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MariaDB Experts in Cologne

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Hire experts who design MariaDB schemas, tune queries and indexes, and keep MySQL-compatible databases stable under load. Get fast, precise matching with vetted, available freelancers.

Meet FRATCH Experts in Cologne, who have recently used MariaDB

Verified expert

Andreas Ernst

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Consultant

Bergisch Gladbach
Andreas Ernst

Last position:

Consultant at Iteratec GmbH

Verified expert

Andreas Wißkirchen

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Freelancer

Monheim am Rhein
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
Verified expert

Predrag Perovic

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Test Developer | Test Automator

Leverkusen
Predrag Perovic

Last position:

Test Developer | Test Automator at CreditReform

Technologies: Java 25, Selenium, Insomnia, SSO, GitLab, Jenkins, Docker, Kubernetes, Jira, IntelliJ, Nexus, Oracle, MariaDB, Spring Boot, Grafana, Concept Board, Vue.js, OpenAPI, Kotlin. Implementation, maintenance, and extension of automated end-to-end regression tests for UI and API interfaces. Appropriate and targeted test automation across multiple software products, including Java-based Windows applications. Automating business processes with Selenium, reset jobs, and DB import jobs, as well as creating test concepts, test case descriptions, and structured bug reporting.

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

Thomas Reick

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BI Consultant and Power BI Developer

Cologne
Thomas Reick

Last position:

BI Consultant and Power BI Developer at Plusnet GmbH

  • In-depth forensics of old and new data sources
  • Enhancing existing reports and creating new data analyses
  • Data preparation from source systems and semantic models
  • Azure DevOps integration
  • Tools/Skills: MS-PowerBI, DAX, MS-Office 365, PowerQuery, M, PowerAutomate, Redmine, SharePoint, SQL (T-SQL, Oracle), MS Fabric
Verified expert

Dirk Hesse

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Owner

Köln
Dirk Hesse

Last position:

Owner at Soorce GmbH

  • On secondment to REWE digital GmbH
  • Agile team coach for a brick-and-mortar retail team
  • Coaching, lateral leadership and facilitation
  • Establishing agile values and applying agile methods
  • Team development and conflict moderation
  • Facilitating company-wide strategy workshops
  • Technologies: Kanban, Scrum, Microsoft Teams, Liberating Structures, Jira, Confluence, Concept Board, Miro, Test-Driven Development, OOP, DBMS (SQL, MySQL, MariaDB, PostgreSQL)
Verified expert

Kay Odenthal

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Fullstack Developer

Köln
Kay Odenthal

Last position:

Fullstack Developer at INIT GmbH

  • Development of monitoring and control systems for public transport
  • Development of a platform for real-time monitoring of passenger information and ticketing systems and an application for remote control and status monitoring of access systems
  • Development of dynamic forms, complex tables, real-time dashboards (SignalR), and reusable components in the frontend (using Storybook)
  • Implementation of REST interfaces in the backend
  • Deployment to Microsoft Azure Cloud
  • Technologies used: Angular 20, Angular Material 3, Dev Extreme, Storybook, C#/.NET 10
Verified expert

Alexander Stier

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TYPO3 Senior Fullstack Developer, Backend & Frontend

Bergisch Gladbach
Alexander Stier

Last position:

TYPO3 Senior Fullstack Developer, Backend & Frontend at Vergleich.de Gesellschaft für Verbraucherinformation mbH via HALIAN GmbH

  • Typoscript
  • Extbase
  • Fluid
  • Typescript
  • requireJS
  • WebVital

Discover over 15,000 top freelancers

Statistics of experts using MariaDB

Aggregated from the professional profiles of matched freelancers.

Experience

21 years (Germany: 20 years)

Position duration

2.8 years (Germany: 3.1 years)

Positions per freelancer

17 (Germany: 14)

Top business areas

Information Technology, Product Development, Project Management

Top industries

Information Technology, Transportation, Telecommunication

Certification focus areas

Information Technology, Project Management, Quality Assurance

Bachelor's degree or higher

67% (Germany: 78%)

Master's degree or higher

33% (Germany: 43%)

Certifications per freelancer

3 (Germany: 2)

Most common languages

German, English, French

Speak two or more languages

100% (Germany: 97%)

Based on our profile pool as of 30 Aug 2026.

Daily rate distribution

0 1 2 3 4
<€640 €640-​720 €720-​800 €800-​880 €960+

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 MariaDB

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

800
600
400
200
Rate comparison chart
Daily rate avg. 754 €
Germany avg. 769 €

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

800
600
400
200
Rate comparison chart
Median rate 720 €
Germany median 760 €

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

Core use

MariaDB is a relational database for applications that need structured data, reliable transactions, and clear SQL access. Teams use it for customer records, orders, reporting, internal tools, and content-heavy systems. It is also chosen as a MySQL-compatible option for migrations and mixed database estates.

Typical work

  • Schema design for new services and legacy systems
  • Query tuning for slow reports and busy endpoints
  • Replication, clustering, and high-availability setups
  • Backup, restore, and disaster-recovery plans
  • Migration from MySQL or older MariaDB versions

Ecosystem skills

Strong MariaDB professionals work with SQL, indexing, storage engines, and transaction handling. They often know Linux, Docker, backup tools, monitoring, and version upgrades. They also understand how application code, connection pools, and ORM layers affect database behavior.

When to bring help

Companies bring in freelance specialists when queries slow down, schema changes become risky, or a migration must happen without downtime. In Cologne, this often fits teams that need short-term support for product systems, e-commerce back ends, or internal platforms. Remote work is common; on-site collaboration helps when a live cutover or incident review needs close coordination.

What good looks like

A strong MariaDB expert reads execution plans, spots missing indexes, and explains trade-offs in plain language. They keep changes safe with backups, staging tests, and rollback steps. They also document decisions so the team can maintain the database after the engagement ends.

Common outcomes

MariaDB work often ends with faster queries, cleaner data models, and a more stable release process. It may also include better replication design, clearer maintenance routines, or a smoother switch from MySQL. The best specialists leave the system easier to run, not just faster on one day.

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Frequently asked questions

Before you brief your next project: the most common questions about MariaDB.

MariaDB is used for applications that need structured data, transactional integrity, and standard SQL. Teams rely on it for order systems, customer data, reporting, CMS back ends, and internal business tools. It is also common in projects that need a MySQL-compatible database with open governance.

MariaDB started as a fork of MySQL and kept broad SQL compatibility, so many teams can migrate with limited code changes. The choice often comes down to feature set, release path, storage engine needs, and operational preference. A good specialist checks compatibility carefully before any switch.

A strong MariaDB specialist should know SQL, indexing, transactions, backup and restore, replication, and performance analysis. Useful adjacent skills include Linux, Docker, monitoring, and application-side connection handling. For migration work, knowledge of MySQL differences matters too.

Even a small MariaDB project benefits from expert help when the schema is already in production or the database is business-critical. Simple installs may only need setup support, while busy systems need deeper tuning and operational knowledge. The more sensitive the data and uptime requirements, the more valuable a seasoned specialist becomes.

Yes, most MariaDB work can be done remotely because schema review, query tuning, and backup planning do not require a desk in the same office. On-site time can still help during a cutover, incident, or workshop with local teams in Cologne. Many companies use a mix of both.

Look for evidence of real production work with MariaDB, not just general database theory. Good signs are clear examples of tuning, migration, replication, backup strategy, and troubleshooting under pressure. Ask how the specialist validates changes and how they protect data during maintenance.

MariaDB is often a practical fit for legacy MySQL systems when the application needs a compatible path forward. It can simplify operations if the team wants a more actively managed open-source database while keeping familiar SQL patterns. The main risk is version and feature drift, so compatibility testing is essential.

Companies usually bring in a MariaDB freelancer for migrations, urgent performance work, high-availability planning, or a temporary skills gap. That is useful when the task is focused and the internal team needs help now rather than a long onboarding process. It also works well when a local team in Cologne wants short, specialist support for a specific release or incident.

The average hourly rate of freelancers in Cologne, Germany who have used MariaDB in their recent projects is 94 €, which corresponds to a daily rate of about 754 € based on an 8-hour working day.

Of the freelancers in Cologne, Germany who have used MariaDB in their recent projects, 67% hold at least a Bachelor's degree and 33% hold at least a Master's degree.

On average, freelancers in Cologne, Germany who have used MariaDB in their recent projects have 21 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 MariaDB in their recent projects are German (100%), English (100%), and French (11%).

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

The most common business areas among freelancers in Cologne, Germany who have used MariaDB in their recent projects are Information Technology (100%), Product Development (78%), and Project Management (67%).

Main locations of FRATCH Experts, who have recently used MariaDB

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

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