Jakarta CDI Experts in Germany
matched in minutes by AIHire experts who design CDI-based application services, configure dependency injection, and connect Jakarta EE components such as REST, JPA and transactions. Get precise access to vetted, available freelancers for your project.
Meet FRATCH Experts in Germany, who have recently used Jakarta CDI
Timo H.
Last position:
Software Developer at Smiths Detection
- Extension of a Swing-based UI for recording Security Restricted Articles during baggage screening.
- Introduction of a new workflow for recording Deboarding Events.
- Extension of the reporting system for Security Restricted Articles and Deboarding Events.
- Implementation using JBoss Wildfly, PostgreSQL, spring-boot 3.x, Java 8/21, Swing, JSF, JAX-RS/Resteasy, Docker, Maven, Kiro.
Robert D.
Last position:
Software Architect at FinTech / Wealth Management
- Analysis of existing microservice structures and integration into the event-driven architecture
- Design and implementation of prototypes
- Introduction of structured workflows and integration into a solid testing strategy
- Team: Small specialized team (3-5 people) from analysis through implementation readiness
- Documentation of architectural decisions and definition of interfaces
- Integration of the event-driven pipeline into the existing landscape
- Technologies: Kafka, Docker, Microservices, Event-Driven Architecture, Java, Liquibase
Khalid E.
Last position:
Lead Architect & Developer at kem-consulting
Development of an agent-based governance platform for the automated assurance of EU AI Act compliance and ODA-compliant orchestration of AI services in complex enterprise environments.
Design and implementation of an agent-based "Mission Control" framework (Aletheia Conductor) for autonomous state monitoring and process control.
Development of "Compliance-as-Code" (CaC) solutions based on OPA/Rego for system-wide enforcement of regulatory guardrails.
Integration of TM Forum ODA standards (TMF630, TMF622, TMF642) to ensure interoperability and standardization.
Building a highly available event-driven architecture using Redpanda and CloudEvents v1.0 for near-real-time event processing.
Implementation of an audit-proof "Evidence Chain" through cryptographic linking of trace logs in preparation for automated audits.
Tech Stack: Java 21 (Quarkus Native), TypeScript (Next.js), Redpanda (Kafka API), CloudEvents v1.0, OPA (Open Policy Agent) & Rego, TimescaleDB, ZincSearch, Redis, TM Forum ODA, Git, GitHub, Clean Code Development, Like-C4.
Marcus B.
Last position:
Java and Quarkus Expert at Large German energy service provider
- Modernization of a large-scale Java enterprise application*
The project is modernizing a complex enterprise application that has grown over many years. The existing Spring-based legacy system runs on Java 8, OSGi, and Eclipse RCP and is being gradually migrated to a modern, maintainable architecture with Java 25 and Quarkus.
Marcus works on analysis, architecture, refactoring, and implementation. One focus is on untangling historically grown structures and dependencies and on building a clean, sustainable Java and Quarkus technology stack.
Tools & technologies: Java 8, Java 25, Quarkus, Hibernate ORM with Panache, EclipseLink, OSGi, Eclipse RCP, Maven, JUnit, Mockito, REST, JSON, Git, Eclipse IDE, IntelliJ IDEA Ultimate, Jira, Confluence
Sabahattin K.
Last position:
Sole responsibility (design, development, infrastructure, operations) at Own project busik.ch
- Ride-sharing and bus platform, live and fully functional. Backend with Spring Boot 4.1 on Java 21, PostgreSQL with Flyway, and Testcontainers integration tests. Hosted in my own AWS account (ECS Fargate, ALB, ECR, IAM Least-Privilege) with CI/CD via GitHub Actions and OIDC federation without static credentials. Development fully AI-supported with Claude Code, including custom skills and project-specific memory. Spring Boot · Java 21 · PostgreSQL · Flyway · Docker · AWS ECS/ALB/ECR · CI/CD · GitHub Actions · Claude Code
Osman T.
Last position:
Senior Architect, DevOps Engineer at genPsoft GmbH
IT consulting, analysis, architecture design, new and further development, code review, test automation, continuous integration, continuous delivery in backend and frontend areas for Automotive Project Instavalo.
Frontend:
- Implementation of UI components according to specifications, especially style guides and responsive design eith React and Typescript
- Component testing
- Code documentation
- CI/CD with Gitlab Pipeline
Backend / IoT:
- Analysis and architectural design with AWS Greengrass IoT on Edge Devices
- Setting up Microservices containers with Docker Compose on Edge device with AWS Greengrass and AWS IoT IAM, Token Exchange Service, Ansible
- CI/CD with Gitlab Pipeline, Terraform, AWS ECR
- Logging with Fluentbit Lua Language for AWS Cloudwatch
- Python Lambda for AWS Greengrass Recipe deployment on Edge Devices
- Implementation of test-driven development with JUnit, Mockito, and code Coverage
- Jacoco
- Definition of REST interfaces with OpenAPI / Swagger
- Development and enhancement of software based on Java Quarkus, Typescript NestJs NodeJs and Python
- Authentication and authorization in Aws IAM
- Development of REST and gRPC interfaces for the frontend and backend
- Implementation of Maven dependencies with DevSecOps OWASP
- Spring AI, Jetbrains AI Assistant, Junie, Github Copilot, Claude Code, Agents, Skills, Command, Hooks, Subagents
Hooman B.
Last position:
Fullstack Developer at Möbel Roller GmbH
- Further development of the existing e-commerce platform based on SAP Commerce (Hybris) to meet the growing demands of digital commerce.
- Ensuring the scalability and performance of the backend, so the platform remained stable and efficient even under heavy user load.
- Development and integration of new OCC REST APIs and services for modular extensions and flexible adjustments, to implement new features quickly.
- Optimization of data flows and interfaces, which significantly improved platform efficiency and system performance.
- Ensuring a maintainable and scalable code base by using Clean Code principles, proven design patterns, and a future-proof architecture.
- Reduction of errors through extensive testing with JUnit, Mockito, and load tests with Gatling, supported by the introduction of automated test processes.
- Improved system performance through targeted refactoring measures and efficient database queries, especially to handle peak loads.
- Use of modern cloud and monitoring tools such as Kubernetes, Google Cloud Platform (GCP), and Grafana to ensure a stable and monitored infrastructure.
- Clear improvement in efficiency, scalability, and reliability of the platform, which now meets the demands of a dynamic and growing e-commerce market.
Rolf G.
Last position:
Developer & Designer at Sicherheitsbehörden
- Migration of a case management system with numerous interfaces to other systems from Spring and Activiti to a Java JEE application
- Further development toward 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 of 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
Thorsten M.
Last position:
Odoo Implementer at N.N.
As project manager for the Odoo implementation at a small company, I was responsible for designing, implementing, and training a fully integrated CRM and accounting system. Through structured requirements analysis, precise data migration, and targeted change management, I was able to complete the rollout in just eight weeks. The project led to a significant reduction in manual tasks, faster business processes, and increased real-time transparency.
Main Responsibilities
Requirements analysis and process mapping Configuration of Odoo modules: CRM, Sales, and Accounting Data migration (Excel/CSV → Odoo) and quality control Creation of workflows, automated email rules, and dashboards Conducting training sessions and providing support after go-live Project coordination (budget, schedule, stakeholder communication)
Key Achievements
Full implementation of the Odoo suite within the set timeframe (8 weeks) 30% reduction in accounting time and 25% acceleration of the lead-to-sale flow 100% customer satisfaction after go-live, based on survey results Successful migration of 100% of existing master data without data loss Establishment of a sustainable support infrastructure (3-month post go-live support)
Impact
Improved decision-making through real-time dashboards and automated reports Increased efficiency and cost savings (≈ €8,000/month) Scalability for future growth (additional modules can be integrated seamlessly) Strengthened sales and finance departments through seamless process integration
This summary highlights how I created concrete and measurable value for the company through structured project work, technical expertise, and targeted training.
Patrick W.
Last position:
AI Software Engineer at IppenMedia
- Analysis
- Consulting
- Software design
- Development
- Automation
- Testing
- Deployment
- Architecture, development and deployment of various proof-of-concept applications around the integration of current AI interfaces including conversational, realtime voice, images and videos
- Developed best practices for working with agentic systems and AI in practice
- Created code templates
Allal K.
Last position:
Java Senior Full Stack Developer at Insurance ÖRAG
- Further development of a policy administration system (contract/claims) for the legal expenses insurer ÖRAG.
- My role: Senior Software Developer.
- The team consists of 12 developers.
- Technologies used: Java 8/21, Java EE, Quarkus, WebLogic, JPA, RabbitMQ, JTA, CI, CD, Jenkins, DB2, Maven, Jenkins, GIT (bitbucket) later GitLab, Junit, Elasticsearch, Mockito, Jira, SonarQube, Scrum, React, Workflow
- Migration and modernization of legacy systems: rewrote C and C++ code in Java to improve maintainability, scalability, and performance. Refactored Python into Java, including optimization and integration into modern architectures.
- Study on the use of AI (Codex) for implementing a Java feature. The goal is to compare the time spent and productivity of AI-supported development with a classic implementation by a developer. The results should show how strongly the use of AI affects development time and efficiency.
- Development of the following tariff calculators for the years 2024/2026: private, companies, doctors, farmers, owner-occupied G + H, landlords, traffic, club, top managers, sales representatives, special criminal law, savings bank, municipal, BayGT, doctors, Dehoga
Ursula R.
Last position:
Sabbatical with Training at Own Sabbatical
Neil P.
Last position:
Software Engineer at AKDB
- Maintenance, further development, modernization and testing of the OK.VERKEHR specialist application, a monolithic Enterprise Java solution (with approx. 3,5 Mio LOC) for vehicle registration and driving license authorities
- Design, development, testing and maintenance of end-to-end workflows (dialogs, backend services and persistence layer, test suite) for new driving license applications, changes/extensions to driving licenses, management of parking permits and truck driver cards
- Development and maintenance of web services for communication between local traffic authorities and the Federal Motor Transport Authority, FAER register, TÜV testing centers and driving schools
- Performance optimization and targeted refactoring for the future migration to a cloud architecture and the addition of a new web client (Vaadin)
- 3rd-level support for customers during ongoing operations
Niels M.
Last position:
Senior Software Developer / Cloud Architect at Biesterfeld SE
- Architected ETL services for event-driven data exchange between enterprise systems on a Kafka streaming backbone.
- Optimized CI/CD pipelines for Azure AKS deployments and improved OpenSearch monitoring and alerting for proactive incident detection.
Tech: Java / Kotlin, Quarkus, Kafka / Avro, Azure / AKS, Azure Storage Container, ArgoCD, GitLab CI, OpenSearch, Terraform
Timo K.
Last position:
Senior Fullstack Developer
- Lead Developer / Tech Lead in a large banking group for a complete redevelopment of payment systems
- Rebuilding payment processing in stream processing
- Development and design of cross-border payment stream processing based on Kafka and Kafka Streams
- Development of different input formats for the business team using Drools rules to dynamically adjust validation rules
- Evaluation and comparison of different public cloud providers regarding the databases they offer
- Technologies & Tools: Java 21, Kotlin, Spring Boot, Kafka, Kubernetes, Azure, TDD, JEE, REST, Angular, Spark, Google Cloud, SCDF, PostgreSQL, Drools, Git, S3, MongoDB
Discover over 15,000 top freelancers
Statistics of experts using Jakarta CDI
Aggregated from the professional profiles of matched freelancers.
Experience
23 years
Position duration
1.6 years
Positions per freelancer
16
Top business areas
Information Technology, Product Development, Quality Assurance
Top industries
Information Technology, Banking and Finance, Automotive
Certification focus areas
Information Technology, Product Development, Operations
Bachelor's degree or higher
89%
Master's degree or higher
58%
Doctorate
11%
Certifications per freelancer
3
Most common languages
German, English, French
Speak two or more languages
92%
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 Germany 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 Germany using Jakarta CDI
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.
Jakarta CDI 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 (71%)
- Automotive (58%)
- Retail (58%)
- Government and Administration (54%)
- Healthcare (46%)
- Insurance (46%)
- Transportation (42%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
What Jakarta CDI does
Jakarta CDI, formerly known as Contexts and Dependency Injection for Java, is the Jakarta EE standard for managing object creation, dependencies and application contexts. It lets enterprise services receive the components they need without tightly coupling implementation details to business logic. The specification also supports interception, decorators, events and contextual scopes.
Where it fits
CDI is used in modular Jakarta EE applications that expose APIs, process transactions and coordinate persistence. Typical deliverables include:
- REST services with Jakarta REST and JSON processing
- Business services connected to Jakarta Persistence
- Transactional workflows with clear application boundaries
- Event-driven communication between application components
Ecosystem and tooling
Strong Jakarta CDI work depends on the surrounding Jakarta EE stack. Specialists commonly use Jakarta REST, Jakarta Persistence, Jakarta Transactions, Jakarta Security and Bean Validation, together with an application server such as Weld-based runtimes, Open Liberty, Payara or WildFly. Maven or Gradle, JUnit, Arquillian and container-based test environments support repeatable delivery.
When companies bring in specialists
Companies often need freelance expertise when modernising Java EE applications, moving from javax to jakarta namespaces or introducing CDI into a modular service layer. In Germany, this work appears across regulated, industrial and enterprise environments where stable integration and controlled deployments matter. A specialist can also review architecture before a migration creates avoidable compatibility issues.
Skills that distinguish experts
A capable professional understands scopes, qualifiers, producers, alternatives and injection points rather than treating CDI as simple annotation wiring. They control bean discovery, avoid circular dependencies and choose application, request or dependent scope deliberately. They also test interceptors and events, trace transaction boundaries and explain lifecycle behaviour clearly to the wider team.
Choosing the right collaboration
For remote delivery, teams should provide repository access, architecture decisions, runtime details and a dependable test environment. On-site work can help when specialists must coordinate with security, operations or legacy-system teams, but CDI implementation itself is usually well suited to distributed collaboration. Look for evidence of Jakarta EE migrations, production troubleshooting and clear documentation of configuration and lifecycle decisions.
Frequently asked questions
Before you brief your next project: the most common questions about Jakarta CDI.
Jakarta CDI manages dependency injection and contextual lifecycles in Jakarta EE applications. It helps teams connect REST resources, business services, persistence components, events and cross-cutting interceptors without hard-coded dependencies.
Jakarta CDI is the standard dependency injection model within Jakarta EE, while Spring uses its own container and programming model. The better choice depends on the runtime, existing libraries, team practices and whether the application is built around Jakarta EE standards or the Spring ecosystem.
A strong Jakarta CDI specialist usually works with Jakarta REST, Jakarta Persistence, Jakarta Transactions, Bean Validation and application security. Knowledge of Maven or Gradle, JUnit, container deployment and relational databases is also valuable.
Jakarta CDI requires careful design when an application has several scopes, qualifiers, interceptors, producers or event flows. Bring in an experienced specialist for Java EE to Jakarta EE migrations, difficult lifecycle bugs, transaction issues or large modular services.
Jakarta CDI projects are often suitable for remote collaboration because implementation, testing and code review can happen in shared repositories and environments. On-site sessions may still help when the work involves internal networks, legacy integrations or close coordination with German operations and security teams.
Look for practical evidence with injection scopes, bean discovery, qualifiers, producers and interceptor behaviour in production systems. A good Jakarta CDI professional can explain lifecycle decisions, test failure cases and document how the application server is configured.
Jakarta CDI is defined for Jakarta EE, but its concepts can also be used in focused runtimes and frameworks that support the CDI programming model. The specialist should confirm which CDI version, runtime and Jakarta specifications the target deployment supports.
Jakarta CDI continues the Contexts and Dependency Injection model formerly delivered under Java EE and commonly called CDI. The major migration concern is the move from javax namespaces to jakarta namespaces, along with compatibility checks for libraries, application servers and deployment configuration.
The average hourly rate of freelancers in Germany who have used Jakarta CDI in their recent projects is 99 €, which corresponds to a daily rate of about 796 € based on an 8-hour working day.
Of the freelancers in Germany who have used Jakarta CDI in their recent projects, 89% hold at least a Bachelor's degree, 58% hold at least a Master's degree, and 11% hold a doctorate.
On average, freelancers in Germany who have used Jakarta CDI in their recent projects have 23 years of professional experience, with a single engagement typically lasting around 1.6 years.
The most common languages among freelancers in Germany who have used Jakarta CDI in their recent projects are German (100%), English (92%), and French (25%).
The most common industries among freelancers in Germany who have used Jakarta CDI in their recent projects are Information Technology (100%), Banking and Finance (71%), and Automotive (58%).
The most common business areas among freelancers in Germany who have used Jakarta CDI in their recent projects are Information Technology (100%), Product Development (100%), and Quality Assurance (75%).
Main locations of FRATCH Experts, who have recently used Jakarta CDI
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 Hamburg Munich Cologne Frankfurt Stuttgart Dusseldorf Leipzig Dortmund Essen Bremen Dresden Hanover Nuremberg Request a free demo
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Philipp Thomaschewski
FRATCH CEO
