Jakarta EE Experts in Hamburg
matched in minutes with vetted, available specialists and the power of AI from over 15,000 CVs.Hire experts who know Jakarta EE, Enterprise Java, and API-based backends. They handle application servers, Jakarta REST, security, migration work, and long-lived business systems. Get fast, precise matching with vetted, available freelancers.
Meet FRATCH Experts in Hamburg, who have recently used Jakarta EE
Rainer Diekmann
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 Adamo
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
Rolf Gardewischke
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
Maciej Wilanowski
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 Neumann
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 Erchen
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 Wöhning
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 Lange
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
Taher Solimany
Last position:
DevOps Engineer at Confidential
- Collaborating with developers, security, and operations teams to align requirements
- Supporting product owners and development teams in deploying 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 evolving 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 running Kubernetes (k3s) clusters on Fedora CoreOS including core services like Vault, OpenLDAP, and HAProxy
- Implementing security-critical infrastructures according to BSI basic protection and securing existing systems
- Supporting the operation of solutions in cloud environments (e.g., AWS)
- Working in agile teams following Scrum and Kanban
- Technologies/Tools: 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, HAProxy, Hetzner Robot systems, AWS, Prometheus, Grafana, Syslog Linux/Windows, Docker, NGINX, Apache Security & Compliance (BSI basic protection, SIEM/SOC)
Christopher Schmidt
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 Jeyrani
Last position:
Managing Director/Partner at Disolpa GmbH
Marcel Schuetze
Last position:
Product Manager | Product Owner | Guidewire Expert | Agile Leader
Guido Schmetkamp
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: 22 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, Automotive, Banking and Finance
Certification focus areas
Information Technology, Project Management, Product Development
Bachelor's degree or higher
83% (Germany: 91%)
Master's degree or higher
58% (Germany: 51%)
Doctorate
8% (Germany: 6%)
Certifications per freelancer
2 (Germany: 3)
Most common languages
German, English, French
Speak two or more languages
92% (Germany: 96%)
Based on our profile pool as of 30 Aug 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 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 30 Aug 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
About the technology
Enterprise Java
Jakarta EE is used for business systems that need structure, security, and stable runtime behavior. It fits transaction-heavy services, internal portals, and backend systems that must integrate with other applications. Many teams still search for Java EE, so strong experts understand both names.
Common work
- Build REST services with Jakarta REST
- Set up persistence with Jakarta Persistence
- Configure security, transactions, and messaging
- Modernize older Java EE applications to Jakarta EE
- Support application server deployments and packaging
Ecosystem skills
Strong professionals work across the wider Java stack, not just the Jakarta APIs. They know application servers, Maven or Gradle, testing tools, logging, and CI pipelines. They also understand how to keep code clean when an application has many modules and shared libraries.
When to bring in help
Companies usually look for freelance expertise when a platform needs a migration, a release is blocked, or internal teams need extra capacity. In Hamburg, this often matters for organizations with complex backend landscapes, logistics workflows, or long-running enterprise systems. Clear documentation and direct communication help when work is hybrid or remote.
What good experts do
Good Jakarta EE specialists do more than write code. They read existing architecture quickly, spot brittle integrations, and keep changes safe for production. They also document deployment steps, configuration choices, and API behavior so the next handover is simple.
Choosing the right fit
Look for hands-on work with current Jakarta EE APIs, not only older Java EE knowledge. Ask how the expert approaches legacy code, server configuration, testing, and dependency updates. The best match can explain trade-offs clearly and deliver stable backend changes without adding noise.
Frequently asked questions
Not sure where to start with Jakarta EE? These answers cover the essentials.
Jakarta EE is used for enterprise backend systems that need transactions, security, persistence, and reliable integration. It often appears in internal business applications, API layers, and services that sit behind larger corporate systems. Teams choose it when stability and clear structure matter more than quick one-off code.
Jakarta EE and Spring both support serious Java backend work, but they differ in style and ecosystem. Jakarta EE is standardized and often fits organizations that want a common API layer across vendors and application servers. Spring is usually seen as more opinionated, while Jakarta EE is often preferred in established enterprise environments.
Yes. Jakarta EE evolved from Java EE, and many live systems, documents, and job briefs still use the older name. A strong specialist should understand that history, especially when migrating legacy code or reading older application server setups.
A good Jakarta EE specialist usually also knows Java, SQL, REST design, testing, and application server configuration. Experience with Maven or Gradle, security, and CI pipelines is also useful. For older systems, knowledge of EJB, JMS, and migration paths can matter a lot.
Companies bring in Jakarta EE experts when a migration is risky, an existing backend is hard to change, or delivery needs extra hands fast. Freelancers are also useful when internal teams know the business logic but need help with server setup, performance issues, or modernizing old modules. Short, focused engagements are common for these tasks.
Yes, most Jakarta EE work can be done remotely because the core tasks are code, configuration, and review. On-site time can still help during early discovery, sensitive production changes, or when teams need close coordination with local stakeholders. For Hamburg-based companies, a hybrid setup is often practical.
Look for someone who can explain past systems clearly and connect the APIs to real delivery work. A strong Jakarta EE professional should be able to discuss server choice, transaction handling, testing strategy, and how they manage legacy code. Concrete examples matter more than broad claims.
Jakarta EE fits projects that need durable backend services, integration-heavy workflows, and predictable deployment. It is a solid choice for business systems with clear domain rules, shared data access, and long-term maintenance needs. If the project is mostly simple content pages, another stack may be lighter.
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 767 € 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 (92%), and French (23%).
The most common industries among freelancers in Hamburg, Germany who have used Jakarta EE in their recent projects are Information Technology (100%), Automotive (46%), and Banking and Finance (46%).
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 (92%), and Project Management (62%).
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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Philipp Thomaschewski
FRATCH CEO
