OS/2 Experts in Germany
in minutes with vetted specialists and AI matchingHire experts who keep OS/2 systems stable, maintain IBM OS/2 and Warp applications, and support legacy integrations on modern infrastructure. FRATCH matches you fast with vetted, available freelancers who know the stack and the support work around it.
Meet FRATCH Experts in Germany, who have recently used OS/2
Luca Pacor
Last position:
ERP Program Manager at Fiserv
The client is undergoing a comprehensive transformation. All SAP ECC landscapes worldwide are being migrated to SAP S/4HANA, with the goal of introducing a global standard template.
The program also includes the migration and modernization initiative "RISE with SAP", which may involve migrating selected country installations to the SAP Private Cloud.
On the stakeholder side, the program's reporting line extends up to the company's board and the implementation partner's board.
Fiserv Germany's ERP landscape currently includes several non-standard SAP tools and applications that extend the ECC environment's functionality and often integrate with downstream systems. As part of the move to SAP S/4HANA, it is essential to assess the core functionality, integration points, and future viability of these applications to determine their alignment with the target architecture.
The focus of the role is to provide expert advice and assessment to define the scope, strategy, and roadmap for migrating Fiserv Germany's SAP ECC system to SAP S/4HANA.
SAP's recommended best practices 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, ensuring alignment with industry best practices, regulatory compliance, and future scalability.
Migration strategy definition – evaluating 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 needed to implement required functions in SAP S/4HANA and identify process optimization opportunities.
Roadmap for non-SAP systems and applications – evaluating third-party and legacy applications for SAP S/4HANA integration and recommending consolidation, migration, or replacement strategies.
Deployment & implementation planning – defining a phased rollout approach, including project timelines, risk mitigation strategies, and key milestones aligned with business priorities.
The transformation is carried out in phases: the discovery phase leads to the explore phase, which then leads to the design phase and finally to the implementation phase.
Program management
Change management
Requirements management
Transition management
Stakeholder management
Risk management
Comprehensive coordination
Silvia Biedermann
Last position:
Business Consultant - Product Management Banking at Aareal Bank AG
- Focus on EBICS optimization and further development of the customer’s internal EBICS application
- Business and technical consulting for Aareal First Financial Solutions AG on products and applications of the EBICS standard in the areas of operations and further development, as well as project-related communication with external development partners and the product vendor to map the relevant optimizations on a technical level
- In the role of business coordinator, consulting on content-related and regulatory requirements as well as technical prerequisites and needs, and consolidating these on a business level
- Consulting on the use of EBICS formats
- Review of the current EBICS standard for potential optimizations and further development
- Analysis of the current state to identify further development potential and derive suitable recommendations for action, taking regulatory requirements into account
- Carrying out EBICS tests during the project
- Responsible on a business level for requirements management, and in this context capturing and documenting requirements for such tests
- Design of a functional and long-term test management approach
- Execution and evaluation of tests
- Consulting on sustainable quality assurance and audits
- Project languages: German and English
- Tools/methods: MS Project, MS Office, MS Visio, TestRail, Confluence, Jira, Business Logics Bank Rechner, 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
Michael Fuhrmann
Last position:
DACHSER SE
- Support and consulting in the authorization environment and license optimization
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
Sascha Jürgens
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
Pierre Gronau
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
Jürgen Schoemaker
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 Schenk
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)
Matthias Lepka
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
Stefan Corsten
Last position:
SSIS Development at Stadtsparkasse München
- Replacement of a Java application and the Oracle DB for loading the internal WerWasWo system using SSIS.
- Development of SSIS packages to load text files into the database (SQL Server)
- Development of a database project for deployment on various servers
- Creation of queries to monitor the loading runs
- Development of a PowerShell script to automate the deployment of the SSDT projects.
- Oracle, SQL Developer, Microsoft SQL Server 2022 on-premises, SQL Server Management Studio v21, Visual Studio 2022, SSIS, SSDT, PowerShell.
Vladimir Maznicenko
Last position:
Developer at Financial services provider
- Support and further development of a framework for developing applications in a banking association: DynS/OSPE
- Migration of the framework to Java 11 and Java 17
- Java8, Java11 and Java17, Spring, Spring-Batch, Spring WebServices, Spring-Security, Spring-Data, JPA, Hibernate, OpenSource libraries etc.
- XML, JAXB, JSON, REST and SOAP services, DB2, Oracle, WebSphere or Liberty AS, FreeMaker, Junit, mock libraries, JaCoCo, Maven, IntelliJ, Eclipse, GitHub, SVN, Jira
Peter Brungs
Last position:
Data Warehouse Consultant (Development and Analysis) at Atruvia AG
- Developed and enhanced ETL loading jobs with IBM DataStage and optimized SQL in an IBM DB2 environment as part of the Agree21 data migration
- Analyzed data quality and developed test procedures
- Created PowerShell scripts and documented GIT deployment processes
- Technologies: RedHat Linux, IBM DB2 with DBVisualizer, IBM InfoSphere DataStage 11.7, JIRA, TortoiseGIT, TortoiseSVN, PowerShell scripts
Axel Telthörster
Last position:
Migration of Host Programs to Decentralized Processing (Cobol to Java) at Freelancer
- Analysis of calculations in the legacy system (Cobol), reconciliation with specification and checking differences in the new system
- Managing change requests with Jira
- Basis for compare reconciliation: XML formats for further processing in Dopix (business: VS certificate, customer info, contribution statements)
- Automated XML comparisons via TWS jobs in various test systems
- Reviewing and documenting related utility programs and interface calls
- Reviewing legacy programs in terms of content, technology, and business logic
- Creating and extending JCLs for regression tests host <> decentralized
- Analyzing error cases and comparing with specifications for correctness
- Creating Jira tickets as requests or bug fixes for the Java programs
Technical environment:
- COBOL
- TSO/ISPF
- DB2/SQL (Spufi, QE2)
- IMS-DB/DC application development
- JCL, TWS (Tivoli), EJM Beta48 (AIX)
- Changeman (Extended Release Option)
- Citrix environment
- MS Office
- Ticket management with Jira
- Agile development
Peter Neumann
Last position:
Pilot testing AI tools & sabbatical for house renovation
- Pilot testing local AI environments to explore local AI use cases and cloud-based AI solutions
- Evaluation of AI tools and techniques
- Use of local AI tools with own data sovereignty
- Prompt engineering
- Creation of example environments for speech-to-text, text-to-speech, text-to-image, text-to-video, and image-to-video
Tools: Grok, Perplexity, ChatGPT, Elevenlabs, Github, Ollama, HuggingFace, Open WebUI, Faster Whisper, LibreTranslate, WSL, Docker Desktop, Shotcut, Audacity, Sound eXchange, Ffmpeg, Coqui TTS, Pinokio, Stable Diffusion Web UI, ComfyUI, OWL, Void Editor
Marcel Dicks
Last position:
Software Developer / IT Tester at Continentale Krankenversicherung a.G.
Analysis, online COBOL software development and testing of dialog and batch programs in the Kranken Leistung (KL) project
Error analysis, bug fixing and ticket resolution (change requests and defects)
Documentation in collaboration with the contact office and the mathematics department
IT skills: Siemens Fujitsu BS2000, CCOM Emulation, Micro Focus Visual COBOL I and II, Eclipse IDE, UDS database system, Atlassian Confluence and Jira, ZULIP, UNIFY
Discover over 15,000 top freelancers
Statistics of experts using OS/2
Aggregated from the professional profiles of matched freelancers.
Experience
32 years
Position duration
2.1 years
Positions per freelancer
26
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
44%
Master's degree or higher
28%
Doctorate
11%
Certifications per freelancer
2
Most common languages
German, English, French
Speak two or more languages
94%
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 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 30 Aug 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
About the technology
OS/2 in practice
OS/2 is an IBM operating system known for stable business desktops and long-lived industrial setups. Companies still use it for legacy line-of-business software, terminal stations, and systems that depend on OS/2 Warp behavior.
Typical work
- Maintain existing OS/2 applications and batch jobs
- Diagnose boot, driver, and compatibility issues
- Keep file, print, and network services running
- Support migrations from OS/2 to newer environments
Ecosystem details
Strong professionals know IBM OS/2, Warp, CMD scripts, Rexx, and the quirks of the Presentation Manager interface. They also understand storage drivers, TCP/IP add-ons, and how older hardware or emulators affect day-to-day support.
Why companies hire help
Freelance expertise is useful when internal teams no longer know the platform or when a system must stay live during change. In Germany, this often comes up in manufacturing, logistics, and office environments where OS/2 still connects to older equipment or custom software.
What strong experts bring
A good specialist reads old code quickly, documents what a system really does, and avoids risky changes. They can trace problems across the operating system, application layer, and external devices without guessing.
Delivery and handover
- Clear system documentation and risk notes
- Fixes that keep the current environment usable
- Practical migration plans when replacement is needed
- Remote support with on-site help when hardware access matters
Frequently asked questions
Questions about OS/2? Start with the answers below.
OS/2 is still used in legacy business systems that need a stable, familiar environment. It often appears in desktop stations, industrial terminals, and software that was built for IBM OS/2 or OS/2 Warp and has not yet been replaced.
OS/2 work is usually less about new feature development and more about keeping existing systems reliable. Compared with Windows or Linux projects, the main challenge is legacy knowledge, old tooling, and careful change management.
A strong OS/2 specialist usually knows Rexx, CMD scripting, driver troubleshooting, and basic network setup. Experience with legacy hardware, file and print services, and migration planning is also valuable.
A project usually needs outside OS/2 help when the internal team cannot safely maintain the system anymore. That includes urgent incidents, undocumented custom software, and planned replacements that must keep the old environment running during the transition.
Yes, much of OS/2 support can be done remotely if the system is reachable and logs are available. On-site work is still useful when older hardware, special peripherals, or local network access must be checked directly, including in Germany-based facilities.
Look for clear documentation, careful change control, and a practical understanding of the whole system, not just the OS name. A good IBM OS/2 or Warp professional explains root causes simply, tests fixes safely, and leaves the environment easier to support.
Often yes, because many OS/2 engagements end with a migration or replacement plan. A capable freelancer can stabilize the current setup first, then map data, integrations, and business rules into a modern target platform.
For OS/2, prepare system access, application notes, hardware details, and any old manuals or source archives you still have. The more information you share upfront, the faster a specialist can diagnose issues and decide whether maintenance or migration is the better path.
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 816 € based on an 8-hour working day.
Of the freelancers in Germany who have used OS/2 in their recent projects, 44% hold at least a Bachelor's degree, 28% hold at least a Master's degree, and 11% hold a doctorate.
On average, freelancers in Germany who have used OS/2 in their recent projects have 32 years of professional experience, with a single engagement typically lasting around 2.1 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 (41%).
The most common industries among freelancers in Germany who have used OS/2 in their recent projects are Information Technology (91%), Banking and Finance (78%), and Manufacturing (66%).
The most common business areas among freelancers in Germany who have used OS/2 in their recent projects are Information Technology (100%), Quality Assurance (84%), and Project Management (72%).
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.
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FRATCH CEO
