OS/2 Experts in Germany
for critical legacy systems, matched quickly with vetted freelance professionalsHire experts who maintain OS/2 applications, support IBM OS/2 and OS/2 Warp environments, and connect legacy workloads with current infrastructure. FRATCH uses precise AI matching to help you find vetted, available freelancers quickly.
Meet FRATCH Experts in Germany, who have recently used OS/2
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
Jens R.
Last position:
Platform Architect & Senior Developer at Direct client, industrial measurement technology, medium-sized company
- Technical leadership across hardware, firmware, and software teams; scope: hardware/firmware team (4 people) and leadership group (5 people)
- Consolidated and documented a product family that had grown over more than 15 years and aligned it with CRA compliance — from the bare-metal I/O module to the cloud interface.
- Provided the most important customer product with the essential requirements and architecture documentation within two months — for a firmware landscape that had grown over more than 15 years. It now supports the customer’s modernization strategy.
- Established a monthly reporting line to the supervisory board and executive board within three months: nine meetings since 12/2025. The report itself is versioned and built from the CI pipeline; it is based on automatically collected activity and release data instead of assessments.
- Built a container-based CI/CD infrastructure from scratch: cross-compilation, host tests, and documentation builds in one continuous pipeline.
- Introduced declarative QA gates for DevOps and development artifacts — from the start using lefthook instead of pre-commit, executed in a dedicated container image.
Technologies used: arc42, req42, tpo42, docToolchain, PlantUML, ArchiMate, C4 model, ADR, C, C++ (GTest), CMake, Bare Metal (ARM Cortex-M3/M7), OCI containers, Jenkins, lefthook, Prometheus, Grafana, SBOM, CRA, OPC, SCADA, PLC integration, IPv6 migration, Zero Trust, Sociocracy 3.0, Cynefin
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
Peter J.
Last position:
Interim Teamlead at Somnomedics
- Interim Teamlead to setup a project with STM32 and NORA Bluetooth module.
- Customer is planning new hardware to replace existing hardware with Bluetooth communication instead cable connection.
- Project was already started but the requirements were not defined.
- System based on STM32 and Nora B106 CPU.
- Analyzing the existing available code base.
- Checking for possible solutions to get the project working.
- Defining the requirements.
- Applying some rules to improve the team communication.
- Working with the NRF tools to get the custom board based on NORA B106 (NRF5340) working.
- Implementation of a simple device communication by Bluetooth.
- Preparation of documentation.
- Leading communication meetings.
- Conducted discussions with customer.
- Tools used: JIRA, OneNote, Git, Confluence, Nordic NRF, Nora B106.
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
Michael F.
Last position:
DACHSER SE
- Support and consulting in the authorization environment and license optimization
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
Sascha J.
Last position:
Agile Coach & Partner at Agisolve GmbH – Pragmatic Agility® | Edler & Stiegler GmbH | CTN Consulting
- Create a product and service portfolio delivering a 360 degree approach to digital corporate sustainability covering KPI management, CSRD reporting and sustainable strategy
- Create vision and business case
- Onboard and align business partners, negotiate contracts
- Set up partner network as self-organized agile team
- Co-develop product and service portfolio
- Coordinate sales and marketing, go-to-market strategy and roadmap
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
Jürgen S.
Last position:
IT Consultant / Analyst / Developer / Tester / Support at Automotive Manufacturer
- Analysis, software development/customization, and testing of various transaction and batch objects
- Conducting functional integration and regression tests on TEST and QA platforms under z/OS for later production implementation
- Hardware / Software / Tools: IBM MVS, z/OS, JES2/3, TSO-ISPF, JCL, DB2, SQL, SQL/PL, QMF, QMF for Workstations, SPUFI, FileAid, IMS-DB/DC, MFS, XPEDITER, COBOL, REXX, Windows 10, MS Office 365, MS Teams, batch job management via OPC, BETA92, RVS, BVB, ABL, DIALOGplus, PROBA, PRODPR (VW internal systems), JIRA, CONFLUENCE
Andreas S.
Last position:
Project Management, Development and Test- (Defect-) Management at safarica.com
- Creation and implementation of a multilingual, relational MariaDB database to reflect the requirements of a booking system designed for safaris in Africa
- Testing the front- and backend functionality, registration of clients and suppliers, the editorial system and the payment workflow
- Defect management and documentation via BugHerd
- Implementation of an automatic internal deployment of deliveries provided by an external company via bash scripts
- Coordination of external companies in the function of a project manager (Stakeholder Management)
Tina W.
Last position:
Solution Architect at Freelancer
- Project management
- Consulting
- Customizing using Designer / Admin Client for Wincube, Webcube and iRoom
- Interface between the customer and SER
- Implementation of various archives, file solutions and workflow projects with SQL and SAP integration
- Integration of agents, the REST API interface, Orgatransmitter, SSO
- Introduction of the HR, QM, Contact & Contract Solution Packages
- Documentation
- Conducting training sessions, including creating training materials
- Authorization concept design
Matthias L.
Last position:
Head of IT System Architecture at Internal IT service provider
- Industry: metal processing industry
- Revenue: 740 million EUR
- Employees: 4,400
- Budget: 7 million EUR, 15 staff
- Designing and operating technical services
- Ensuring IT security
- Managing the central support organization (first, second, and third level)
- Digital transformation: strategic support / project management for OT platform and OT security
- Developing and introducing ITIL processes (incident management, problem management, service request fulfillment, change management, access management, service level management)
- Supporting and coordinating external service providers (provider management)
- Project management: planning and delivering IT services for a new main plant
- Promoting IT-OT convergence / OT asset management / OT security
- Organization: mediating and supporting reorganization
Achievements:
- Improving IT operations maturity (introducing and stabilizing processes, KPIs, ensuring transition)
- Replacing the ticket system with ServiceNow
- Stabilizing and developing IT security / ensuring resilience
- Successfully introducing OT segmentation (architecture, remote access control, micro-segmentation, OT asset management)
- Supporting introduction of manufacturing execution system (technical services / SaaS provider management)
- Integrating foreign sites (rollout of central IT services)
- Migrating on-premises server environment to MS Azure
- Rolling out Windows 11
- Supporting migration of on-premises SAP environment to SAP RISE
- Creating planning basis for IT network infrastructure of the new main plant
- Planning web shop
- Organizational development "From Operating to Designing" (target SIAM organization)
- Supporting BCM
Manfred S.
Last position:
Senior System Engineer Linux at DB InfraGo AG
- Set up and updated virtual machines for railway operations infrastructure.
- Used VMWare vSphere 6–8, Veeam Backup, Microsoft Active Directory, DNS, NPS, and WSUS.
- Used RedHat Satellite Server, rSyslog Server, Icinga2, Postfix, Tacacs, Ansible, and Ansible Automation Platform.
- Operated HPE rack servers and HPE Synergy blade servers with Meinberg NTP Server, Brocade FC, and Cisco Nexus 9000.
Discover over 15,000 top freelancers
Statistics of experts using OS/2
Aggregated from the professional profiles of matched freelancers.
Experience
31 years
Position duration
2 years
Positions per freelancer
25
Top business areas
Information Technology, Quality Assurance, Project Management
Top industries
Information Technology, Banking and Finance, Manufacturing
Certification focus areas
Information Technology, Project Management, Quality Assurance
Bachelor's degree or higher
48%
Master's degree or higher
29%
Doctorate
10%
Certifications per freelancer
2
Most common languages
German, English, French
Speak two or more languages
94%
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 OS/2
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.
OS/2 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 (91%)
- Banking and Finance (77%)
- Manufacturing (69%)
- Automotive (63%)
- Government and Administration (57%)
- Insurance (51%)
- Healthcare (46%)
- Transportation (46%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
What OS/2 is
OS/2 is an operating system originally developed by IBM and Microsoft for business desktops, technical workstations, and reliable multitasking. IBM later continued the product as IBM OS/2, including OS/2 Warp. Companies still depend on it where established applications, specialized hardware, and stable operational processes matter.
Typical systems
OS/2 often runs software that was built for manufacturing, logistics, banking, retail, transport, and office operations. Its environments may control terminals, production interfaces, databases, print services, or other purpose-built workflows that are difficult to replace without operational risk.
- Maintain OS/2 Warp and IBM OS/2 installations
- Support Presentation Manager applications
- Connect legacy systems to modern networks
- Document migration and continuity options
Ecosystem and tools
Strong specialists understand OS/2 command-line tools, batch files, CONFIG.SYS, and startup behavior. They may also work with Presentation Manager, Workplace Shell, LAN Server, NetBIOS, TCP/IP, and DOS compatibility. Knowledge of C, C++, Rexx, assembler, database interfaces, and older hardware is often relevant.
When expertise matters
Companies usually bring in freelance specialists during an incident, system audit, hardware replacement, application change, or gradual modernization program. In Germany, local teams may need on-site support for industrial or operational systems, while remote work can cover documentation, troubleshooting, testing, and migration planning.
- Investigate startup, driver, and networking faults
- Stabilize an undocumented production environment
- Assess replacement or virtualization paths
- Transfer knowledge before a modernization project
What strong specialists deliver
The best professionals first map dependencies instead of changing a stable system blindly. They can read older source code, reproduce issues safely, verify interfaces, and explain technical risk in clear terms. Their deliverables may include recovery procedures, configuration records, test plans, monitoring guidance, and a practical transition roadmap.
OS/2 in modern environments
OS/2 rarely operates in isolation. Specialists may place it behind controlled network boundaries, connect it to current file or database services, or run it through suitable virtualization and emulation approaches. Success depends on preserving timing, device access, data exchange, and operator workflows while reducing avoidable exposure and support risk.
Frequently asked questions
Questions about OS/2? Start with the answers below.
OS/2 is still found in stable business and industrial environments where specialized applications or hardware remain operationally important. Common examples include production interfaces, logistics terminals, banking systems, retail workflows, and legacy office applications.
IBM OS/2 can offer strong multitasking and predictable behavior for applications designed around its original environment, but it has a much smaller modern ecosystem than Windows or Linux. Replacing it may improve supportability, yet compatibility with hardware, drivers, and custom software must be assessed first.
OS/2 work often benefits from knowledge of DOS, C or C++, Rexx, assembler, TCP/IP, NetBIOS, Presentation Manager, and older database interfaces. Experience with virtualization, network segmentation, hardware diagnostics, and migration planning is also valuable.
A strong OS/2 freelancer should have direct experience with the relevant release, application stack, and hardware rather than only general legacy-system knowledge. The required depth depends on whether the assignment involves incident response, maintenance, source changes, integration, or a full replacement assessment.
OS/2 Warp specialists can often handle documentation, code review, configuration analysis, testing, and migration planning remotely. On-site work may still be needed when the system depends on industrial devices, unusual peripherals, restricted networks, or physical recovery procedures in Germany.
IBM OS/2 benefits from on-site support when faults involve hardware, boot media, cabling, terminals, or production equipment that cannot be reproduced elsewhere. Remote collaboration is usually sufficient for planned maintenance and analysis when secure access and accurate system records are available.
A capable OS/2 professional can explain dependencies, recovery risks, and proposed changes in concrete terms before touching a live system. Ask for examples of troubleshooting, documentation, safe testing, and work with the specific interfaces or hardware in your environment.
OS/2 modernization should start with an inventory of applications, data flows, devices, interfaces, and operational dependencies. A sound plan compares containment, virtualization, emulation, staged replacement, and full migration while defining rollback steps and testing with system users.
The average hourly rate of freelancers in Germany who have used OS/2 in their recent projects is 102 €, which corresponds to a daily rate of about 813 € based on an 8-hour working day.
Of the freelancers in Germany who have used OS/2 in their recent projects, 48% hold at least a Bachelor's degree, 29% hold at least a Master's degree, and 10% hold a doctorate.
On average, freelancers in Germany who have used OS/2 in their recent projects have 31 years of professional experience, with a single engagement typically lasting around 2 years.
The most common languages among freelancers in Germany who have used OS/2 in their recent projects are German (100%), English (94%), and French (37%).
The most common industries among freelancers in Germany who have used OS/2 in their recent projects are Information Technology (91%), Banking and Finance (77%), and Manufacturing (69%).
The most common business areas among freelancers in Germany who have used OS/2 in their recent projects are Information Technology (100%), Quality Assurance (86%), and Project Management (74%).
Main locations of FRATCH Experts, who have recently used OS/2
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
