Apache Kafka Experts in Vienna
for reliable event streaming, matched in minutes with vetted and available freelancersHire experts who design event-driven architectures, build reliable Kafka Streams pipelines and connect Kafka Connect integrations across cloud and on-premise systems. Get fast, precise matching with vetted, available freelancers for your Apache Kafka project.
Meet FRATCH Experts in Vienna, who have recently used Apache Kafka
Alexander P.
Last position:
Owner & Lecturer at Own company for AI governance and data products, Vienna
- Consulting and interim management at the interface between IT operations and regulation
- Impact analysis and implementation planning for NISG 2026 and the EU AI Act, including risk management and reporting and evidence processes
- Training for governing bodies and employees on regulatory obligations
- Lectures in Data & Information Management and Human-Machine Interaction at University of Applied Sciences Burgenland, since 2023
- Supervision of master’s theses and participation in the examination board
- Presentations for business and educational institutions
- Design and development of data and AI products, platforms and pipelines
- Privacy-first architectures and zero-knowledge encryption, cloud-native on EU infrastructure
- MLOps and AIOps in live operations
- Own applications under own brand: shared codebase, separate delivery for each target device
- AI-assisted software development (vibe coding), complete agentic pipelines, code generation, implementation, automated testing, CI/CD and release cycles
- Publications on the EU AI Act, NIS2, DORA, CRA and CER as an integrated governance system
- Publications on data sovereignty, cloud economics and industrial image processing
- AI governance / compliance: data quality, Responsible AI, EU AI Act readiness, risk classification, AI ethics
John A.
Last position:
Software Developer and DevOps Engineer at Bundesrechenzentrum (BRZ)
Refactoring and improving core APIs; implementing client change requests. Setting up metrics, traces, and logs monitoring infrastructure to support operations. Designing GitOps deployment and infrastructure as code. Applications and systems configuration in ArgoCD and Openshift. Confluence documentation of design, approach, and solution. Tech Stack: Java 8 & 21, Spring framework, JSP, JavaScript, Bash scripts, SQL, Grafana Stack, OpenTelemetry, Docker, DB2, Maven, Kubernetes Kompose.
Marcel S.
Last position:
Senior AI Engineer - Python at Insurance Company
Project Tech Stack: Python, AWS, Azure, FastAPI, openai, pandas, unittest/pymock
Achievements:
- Engineered automated data extraction pipelines to transform complex Excel datasets into structured formats via LLM-driven workflows.
- Architected a generative slide-deck engine that translates natural language prompts into formatted presentation assets.
- Integrated advanced LLM capabilities with the OpenAI Response API, implementing sophisticated tool-calling and structured output logic.
- Developed and containerized scalable backend microservice using FastAPI, Docker, and OpenShift to host and serve agentic skills.
Michail M.
Last position:
OpenShift Specialist, Developer at Insurance
Project goal: Introduce OpenShift as the run-time platform and migrate all applications to OpenShift.
My contribution: Make sure logging and monitoring for the applications were in place. Set up and put into operation the OpenShift components for logging and monitoring (Elasticsearch, Prometheus, and Grafana). Develop and implement the security concept for OpenShift. Work with developers to define and carry out the application changes needed for the OpenShift migration. Integrate monitoring into the applications.
Technical environment: Java, WebSphere Liberty, OpenShift components, Elasticsearch (ELK stack), Prometheus, Grafana.
Burak E.
Last position:
Senior Software Engineer at Nürnberger Versicherung
Further development of an insurance product quotation system
- Implementation and maintenance of pricing logic for property and casualty products (accident, property liability, business contents) based on Java and FaktorIPS
- Implementation of actuarial tariff revisions into product-specific calculation models
- Development and refactoring of backend components and web UI components
- Creation and maintenance of test tables and automated premium tests for quality assurance
- Code reviews and active involvement in quality assurance in the development process
- Production support and bug fixing in live operations
Benjamin A.
Last position:
Multi-Project Manager at Trading Company
- Setup of a new Data Warehouse (Budget ~€15M 2025 – 2026)
- Backend modernization project (Budget ~€5M 2025 – 2026)
- Standard software rollout with custom programming (Budget ~€9M 2025 – 2026)
Joseph W.
Last position:
Freelancer Cloud / Solution Architect (AWS) at A1 Bank
- I am responsible for providing solution architecture and technical assistance for a migration initiative aimed at transitioning to a new core banking system.
- The project involves replacing in-house development with a commercially available off-the-shelf core banking system operated as SaaS on AWS.
- Duties encompass solution design, technical coordination, supporting development teams, and providing IT support and troubleshooting.
- Managing over 10 global vendors and partners is crucial to project success.
- Technologies: VMWare ESXi, AWS, EKS Kubernetes, Mastercard Payment Transaction Service, Avaloq, A1 Telekom Austria infrastructure, CheckPoint FW, F5, Site-to-Site VPNs, PingID, Futurae SDK, Airlock, UC4/Automic, Firebase, iOS/Android lifecycle management, AWS IAM, AWS AppStream, AWS S3, AWS Transfer Family, QlikView, OpenAPI.
Maximilian K.
Last position:
Consultant at Specific-Group Austria
IT Seniors | .NET, Java | Freelance & employee possibilities | 80 - 100% Remote in Europe.
Who is the Specific Group?
- Sector: 70% Finance & Fintech - 30% Industry: KTM, Liebherr, Porsche, VW
- Over 20 Scrum teams enable project changes instead of company changes
- Over 200 technical colleagues in Vienna (90% senior colleagues)
- 25 years in the IT market, 11 branches in Europe (450 technical colleagues in total)
- Technical focus: Java Spring, Kafka, AWS/Azure
Discover over 15,000 top freelancers
Statistics of experts using Apache Kafka
Aggregated from the professional profiles of matched freelancers.
Experience
21 years
Position duration
2.4 years
Positions per freelancer
11
Top business areas
Information Technology, Operations, Product Development
Top industries
Information Technology, Insurance, Banking and Finance
Certification focus areas
Information Technology, Project Management, Logistics
Bachelor's degree or higher
71%
Master's degree or higher
57%
Certifications per freelancer
4
Most common languages
German, English, Spanish
Speak two or more languages
88%
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 Vienna 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 Vienna using Apache Kafka
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.
Apache Kafka 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 (88%)
- Insurance (75%)
- Banking and Finance (63%)
- Government and Administration (63%)
- Transportation (50%)
- Manufacturing (50%)
- Healthcare (38%)
- Retail (38%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
Event streaming
Apache Kafka is a distributed event streaming platform for publishing, storing and processing streams of records. Companies use it to connect services, decouple applications and move operational data in real time. Kafka supports durable event logs that can be replayed when systems need recovery or reprocessing.
Core architecture
Kafka organizes data into topics and partitions across a cluster of brokers. Producers write records, while consumers read them through consumer groups that share processing work. Strong professionals understand replication, retention, ordering, offsets and delivery guarantees so the platform remains reliable under changing workloads.
Ecosystem and tooling
Kafka projects often involve a broader ecosystem rather than the broker alone:
- Kafka Streams for stateful stream processing and transformations
- Kafka Connect for integrations with databases, storage and SaaS systems
- Schema Registry with Avro, JSON Schema or Protobuf contracts
- MirrorMaker for replication between environments or regions
- Observability, security and deployment with Kubernetes or cloud services
Where companies use it
Kafka commonly sits behind customer activity feeds, payment workflows, logistics events, fraud detection and data platforms. It can power service-to-service communication, change-data capture and near-real-time analytics. In Vienna, specialists may support financial, industrial, public-sector and digital businesses while coordinating with local teams or remote stakeholders.
When expertise matters
Companies bring in freelance expertise when a Kafka rollout must be designed carefully or an existing cluster is causing delivery, latency or operating problems. Typical signals include:
- Growing event volumes or overloaded consumers
- Unclear topic, partition or retention design
- Fragile integrations and inconsistent data contracts
- A migration from queues or point-to-point interfaces
- New requirements for security, monitoring or disaster recovery
What strong professionals deliver
Strong Apache Kafka professionals connect architecture decisions to business flows. They define event contracts, configure producers and consumers, test failure scenarios and document operational ownership. They also work confidently with Java, Scala, Python or Go, databases, Kubernetes, cloud infrastructure and CI/CD, while explaining trade-offs clearly to technical and non-technical teams.
Frequently asked questions
What clients ask us most about Apache Kafka — answered in short.
Apache Kafka is used to move and process streams of events between applications and data systems. It supports event-driven services, operational analytics, change-data capture, activity tracking and integrations that need durable, replayable data.
Apache Kafka stores ordered records in a distributed log, allowing multiple consumer groups to read the same data independently and replay it when needed. Traditional queues often focus on delivering a message to one consumer and removing it after acknowledgement, so the better choice depends on replay, throughput, ordering and processing requirements.
A strong Apache Kafka specialist usually understands event-driven architecture, distributed systems and data contracts. Useful adjacent skills include Kafka Streams, Kafka Connect, Schema Registry, Java or Python, SQL, Kubernetes, cloud infrastructure, monitoring and security.
The right level of Apache Kafka experience depends on the system’s criticality, topology and integration scope. A contained pipeline may need focused implementation skills, while a multi-team platform requires proven knowledge of capacity planning, failure recovery, governance and production operations.
Apache Kafka work is often suitable for remote collaboration because configuration, code, documentation and observability can be shared securely. On-site sessions in Vienna can still help with architecture workshops, stakeholder alignment or access processes, while clear communication in the agreed working language remains essential.
Kafka Streams is a good fit when processing logic should stay close to Kafka topics and run as part of an application. It supports filtering, joins, aggregations and stateful workflows without requiring a separate stream-processing cluster, though the team must still plan state stores, scaling and recovery.
Apache Kafka is commonly weighed against Apache Pulsar and RabbitMQ. Kafka is often preferred for durable event streams, broad ecosystem support and independent consumers, while Pulsar may suit specific multi-tenant or storage patterns and RabbitMQ can be simpler for task queues and routing-focused messaging.
Ask an Apache Kafka professional to explain a real design decision involving partitions, consumer groups, schemas, retries and failure handling. Strong answers connect technical choices to delivery guarantees, observability, security and operating costs, rather than treating topic creation as the complete solution.
The average hourly rate of freelancers in Vienna, Austria who have used Apache Kafka in their recent projects is 105 €, which corresponds to a daily rate of about 841 € based on an 8-hour working day.
Of the freelancers in Vienna, Austria who have used Apache Kafka in their recent projects, 71% hold at least a Bachelor's degree and 57% hold at least a Master's degree.
On average, freelancers in Vienna, Austria who have used Apache Kafka in their recent projects have 21 years of professional experience, with a single engagement typically lasting around 2.4 years.
The most common languages among freelancers in Vienna, Austria who have used Apache Kafka in their recent projects are German (100%), English (88%), and Spanish (25%).
The most common industries among freelancers in Vienna, Austria who have used Apache Kafka in their recent projects are Information Technology (88%), Insurance (75%), and Banking and Finance (63%).
The most common business areas among freelancers in Vienna, Austria who have used Apache Kafka in their recent projects are Information Technology (100%), Operations (88%), and Product Development (75%).
Main locations of FRATCH Experts, who have recently used Apache Kafka
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:
Vienna 
Graz Request a free demo
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