Apache Kafka Experts in Hamburg
for reliable event-driven systems, matched in minutes with vetted, available freelancersHire experts who design event-driven architectures, build Kafka Streams and Connect pipelines, and secure high-throughput data platforms. FRATCH uses precise AI matching to connect you quickly with vetted, available freelancers who fit your project.
Meet FRATCH Experts in Hamburg, who have recently used Apache Kafka
Niko S.
Last position:
Developing Architect, Technical Lead "gridlytics" at HH Energienetze
- Building a data integration platform for high, medium, and low voltage assets for contextual analysis of time series with master data from the SCADA control system (IEC 60870 104), INIS, and SAP.
- Responsibility for the architecture and implementation of the solution, as well as sparring partner for the Product Owner.
- Use of Kotlin, Spring Boot, Maven, TimescaleDB, PostgreSQL, liquibase, Elements IoT, Docker, Kubernetes, Grafana, Python, jupyter, and various API gateways.
Daniel S.
Last position:
Senior Software Engineer at energielenker solutions GmbH
- Designed and implemented a Python-based ETL pipeline with the Dagster framework to transform raw energy data from heterogeneous sources using InfluxDB and visualizations in Grafana
- Defined time-based and dependency-based jobs
- Deployed to managed Kubernetes clusters using Helm
- Integrated InfluxDB Cloud
- Prepared data for use in Grafana, including cleaning, normalization, and time-based resampling in Python
- Developed dashboards and visualizations in Grafana
- Developed unit tests with mocking using pytest
- Set up a CI/CD pipeline in GitLab
Technologies: Python, Dagster, InfluxDB, Grafana, pandas, pytest, REST, CI/CD, GitLab, Container, Kubernetes, Helm, Docker, Cloud
Cornelius H.
Last position:
Solution Architect at STIHL
- Remodeling of the system architecture for an Azure-based platform aimed at rapid development of new functionalities
- Modeling of a staging concept for the fulfillment of diverse customer and QA needs
- Creation of requirements for, and oversight of, a proof-of-concept supplier project for a Flutter app with highly advanced BLE functionalities
- Comparison of multiple observability platforms for feasibility and requirements fit within the project environment
- Creation of a mobile app architecture based on domain-driven architecture
- Position of technical advisor and accountable solution architect for two development teams
- Execution of architecture reviews and alignment of changes with architectural expectations
- Skills & Technologies: Microsoft Azure , App Services, NodeJS Mono-repository, microservice architecture, domain driven design, self contained systems, requirements engineering, CI/CD, DevOps, API design, solution architecture
Lutz H.
Last position:
Fractional CTO, Interim Engineering Manager, Architect at independent
Strategic technology leadership and architecture consulting.
- Fractional CTO & interim management for startups, scale-ups, and enterprises – technical strategy, team building, architecture oversight, and delivery.
- Architecture consulting on cloud-native, distributed, and event-driven systems: reviews, design partnerships, and ongoing advisory.
- Event-driven architecture training – a hands-on 2-day course for engineering teams
- Conference speaker on distributed systems
Rainer D.
Last position:
Enterprise Architecture Management / Backend Software Developer at Polizei Hamburg
- Several projects in a police context
- Model and document police procedures/projects with Archimate (as-is/to-be) in the context of P20 (BKA)
- Create software architectures with microservices
- POC development with Springboot/Docker/Kubernetes
- Project size: 10 people
- Enterprise architecture management with Togaf and Archimate
- Backend software development Springboot
- DevOps with Kubernetes
- Implemented using: Java 17/21, Springboot 3, P20 architecture, Togaf, Archimate
Raphael V.
Last position:
Tech- / Team Lead / Architect / Engineer at Freelance IT Consultant
- Independent Software Engineer focusing mainly on complex backend architectures.
Felix O.
Last position:
Cloud Architect at uni-assist e.V.
- Project lead ‘Cloud Migration’ for moving the on-premise production environment to Scaleway.
- Transformed a Docker-Swarm legacy setup to a modern Kubernetes-based cloud environment.
- Architected a GDPR-compliant cloud landscape and deployment setup – 100% European sovereign cloud.
- Hands-on bootstrapped the cloud environment with Terraform, ArgoCD, and GitLab Pipelines CI/CD.
- Replaced the legacy VPN with modern mTLS PKI and deep AD integration.
- Managed an 11-headed agile team using Kanban, moderating team meetings and plannings.
- Successfully finished the migration, moving infrastructure, services, and data, from planning to execution.
Patrick V.
Last position:
Senior Director, Retail Media at EUROBAUSTOFF Handelsgesellschaft mbH & Co. KG
- Strategic consulting on marketing funds (WKZ) and retail media, focusing on monetization opportunities and data-driven business models
- Conducting a portfolio analysis of existing WKZ measures to assess the revenue and ROI impact of WKZ investments on supplier performance
- Potential analysis of digital WKZ products and initiatives to identify growth and efficiency levers
- Preparing and presenting the results to management and deriving a strategic move-forward plan
- Designing and facilitating several executive workshops to develop a holistic retail media vision and transformation roadmap
- Defining and prioritizing retail media business cases for data-driven evaluation of investment options
- Developing a technical target architecture considering heterogeneous ERP infrastructures and designing an integrated loyalty program
- Designing change management, including impact analysis on organizational structures and processes
- Creating and presenting C-level decision templates
- Establishing a clear retail media governance structure and technical foundation for data-driven marketing
- Developing a roadmap for implementation in 2026
Bastian I.
Last position:
Senior Backend Engineer Go & Technical Consultant at Regulated trading system for digital assets
- Technical consulting to meet regulatory MiCA requirements for a digital trading platform
- Design and development of backend components and APIs to comply with transparency and auditability requirements
- Optimization of core functions in order execution and market data delivery with a focus on performance and reliability under high load
- Conducting job interviews and structured onboarding of new developers
- Successful and timely implementation of the regulatory MiCA requirements, ensuring uninterrupted operations
- Reduction of user issues and common support requests by fixing complex backend problems
- Strengthening the development team through effective onboarding, mentoring, and knowledge sharing
Andreas S.
Last position:
Solution Architect, Business Analyst, Consultant, Full-Stack Lead-Developer at 50Hertz Transmission GmbH
- Solution for micro-service and frontend solution for the electric grid
- Leading of development teams
- Technologies: React-Native, TypeScript, Kotlin, AWS, Infrastructure As Code, Serverless Architecture, React, NoSQL, GraphQL, Angular, Playwright, Python, ML(Ops), Kubernetes, Docker
Marcel S.
Last position:
Lead Developer / Software Architect at Rezeptprüfstelle Duderstadt GmbH
Responsible for the new development of billing and auditing software for prescriptions (prescriptions) to fully check and evaluate e-prescriptions for correctness (content, billing)
The system consists of several contexts that run as services (Docker containers):
Checking and processing data deliveries via FTP and email
Managing invoices, clearings, advance payments and deductions
Managing and running audit rules and audit folders
Evaluations based on Metabase
Developer Stack: Kotlin, Vue 3 / Vuetify 3, ANTLR, Spring Boot 3, REST API, Gradle, Docker, GitLab, PostgreSQL, Kafka, Keycloak, Scrum, Grafana, Loki, Testcontainers, Prometheus
Jürgen B.
Last position:
Software Developer at Inform AG
- Coaching junior developers
- Further development and customer-specific extensions of a standard software product (microservices (DDD) and partly monolith)
- Interface extensions
- Web services
- Test automation
- Design
- Technologies used: Java8, Java17, TypeScript, Python, PostgreSQL, Spring (Integration, Data, Boot), JPA, AWS (Cloud, Lambda, EC2, SQS/SNS), Microservices, Fitnesse/Cucumber, Gitlab
Sven B.
Last position:
Frontend Developer at TQGG
- Reimplementation of the ESN.com online shop with Shopify's Hydrogen and Remix
- Headless CMS Contentful integration via GraphQL
Mark P.
Last position:
Full-Stack Software Developer, Product Data Import at Otto (GmbH & Co KG)
- Manage and operate the product data import services for the Otto merchant
- Enhance and maintain the backend systems
- Optimize and maintain AWS infrastructure
- Build a new product data import API
- Design and plan stories and features
- Conduct code reviews to ensure code quality and best practices
- Analyze and fix bugs
- Technologies: Java, Spring Boot, Kafka, AWS, Fargate, Terraform, MongoDB, Mongo Atlas, OpenAPI, GitHub, GitHub Actions, GitHub Copilot, Akhq, Debezium, JUnit, Test Containers, Hexagonal Architecture
Bharathi V.
Last position:
Senior Software Engineer (Individual Contributor) at European XFEL
- Electronic logbook app developed for research centers to maintain their investigations.
- Emphasizes user-driven organization of communication: experiment groups can configure information structure and notifications, while principal investigators maintain full access control.
- Real-time integration with the facility’s metadata catalogue, control system Karabo, and data analysis tool enables the automatic logging of key events, complemented by manual entries as needed.
Discover over 15,000 top freelancers
Statistics of experts using Apache Kafka
Aggregated from the professional profiles of matched freelancers.
Experience
20 years (Germany: 18 years)
Position duration
1.9 years (Germany: 2.7 years)
Positions per freelancer
17 (Germany: 13)
Top business areas
Information Technology, Product Development, Quality Assurance
Top industries
Information Technology, Retail, Banking and Finance
Certification focus areas
Information Technology, Product Development, Project Management
Bachelor's degree or higher
87% (Germany: 91%)
Master's degree or higher
47% (Germany: 55%)
Doctorate
7% (Germany: 9%)
Certifications per freelancer
3 (Germany: 2)
Most common languages
German, English, 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 Hamburg 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 Hamburg 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 (100%)
- Retail (67%)
- Banking and Finance (61%)
- Transportation (44%)
- Professional Services (39%)
- Healthcare (33%)
- Manufacturing (33%)
- Telecommunication (33%)
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 continuous flows of data. Companies use it to connect services, capture business events, power real-time dashboards and move data between operational systems. Its durable log supports replayable events and decoupled communication across complex architectures.
Kafka ecosystem
Kafka projects often combine core brokers with Kafka Connect, Kafka Streams and Schema Registry. Strong specialists also work with Avro, Protobuf or JSON schemas, REST interfaces, ksqlDB, Kubernetes and cloud storage. They select partitioning, replication, retention and serialization settings that match the workload and operational model.
Common delivery work
- Design topics, partitions, consumer groups and event contracts
- Build Kafka Connect integrations for databases, APIs and data lakes
- Develop stream processing with Kafka Streams or ksqlDB
- Configure monitoring, alerting, access control and disaster recovery
- Migrate legacy messaging or batch pipelines to event-driven flows
When expertise matters
Companies bring in freelance Apache Kafka specialists when event volumes, integration complexity or reliability requirements outgrow an initial setup. They may need help untangling consumer lag, failed deliveries, schema changes or an overloaded cluster. In Hamburg, this work can support logistics, manufacturing, media and digital services while teams collaborate remotely or on site.
Adjacent capabilities
A capable professional understands more than broker configuration. Look for practical knowledge of Java, Scala or Python, distributed systems, Docker, Kubernetes, Linux and cloud services. Experience with observability tools, identity management, CI/CD, data governance and databases helps connect Kafka to the wider production environment.
Signs of quality
Strong specialists explain trade-offs in plain language and design for failure from the start. They test ordering, retries, idempotency, rebalancing and recovery instead of relying on happy-path demos. They document event contracts, measure consumer lag and leave a maintainable operating model for the internal team. Clear German or English communication also matters when Hamburg-based stakeholders and remote specialists work together.
Frequently asked questions
Not sure where to start with Apache Kafka? These answers cover the essentials.
Apache Kafka is used to move and process event data between services, applications and data stores. Typical projects include real-time analytics, order and logistics flows, customer activity tracking, fraud detection and integration between microservices.
Apache Kafka is built around a durable, replayable event log and high-throughput stream processing. RabbitMQ and traditional queues can be a better fit for task distribution, routing and short-lived messages, while Kafka is often chosen when many consumers need the same event history.
A strong Apache Kafka specialist often brings experience with Java, Kafka Streams, Kafka Connect, Schema Registry and cloud infrastructure. Kubernetes, Docker, Linux, CI/CD, observability, databases and security are also valuable when the platform runs in production.
The right level depends on the system’s criticality, scale and migration risk rather than on a fixed number of years. A small integration may need focused configuration skills, while a multi-team platform requires proven knowledge of partitioning, replication, recovery, governance and performance analysis.
Apache Kafka work is often suitable for remote collaboration because configuration, code reviews, testing and monitoring can be handled online. On-site workshops in Hamburg may still help with architecture decisions, domain alignment or coordinated migration planning.
Ask how the specialist handles ordering, retries, idempotency, schema evolution, consumer lag and broker failure. High-quality work includes documented event contracts, meaningful monitoring, tested recovery procedures and clear ownership for topics and consumers.
No. Kafka Streams is useful when applications need stateful transformations, joins or windowed processing close to the event platform. Other projects may only use Kafka for transport and pair it with Flink, Spark, ksqlDB or a separate consumer service.
Apache Kafka is the open-source core project, while Confluent provides a commercial distribution and additional services around it. The two share Kafka’s central concepts, but the available connectors, governance features, managed operations and support model can differ.
The average hourly rate of freelancers in Hamburg, Germany who have used Apache Kafka in their recent projects is 104 €, which corresponds to a daily rate of about 834 € based on an 8-hour working day.
Of the freelancers in Hamburg, Germany who have used Apache Kafka in their recent projects, 87% hold at least a Bachelor's degree, 47% hold at least a Master's degree, and 7% hold a doctorate.
On average, freelancers in Hamburg, Germany who have used Apache Kafka in their recent projects have 20 years of professional experience, with a single engagement typically lasting around 1.9 years.
The most common languages among freelancers in Hamburg, Germany who have used Apache Kafka in their recent projects are German (100%), English (100%), and French (6%).
The most common industries among freelancers in Hamburg, Germany who have used Apache Kafka in their recent projects are Information Technology (100%), Retail (67%), and Banking and Finance (61%).
The most common business areas among freelancers in Hamburg, Germany who have used Apache Kafka in their recent projects are Information Technology (100%), Product Development (94%), and Quality Assurance (78%).
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.
Berlin 
Munich 
Cologne 
Frankfurt 
Stuttgart 
Dusseldorf 
Nuremberg Request a free demo
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