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OpenVMS Experts in Cologne

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Hire experts who keep OpenVMS systems stable, maintain DEC and VAX heritage applications, and support RMS, DCL, clustering, and migrations. Get fast, precise matching with vetted, available freelancers.

Meet FRATCH Experts in Cologne, who have recently used OpenVMS

Verified expert

Sebastian Stricker

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Freelance Consultant External Workforce Procurement

Köln
Sebastian Stricker

Last position:

Freelance Consultant External Workforce Procurement at Carl Zeiss AG

  • Sourcing contractors, temp labour and direct-search suppliers
  • Advisor to procurement and HR on a change project
Verified expert

Stefan Marx

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Installation Portal Server and Content Management Integration

Köln
Stefan Marx

Last position:

Bundesrechtsanwaltskammer

  • Design, planning and execution of complex acceptance tests for a document exchange platform for the German justice authorities.
  • Validation of decrypted and certificate-based message exchange via web platform, mobile app, and Java API.
  • Documentation of test cases, execution steps, and test results.
  • Technologies: Windows 11/10, Ubuntu, iOS, Android, Bash for Windows, Java 17, IntelliJ, Git, Jira, Confluence, Citrix Server, xJustiz standard implementation, specific justice software.
Verified expert

Sebastian Hefczyk

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Overall Project Manager; Turnaround Manager & Coach

Bornheim
Sebastian Hefczyk

Last position:

Overall Project Manager; Turnaround Manager & Coach at Statutory Health Insurance Fund

  • Taking over the troubled project from the internal project management and successful turnaround of project phase 1 (cutover of approx. 1000 servers (VMs)/standard desktops, specialized desktops)
  • Responsible project management for the successful phase 1 transition (planning in the shortest possible time followed by implementation (very successful with low ticket volume))
  • Stakeholder management – taking over direct (daily before cutover) communication with the client from the Chief Operation Manager in the format of regular meetings in taskforce mode. Rapid rebuilding of the previously lost trust base and restoration of the client relationship for optimal satisfaction
  • Taskforce mode to eliminate all existing issues/showstoppers before cutover
  • Scope clarification, setup, and scheduling of phase 2 activities (e.g. silo/admin servers)
  • Kick-off of phase 2 / handing the project back to the success line for the internal project management/line to handle the remaining defined topics
  • Establishing, preparing, and conducting steering committees with V-1 management to align the guardrails
  • Moderation of various regular meetings and operational workshops
  • Participation in the lessons learned with the client to address dissatisfaction related to the internal project management (before my start! They are extremely satisfied with my work)
  • Tools: Atlassian Suite (Confluence/JIRA), MIRO, Sharepoint; MS Office (PowerPoint, Excel, MS Project)
Verified expert

Christian Hunkirchen

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Developer

Bonn
Christian Hunkirchen

Last position:

Developer at Opereon Consulting GmbH

  • Developed a shop website
  • Integrated an AI language model
  • Developed tools for AI-powered webhooks
  • Technical tools: REACT.js; Elevenlabs; MCP; n8n; HTTP
Verified expert

Alexander Vasiliev

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Software Architect / Software Engineer / Tech Lead

Cologne
Alexander Vasiliev

Last position:

Senior DevOps / Platform Engineer at Kaufland e-commerce / real.digital (ex hitmeister.de)

  • Evolved the platform from bare-metal infrastructure with a monolithic PHP application to a hybrid Google Cloud architecture with Go microservices on Kubernetes
  • Managed and scaled a production infrastructure with 300+ VMs and dozens of clusters, including MySQL, PostgreSQL, MongoDB, RabbitMQ, Redis and Elasticsearch clusters
  • Designed architecture, deployment, monitoring, performance analysis, and upgrades for all platform services using Terraform and Ansible
  • Migrated observability systems from ELK and Prometheus to Datadog, managed with Terraform
  • Introduced Jenkins CI/CD with SonarQube integration and automated tests to speed up feedback cycles
  • Containerized the testing environment and implemented GitLab CI pipelines for Docker image builds, static code analysis, and infrastructure tests
  • Performed zero-downtime migrations of MySQL and MongoDB clusters to Google Cloud
  • Developed reusable Ansible roles for database clusters and automated data obfuscation for staging environments
  • Decomposed monolithic databases and migrated to microservice architectures
  • Built tools to detect and optimize slow queries in MySQL and MongoDB
  • Conducted online schema migrations with pt-online-schema-change without downtime windows
  • Developed internal Go applications for batch queries, GitLab-Jira integration, and MongoDB backup recovery
  • Technologies: Debian, Ubuntu, Alpine, Go, Bash, Python, PHP, SQL, GitLab CI, Jenkins, Drone CI, MySQL, MongoDB, PostgreSQL, Redis, Elasticsearch, RabbitMQ, Kafka, Docker, Kubernetes, Nomad, Ansible, Terraform, Grafana, ELK, Prometheus, Datadog, Nagios, Zabbix, Nginx, HAProxy, Vault, Helm, SonarQube, Filebeat, Auditbeat, Google Cloud, AWS
Verified expert

Pierre Gronau

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Ansible Automation, Windows Third Level Support

Cologne
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
Verified expert

Saood Yousaf

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Senior Application Owner

Cologne
Saood Yousaf

Last position:

Senior Application Owner at an international energy company

  • Further development of the application landscape for planning, forecasting and pricing

  • Communication with internal stakeholders to homogenize the application landscape across all entities

  • Optimization of vendor management

  • API and batch processing

  • Creation of operational concepts

  • Ensuring compliance with regulations and operational processes

  • Participation in solution design as well as implementation and further development of new applications and services

  • ServiceNow

  • Virtual Machines (Windows / Linux)

  • M365 Products

  • Azure DevOps

  • Web Applications

Verified expert

Fabian Zur Heide

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Scientific Employee

Erftstadt
Fabian Zur Heide

Last position:

Freelance IT Specialist

IT specialist Application Engineering / Software Development since 2012

Discover over 15,000 top freelancers

Statistics of experts using OpenVMS

Aggregated from the professional profiles of matched freelancers.

Experience

22 years

Position duration

2.8 years

Positions per freelancer

23

Top business areas

Information Technology, Project Management, Operations

Top industries

Information Technology, Manufacturing, Healthcare

Certification focus areas

Information Technology, Operations, Project Management

Bachelor's degree or higher

86%

Master's degree or higher

29%

Certifications per freelancer

5

Most common languages

German, English, French

Speak two or more languages

100%

Based on our profile pool as of 30 Aug 2026.

Daily rate distribution

0 1 2 3 4
<€640 €640-​800 €800-​960 €960-​1120 €1120+

The chart shows how the daily rates of freelancers in this technology in Cologne 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 Cologne using OpenVMS

Rates are based on recent contracts and do not include FRATCH margin.

1000
750
500
250
Rate comparison chart
Daily rate avg. 809 €

The average daily rate is the mean of all daily rates from recent contracts of comparable freelancers on our platform.

1000
750
500
250
Rate comparison chart
Median rate 780 €

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

OpenVMS in practice

OpenVMS is a long-lived operating system used for dependable business and technical workloads. Companies still rely on it for transaction processing, batch jobs, and systems that must stay predictable over time. It is often tied to legacy but critical applications that cannot be replaced quickly.

Common environments

  • Alpha, Integrity, and x86-based OpenVMS systems
  • VAX heritage applications and porting work
  • Digital, Compaq, and HPE OpenVMS estates
  • Mixed setups with TCP/IP services and layered tools

These environments need careful maintenance, not quick rewrites.

What specialists deliver

Strong OpenVMS professionals handle system setup, daily operations, and troubleshooting across the stack. They work with DCL, RMS, security settings, backup routines, and system logs. They also support upgrades, device changes, and application compatibility checks.

When companies bring help

  • An old system must stay online while internal knowledge is thin
  • A migration is needed, but the business cannot stop running
  • Performance issues appear in batch, storage, or networking
  • Documentation is incomplete and the codebase is sensitive

In Cologne, this often matters for industrial, logistics, and enterprise environments that keep stable core systems in place.

Skills that matter

Good experts know OpenVMS internals, but they also understand the surrounding software. They should be comfortable with scripting, storage, network services, backups, and change control. Clear documentation and careful testing are as important as technical depth.

Good fit for the work

The best specialists are calm with legacy systems and precise under pressure. They read old code, trace issues across layers, and explain risks in plain language. For Cologne teams, remote work often fits analysis and support, while on-site time helps with hardware, operations, and handover.

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Frequently asked questions

Curious about OpenVMS? Here are the answers that come up again and again.

OpenVMS is used for systems that must be stable, traceable, and hard to interrupt. It often runs core business applications, transaction processing, batch workloads, and control systems that have been in service for a long time. Many companies keep it because the software around it is still valuable.

OpenVMS is usually chosen for consistency, strong operational control, and its mature system services. Unix and Linux are more common for new builds, but OpenVMS can be the safer choice when a working estate depends on existing code, procedures, and data structures. The right comparison depends on whether the goal is modernization or preservation.

A strong OpenVMS specialist usually knows DCL, RMS, security, backups, and layered products such as TCP/IP services. Scripting, troubleshooting, and migration planning are also important. If the system connects to other platforms, knowledge of file transfer and interface design helps a lot.

For routine maintenance, a specialist who has worked in OpenVMS environments before can usually move quickly. For migrations, performance problems, or fragile legacy applications, you want someone who has seen similar systems and can spot hidden dependencies. The more business-critical the estate, the more important proven practical work becomes.

Yes, much of the OpenVMS work can be done remotely from Cologne, especially analysis, documentation, debugging, and planning. On-site time is useful when there is hardware access, operator handover, or sensitive infrastructure that must be reviewed directly. Many teams use a mix of both.

Those platform names still matter because many OpenVMS estates grew through several hardware generations. A specialist should understand how application behavior, drivers, and system setup can differ across VAX, Alpha, Integrity, and newer x86-based systems. That knowledge is useful during upgrades and compatibility checks.

A good OpenVMS freelancer asks about the exact system version, the application stack, and the operational risks before making changes. Look for clear notes, careful testing, and practical explanations instead of vague promises. The best sign is someone who protects continuity and documents what they touch.

Choose OpenVMS help when the existing system still supports a critical process and replacement would create more risk than benefit. This is common when the code is stable, the business rules are embedded in the system, or the migration path is not yet clear. A specialist can help you decide whether to maintain, modernize, or retire it.

The average hourly rate of freelancers in Cologne, Germany who have used OpenVMS in their recent projects is 101 €, which corresponds to a daily rate of about 809 € based on an 8-hour working day.

Of the freelancers in Cologne, Germany who have used OpenVMS in their recent projects, 86% hold at least a Bachelor's degree and 29% hold at least a Master's degree.

On average, freelancers in Cologne, Germany who have used OpenVMS in their recent projects have 22 years of professional experience, with a single engagement typically lasting around 2.8 years.

The most common languages among freelancers in Cologne, Germany who have used OpenVMS in their recent projects are German (100%), English (100%), and French (11%).

The most common industries among freelancers in Cologne, Germany who have used OpenVMS in their recent projects are Information Technology (89%), Manufacturing (67%), and Healthcare (56%).

The most common business areas among freelancers in Cologne, Germany who have used OpenVMS in their recent projects are Information Technology (89%), Project Management (89%), and Operations (78%).

Main locations of FRATCH Experts, who have recently used OpenVMS

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:

Berlin Hamburg Munich Cologne Frankfurt Stuttgart Dusseldorf Leipzig Dortmund Essen Bremen Dresden Hanover Nuremberg

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