.
The most common languages among freelancers in Germany who have used Token Ring in their recent projects are German (100%), English (100%), and French (33%).
The most common industries among freelancers in Germany who have used Token Ring in their recent projects are Information Technology (94%), Telecommunication (78%), and Banking and Finance (67%).
The most common business areas among freelancers in Germany who have used Token Ring in their recent projects are Information Technology (100%), Project Management (100%), and Operations (78%).
Main locations of FRATCH Experts, who have recently used Token Ring
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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FRATCH CEO
