CentOS Experts
in minutes with the power of AI and vetted availabilityHire experts who keep CentOS servers stable, secure, and ready for production. They handle package management, system hardening, service setup, and migration work with fast, precise matching to vetted, available freelancers.
Meet FRATCH Experts who have recently used CentOS
Khalid El Mansouri
Last position:
Lead Architect & Developer at kem-consulting
Development of an agent-based governance platform for the automated assurance of EU AI Act compliance and ODA-compliant orchestration of AI services in complex enterprise environments.
Design and implementation of an agent-based "Mission Control" framework (Aletheia Conductor) for autonomous state monitoring and process control.
Development of "Compliance-as-Code" (CaC) solutions based on OPA/Rego for system-wide enforcement of regulatory guardrails.
Integration of TM Forum ODA standards (TMF630, TMF622, TMF642) to ensure interoperability and standardization.
Building a highly available event-driven architecture using Redpanda and CloudEvents v1.0 for near-real-time event processing.
Implementation of an audit-proof "Evidence Chain" through cryptographic linking of trace logs in preparation for automated audits.
Tech Stack: Java 21 (Quarkus Native), TypeScript (Next.js), Redpanda (Kafka API), CloudEvents v1.0, OPA (Open Policy Agent) & Rego, TimescaleDB, ZincSearch, Redis, TM Forum ODA, Git, GitHub, Clean Code Development, Like-C4.
Waseem Sattar
Last position:
Solution Architect / Subject Matter Expert at FRMCS terminal device manufacturer
Participation in the EU-funded MORANE-2 project to validate the Future Railway Mobile Communication System (FRMCS) in real-life use cases: creation of the requirement specifications for TOBA as well as the associated test specifications.
Technologies: 5GS (Radio & Core), FRMCS, MCx (MCPTT, MCData, MCVideo), MC Gateway UE, MCx Priority/Security/QoS Management, ETCS, SIP, IMS
Markus Blohm
Last position:
Consultant, Technical Project Manager at Lanxess
- Project: ESU Windows and SQL Server consolidation / Configuration Management in ServiceNow
- Creation of an as-is analysis of all servers worldwide
- Creation of an as-is analysis of all SQL servers worldwide
- Creation of requirements analyses for SQL and server migrations
- Coordination of requirements with partners for migrations to Hyper-V (on-premises) or Azure Cloud
- Moderation of jour fixe meetings
- Creation of roadmaps and solution models for server migrations
- Setup of test scenarios
- Moderation of workshops for the introduction of a Global Admin Team
- Creation of data models (CMDB) in ServiceNow
- Conducting workshops for the CMDB data model
- Creation of solution models for the CMDB
- Creation of seamless configuration and work documentation for the CMDB
- Creation of reports for license management
- Creation of KPIs for data quality in ServiceNow
- Creation of a service catalog
- Moderation of workshops for creating service requests
- Interface between needs analysis and ServiceNow development team
- Systems used: Windows 7, Windows 10, Microsoft Office 365/2010, Windows Server 20xx, SQL Server 20xx, SharePoint, Azure Cloud, Hyper-V, ServiceNow, various tools
Arkadius Sikora
Last position:
AWS Pricing Platform / API & Integration Architecture at Porsche Digital
Development and evolutionary further development of a highly available, cloud-native microservice and integration architecture for dealer and retail processes in the Porsche Car Configurator.
Responsibilities
- Development of Java-/Kotlin-based backend, API, and integration components (Spring Boot)
- Integration of internal and external systems via REST/OpenAPI, GraphQL, Apache Kafka, and AWS SQS (synchronous and asynchronous)
- Implementation of stable, high-performance communication and data flows in a cloud-native platform architecture
- Processing of structured data formats (JSON, Protobuf, GraphQL schemas) based on existing API patterns
- Performance optimization of distributed microservices with reduced response times and higher operational stability
- Technical tests (unit, integration, and API tests) as well as error analysis in production-like environments
- AWS Infrastructure as Code with Terraform and AWS CDK
- CI/CD automation (build, test, and deployment pipelines) with GitHub Actions
- AI-supported feature implementation (GitHub Copilot Agent)
Label: Kotlin, Java 25, Spring Boot 4, Protobuf, TypeScript, AWS, Terraform, CDK, Apache Kafka, AWS SQS, REST/OpenAPI, GraphQL, JSON, PostgreSQL, Docker, GitHub Actions, Maven, Gradle, JUnit, Mockito, Testcontainers
RĂĽdiger Schulz
Last position:
Full-Stack Software Engineer / Consultant for Digitalization at ARTEVENT
Designed, built, and launched an internal event planning web application used by over 100 department leads for a large event, despite having no dedicated testing phase.
Ensured smooth, failure-free operation during first production use, leading to the tool being adopted for future events.
Automated catering calculations and related workflows, significantly reducing email communication and manual computation effort for meal planning.
Managed deployment and hosting on a Linux server using Coolify, including application setup and runtime operations.
Hired and guided a communication designer on UX while independently owning all technical decisions and implementation.
Khaled Massad
Last position:
Principal Cloud Solutions Architect II at Schrödinger GmbH
- Understand the customer’s business & technical requirements and translate them into system / technical requirements
- Design and implement Schrodinger’s applications on cloud systems, and experience convincing senior management and senior technical staff of the benefits of their journey with Schrodinger on the cloud
- Provide exceptional technical design and thought leadership, especially around AWS, GCP, and K8s architecture reviews, performance, high availability, cost, and security
- Deep understanding of the Well-Architected pillars and all best practices for building a secure, performant Schrodinger’s applications on the cloud platforms
- Lead technical workshops and advise customers on architectural and strategic IT decisions
- Ensure success in designing, building and migrating applications, software, and services on the cloud platforms
- Educate customers on best practices to ensure their solutions are designed for successful deployment in the cloud
- Work with other team members to ensure quality and customer success
- Define the tickets, tasks, and timelines of projects
- Collaborate with account managers to ensure that the projects are executed according to the defined plan and timeline
- Monitor the progress of the projects, identify risks and issues, and take proactive measures to mitigate them
- Lead and inspire cloud architect teams, provide guidance, and make critical decisions
- Facilitate effective communication and collaboration among team members
- Collaborate with Schrodinger’s managers to improve deployment, support, and configuration of Schrodinger’s applications
- Lead weekly standups and define priorities
Diego Espinoza
Last position:
RPG Software Developer from RPG III to Free Format
- Development of software and system support for RPG development.
- Development, optimization and maintenance of programs in RPG (RPG II to ILE Free Format).
- Performing integration tasks, data management as well as applying and managing system updates.
- User support and training to ensure smooth system operation.
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
Thomas Pätzold
Last position:
Unix/Linux Administrator at BDAV Verwaltungs GmbH
- Consulting and project management to build an AI-based automation platform for market data analysis
- Automated testing of financial data
- Market data automation with Python and N8N
- AI data integration and AI learning
- Use of Ollama and Qwen
- Data organization and database management
Olaf Radicke
Last position:
DevOps Architect / Consultant at Authority with increased security requirements
- Identification of requirements (legal, organizational, and technical)
- Design of solution architectures
- Evaluation of concepts and technologies
- Preparation of decision templates
- Architectural Decision Records (ADR)
- Coordination of implementation
- Review of implementations
- Documentation
Marcus Bonfigt
Last position:
Data Engineer at Deutsche Bahn AG via Scoore GmbH
- Development of ETL pipelines with Talend (7/ Enterprise)
- Development/adaptation of database schema/database functions (PostgreSQL)
- Development of GIT CI pipelines
Technologies: Talend Enterprise, Git, PostgreSQL, Dbeaver, SQL, PL-SQL, Liquibase
Alexandro Lahmann
Last position:
Senior Project Manager - RIS & PACS Replacement
- Replacement of a RIS and PACS system in combination with three different software solutions, with a focus on redesigning and further developing existing processes.
- Ensuring the interaction of the individual solutions and their integration into one overall solution to provide optimal support for medical staff in their daily work.
- Overall project management including coordination of three service providers.
- Use of technologies and solutions such as RIS, PACS, Smart Reporting, and Artificial Intelligence.
- Leading the RIS & PACS replacement in a hospital.
- Support with the communication strategy.
- Coordination of external and internal resources.
- Stakeholder management.
- Steering of steering committees.
Vitaliy Ryumshyn
Last position:
DevOps GitOps (temp) at Signal Iduna
- Responsible for Openshift/Kubernetes on-prem administration and developer support.
- Developed URP infrastructure automation with Python, Ansible, Kustomize and ArgoCD, Argo Workflow/Events stack.
- Wrote smoke and load tests for URP infrastructure utilizing Python, Kustomize and ApplicationSets.
- Helped to set up and deploy URP infrastructure in Google Cloud, GKE.
- Set up monitoring for URP and ArgoCD stack with Splunk Cloud.
- Performed system administration tasks across RedHat Linux, Kubernetes/Openshift, ArgoCD, GitLab, Bitbucket Enterprise, Kafka and MongoDB.
Patrick Waldschmitt
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
Michael Fecher
Last position:
Freelancer, Solution Architect at Schufa AG
- Helped to design the AWS infrastructure, integrated services and backend architecture for use cases of an on-premise solution and partial migrations to AWS with fast response times
- Implemented automated AWS integration test suites
- Implemented mission-critical components and delivered them before the deadline in a production-ready state with operation and monitoring concepts
- This 2-month subproject was about building a data-intense pipeline (5 TB) to be enriched continuously with data
- Designed and implemented reusable AWS CDK constructs to be used across the company’s teams to enable faster onboarding with AWS
- Coached on AWS topics, distributed software patterns, security, domain-driven design, agile collaboration and documentation to improve performance and collaboration
- Technologies: AWS, GitHub Actions, ETL, monitoring, operations, TypeScript, Python, AWS CDK, CloudFormation, Java, Docker, AWS ECS, AWS Lambda, serverless, Jenkins, DevOps principles
Discover over 15,000 top freelancers
Statistics of experts using CentOS
Aggregated from the professional profiles of matched freelancers.
Experience
23 years
Position duration
3.4 years
Positions per freelancer
15
Top business areas
Information Technology, Operations, Product Development
Top industries
Information Technology, Banking and Finance, Manufacturing
Certification focus areas
Information Technology, Project Management, Product Development
Bachelor's degree or higher
80%
Master's degree or higher
49%
Doctorate
10%
Certifications per freelancer
3
Most common languages
German, English, French
Speak two or more languages
99%
Based on our profile pool as of 6 Sep 2026.
Daily rate distribution
The chart shows how the daily rates of freelancers in this technology 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 using CentOS
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 6 Sep 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
About the technology
CentOS basics
CentOS is a Linux distribution used for servers, internal tools, and long-running infrastructure. It is often chosen when teams want a familiar Red Hat Enterprise Linux style environment for stable operations, predictable package management, and consistent administration across many systems.
Common work
- Set up web, database, and file servers
- Manage yum and dnf package workflows
- Configure services, users, permissions, and updates
- Harden systems and review access settings
- Support legacy CentOS Linux and newer downstream or replacement paths
When specialists help
Companies bring in CentOS experts when a server needs cleanup, a service breaks after an update, or a migration is due. That often includes moving from CentOS Linux to AlmaLinux or Rocky Linux, or aligning old builds with current operational standards.
Tooling and ecosystem
Strong professionals know systemd, SELinux, SSH, firewalld, cron, log files, and shell scripting. They also work with Apache, Nginx, MariaDB, PostgreSQL, and automation tools such as Ansible when CentOS sits inside a broader Linux estate.
What good work looks like
Good CentOS work is careful and repeatable. The right specialist documents changes, keeps services recoverable, checks package sources, and tests after every adjustment so production systems stay predictable.
Typical delivery
CentOS work often covers on-prem servers, VM fleets, and remote admin tasks that support internal business systems. In distributed teams, clear notes and time-zone overlap matter; for regulated environments, onsite collaboration may be preferred for access and change control.
Frequently asked questions
Questions about CentOS? Start with the answers below.
CentOS is used for stable Linux server work such as web hosting, internal applications, databases, and network services. Teams also use it for appliance-style systems and older environments that were built around Red Hat Enterprise Linux compatibility. It is a practical choice when reliability and familiar administration matter more than frequent change.
CentOS was long used as a downstream, community-built option with a Red Hat Enterprise Linux style workflow. Today many teams compare it with AlmaLinux and Rocky Linux for replacement paths, or with RHEL when they need vendor support and subscription-backed lifecycle management. A good specialist can explain the trade-offs for your current server estate.
A strong CentOS specialist usually brings shell scripting, systemd, SELinux, networking basics, and package management skills. Knowledge of Apache, Nginx, MariaDB, PostgreSQL, firewalld, and Ansible is often useful too. Those skills help with both day-to-day operations and migration work.
A CentOS project that only needs package updates or a small service fix may need a specialist with solid hands-on administration experience. Migration, hardening, or debugging across many servers needs deeper experience with Linux internals and change control. The more legacy the environment, the more important practical production work becomes.
Most CentOS work can be done remotely if the team has secure access, good documentation, and a clear change process. Onsite presence can help when hardware, strict access rules, or local operations teams are involved. For international teams, written handover notes and overlap in working hours matter a lot.
Ask which CentOS versions they have maintained, what they have migrated, and how they handle recovery if a service update fails. It also helps to ask about SELinux, firewall rules, package repositories, and backup testing. Their answers should show calm, specific troubleshooting rather than vague general Linux talk.
CentOS can still be useful in controlled environments, but many teams now choose AlmaLinux, Rocky Linux, or RHEL for new builds. The right choice depends on support needs, upgrade plans, and how much compatibility with existing Linux systems you need. A specialist can help you decide before you commit.
Look for clear change notes, clean rollback plans, and evidence that the CentOS environment stayed stable after updates. Good work usually includes sensible hardening, working services after reboot, and documentation that another specialist can follow. If they can explain failures and fixes plainly, that is a strong sign.
The average hourly rate of freelancers who have used CentOS in their recent projects is 104 €, which corresponds to a daily rate of about 830 € based on an 8-hour working day.
Of the freelancers who have used CentOS in their recent projects, 80% hold at least a Bachelor's degree, 49% hold at least a Master's degree, and 10% hold a doctorate.
On average, freelancers who have used CentOS in their recent projects have 23 years of professional experience, with a single engagement typically lasting around 3.4 years.
The most common languages among freelancers who have used CentOS in their recent projects are German (99%), English (99%), and French (22%).
The most common industries among freelancers who have used CentOS in their recent projects are Information Technology (96%), Banking and Finance (49%), and Manufacturing (48%).
The most common business areas among freelancers who have used CentOS in their recent projects are Information Technology (100%), Operations (75%), and Product Development (70%).
Main locations of FRATCH Experts, who have recently used CentOS
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 
Munich Request a free demo
Get in touch with the FRATCH team and we will get back to you within 4 hours.
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Philipp Thomaschewski
FRATCH CEO
