
Unix Experts in Berlin
matched in minutes from over 15,000 CVs with the power of AIHire experts who design reliable Unix environments, automate shell-based operations, harden production systems and support POSIX-oriented applications. FRATCH matches you quickly and precisely with vetted, available freelancers for focused delivery or long-term collaboration.
Meet FRATCH Experts in Berlin, who have recently used Unix
Alexander Z.
Last position:
Senior Data Solutions Engineer at VMware Inc.
- Architected and deployed private cloud data platform on VMware vSphere, integrating Greenplum MPP, Apache Kafka, Kubernetes, and Apache Solr, and developed real-time ingestion pipelines with Kafka Connect and Schema Registry.
- Led Oracle Exadata to Greenplum migration, rearchitected data models, optimized storage, implemented RabbitMQ with Debezium for CDC, and deployed VectorDB for Generative AI.
- Designed and executed multi-cloud migration PoC across AWS, Azure, and GCP, defined KPIs for throughput, latency, and cost efficiency, executed bulk data transfers, validated analytics and streaming workloads, and delivered full-scale architecture recommendations.
- Assessed legacy on-premises infrastructure and designed modern cloud-native data platforms using Greenplum and containerized microservices, advising on scalability, disaster recovery, and high-availability.
Toralf C.
Last position:
IT Consultant in PKI Software Development at BWI
- Implementation of a full-stack application with Angular as the frontend framework and Java as the backend language
- Use of the Swagger OpenAPI specification for REST communication between the frontend and backend applications
- Control of a card printer via the Nexus Card SDK framework
- Design and implementation of card management software with a web interface and a JavaFX module for printer monitoring
- Use of Cucumber tests for test automation and creation of test artifacts to test outside the development environment
- Use of Wireshark for network investigations to analyze the API of a third-party product and to monitor the REST API of the self-developed software
Nikunjkumar P.
Last position:
Senior Java Backend Developer at Questax Professionals GmbH
- Provide the Price Listing Service team with prices for all cars and vans in different markets
- Adapt market-specific requirements such as taxes, government subsidies, campaigns
- Import and synchronize new prices for all new and existing cars and store them in the Redis datastore
- Support our product and on-call duty
- Daily business, development of new features, bug fixing
- Pair programming, code review, mob programming
- Develop POCs for new ideas
- Maintain and extend the backend
- DevOps tasks
- Run Kubernetes updates
- Adjust and further develop Kubernetes resources
- Develop and adapt Helm charts
- Adapt and update ArgoCD
- Maintain, adapt, and improve CI/CD
Heiko K.
Last position:
SAP development, Adobe form development at Arvato SE
- conversion of a function-group-based Adobe Interactive Forms framework to an object-oriented Adobe framework for documents in transport/logistics and dunning (FI)
- Adobe Lifecycle Designer 11.0.1 for SAP
- creating new and troubleshooting existing forms, function modules, programs, classes, and methods
- maintaining Smart Forms
- document printing, email sending, and file archiving
- message control for deliveries, orders, invoices, proforma invoices, and transports
- ticket system: Jira
- communication: Microsoft Teams
- migrating customers to a new SAP framework
- handling incident and change request tickets
- software: SAP ERP 6.0, SAP_ABA 7.5G, S4CORE 1.05
Hendrik W.
Last position:
Software Test and Maintenance Support at Anton Paar ProveTec GmbH
- Add/create test specifications
- Conduct regression tests
- Conduct release tests
- Analyze Jira tickets
- Identify software defects and fix them with C#
André G.
Last position:
IT Consulting Project Management / Engineering Subproject Management at T-Systems (on assignment for government agencies)
- Projects for federal networks (NdB).
- CR management, EoL change requests, design and documentation according to ITSCM.
- Data center planning.
- Project management and engineering subproject management.
- Software development for virtual server environments according to BSI.
Lasya M.
Last position:
Data Engineer at Carelon Global Solutions (Elevance Health)
- Designed and implemented scalable ETL/ELT pipelines using Python, SQL, dbt, AWS and Informatica to ingest data from sources such as APIs, relational databases, and flat files into Snowflake, reducing pipeline runtime by ~30%.
- Migrated high-volume datasets from on-premises Teradata to Snowflake using AWS services (S3, Glue, Step Functions, IAM), ensuring data consistency and integrity.
- Applied Kimball methodology to design star and snowflake schemas, improving query performance and reducing Snowflake compute costs.
- Implemented automated data quality checks using SQL-based dbt tests and the Great Expectations framework to detect anomalies and enforce data correctness before production loads.
- Orchestrated ETL workflows in Airflow using Python and managed code deployments via Git with CI/CD best practices to increase deployment reliability and maintain pipeline uptime.
- Built interactive Power BI dashboards and curated datasets to enable data-driven decision-making for stakeholders.
- Maintained technical documentation in Confluence for ETL workflows, and led knowledge-sharing sessions for new joiners.
Beserithan M.
Last position:
SD Development and CRM Interaction Center Development at Sanner GmbH
- Part-time 2-3 days/week
- Developments in the SD module and CRM Interaction Center
- Consulting, customizing in SD module
- Adapting Fiori applications in the SD module
- Approval workflow for credit memos: design, concept, implementation, customizing
- Credit memo request: object type BUS 2094
- If the credit memo request value is below a certain threshold -> automatic release and removal of billing block
- If the credit memo request value is above a certain threshold -> automatic determination of the responsible employee
- The employee receives a work item in their integrated inbox or in My Inbox (Fiori) -> the employee can reject, approve, or edit the credit memo request
- UML modeling in technical documentation
- Creating a Z-table for customer sample line items
- Merging COA1 (delivery) + COA2 (CAQ) forms and adding to the spool request as a single PDF
- Correcting workflow title according to NACE, fixing message "ZBMA title is displayed incorrectly in SBWP (Workplace)"
- Receiving PLM documents from an external PLM system, creating an RFC function module, storing PLM documents in the material master as GOS objects
- On releasing a production order, reading PLM documents from MM and saving them in a shared folder for the MES system
- Displaying the number of inspection methods in a popup when creating an order -> VA01/VA02
- Automatic stock reconciliation LVS IDOC INVCON
- Performing AQUA tests
- IDOC archiving for old IDOCs
- NL_PM_drawings and storing print output, informing MES via ZPPORDER IDOC, writing technical documents
- Using SD user exits, BADIs for various requirements
- Extending screens for customer requests via screen exits
- Creating message types for sales orders, purchase orders, and invoices
- Extending CRM Interaction Center Business Partner -> Overview -> Contract with customer-specific requirements
- New Fiori application departure control with data from Z-table and standard equipment tables, displaying a pie chart, calculating "vehicles in operation"
- Extending Interaction Center Business Partner -> Overview -> new tab on Overview Page with list tables for performance feedback, attachments from GOS objects
- Extending Interaction Center Business Partner -> Overview -> new tab on Overview Page with list tables for PM quality notifications, attachments from GOS objects
- Implementing BADIs in CRM
- File storage on SAP server/UNIX server
- Using BOL/GENIL architecture in CRM development
- Project language: German
Ensar Y.
Last position:
Service Manager Microsoft Cloud Services (ITIL) at Industry (technology group)
- Took on the role of Service Manager for Microsoft 365 and Azure services
- Coordinated service providers in the areas of collaboration and security (Exchange Online, Teams, Azure AD)
- Monitored and optimized SLA-compliant operating processes (Incident, Change, Problem)
- Worked closely with internal IT management and integrated ITIL processes into Azure DevOps
- Microsoft Azure, Exchange Online, Teams, Azure AD, ITIL v4, Azure DevOps, Power BI, ServiceNow
Peter K.
Last position:
Hardware and Software Developer / Project Manager at Anonymer Kunde
- Development of control units for the automotive industry incl. embedded software
- CAN bus, Vector Tools, CANoe
- Support of the development process according to ISO 26262
- Ensuring cyber security standards:
- Key exchange (PKI) between vehicle and control units
- Hardware Security Module (HSM)
- Communication with external service providers (international)
- Development (PCB) of measuring adapters, statistical analysis of sensors
- IoT and embedded software development, backend administration
Shreyashi S.
Last position:
Warehouse Assistant at Adecco GmbH
- Sorting of customer orders
- Packaging and warehouse assistance
- Working late nights and weekends (130 hours/month)
Deependra P.
Last position:
Data Specialist at Cloud Factory
- As a Data Specialist, I leveraged analytical expertise to transform raw data into actionable insights, driving strategic decision-making and operational improvements. My role encompassed data interpretation, reporting automation, and cross-functional collaboration, utilizing advanced tools such as Microsoft Excel, Power BI, and Python for comprehensive data analysis.
- Implemented Python scripts to validate and reconcile large datasets, reducing manual errors and improving data reliability.
- Utilized Python (Pandas, NumPy, Matplotlib/Seaborn) to automate data cleaning, analysis, and visualization, improving efficiency and accuracy in reporting.
- Developed interactive dashboards in Power BI to present key metrics, trends, and performance indicators, facilitating real-time decision-making.
- Designed and executed automated reports using Excel (Pivot Tables, Power Query, VBA) and Power BI, ensuring data accuracy and consistency across departments.
- Data Analysis: Excel (Advanced Pivot Tables, Power Query), Power BI (DAX, Data Modeling), Python (Pandas, NumPy, Visualization Libraries)
- Automation & Reporting: Power BI Dashboards, Excel Macros (VBA), Python Scripting.
Thomas M.
Last position:
Lead Cloud Infrastructure Engineer at TrackCode GmbH
- Developing GitHub Actions/pipelines for automatic application deployment
- Supporting the provisioning of Helm charts for the CI/CD infrastructure
- Rebuilding and migrating a Kubernetes cluster using Rancher
- Creating IaC with Terraform for Kubernetes and additional services (monitoring, databases)
- Deploying a highly available Percona Galera cluster (MySQL)
- Implementing a centralized monitoring and logging infrastructure
Klaus B.
Last position:
Founder at unixtime.app
- Designed a tool for API developers to facilitate bulk timestamp conversion, born from IIoT microservice work with abundant Unix timestamps.
- Streamlined workflows by allowing copy-pasting of entire API requests to view and convert all timestamps in context.
- Enabled screenshot captures of conversions for sharing in collaborative spaces like Slack or JIRA.
- Evolved from a straightforward HTML file into a full-fledged Mac and Windows application.
- Open sourced the project to give back to the developer community.
Max E.
Last position:
Tester, Test Manager at Techniker Krankenkasse (TK)
- Quality assurance of the "Telematics Infrastructure Messenger (TI-M)" application
- Introduction of test management for the TI-M product
- Reviewing test requirements (gematik specification)
- Creating test documentation
- Defining different test levels
- Designing test scenarios in coordination with subject matter experts
- Test data management
- Responsible for test case specification from user stories
- Responsible for performing manual tests on various platforms (iOS & Android)
- Conducting release and integration tests
- Bug analysis and documentation
- Retesting bugs
- Skills: test management documentation, requirements analysis, frontend testing, mobile testing, Jira (TestFLO), Confluence, agile processes, Telematics Infrastructure Messenger, accessibility
Discover over 15,000 top freelancers
Statistics of experts using Unix
Aggregated from the professional profiles of matched freelancers.
Experience
21 years (Germany: 26 years)

Position duration
2 years (Germany: 3.2 years)

Positions per freelancer
19 (Germany: 18)

Top business areas
Information Technology, Product Development, Quality Assurance

Top industries
Information Technology, Professional Services, Healthcare

Certification focus areas
Information Technology, Business Intelligence, Product Development
Bachelor's degree or higher
83%
Master's degree or higher
50% (Germany: 49%)
Doctorate
13% (Germany: 11%)

Certifications per freelancer
1 (Germany: 3)

Most common languages
English, German, French

Speak two or more languages
100% (Germany: 98%)
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 Berlin 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 Unix rate benchmarks:
Explore rate insightsAverage rates of experts in Berlin using Unix
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.
Unix 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%)
- Professional Services (48%)
- Healthcare (44%)
- Automotive (41%)
- Education (41%)
- Banking and Finance (37%)
- Transportation (37%)
- Manufacturing (37%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
Unix foundations
Unix is a family of multiuser operating systems built around portability, strong process isolation, permissions and composable command-line tools. The name also describes the standards and design principles behind many Unix-like systems, including Linux, BSD and commercial UNIX environments. Companies use Unix foundations where predictable operation, scripting and fine-grained control matter.
Systems and workloads
Unix environments run core infrastructure rather than a single type of application. They support internet services, databases, developer tooling, scientific workloads, financial systems and embedded platforms. Common deliverables include stable production hosts, secure user and permission models, repeatable shell automation, service supervision and clear operational runbooks.
Ecosystem and tooling
Professionals work across shells, filesystems, process tools, networking utilities and package management. They often use Bash, KornShell, Perl, Python, SSH, Git, cron, systemd or traditional init systems, along with POSIX interfaces and observability tools. Depending on the environment, the wider stack may include Linux distributions, FreeBSD, OpenBSD, Solaris or AIX.
When to bring expertise
Freelance expertise helps when an environment is business-critical but internal capacity is limited or fragmented.
- Migrate services between Unix-like systems without avoidable downtime
- Standardize shell scripts, access controls and deployment routines
- Investigate performance, storage, networking or process failures
- Harden hosts and document operational procedures
Berlin collaboration
Berlin companies in software, research, media, finance and industrial technology may depend on Unix-based infrastructure behind customer-facing products and internal platforms. A local specialist can work on site when access, workshops or team alignment require it, while remote delivery suits audits, automation and documentation. Clear technical English is common in international teams; German can help with local coordination.
Signs of quality
Strong Unix professionals reason from observable system behavior instead of relying on assumptions. They understand permissions, signals, processes, filesystems, TCP/IP, name resolution and resource limits, then connect those details to business impact. Look for careful change control, reproducible scripts, security awareness and documentation another professional can operate.
- Explains trade-offs between Unix, Linux and BSD clearly
- Tests recovery paths instead of only the happy path
- Leaves readable automation and useful handover notes
Frequently asked questions
The facts hiring teams ask for most often when it comes to Unix.
Unix is used for operating servers, workstations, development environments, network services and specialized systems. Its command-line tools, permissions model and process architecture support reliable automation, hosting and administration.
Unix originally refers to a family of operating systems and a certified specification, while Linux is a Unix-like kernel used in many distributions. BSD systems provide their own Unix-like operating system families, often with tightly integrated base systems and distinct licensing and networking traditions.
A strong Unix specialist often works with Bash, POSIX, SSH, TCP/IP, DNS, Git, Python or Perl, storage and access control. Experience with monitoring, configuration management, containers and cloud infrastructure can also be important when Unix systems support a wider delivery stack.
The right level depends on the risk and scope of the work, not on the technology label alone. A migration, security review or production incident needs someone who can demonstrate comparable system changes, while a contained script or documentation task may need narrower specialist experience.
Unix work is often well suited to remote collaboration through SSH, version control, secure access procedures and shared documentation. On-site work in Berlin can still be valuable for hardware access, workshops, regulated environments or close coordination with operations teams.
A company may choose Unix when it needs a proven operating environment, mature command-line tooling, strong isolation or compatibility with an established commercial platform. The decision should consider application support, hardware, licensing, internal skills, vendor commitments and the cost of changing a stable system.
Ask how the professional diagnoses processes, permissions, storage, networking and resource limits, then request examples of documented changes or incident work. Good Unix specialists explain risks clearly, test recovery steps and leave automation that is readable, repeatable and maintainable.
Unix professionals commonly handle shell automation, system hardening, migrations, service reliability, performance analysis and operational documentation. They may also maintain legacy Solaris or AIX environments, support BSD systems or integrate Unix hosts with Linux, cloud and enterprise tooling.
The average hourly rate of freelancers in Berlin, Germany who have used Unix in their recent projects is 91 €, which corresponds to a daily rate of about 728 € based on an 8-hour working day.
Of the freelancers in Berlin, Germany who have used Unix in their recent projects, 83% hold at least a Bachelor's degree, 50% hold at least a Master's degree, and 13% hold a doctorate.
On average, freelancers in Berlin, Germany who have used Unix in their recent projects have 21 years of professional experience, with a single engagement typically lasting around 2 years.
The most common languages among freelancers in Berlin, Germany who have used Unix in their recent projects are English (100%), German (96%), and French (26%).
The most common industries among freelancers in Berlin, Germany who have used Unix in their recent projects are Information Technology (100%), Professional Services (48%), and Healthcare (44%).
The most common business areas among freelancers in Berlin, Germany who have used Unix in their recent projects are Information Technology (96%), Product Development (81%), and Quality Assurance (63%).
Main locations of FRATCH Experts, who have recently used Unix
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.
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