Apache Cassandra Experts in Munich
for resilient data systems, matched in minutes with vetted, available professionalsHire experts who design distributed data models, tune high-volume workloads, and connect Cassandra with streaming and cloud infrastructure. FRATCH matches you quickly and precisely with vetted, available freelancers who fit your project.
Meet FRATCH Experts in Munich, who have recently used Apache Cassandra
Markus B.
Last position:
Developer / DevOps, Consulting at A state authority in Baden-Württemberg / FSAS Technologies GmbH
Oracle Project Management and Automation
As part of the project, the operation of an Oracle infrastructure was automated by developing and enhancing Puppet modules and migrating existing Bash scripts to a standardized configuration management solution.
The aim of the project was to standardize and automate administrative processes, improve the maintainability of the Oracle platform, and increase the efficiency and traceability of infrastructure management through the use of Infrastructure as Code.
- Analysis and migration of existing Bash shell scripts to a Puppet-based automation solution
- Development and enhancement of Puppet modules for Oracle environments
- Automation of installation, configuration and operational processes using Infrastructure as Code
- Standardization and optimization of configuration management for Oracle systems
- Creation and maintenance of technical and operational documentation
- Planning, coordination and professional support during project implementation
- Operation and automation of Oracle systems on x86-based Linux server platforms
- Testing and quality assurance of the developed Puppet modules
- Analysis and resolution of technical errors as part of the automation and migration
- Close coordination with specialist departments and infrastructure teams to implement automation requirements
Technologies used: Puppet 7/8, SLES 15, Oracle 19, Oracle Grid, SVN, Windows Server, Confluence, VS Code, Ruby, Bash, Pass
Philipp G.
Last position:
Data Scientist & ML Engineer at Data-Science Factory GmbH
- Building, implementing and selling automated Data Science solutions such as Scorecard Factory and Forecast Factory
- Implementation of automated end-to-end cloud processes
- Development of LLM and NLP models
- Creation of interactive reports
- Support for national and international large corporations as well as medium-sized companies in implementing ML projects
Eli R.
Last position:
Technical co-founder at AskTheLaws
- Create an AI legal assistant with modern ML capabilities.
- Implement RAG architecture, with data pipelines for legal data search.
- Use AWS Bedrock for LLM and embedding models and LangChain/LangGraph
- Python with FastApi for backend and React for frontend
Enis S.
Last position:
Software Developer at 50Hertz Transmission GmbH
- Participated in the gradual modernization of components into cloud-native 12-factor applications.
- Worked closely with the business operations team to eliminate manual processes and resolve several performance bottlenecks.
- Designed and implemented a CI/CD pipeline to increase developer productivity, enforce quality and security checks, and automate product delivery.
- Migrated several components into the OpenShift Kubernetes cluster.
- Built a monitoring stack from scratch with Prometheus and Grafana to monitor services running in OpenShift.
- Developed dashboards in both Grafana and Splunk for operational transparency.
- Implemented an OIDC/OAuth2-based single sign-on (SSO) solution with Keycloak to secure multiple applications.
- Technologies: Java, Spring, Quarkus, Kafka, MySQL, Cassandra, Redis, Spring Data, Hibernate, Docker, Kubernetes, OpenShift, Keycloak, OIDC, OAuth2, Helm, Prometheus, Grafana, Splunk, Spark.
Biju K.
Last position:
Freelance AI Strategist & Governance Expert at DataSiens Freelancer
- Developed the AI strategy for a major Austrian retailer with over €10 billion in annual revenue.
- Developed a go-to-market strategy for AI services for a Norwegian consulting firm specializing in SAP technologies.
- Delivered AI for Business training programs to a leading German supermarket chain.
- Defined AI governance project structure and roadmap for a large German manufacturer.
- Certified facilitator for AI Design Sprintâ„¢, leading use case discovery workshops for large enterprises.
- IEEE Certified AI Ethics Assessor with expertise in building AI governance frameworks aligned with the EU AI Act.
- Founder of aiethicsassessor.com as knowledge base for AI governance and AI legislation.
- Author of a best-selling Udemy course on Data Architecture.
- Developed intelligent agents using low-code/no-code platforms to automate complex business processes.
Bela B.
Last position:
Full Stack Lead Developer, Backend Architect at Telefonica (O2)
The software supports the complete planning and approval of antennas for mobile telephony.
The system was implemented using an event-driven microservice architecture for cloud-native deployment with Quarkus on the backend, Kafka for communication, and Angular for the frontend. Services run on Kubernetes in Google Cloud. A special challenge was synchronizing with the legacy system still used by some users.
Janusz M.
Last position:
IoT Edge Computing / Self-Driving-Cars at Automotive consulting company
- Platform: Python ecosystem, RHEL 8, K10, AWS IoT Core, AWS Lambda, MLOps
- Software: Java JEE/cloud, IntelliJ IDEA, AWS IoT Core, AWS Edge and Lambda, AWS SageMaker SDK, Docker Compose, Kubernetes, OpenShift 4, Tekton, Flux, Helm charts, JSON/XML technology, Nginx, Apache Spark, OpenAI (GPT Plus, DALL-E 3, Whisper), GAN, GitHub Copilot, AI/machine and deep learning, Jupyter notebooks, TensorFlow 2, Colab, Keras API, Prometheus, Grafana, Conda, Python 3.9, PySci stack (NumPy, pandas, Scikit-learn, matplotlib)
- Responsible for webinar:
- IoT edge computing: architecture, components, resources, management
- IoT edge computing with MicroK8s, designing and creating flows/diagrams for AWS, three-step model for IoT ecosystem
- IoT processes, connectivity, data transfer and deployment, security
- Optimization of edge computing for IoT networks and services (AWS SQS queue, SNS notifications, events, analytics, buttons, device management/defender, Things Graph)
- Machine/deep learning frameworks (models, training, pipeline optimization, deployment in the cloud/at the edge (OpenShift), monitoring workloads with Prometheus and Grafana)
- Performance optimization for low latency/resilience using adaptive ML/DL/RL models for customer IoT data
- Analysis of large sensor data sets with Apache Spark, Kafka clusters
- Kasten K10 data management platform on Kubernetes multi-cluster with Helm chart, deployment, backup/disaster recovery (RTO/RPO), data lifecycle and security management
- Implementation of multilayer artificial neural network (ANN) with TensorFlow 2 and Colab for regression and classification; data analysis and provisioning for applications; development of models for testing and training, deployment of models
- Automation of business streamline processes with AI (Azure OpenAI, Discord bots/Zapier apps AI assistants (IntelliJ, GitHub Copilot))
Discover over 15,000 top freelancers
Statistics of experts using Apache Cassandra
Aggregated from the professional profiles of matched freelancers.
Experience
25 years (Germany: 20 years)
Position duration
2.4 years (Germany: 2.3 years)
Positions per freelancer
17 (Germany: 14)
Top business areas
Information Technology, Product Development, Business Intelligence
Top industries
Information Technology, Banking and Finance, Automotive
Certification focus areas
Information Technology, Product Development, Business Intelligence
Bachelor's degree or higher
100% (Germany: 94%)
Master's degree or higher
71% (Germany: 54%)
Doctorate
14% (Germany: 2%)
Certifications per freelancer
2
Most common languages
German, English, French
Speak two or more languages
100% (Germany: 98%)
Based on our profile pool as of 29 Oct 2026.
Daily rate distribution
The chart shows how the daily rates of experts in this technology in Munich 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 Munich using Apache Cassandra
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 29 Oct 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
Apache Cassandra 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 (71%)
- Automotive (57%)
- Government and Administration (57%)
- Retail (57%)
- Aerospace and Defense (43%)
- Media and Entertainment (43%)
- Professional Services (43%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
Distributed data at scale
Apache Cassandra is a distributed NoSQL database built for high availability, fault tolerance, and sustained write throughput. It spreads data across nodes and locations without relying on a single central server. Companies use it for telemetry, activity feeds, messaging, product catalogs, and other workloads that must remain responsive during failures.
Data modeling choices
Cassandra requires a query-first approach. Specialists design partition keys, clustering columns, replication strategies, and consistency levels around the access patterns an application actually needs. Good models limit hot partitions, avoid inefficient scans, and make reads predictable as data volume and traffic grow.
Ecosystem and operations
The technology connects with a broad data and infrastructure stack:
- Apache Cassandra clusters with multi-datacenter replication
- CQL, Java, Python, and application drivers
- Apache Spark, Kafka, and streaming pipelines
- Kubernetes, Docker, and cloud deployment patterns
- Monitoring with metrics, logs, and repair tooling
Professionals also work with backup policies, compaction, repair, capacity planning, and rolling upgrades.
When expertise matters
Companies bring in freelance expertise when a cluster must be designed, migrated, stabilized, or scaled without disrupting production. Typical needs include replacing a relational workload, correcting an unsuitable partition model, improving repair routines, and investigating latency or uneven node load. Munich teams may combine remote delivery with on-site workshops for architecture and handover.
Delivery and collaboration
Strong professionals clarify consistency requirements, failure domains, retention rules, and expected query patterns before changing the cluster. They document data models and runbooks, test node loss and recovery, and define safe procedures for migrations and schema changes. For teams in Munich, clear English communication and practical coordination with local product and infrastructure groups can be important.
What quality looks like
A capable Cassandra specialist explains trade-offs rather than treating the database as a direct relational replacement. They can read metrics, trace a slow query to its data model, and distinguish application pressure from compaction or repair issues. Look for evidence of production work involving replication, observability, capacity planning, and controlled failure testing.
- Clear partition and replication decisions
- Tested recovery and operational procedures
- Measured performance improvements
- Maintainable documentation for the internal team
Frequently asked questions
Everything clients usually want to know about Apache Cassandra, in one place.
Apache Cassandra is used for always-on applications that need distributed storage and predictable performance at high write volumes. Common examples include event data, recommendations, messaging, IoT telemetry, and user activity streams.
Apache Cassandra favors availability, horizontal scale, and query-specific data models rather than joins and flexible ad hoc queries. A relational database is often a better fit for strongly relational data, complex transactions, and reporting that changes frequently.
Apache Cassandra offers a distributed, open-source model with broad deployment flexibility and strong control over topology. DynamoDB provides a managed cloud service, while MongoDB uses document-oriented modeling; the right choice depends on query patterns, operations, consistency needs, and hosting requirements.
A strong Apache Cassandra freelancer should understand CQL, data modeling, replication, compaction, repair, and observability. Experience with Kafka, Spark, Kubernetes, cloud networking, and application drivers is also useful when the database sits inside a larger data platform.
The required depth depends on the risk and scope of the work. A schema review may need focused database expertise, while a production migration or multi-datacenter rollout calls for a professional who has handled failure recovery, capacity planning, and operational automation with Apache Cassandra.
Yes. Apache Cassandra design, reviews, monitoring analysis, and documentation can usually be handled remotely with secure access and clear runbooks. On-site sessions in Munich can still help with workshops, incident handover, and coordination across product and infrastructure teams.
Ask how the professional would choose partition keys, validate consistency, test node loss, and handle repairs. Strong Apache Cassandra specialists use production evidence, measurable diagnostics, and documented recovery procedures rather than relying on generic tuning advice.
A Cassandra specialist may deliver a data model, cluster topology, migration plan, monitoring setup, backup and repair procedures, or a performance investigation. The deliverables should explain operational risks and give the internal team safe steps for ongoing maintenance.
The average hourly rate of freelancers in Munich, Germany who have used Apache Cassandra in their recent projects is 99 €, which corresponds to a daily rate of about 792 € based on an 8-hour working day.
Of the freelancers in Munich, Germany who have used Apache Cassandra in their recent projects, 100% hold at least a Bachelor's degree, 71% hold at least a Master's degree, and 14% hold a doctorate.
On average, freelancers in Munich, Germany who have used Apache Cassandra in their recent projects have 25 years of professional experience, with a single engagement typically lasting around 2.4 years.
The most common languages among freelancers in Munich, Germany who have used Apache Cassandra in their recent projects are German (100%), English (86%), and French (29%).
The most common industries among freelancers in Munich, Germany who have used Apache Cassandra in their recent projects are Information Technology (100%), Banking and Finance (71%), and Automotive (57%).
The most common business areas among freelancers in Munich, Germany who have used Apache Cassandra in their recent projects are Information Technology (100%), Product Development (86%), and Business Intelligence (71%).
Main locations of FRATCH Experts, who have recently used Apache Cassandra
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 
Berlin Request a free demo
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