
Mainframe Experts in Germany
matched in minutes from over 15,000 CVsHire experts who modernize COBOL applications, manage z/OS environments and connect IBM Z systems with cloud services. FRATCH finds the right vetted, available freelancer through fast, precise AI matching.
Meet FRATCH Experts in Germany, who have recently used Mainframe
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
Hans-Dieter G.
Last position:
Training as an AI Expert
I continuously expand my expertise in AI and automation. I work with ChatGPT, OpenAI, Manus, Gemini, MS CoPilot, APIs, LangChain, Hugging Face, Manus, TensorFlow, and Auto-GPT, as well as Python-based ML frameworks and MLOps tools, to intelligently transform traditional software development, analysis, and testing processes.
Kenan Š.
Last position:
Enterprise Architecture at Swiss Krono
- Building up the Enterprise Architecture department. Preparing the convergence of IT / OT.
- Mapping the global business application landscape (6 countries).
- Concept for a graph model of the application landscape. Storing the results in the open-source graph database Neo4J. Various reports in the database query language CYPHER and the visualization component BLOOM. Automatic generation of IT architecture diagrams.
- Development of an application taxonomy to identify redundant applications.
- Applying Gartner's Software Portfolio Management TIME model (Tolerate, Invest, Migrate, and Eliminate) for portfolio management.
- Enterprise Architecture Governance: establishing architecture guidelines for documenting measures and decisions.
- Process modeling according to Porter (Value Chain).
- Various architecture approvals for change requests and documentation in Architecture Decision Records (ADR).
- Working on the RACI matrix for various processes.
- Working on business capabilities as preparation for a LeanIX rollout.
- Contributing to the concept for IT/OT convergence.
- Establishing architecture guidelines in a very pragmatic corporate culture. Knowledge about applications and responsibilities is spread across the world.
Burhan D.
Last position:
Enterprise Architect & Solution Architect at DB Netz AG
With project PRIZMA, DB will modernize its infrastructure on the one hand, and develop a fail-safe IT landscape on the other hand, which can be restored quickly and securely in case of a disaster.
- Capture current architectures of existing systems as well as methodical consulting and development of target architectures
- Deepen and maintain the building plan / target IT landscape
- Implement technical architecture concepts & architecture descriptions
- Implement migration concepts for updating and further developing the platform and information systems
- Assess submitted improvement suggestions as part of the project
- Capability management: identify capability gaps, develop target visions, and support transformation planning within the enterprise architecture.
- Create a compatibility matrix of the components in use and compare dependencies of specific versions
- Create an IT concept for extending the platform with the following topics: hardware and software requirements, security, licensing, high availability, load balancing, backup & recovery, update strategy, monitoring integration, etc.
- Coordinate with business architects as well as technical architects from the cross-functional architecture area of the PRISMA program for the topics (backup, Active Directory, monitoring, Citrix, and business applications ...)
- Status meetings and alignment of project planning with the Release Train Engineer / Project Manager
- Advise the Release Train Engineer / Project Manager in identifying project risks
- Advise the System Architect Engineers in steering the implementation of the concept
- Implement the IT concept
- Document the infrastructure
Label: MS Project, LINUX, Windows, ORACLE, Java, REST, SharePoint, Microsoft Exchange, UML, Enterprise Architect, BPMN, AZURE, AWS, V-MODEL, Micro Service, VisualStudio, SAP S/4HANA, SCRUM(SAFE), ESB (TIBCO), Python, Innovator, LeanIX (TOGAF), Ansible, Ansible Tower, Ansible Automation, ROBOT, SpringBoot
Ralf B.
Last position:
Interim Product Manager IT-Site Management at Exyte Management GmbH
- Definition and implementation of the global strategy for IT site infrastructure products and services, ensuring scalability, security and compliance
- Leadership and development of a high-performing team of IT site management specialists, promoting collaboration and professional development
- Monitoring the quality of IT services for sites and ensuring timely delivery and compliance with company standards
- Central point of contact between Corporate IT, regional IT teams and business stakeholders for site infrastructure topics
- Driving innovation and process optimization in the delivery and operation of IT site infrastructure
- Responsibility for the product lifecycle of IT site infrastructure solutions, from design through retirement
- Management of global demand for IT site infrastructure services and ensuring alignment with IT demand management processes
- Establishment and monitoring of KPIs for service delivery and product performance
- Ensuring compliance with IT security, data protection and regulatory requirements
- Management of supplier relationships and negotiation of contracts for IT site infrastructure services
- Budget planning and cost optimization for IT site infrastructure
- Review, improvement and implementation of ServiceNow processes
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)
Olaf K.
Last position:
CIO Advisor・IT Strategy・Tech/IT Due Diligence・Enterprise Architecture・IT Governance・AI Transformation・ex-BCG Platinion at Kiese IT
- -- ENGLISH Version (Deutsche Version unten) ---
Experience
- Ex-BCG Platinion: 14 years as Manager & Chief IT Architect, leading large-scale IT transformations in complex group structures
- 20+ years of C-level consulting across AI/IT strategy, enterprise architecture, IT organization, transformation, M&A due diligence, project recovery, and interim management
- IT leadership experience with cross-functional, intercultural teams of up to 100+ people
- Hands-on background in software engineering, IT architecture, and project management
- Fortune Europe 500 focus; numerous international projects; SME and start-up experience
Core services:
- IT strategy, enterprise architecture (EAM), target architectures and roadmaps
- PE/M&A/carve-out IT/tech due diligence, asset valuation, cost estimation
- GenAI transformation, process automation, and AI governance
- IT reorganization, target operating model (TOM), agile transformation
- IT governance, development and ITSM process optimization (BizDevOps, SAFe)
- Review and recovery of critical large-scale IT programs
- Planning and steering of transformation programs and IT project portfolios
- IT vendor and platform selection (RfI / RfP)
- Coaching & Interim management
Industries (selection): Insurance, financial services & banking, energy & utilities, telecommunications, retail & consumer goods, logistics, media, industry & engineering, healthcare, professional services
Projects (selection):
M&A Buy-side IT/Tech Due Diligence of an Acquisition in the Energy Sector (Utility, Smart Home) — AI-augmented with Anthropic Claude
AI Initiative for LLM-Based Optimisation and Automation of Sales and Billing Processes
Interim management Enterprise Architecture & group target architecture/roadmap development (METRO)
Reorganization: Design and introduction of agile IT target operating model at international wholesale group (METRO)
Design and implementation of agile BizDevOps target operating model (E.ON Grid Solutions)
Platform/vendor selection for renewal of core insurance solution of start-up (ELEMENT Insurance)
Establishment of project assurance capability and review/recovery of critical transformation projects (ERGO)
Enterprise architecture management and development of divisional/solution architectures (Deutsche Post DHL)
Strategic pricing architecture decisions in digital sales application landscape (E.ON Energie)
IT due diligence: Architecture evaluation and monetary valuation of IT assets (ProSiebenSAT.1 Media)
Interim management of group-wide security/compliance programme (ERGO)
Enabling an application landscape for different sales organizations and product structures (E.ON Energie)
Realignment of business/IT strategy and InsurTech platform selection (RfI, RfP) (nexible, ERGO Digital Ventures)
Stabilization/optimization of an agile/SAFe business/IT DevOps landscape transformation (Lufthansa AirPlus)
Process optimization and design/management of digitization and robotics introduction in power plants (RWE Nuclear)
BSS target architecture development for fixed/mobile networks convergence (Deutsche Telekom)
Optimization of IT organization model and methodology in application development and testing (Deutsche Telekom)
Evaluation of fulfillment of a general contractor agreement for run-off/migration of contract portfolios (ERGO)
-- DEUTSCHE Version (English version above) ---
Experience
- Ex-BCG Platinion: 14 years of strategy and implementation of large-scale IT transformations in complex corporate structures (Manager & Chief IT Architect)
- 20+ years of C-level-adjacent IT consulting: IT strategy, enterprise architecture, IT organization, transformation, due diligence, project recovery, and interim management
- IT leadership responsibility for cross-functional, intercultural teams of up to 100+ people
- Solid hands-on experience in software development, IT architecture, and project management
- Focus on Fortune Europe 500, numerous international projects; SME and start-up experience
Industries: insurance · financial services & banking · energy · telecommunications · retail & consumer goods · industry & engineering · logistics · media · healthcare
Services (focus areas):
- IT strategy, enterprise architecture (EAM), IT landscape target visions and roadmaps
- M&A/carve-out IT/tech due diligence, asset valuation, and cost estimation
- GenAI transformation, process automation, and AI governance
- IT reorganization, target operating model (TOM), agile transformation
- IT governance, development and ITSM processes (BizDevOps, SAFe)
- Review and recovery of critical large-scale IT projects
- Planning/steering of transformation programs and IT project portfolios
- IT service provider/platform selection (RfI, RfP)
- IT project management (agile, classic, hybrid)
- Coaching & interim management
Projects (selection):
- M&A buyer-side IT/tech due diligence of an acquisition in the energy sector (utility, smart home) — AI-augmented with Anthropic Claude
- AI initiative for LLM-supported optimization and automation of sales and billing processes
- Interim management of Enterprise Architecture and development of group target architecture in wholesale (METRO)
- Reorganization: design and introduction of an agile IT target operating model (TOM) at an international wholesale group (METRO)
- IT reorganization: introduction of an agile BizDevOps target operating model (TOM) at an energy group (E.ON Grid Solutions)
- Platform selection / vendor selection for renewal of the core insurance solution of a B2B2C start-up (ELEMENT Insurance)
- Process optimization, digitalization, and introduction of robotics in power plants (RWE Nuclear)
- Assessment of fulfillment of a general contractor agreement for run-off/migration of life insurance portfolios (ERGO)
- Business/IT strategy and InsurTech platform selection for a digital insurer/start-up (nexible, ERGO Digital Ventures)
- Enabling an energy application landscape for multiple sales units (E.ON Energie)
- Strategic architecture decisions in price management of a digital sales application landscape at an energy group (E.ON Energie)
- Stabilization/optimization of an agile DevOps IT transformation in business travel and payment management (Lufthansa AirPlus)
- Interim management in a group-wide security and compliance program of a global insurer (ERGO)
- Building project assurance capability as well as review and optimization/recovery of critical IT projects in an insurance group (ERGO)
- Building enterprise architecture management and development of domain and solution architectures for a logistics group (Deutsche Post DHL)
- M&A IT due diligence – evaluation and valuation of IT assets in the media sector (ProSiebenSAT.1 Media)
- Development of BSS target architecture and roadmap for fixed/mobile convergence (Deutsche Telekom)
- Optimization of IT governance/organization and methodology in application development and testing at a telecommunications group (Deutsche Telekom)
Martin E.
Last position:
IREB Requirements Engineer at IREB Germany
- IREB Consultant Requirements Engineer
- IREB Ambassador for the Baltics
Christian W.
Last position:
Software Engineer, cross-platform Application Manager at International major bank
- Creating interfaces between the legacy platform and the new container solution
- Coordinating required contributions from line units
- Moderating regular status meetings with the software vendor
- Minimally invasive conversion of TWS scheduling from the old to the new platform
- Environment: IBM Mainframe, DB2, CICS, MQ, Red Hat Linux, Oracle, Kubernetes, Kafka, Helm, GitLab, Jenkins
Matthias O.
Last position:
IT Project Manager at IT service provider
Implementation of anti-money laundering requirements in accordance with AMLA/KYC for an international large bank in Munich
Services provided:
- Clarification of the assignment, definition of the work package structure for the AMLA/KYC implementation project
- AI-supported project planning using my own AI workflow for project management
- Creation of the project management plan
- Resource and capacity planning
- Development of collaboration structures between IT service provider and bank client
- Alignment of responsibilities (RACI matrix)
- Management of 5 project members (core team)
- Project control, project monitoring, project reporting
- Communication management
- Escalation management
- Stakeholder management (11 stakeholders)
- Permanent member of the steering committee
- Project representation internally and externally
- Project reporting, management of decision-making bodies
- Project volume: 506 person-days (development effort)
- Risk management
- Quality management
- Organization and running of workshops
Methods: PMI PMBOK, EVM, GWG, DORA, BAIT, KANBAN, AML, AMLR, AMLA, GWG, KYC
IT environment: JIRA, Confluence, Sharepoint, Kantata Kimble, AI LLM Copilot, ChatGPT, anti-money laundering systems (in-house developments and SMARAGD)
Bernhard S.
Last position:
Agile Business Analyst and Requirements Engineer at Deutsche Post DHL
- Agile project "PEPSi annual vacation planning MVP Lite" (digitalization project).
- Definition of state transitions for the JUP Lite functionality.
- Creation of user stories for login/logout and registration.
- Quality assurance of the business-side concept.
- Preliminary analysis for the transformation from the old PersPlan to DigiPEP.
- Tools used: Signavio, MS Office (Excel, Word, PowerPoint), Jira, Confluence, Mural, Miro, Conceptboard, MS Teams, Mattermost.
Jochen G.
Last position:
Senior Specialist Software Compliance at Inter Versicherung
- Designing processes for implementing regulatory IT requirements (VAIT, BAIT, DORA, MaGo) and establishing them within the IT organization
- Monitoring the execution of these processes, quality assurance and adaptation to new requirements
- Support and coordination of the annual audit regarding regulatory IT requirements (PwC)
- ITK governance
- Software lifecycle management
- Documentation and control of the IDV development process
- Process support and policy creation when setting up test management with regard to DORA and VAIT
- Policy creation for IAM processes
- Tools/Applications: ServiceNow, Confluence, Jira, M365, Loop, Connect, Omada
Alex O.
Last position:
Contractor at Telefonica Germany GmbH & Co. OHG
- Data-analysis, Preparation, gathering and coordination of business requirements for retrieval of monthly- and long term (CLV – relevant) cost- and revenue-components per contract for a customer–base–grouping project (HUB–Project) for B2C-Postpaid-Controlling
- Concept and Implementation of cost- and revenue-KPIs calculation and corresponding CLV–reports (Oracle, Perl, SVN, MS SQL Server, MS Power BI, Serviceware Performance Analytics)
- Operational support of the HUB-Project – various ad-hoc reports, deployments, job-scheduling etc. (Oracle, SVN, BICSuite–Scheduler, DWSODA etc.)
- Analysis, implementation, retrieval and reporting of various physical and financial KPIs for B2P-Prepaid Business on an existing data-mart (Oracle, Perl)
Patrick W.
Last position:
AI Software Engineer at IppenMedia
- Analysis
- Consulting
- Software design
- Development
- Automation
- Testing
- Deployment
- Architecture, development and deployment of various proof-of-concept applications around the integration of current AI interfaces including conversational, realtime voice, images and videos
- Developed best practices for working with agentic systems and AI in practice
- Created code templates
Günther E.
Last position:
Senior Consultant at ISMS Rollout – Information Security Certification (ISO 27001)
- Built and successfully certified the Information Security Management System (ISMS) according to ISO 27001 in seven country organizations (Ghana, India, Bangladesh, Uzbekistan, Serbia, Kosovo, Albania).
- Full implementation of the ISMS from kick-off phase to certification, including defining the governance structure and process landscape.
- Developed and delivered target-group-specific trainings, workshops, and coaching sessions for local responsible persons on the basics of information security and ISMS operations.
- Designed and continuously improved training concepts and content to increase understanding and acceptance.
- Identified and implemented improvements in processes and tools, including risk management for international projects.
- Optimized central ISMS core processes from the idea through pilot operation and fine-tuning to global rollout.
- Optimized knowledge management, as well as work aids and methods for the global ISMS team.
- Built and moderated cross-functional coordination with key interfaces to the ISMS.
- Microsoft Teams, Excel, SharePoint Lists, Power Apps.
Discover over 15,000 top freelancers
Statistics of experts using Mainframe
Aggregated from the professional profiles of matched freelancers.
Experience
30 years

Position duration
2.3 years

Positions per freelancer
18

Top business areas
Information Technology, Project Management, Quality Assurance

Top industries
Information Technology, Banking and Finance, Insurance

Certification focus areas
Information Technology, Project Management, Quality Assurance
Bachelor's degree or higher
72%
Master's degree or higher
45%
Doctorate
12%

Certifications per freelancer
3

Most common languages
German, English, French

Speak two or more languages
96%
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.
Discover detailed Mainframe rate benchmarks:
Explore rate insightsAverage rates of experts in Germany using Mainframe
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.
Mainframe 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 (87%)
- Banking and Finance (83%)
- Insurance (49%)
- Professional Services (49%)
- Manufacturing (46%)
- Government and Administration (44%)
- Automotive (40%)
- Telecommunication (36%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
Core role
Mainframe systems process high-volume, business-critical workloads with strong reliability and transaction control. Companies use them for banking, insurance, public administration, logistics and large-scale retail operations. The term commonly covers IBM Z hardware, z/OS and the surrounding enterprise software.
Typical workloads
- Process account, payment and policy transactions
- Run batch jobs for billing, reporting and settlement
- Maintain COBOL, PL/I and Assembler applications
- Integrate legacy data with APIs and distributed services
- Support high-volume workloads with strict availability needs
Mainframes often remain at the center of systems that cannot tolerate data loss or interruption. Their value comes from dependable processing, mature controls and established business rules.
Ecosystem and skills
The ecosystem includes z/OS, CICS, IMS, Db2 for z/OS, JCL, TSO/ISPF and RACF. Specialists may also work with VSAM, MQ, Git-based workflows, Java on IBM Z and API management tools. Strong professionals understand both application logic and operational concerns such as scheduling, security, monitoring and capacity.
When expertise matters
- Migrate or refactor COBOL applications without losing business logic
- Upgrade z/OS, CICS, Db2 or supporting infrastructure
- Connect IBM Z workloads to cloud and open-system applications
- Investigate batch failures, performance issues or production incidents
- Document systems before a handover or modernization program
Companies bring in freelance expertise when internal knowledge is limited, deadlines are tight or a critical system needs careful change. In Germany, collaboration may involve remote delivery, on-site work or close coordination with teams responsible for regulated operations.
Choosing a specialist
Look for a professional who can explain the business purpose behind the code, not just the syntax. Relevant evidence includes production work with the exact z/OS components, safe release practices, incident response and clear documentation. Ask how the specialist tests changes across batch, online transactions, interfaces and recovery procedures.
Mainframe modernization
Modernization does not always mean replacing the mainframe. It may involve exposing COBOL functions through APIs, moving selected workloads, improving automation or introducing DevOps practices around existing applications. The right approach depends on data dependencies, latency, compliance needs, team skills and the cost of changing proven business processes.
Frequently asked questions
Key details about Mainframe, drawn from the questions we get asked most.
A Mainframe is used to run reliable, high-volume workloads such as banking transactions, insurance processing, billing, identity records and batch settlement. IBM Z systems with z/OS often support the core records and rules that other applications depend on.
A Mainframe is optimized for dependable transaction processing, centralized control and established enterprise workloads, while cloud systems offer flexible infrastructure and rapid service deployment. Many companies use both, connecting IBM Z applications to cloud services rather than treating the choices as mutually exclusive.
A strong Mainframe professional may also work with COBOL, JCL, CICS, IMS, Db2 for z/OS, RACF and MQ. API design, Java, Linux on IBM Z, automation, security and cloud integration are valuable when the system connects to newer services.
The right level of Mainframe expertise depends on the work. A controlled code change may need focused knowledge of COBOL and JCL, while a migration or production transformation calls for proven experience across z/OS operations, data dependencies, testing and recovery.
Yes, many Mainframe tasks can be handled remotely through secure access, documentation and structured release processes. On-site collaboration may still matter for sensitive environments, workshops or incident work, and German-language communication can be useful when local operations teams are involved.
A Mainframe should be modernized when its business rules and processing strengths remain valuable but its interfaces, automation or delivery methods limit change. Replacing it may be appropriate only after careful analysis of data dependencies, operational risk, compliance requirements and the cost of rebuilding proven functions.
Ask a Mainframe specialist to describe comparable production work and how they protect batch schedules, online transactions, data integrity and rollback paths. Practical answers about CICS, Db2, JCL, testing and incident handling are more useful than a list of tools alone.
COBOL and IBM Z remain relevant because many large organizations rely on applications that encode essential business rules and process substantial transaction volumes. A Mainframe specialist can preserve that value while improving APIs, automation, documentation and connections to modern systems.
The average hourly rate of freelancers in Germany who have used Mainframe in their recent projects is 103 €, which corresponds to a daily rate of about 828 € based on an 8-hour working day.
Of the freelancers in Germany who have used Mainframe in their recent projects, 72% hold at least a Bachelor's degree, 45% hold at least a Master's degree, and 12% hold a doctorate.
On average, freelancers in Germany who have used Mainframe in their recent projects have 30 years of professional experience, with a single engagement typically lasting around 2.3 years.
The most common languages among freelancers in Germany who have used Mainframe in their recent projects are German (99%), English (95%), and French (24%).
The most common industries among freelancers in Germany who have used Mainframe in their recent projects are Information Technology (87%), Banking and Finance (83%), and Insurance (49%).
The most common business areas among freelancers in Germany who have used Mainframe in their recent projects are Information Technology (100%), Project Management (82%), and Quality Assurance (69%).
Main locations of FRATCH Experts, who have recently used Mainframe
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.
Countries:
- Germany
- Austria
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