Jakarta EE Experts in Hamburg
, matched in minutes from over 15,000 CVsHire experts who design and deliver Jakarta EE services, REST APIs, secure web applications and cloud-ready enterprise platforms. FRATCH connects you quickly with vetted, available freelancers whose skills match your technical requirements.
Meet FRATCH Experts in Hamburg, who have recently used Jakarta EE
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
David A.
Last position:
Senior SAP Commerce Cloud Developer at Freelancer
- Integration of SAP Commerce Cloud with SAP Cloud for Customer
- Creation and execution of unit and integration tests
- Error analysis and bug fixing
Taher S.
Last position:
DevOps Engineer at Confidential
- Working with developers, security, and operations teams to align requirements
- Supporting product owners and development teams in using logging and monitoring solutions based on the Elastic Stack
- Developing and standardizing log schemas as well as defining practical standards for observability
- Designing and further developing logging architectures for complex, distributed multi-tenant environments
- Connecting application and infrastructure logs as well as security tools and metrics
- Optimizing data flows and modeling for analysis and reporting purposes
- Building automated infrastructures using Terraform/Terragrunt and Ansible
- Maintaining and further developing CI/CD pipelines in GitLab as well as automated development environments in Hetzner Robot
- Operating and automating Proxmox clusters including Ceph storage
- Setting up and operating Kubernetes (k3s) clusters on Fedora CoreOS including base services such as Vault, OpenLDAP, and HA Proxy
- Implementing security-critical infrastructures according to BSI baseline protection and securing existing systems
- Supporting the operation of solutions in cloud environments (including AWS)
- Working in agile teams using Scrum and Kanban
- Technologies/ applications: Elastic Stack (Elasticsearch, Logstash, Beats/Elastic Agent, Kibana), Terraform, Terragrunt, Ansible, GitLab CI/CD, GitOps, Proxmox, Proxmox Ceph, Kubernetes (k3s), OpenShift, Helm, Kustomize, Vault, OpenLDAP, HA Proxy, Hetzner Robot systems, AWS, Prometheus, Grafana, Syslog Linux/Windows, Docker, NGINX, Apache Security & Compliance (BSI baseline protection, SIEM/SOC)
Rolf G.
Last position:
Developer & Designer at Security authorities
- Migration of a case processing system with numerous interfaces to other systems from Spring and Activiti to a Java JEE application
- Further development into a cloud application
- Consulting, development, requirements analysis, specification and design
- Coordination with upstream and downstream systems
- Data modeling, programming and implementation
- Support with code reviews and ensuring clean code in the PL/SQL context
- Documentation in Confluence
- Troubleshooting PL/SQL applications including log analysis, session tracing and performance profiling
- Optimization and tuning measures in the PL/SQL environment
- Knowledge transfer and onboarding of new employees
- Use of Jira for task management, progress tracking and sprint planning
Andreas S.
Last position:
Lead Developer at Software
- Extended the document management system with a standard CMIS (Content Management Interoperability Services) interface
- Implemented CMIS core services like navigation, access rights, search, CRUD operations, and versioning in Java
- Implemented based on RESTful / OpenAPI services
- Delivered as a fat-jar and native container image
- Deployed on-premises and serverlessly as an Azure Container Application using Terraform
- Improved team autonomy through infrastructure engineering and short feedback loops
- Established observability with OpenTelemetry, Azure Monitor, and Azure Logic Apps
- Introduced Terraform and trunk-based development processes
- Ensured quality with BDD tests in C# using SpecFlow and Testcontainers
- Created Azure DevOps pipeline integration tests
- Introduced cloud deployment processes
- Trained staff in cloud and Terraform
Maciej W.
Last position:
Senior Software Engineer at EQS Group GmbH
- Further development of the compliance products
- Role responsibility as a Senior Software Engineer
- Team size: 5 - 15 people
- Tools: TypeScript, Angular 18, Node.js, Nest.js, AWS, Kubernetes/Helm Charts/Docker, GitLab (CD/CI), Elasticsearch, MySQL, OpenAI, Java, RabbitMQ
Peter N.
Last position:
Pilot testing AI tools & sabbatical for house renovation
- Pilot testing local AI environments to explore local AI use cases and cloud-based AI solutions
- Evaluation of AI tools and techniques
- Use of local AI tools with own data sovereignty
- Prompt engineering
- Creation of example environments for speech-to-text, text-to-speech, text-to-image, text-to-video, and image-to-video
Tools: Grok, Perplexity, ChatGPT, Elevenlabs, Github, Ollama, HuggingFace, Open WebUI, Faster Whisper, LibreTranslate, WSL, Docker Desktop, Shotcut, Audacity, Sound eXchange, Ffmpeg, Coqui TTS, Pinokio, Stable Diffusion Web UI, ComfyUI, OWL, Void Editor
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.
Silke W.
Last position:
Head of Project Management and Consultancy at Systemtechnik GmbH
- Planning of projects and consulting services: professional, technical and commercial, focusing on transformation for public transport
- Identification and assessment of project risks with development of measures and recommendations for risk minimization and avoidance
- Evaluation of projects and reporting
- Execution of projects and delivery of consulting services on time, with required quality and within budget
- Project, hardware and consulting services forecasting
- Disciplinary and professional staff management
- Team development and coaching
- Resource planning across various locations
- Stakeholder management
- Client management with service and support
- Development of contingency plans
Matti L.
Last position:
FullStack Developer at Ing DiBa GmbH
- Developed and extended Fiori UI5/WebApps for areas such as general ledger, asset accounting, and others.
- Implemented backend logic and OData services for a new S/4 HANA system
- Analyzed the current state of SAP GUI transactions and derived suitable standard and custom developments
- Designed technical concepts and implemented custom UI5 apps in the Fiori Launchpad
- Automated OPA tests, extended and adapted standard Fiori apps
- Documented and created developer manuals in the wiki
- Conducted code reviews, approved and delivered software units via GitLab and SAP transports
Christopher S.
Last position:
Relaunch news platform Spiegel Online at Spiegel Tech Lab GmbH
- Implemented business relevant features for the news platform
- Performed technical consultancy for system architecture
Armin J.
Last position:
Managing Director/Partner at Disolpa GmbH
Marcel S.
Last position:
Product Manager | Product Owner | Guidewire Expert | Agile Leader
Guido S.
Last position:
Freelancer at IT Consulting GS
Discover over 15,000 top freelancers
Statistics of experts using Jakarta EE
Aggregated from the professional profiles of matched freelancers.
Experience
26 years (Germany: 23 years)
Position duration
1.9 years (Germany: 2.2 years)
Positions per freelancer
18 (Germany: 15)
Top business areas
Information Technology, Product Development, Project Management
Top industries
Information Technology, Banking and Finance, Transportation
Certification focus areas
Information Technology, Project Management, Product Development
Bachelor's degree or higher
83% (Germany: 92%)
Master's degree or higher
58% (Germany: 53%)
Doctorate
8% (Germany: 6%)
Certifications per freelancer
2
Most common languages
German, English, French
Speak two or more languages
93% (Germany: 96%)
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.
Discover detailed Jakarta EE rate benchmarks:
Explore rate insightsAverage rates of experts in Hamburg using Jakarta EE
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.
Jakarta EE 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 (50%)
- Transportation (50%)
- Retail (50%)
- Automotive (43%)
- Insurance (43%)
- Manufacturing (43%)
- Professional Services (43%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
Enterprise Java foundation
Jakarta EE is the open standard for building secure, modular enterprise applications on the Java platform. It provides specifications for web interfaces, REST services, persistence, messaging, transactions and security. The technology was formerly known as Java EE and, before that, J2EE.
What it builds
Jakarta EE supports systems that need clear separation of concerns, reliable processing and long-term maintainability. Companies use it for customer portals, transaction-heavy back-office applications, integration services and APIs that connect internal and external systems.
- Design modular web applications and REST endpoints
- Implement transactional business processes
- Connect databases, messaging systems and external services
- Modernize Java EE applications under the Jakarta EE namespace
Ecosystem and tooling
Professionals work with APIs such as Jakarta Servlet, Jakarta REST, Jakarta Persistence, Jakarta CDI and Jakarta Security. Common runtimes include WildFly, Payara, Open Liberty and GlassFish, while Maven, Gradle, Docker and Kubernetes support repeatable builds and deployment. Strong specialists also understand application servers, relational databases, automated tests and observability.
When freelance expertise helps
Companies often bring in a freelancer during a platform migration, a major release, an integration program or a service decomposition project. External expertise is useful when an internal team needs to assess Java EE compatibility, move packages to Jakarta namespaces, improve application-server configuration or prepare workloads for containers and cloud environments.
- A legacy Java EE codebase needs a safe modernization plan
- Enterprise APIs require stronger security or test coverage
- Releases depend on complex server, database or messaging configuration
- A Hamburg team needs remote delivery with clear technical communication
What strong specialists deliver
A capable Jakarta EE specialist connects architecture with working software. They clarify specifications, choose suitable runtime features, document trade-offs and keep business logic independent from infrastructure. They also review deployment descriptors, persistence mappings, transaction boundaries and API contracts instead of focusing only on isolated code changes.
Choosing the right professional
Ask for examples of production systems with comparable integration, security and availability needs. Discuss the exact runtime, Java version, build process and migration status before work begins. For Hamburg-based collaboration, agree early on remote or on-site sessions, working language, repository access, review practices and ownership of technical documentation.
Frequently asked questions
Not sure where to start with Jakarta EE? These answers cover the essentials.
Jakarta EE is used to build secure, scalable enterprise applications on Java. Its specifications cover web requests, REST APIs, dependency injection, persistence, transactions, messaging and security, making it suitable for business systems with complex integration and reliability needs.
Jakarta EE is a specification-based ecosystem implemented by runtimes such as WildFly, Payara and Open Liberty. Spring Boot offers a more opinionated application framework with its own ecosystem, while Jakarta EE can provide strong portability across compatible runtimes; the right choice depends on existing skills, infrastructure and project constraints.
A strong Jakarta EE professional usually understands Java, Maven or Gradle, relational databases, REST design and automated testing. Experience with application servers, Docker, Kubernetes, messaging, security, monitoring and cloud deployment is valuable when the system must run beyond a local development environment.
A Jakarta EE freelancer is especially useful for application-server migrations, Java EE namespace changes, complex integrations and performance or security work. The project should involve someone who can assess the existing architecture, define a safe delivery plan and contribute production-ready changes rather than only resolve isolated defects.
Yes. Jakarta EE work is well suited to remote collaboration because source code, build pipelines, environments and tests can be shared digitally. Teams in Hamburg should define communication routines, access rules, review ownership and any need for occasional on-site workshops before the engagement begins.
Jakarta EE is the successor to Java EE, with the specifications now maintained under the Eclipse Foundation. The change includes the move from the javax namespace to the jakarta namespace, so migration may require code updates, dependency changes and runtime compatibility checks.
Ask a Jakarta EE specialist to explain decisions from a comparable system, including transaction handling, security boundaries, persistence, deployment and failure recovery. A quality professional can connect specifications to business risks, show disciplined testing and explain trade-offs in clear language.
Jakarta EE applications can run on compatible runtimes such as WildFly, Payara, Open Liberty and GlassFish. Support differs by release and profile, so a freelancer should verify the required specifications, namespace level, vendor extensions and deployment process before recommending a runtime.
The average hourly rate of freelancers in Hamburg, Germany who have used Jakarta EE in their recent projects is 96 €, which corresponds to a daily rate of about 770 € based on an 8-hour working day.
Of the freelancers in Hamburg, Germany who have used Jakarta EE in their recent projects, 83% hold at least a Bachelor's degree, 58% hold at least a Master's degree, and 8% hold a doctorate.
On average, freelancers in Hamburg, Germany who have used Jakarta EE in their recent projects have 26 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 Jakarta EE in their recent projects are German (100%), English (93%), and French (29%).
The most common industries among freelancers in Hamburg, Germany who have used Jakarta EE in their recent projects are Information Technology (100%), Banking and Finance (50%), and Transportation (50%).
The most common business areas among freelancers in Hamburg, Germany who have used Jakarta EE in their recent projects are Information Technology (100%), Product Development (93%), and Project Management (64%).
Main locations of FRATCH Experts, who have recently used Jakarta EE
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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