Mainframe Experts in Vienna
with fast, precise AI matching from over 15,000 CVsHire experts who modernize COBOL applications, operate IBM z/OS environments and connect mainframes with cloud services. FRATCH matches you quickly with vetted, available freelancers whose experience fits your systems and delivery goals.
Meet FRATCH Experts in Vienna, who have recently used Mainframe
Walter S.
Last position:
Territory Service Manager Red Hat Consulting at Major German Engineering and Technology Multinational Company
- Migrating from VMware to OpenShift Virtualization, 40+ workstreams / projects in parallel (Small- to Medium Sized VM Operators / Critical Factory Workload Owners / Large-Scale Data Center Operators)
Frank W.
Last position:
Software Development at REI and EMI
- Code review, bug fixing, and new development of program code in PL/SQL and Oracle Forms
- Migration of the database version to Oracle 12/19 and migration of the Oracle Forms environment from client-server to web (6i → 12c)
- Fixing blocking sessions and implementing new workflow requirements
- Use of PL/SQL packages, procedures, functions, database triggers, batch files, and Java applications
- Revision of screen masks based on Oracle Forms and client-side PL/SQL code
- Business handling of issuing and processing vouchers (REI = Reimbursement; EMI = Emission), including billing with acceptance partners
- Agile development based on SCRUM with monthly sprints and weekly coordination meetings
Michael G.
Last position:
Scrummaster at Xenovo
Planning and monitoring sprints and holding the scheduled meetings
Analyzing and resolving issues in the development process
Error analysis, bug management and correction in individual process steps
Stakeholder management
Documentation and improvement of the development process
Tools: JIRA, Confluence
Markus K.
Last position:
Document Development at Insurance Company
- Replacement of original Dopix documents and modules into the Quadient document environment
- Extension of document logic
Attila D.
Last position:
Full-Stack Software Engineer at Research Data Evaluation
- Custom anonymized research data analyzer, providing insights and facilitating data-driven decision-making.
- Designed and developed back- and frontend.
- Delivered end-to-end solution.
- Accelerated research timeline by 2 months.
Christian F.
Last position:
Project Manager at EVVA Sicherheitstechnologie GmbH
- Lead the SPG team
- Coordinate teams and activities across company boundaries
- Intensive time and cost controlling
- Monthly reporting to the CIO/CDO
- Contributing to the technical solution concept and sprint planning
- Responsibility for rollout planning
- Involvement in testing
Discover over 15,000 top freelancers
Statistics of experts using Mainframe
Aggregated from the professional profiles of matched freelancers.
Experience
31 years
Position duration
2.2 years
Positions per freelancer
15
Top business areas
Information Technology, Project Management, Operations
Top industries
Information Technology, Banking and Finance, Automotive
Certification focus areas
Information Technology, Project Management, Audit
Bachelor's degree or higher
80%
Master's degree or higher
60%
Certifications per freelancer
4
Most common languages
German, English, French
Speak two or more languages
100%
Based on our profile pool as of 16 Oct 2026.
Daily rate distribution
The chart shows how the daily rates of experts in this technology in Vienna are distributed, based on recent contracts on our platform. Each bar covers a rate range — its height shows the share of experts charging within that range.
Average rates of experts in Vienna 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 16 Oct 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 (100%)
- Banking and Finance (67%)
- Automotive (50%)
- Energy (50%)
- Healthcare (50%)
- Insurance (50%)
- Manufacturing (50%)
- Professional Services (50%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
Core systems
Mainframes are high-performance computers built to process large volumes of reliable, secure transactions. Companies use them for banking, insurance, public services, logistics and other operations where continuity and data integrity matter. The term often covers IBM Z systems and their z/OS environments.
Applications and workloads
Mainframe applications support account processing, payment clearing, policy administration, reservations and batch reporting. Many rely on COBOL, PL/I, JCL, CICS and IMS, often combined with relational databases such as Db2. Specialists maintain proven workloads while preparing them for new interfaces and business requirements.
Ecosystem and tooling
Strong expertise covers both application code and the operating environment around it. Relevant work may include:
- COBOL, PL/I and assembler application maintenance
- JCL, CICS, IMS and Db2 workload management
- z/OS operations, security and scheduling
- API integration with Java, cloud and distributed systems
- Source control, testing and automated delivery practices
When companies hire specialists
Companies bring in freelance Mainframe professionals during modernization programs, critical migrations, audit preparation and capacity changes. They also need outside expertise when internal knowledge is concentrated in a small team or when a key workload must be stabilized without disrupting production. In Vienna, collaboration may combine remote delivery with on-site workshops for regulated or operationally sensitive environments.
Modernization paths
Mainframe modernization does not always mean replacing the core system. A suitable approach may expose services through APIs, move selected workloads, improve batch performance, introduce automated testing or refactor COBOL gradually. Specialists assess dependencies, data flows and operational risk before recommending a practical path alongside existing IBM Z investments.
What strong experts deliver
The best professionals understand business processing as well as technical constraints. They document undocumented dependencies, protect transaction integrity, test batch and online flows, and communicate clearly with application, security and operations teams. For Vienna-based projects, German communication can support local workshops, while distributed teams may work effectively in English when documentation and handovers are precise.
Frequently asked questions
Not sure where to start with Mainframe? These answers cover the essentials.
A mainframe runs high-volume, business-critical workloads such as payments, account processing, insurance records, reservations and public-sector services. It is valued for transaction integrity, security, resilience and predictable processing at scale.
A mainframe and cloud environment serve different strengths, although they often work together. Mainframes provide stable transaction processing and centralized data control, while cloud systems offer flexible infrastructure and modern service patterns; integration is frequently more practical than a full replacement.
A strong Mainframe professional may also work with COBOL, JCL, CICS, IMS, Db2, z/OS security and batch scheduling. Experience with APIs, Java, automated testing, source control and cloud integration is valuable during modernization.
The right Mainframe freelancer should have completed work comparable to your workload, such as production support, COBOL enhancement, migration or API integration. Ask how they handled dependencies, testing, release controls and incidents rather than relying only on technology labels.
Mainframe work can often be delivered remotely when secure access, documentation and release procedures are established. Vienna-based companies may still prefer on-site workshops for architecture decisions, operational handovers or projects involving sensitive production environments.
COBOL modernization is often suitable when the existing application contains valuable business rules and reliable transaction flows. Incremental changes such as API enablement, automated testing or targeted refactoring can reduce risk compared with rewriting the entire system.
Ask a Mainframe specialist to explain a comparable system in terms of data dependencies, batch windows, online transactions, security and recovery. High-quality professionals make risks visible, document decisions and show how changes were tested before production release.
A Mainframe professional may work effectively in English when technical documentation and stakeholder communication are clear. German can be important for local workshops, business discussions and coordination with teams that operate in the Austrian market.
The average hourly rate of freelancers in Vienna, Austria who have used Mainframe in their recent projects is 96 €, which corresponds to a daily rate of about 769 € based on an 8-hour working day.
Of the freelancers in Vienna, Austria who have used Mainframe in their recent projects, 80% hold at least a Bachelor's degree and 60% hold at least a Master's degree.
On average, freelancers in Vienna, Austria who have used Mainframe in their recent projects have 31 years of professional experience, with a single engagement typically lasting around 2.2 years.
The most common languages among freelancers in Vienna, Austria who have used Mainframe in their recent projects are German (100%), English (100%), and French (50%).
The most common industries among freelancers in Vienna, Austria who have used Mainframe in their recent projects are Information Technology (100%), Banking and Finance (67%), and Automotive (50%).
The most common business areas among freelancers in Vienna, Austria who have used Mainframe in their recent projects are Information Technology (100%), Project Management (100%), and Operations (67%).
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:
Vienna 
Graz Request a free demo
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