Jakarta Faces (JSF) Experts in Cologne
, matched in minutes with vetted, available freelancersHire experts who deliver server-side Java web interfaces, reusable Facelets components and Jakarta EE integrations with Jakarta Faces (JSF). FRATCH finds the right vetted, available freelancer through fast, precise AI matching.
Meet FRATCH Experts in Cologne, who have recently used Jakarta Faces (JSF)
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.
Rainer L.
Last position:
Senior IT Consultant, Senior Software Architect, Senior Software Developer, Senior DevOps Engineer at Techniker Krankenkasse
Automation of the database major / minor releases for the TKeasy project
Concept for database major / minor release automation
As-is analysis
Evaluation of Redgate Flyway functionality
Concept creation
Products: Redgate Flyway, GitHub, Quest, Erwin Data Modeller, Oracle, Atlassian Jira, Atlassian Confluence
Skills: Docker, Continuous Delivery, Continuous Integration, Redgate Flyway, Major Releases, Minor Releases
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
Andreas E.
Last position:
Consultant at Iteratec GmbH
Vladimir M.
Last position:
Developer at Financial services provider
- Support and further development of a framework for developing applications in a banking association: DynS/OSPE
- Migration of the framework to Java 11 and Java 17
- Java8, Java11 and Java17, Spring, Spring-Batch, Spring WebServices, Spring-Security, Spring-Data, JPA, Hibernate, OpenSource libraries etc.
- XML, JAXB, JSON, REST and SOAP services, DB2, Oracle, WebSphere or Liberty AS, FreeMaker, Junit, mock libraries, JaCoCo, Maven, IntelliJ, Eclipse, GitHub, SVN, Jira
Jacqueline H.
Last position:
Kitchen Appliance Manufacturer
Setting up and enhancing an international subscription management system
Migrating and decommissioning a Hybris-SAP system and integrating Zuora
Implementing numerous interfaces to various systems (external and internal)
Setting up and improving monitoring with Grafana, Prometheus, and Databricks
Introducing logging with Loki
Implementing business requirements using jQuery, Thymeleaf, Spring Boot, Java, Go, and Python
Adjusting and extending the GitLab CI pipelines
Setting up and extending infrastructure as code with Terraform and ArgoCD on AWS
Setting up and running E2E and performance tests
Expanding the Databricks business intelligence solution to provide various KPIs
Responsibilities: Architecture, DevOps, development, unit tests, coaching employees and apprentices, E2E, smoke, and integration tests, agile methods consulting (Kanban, Scrum)
Technologies and methods: Java, Go, Kotlin, Node.js, Spring Boot, SOAP/REST, Quarkus, Thymeleaf, Vaadin, Slack, Jira, Confluence, IntelliJ, GitLab, SQS, Kafka, AWS, Kubernetes, Terraform, Maven, Gradle, GitLab CI, Databricks
Andreas B.
Last position:
Senior Frontend Developer at Roadex
- Development of an app
- Technologies: React Native, Expo, SupaBase, TypeScript, GitHub, Trello
Last position:
Rewe Digital
- Creation of Spring Boot integration tests
- Creation of JUnit tests for the coupon system
- Creation of component tests for Kafka topics
- Creation of CI/CD pipeline scripts
- Creation of UI tests with Playwright
- Creation of UI tests with Cypress
- Review of developer unit tests
- Planning the test architecture for integration tests
- Creation of the test automation concept
- Evaluation and creation of test reports
Fabian Z.
Last position:
Freelance IT Specialist
IT specialist Application Engineering / Software Development since 2012
Jacqueline K.
Last position:
OTTO
- Design, development, and monitoring of microservices
- Migrating functions from a monolithic system into separate microservices
- Designing and implementing new microservices (backend and frontend)
- Setting up and maintaining a CI/CD pipeline (GitHub Actions)
- Configuring cloud infrastructure with AWS CDK and Terraform
- Designing and implementing event-driven communication with AWS SNS/SQS and Apache Kafka
- Ensuring code quality through Test Driven Development (TDD), static code analysis, and Clean Code
Discover over 15,000 top freelancers
Statistics of experts using Jakarta Faces (JSF)
Aggregated from the professional profiles of matched freelancers.
Experience
25 years (Germany: 22 years)
Position duration
2.8 years (Germany: 2 years)
Positions per freelancer
12 (Germany: 15)
Top business areas
Information Technology, Product Development, Quality Assurance
Top industries
Information Technology, Banking and Finance, Insurance
Certification focus areas
Information Technology, Product Development, Human Resources
Bachelor's degree or higher
100% (Germany: 85%)
Master's degree or higher
100% (Germany: 49%)
Doctorate
14% (Germany: 5%)
Certifications per freelancer
2
Most common languages
German, English, French
Speak two or more languages
100% (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 Cologne 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 Cologne using Jakarta Faces (JSF)
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 Faces (JSF) 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 (90%)
- Banking and Finance (60%)
- Insurance (60%)
- Automotive (50%)
- Transportation (50%)
- Retail (50%)
- Government and Administration (40%)
- Telecommunication (40%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
What Jakarta Faces Does
Jakarta Faces (JSF) is a Jakarta EE framework for building server-side component-based web interfaces in Java. It manages UI state, request processing, validation, conversion and navigation, making it well suited to structured enterprise applications with form-heavy workflows.
Where It Fits
Jakarta Faces appears in internal portals, customer service applications, administration consoles and regulated business systems. Companies use it when reliable server-side rendering, clear form handling and close integration with Java services matter more than a highly client-driven interface.
- Design multi-step forms and data-entry screens
- Build reusable Facelets views and composite components
- Connect interfaces to Jakarta EE services and persistence
- Maintain role-based enterprise workflows
Ecosystem and Tools
Strong specialists work with Facelets, XHTML views, backing beans, converters, validators and managed scopes. They understand Jakarta EE APIs such as CDI, Jakarta Persistence, Jakarta REST and Bean Validation, along with application servers including Payara, WildFly and Open Liberty. PrimeFaces and other component libraries may extend the standard UI set.
When to Bring in Specialists
Freelance expertise helps when a legacy JSF application needs a controlled modernization, when a team must migrate from Java EE to Jakarta EE namespaces, or when a new portal requires consistent component design. It is also valuable for performance reviews, test coverage, accessibility improvements and difficult state-management issues.
- Review view scope, session state and partial requests
- Plan JSF and Jakarta EE migration work
- Improve validation, navigation and component reuse
- Stabilize production defects without disrupting users
What Quality Looks Like
Reliable professionals separate view concerns from business logic and use CDI, clear scopes and testable services rather than placing complex rules in pages. They know when a component library helps and when plain Facelets is safer. They also inspect generated markup, browser behavior, security controls and server-side performance.
Cologne Project Context
In Cologne, Jakarta Faces work can support enterprise, public-sector, insurance, logistics and healthcare systems that depend on durable Java applications. Remote collaboration works well when repository practices, environments and acceptance criteria are clear; on-site workshops may help with legacy system discovery and stakeholder alignment. German or English communication should match the project team and documentation needs.
Frequently asked questions
Quick answers to the questions that come up most around Jakarta Faces (JSF).
Jakarta Faces (JSF) is used to create server-side, component-based web interfaces in Java. It is particularly useful for enterprise forms, workflow screens, administration portals and applications that need validation, navigation and controlled UI state.
Jakarta Faces handles views and UI state through a server-side component model, while Spring MVC is primarily an MVC web framework and JavaScript frontends move more interface logic into the browser. The right choice depends on team skills, existing Jakarta EE services, interaction complexity and the need to modernize gradually.
A strong JSF specialist usually understands CDI, Facelets, Jakarta Persistence, Bean Validation and application-server configuration. Experience with PrimeFaces, REST services, accessibility, browser debugging, automated testing and relational databases is also useful for complete delivery.
The required depth depends on the system. A small view change may need focused component and Facelets knowledge, while a migration or production redesign calls for a professional who can trace scopes, lifecycle behavior, security and Jakarta EE integrations across the application.
Yes. Jakarta Faces (JSF) work is well suited to remote collaboration when source control, test environments, logs and deployment processes are accessible. Cologne-based teams may add on-site sessions for legacy discovery, architecture workshops or coordination with business stakeholders.
Ask for examples of component-based enterprise interfaces, migration work and production troubleshooting. A capable Jakarta Faces professional should explain view scopes, postback behavior, validation, reusable components and how they keep business logic out of the presentation layer.
Review whether views remain understandable, scopes are deliberate and components are reused without hiding business rules. High-quality JSF work also includes automated tests, accessible markup, secure authorization, predictable validation and evidence that performance was checked under realistic usage.
Jakarta Faces remains relevant when a project values server-side rendering, structured forms and close Jakarta EE integration. It is less suitable when the product requires highly interactive browser behavior or a frontend ecosystem centered on independently deployed JavaScript applications.
The average hourly rate of freelancers in Cologne, Germany who have used Jakarta Faces (JSF) in their recent projects is 93 €, which corresponds to a daily rate of about 743 € based on an 8-hour working day.
Of the freelancers in Cologne, Germany who have used Jakarta Faces (JSF) in their recent projects, 100% hold at least a Bachelor's degree, 100% hold at least a Master's degree, and 14% hold a doctorate.
On average, freelancers in Cologne, Germany who have used Jakarta Faces (JSF) in their recent projects have 25 years of professional experience, with a single engagement typically lasting around 2.8 years.
The most common languages among freelancers in Cologne, Germany who have used Jakarta Faces (JSF) in their recent projects are German (100%), English (100%), and French (20%).
The most common industries among freelancers in Cologne, Germany who have used Jakarta Faces (JSF) in their recent projects are Information Technology (90%), Banking and Finance (60%), and Insurance (60%).
The most common business areas among freelancers in Cologne, Germany who have used Jakarta Faces (JSF) in their recent projects are Information Technology (100%), Product Development (90%), and Quality Assurance (70%).
Main locations of FRATCH Experts, who have recently used Jakarta Faces (JSF)
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.
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Munich Request a free demo
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