Quarkus Experts in Hamburg
matched in minutes by AIHire experts who build fast-starting Java services, REST and reactive APIs, and container-ready applications with Quarkus, Kubernetes, GraalVM and SmallRye. Get precise access to vetted, available freelancers for your project.
Meet FRATCH Experts in Hamburg, who have recently used Quarkus
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.
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
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
Oliver L.
Last position:
Developer, Architect at libri GmbH
- Role: Developer, Architect
- Technologies: java, typescript, golang, spring (boot, web, security, data), Angular, AWS (OpenSearch, Aurora, SNS/SQS, CloudWatch, EC2, IAM), Kubernetes, Terraform, Helm, OAuth, Keycloak, CI/CD, gradlew, Liquibase, Test Driven Development, shell scripting
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
Christian H.
Last position:
Software Developer / Lead Developer at dpa (Deutsche Presse Agentur GmbH)
- Contributed to the development of the Rubix editorial system
- Implemented various microservices based on Java, AWS S3, AWS SQS, AWS SNS, and Spring Boot, deployed to AWS ECS and AWS Fargate
- Designed and developed AWS Lambdas using TypeScript
- Used PostgreSQL in an AWS RDS Aurora cluster and AWS DynamoDB
- Implemented continuous deployment with GitLab pipelines
- Built an Infrastructure as Code environment with AWS CDK
- Set up and maintained a monitoring platform using AWS CloudWatch
- Developed various frontend components with Vue.js
- Designed the microservice architecture applying Domain Driven Design and GraphQL interfaces
Johannes E.
Last position:
Libri GmbH
- Operation and further development of the inventory system for booksellers (Quimus). It is an in-house development by Libri that is sold to customers as Software as a Service. The software is developed in an agile way by two developer teams (about 5 developers each). The software consists of around 25 Java microservices that mainly communicate via messaging and share a common Angular frontend. The application runs on Kubernetes in AWS.
- Technologies used: Java 17 & 21, Spring Boot 2 & 3, Hibernate, MySQL, Spring Cloud AWS, Lombok, AWS SQS, AWS SNS, AWS RDS, AWS S3, DynamoDB, Kubernetes, Docker, OpenSearch, Hibernate Search, Liquibase, Gradle, Terraform, Helm, GitLab CI, Keycloak OAuth2, TypeScript, Angular
- My focus until December 2023: Connecting additional POS systems to the inventory system. Connecting the data warehouse for report display. Extending existing features (goods receipts, invoicing, item management, ...). Operations and DevOps tasks.
- Focus from January 2024: Extracting the product search from the inventory system into a global service to use in other applications. Integrating the product search into the booksellers' online shops (also run by Libri). Importing and providing digital items in the product search.
Frank W.
Last position:
Fullstack Software Developer at Goodright GmbH
- Built backend APIs using Quarkus, Kotlin, MongoDB, Docker Compose and NGINX
- Developed frontend with React, TypeScript and Ant Design
Discover over 15,000 top freelancers
Statistics of experts using Quarkus
Aggregated from the professional profiles of matched freelancers.
Experience
24 years (Germany: 20 years)
Position duration
1.9 years (Germany: 1.8 years)
Positions per freelancer
23 (Germany: 15)
Top business areas
Information Technology, Product Development, Business Intelligence
Top industries
Information Technology, Retail, Banking and Finance
Certification focus areas
Information Technology, Product Development, Business Intelligence
Bachelor's degree or higher
71% (Germany: 94%)
Master's degree or higher
43% (Germany: 54%)
Certifications per freelancer
1 (Germany: 4)
Most common languages
German, English, French
Speak two or more languages
100%
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 Hamburg 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 Hamburg using Quarkus
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.
Quarkus 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 (88%)
- Banking and Finance (63%)
- Transportation (63%)
- Energy (50%)
- Media and Entertainment (50%)
- Healthcare (38%)
- Manufacturing (38%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
What Quarkus does
Quarkus is a Kubernetes-native Java framework for building services that start quickly, use resources efficiently and scale cleanly in containers. It supports familiar Java standards such as Jakarta REST, CDI, JPA and MicroProfile while adding build-time optimization. Teams use it for APIs, microservices, event-driven services and cloud-native backends.
Core capabilities
Quarkus specialists typically deliver:
- RESTful and reactive APIs with RESTEasy Reactive
- Containerized services prepared for Kubernetes and OpenShift
- Native executables built with GraalVM or Mandrel
- Messaging services using Kafka and reactive patterns
- Persistence with Hibernate ORM, Panache and relational databases
The framework supports imperative and reactive programming, so teams can choose the model that fits each service rather than forcing one approach across an entire system.
Ecosystem and tooling
Quarkus works closely with SmallRye specifications, including Config, Health, Metrics, OpenAPI and Fault Tolerance. Specialists also work with Maven or Gradle, Testcontainers, Docker, Kubernetes, OpenShift and CI/CD pipelines. They should understand dependency extensions, configuration profiles, dev mode, continuous testing and the differences between JVM and native builds.
When companies hire specialists
External expertise is useful when a Java service must move into a container platform, when startup time or memory use matters, or when a team needs a safe path from an existing Spring application. Companies also bring in specialists to design service boundaries, introduce reactive messaging, troubleshoot native-image builds or prepare production observability. In Hamburg, this can support logistics, manufacturing, media and commerce teams while keeping collaboration remote, on-site or hybrid.
Signs of strong expertise
Look for professionals who can explain trade-offs instead of treating Quarkus as a simple dependency swap. Strong specialists can:
- Select extensions and remove unnecessary framework overhead
- Diagnose build-time versus runtime configuration problems
- Test native and JVM modes with realistic dependencies
- Tune health checks, telemetry, security and resource limits
- Plan reliable deployment and rollback workflows
Practical delivery experience matters more than familiarity with feature lists. Ask for examples of production services, migration decisions and incidents they resolved.
Project fit and delivery
A suitable specialist should clarify the target runtime, Java version, database, messaging system and deployment model before changing code. They should define API contracts, test boundaries and operational checks early, then document decisions for the resident team. Quarkus can reduce application overhead, but good results still depend on sound architecture, dependency discipline and careful validation under realistic load.
Frequently asked questions
Not sure where to start with Quarkus? These answers cover the essentials.
Quarkus is used to build Java applications that run efficiently in containers and Kubernetes environments. Common projects include REST APIs, microservices, event-driven services, serverless workloads and backend systems that need fast startup or low memory use.
Quarkus and Spring Boot both support production Java services, dependency injection, REST APIs, persistence and security. Quarkus emphasizes build-time processing, container efficiency and native compilation, while Spring Boot offers a broader established ecosystem and familiar conventions for many teams.
A strong Quarkus specialist should understand Java, Jakarta APIs, Maven or Gradle, REST design, testing and relational databases. Kubernetes, Docker, Kafka, observability, CI/CD and GraalVM or Mandrel are also valuable when the project targets cloud-native deployment.
The right Quarkus freelancer depends on the project scope and risk. A new service may need someone comfortable with extensions, testing and deployment, while a migration or native-image effort calls for proven judgment around compatibility, performance and production operations.
Quarkus projects are often suitable for remote or hybrid collaboration because source code, builds, tests and Kubernetes manifests can be reviewed asynchronously. Teams in Hamburg should agree on documentation, working hours, German or English communication and access to development environments before work begins.
Quarkus may be the stronger choice when a team wants deep Kubernetes and OpenShift integration, a wide extension catalog or close alignment with Jakarta and MicroProfile standards. Micronaut and Helidon can also fit lightweight Java services, so the decision should consider team skills, libraries, deployment targets and operational needs.
Ask a Quarkus specialist to explain extension choices, configuration scope, JVM versus native builds and failure handling. Review tests, API documentation, health checks, telemetry, security controls and deployment manifests rather than judging the work only by whether the service starts.
Quarkus can support migrations from existing Java services, but the effort depends on framework APIs, libraries, persistence, security and runtime assumptions. A capable specialist should first map compatibility, isolate changes, establish regression tests and propose an incremental migration instead of promising a direct conversion.
The average hourly rate of freelancers in Hamburg, Germany who have used Quarkus in their recent projects is 97 €, which corresponds to a daily rate of about 774 € based on an 8-hour working day.
Of the freelancers in Hamburg, Germany who have used Quarkus in their recent projects, 71% hold at least a Bachelor's degree and 43% hold at least a Master's degree.
On average, freelancers in Hamburg, Germany who have used Quarkus in their recent projects have 24 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 Quarkus in their recent projects are German (100%), English (100%), and French (13%).
The most common industries among freelancers in Hamburg, Germany who have used Quarkus in their recent projects are Information Technology (100%), Retail (88%), and Banking and Finance (63%).
The most common business areas among freelancers in Hamburg, Germany who have used Quarkus in their recent projects are Information Technology (100%), Product Development (100%), and Business Intelligence (88%).
Main locations of FRATCH Experts, who have recently used Quarkus
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
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Philipp Thomaschewski
FRATCH CEO
