Jakarta Server Pages (JSP) Experts in Cologne
in minutes with vetted specialists and precise AI matching.Hire experts who maintain JSP views, JSTL tag libraries, and servlet-based web flows, and who can modernize legacy Java web applications without disrupting delivery. Get fast, precise matching with vetted, available freelancers.
Meet FRATCH Experts in Cologne, who have recently used Jakarta Server Pages (JSP)
Hooman Behmanesh
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.
Joaquim Landa Miala
Last position:
Freelance ABAP Developer, Logistics at Cheplapharm
- Tested integration of TIBCO EBX with SAP S/4HANA via TIBCO BusinessWorks – proof of concept
- Implemented use case: communication between TIBCO EBX and SAP S/4HANA via IDocs to exchange material master data and business partner data
- Customized, configured, and implemented inbound and outbound processing in the SAP S/4HANA environment for communication with the TIBCO EBX software interface
- Distributed classes, characteristics, and values between TIBCO BusinessWorks and SAP S/4HANA and customized the inbound processing
- Documented the technical components
Vladimir Maznicenko
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
Louis Nguenkam
Last position:
Specialist in Adobe Experience Manager & Microservices at Nguenkam Consulting & Engineering
Java 11/21
Springboot
Swagger/OpenApi
Azure Pipelines
Trivy Integration
Apache Sling
OSGI
Java Content Repository (JCR)
Apache Jackrabbit Oak
Adobe HTL
GraphQL
Maven
GitLab
IntelliJ
Azure Cloud
Azure DevOps
Terraform
AEM specialist in the Scrum team
Development and deployment of microservices via Open API interfaces
Operation of microservices in the Azure Cloud
Implementation of AEM modules and integration with microservices
Member of the knowledge transfer team and a backend coordination team
Peter Brungs
Last position:
Data Warehouse Consultant (Development and Analysis) at Atruvia AG
- Developed and enhanced ETL loading jobs with IBM DataStage and optimized SQL in an IBM DB2 environment as part of the Agree21 data migration
- Analyzed data quality and developed test procedures
- Created PowerShell scripts and documented GIT deployment processes
- Technologies: RedHat Linux, IBM DB2 with DBVisualizer, IBM InfoSphere DataStage 11.7, JIRA, TortoiseGIT, TortoiseSVN, PowerShell scripts
Ingo Cousin
Last position:
Founder, freelance CMS expert at CMS Consulting Cousin
- Freelance work as a CMS expert
Fatih Karakurt
Last position:
Mobile App Developer at ING Belgium
- Part of a squad focused on intensive module development and integration
- Close collaboration with other squads and teams to integrate modules and essential components
- Use of SwiftUI and the Coordinator pattern to develop clean and understandable code
- Creative collaboration with UX designers in Figma and implementation in code
- Industry: Banking
- Project language: English
- Organizational form: Kanban
- Tools: Azure, Confluence, Figma, Teams
- Team size: 40 people
- Version control: Git, GitFlow, Azure
- App Store product: ING Banking
- Programming languages: SwiftUI, Swift
- Patterns: Coordinator, MVVM
- Swift Package Manager
- Localization: Yes
- Testing: XCTest, XCUITest
Jacqueline Haefke
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 Beckers
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
Allal Kharaz
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
Jacqueline Krech
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 Server Pages (JSP)
Aggregated from the professional profiles of matched freelancers.
Experience
20 years (Germany: 23 years)
Position duration
2.2 years (Germany: 2.3 years)
Positions per freelancer
12 (Germany: 14)
Top business areas
Information Technology, Product Development, Quality Assurance
Top industries
Information Technology, Banking and Finance, Insurance
Certification focus areas
Information Technology, Product Development, Project Management
Bachelor's degree or higher
83% (Germany: 90%)
Master's degree or higher
83% (Germany: 62%)
Doctorate
17% (Germany: 10%)
Certifications per freelancer
3 (Germany: 2)
Most common languages
German, English, French
Speak two or more languages
92% (Germany: 97%)
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 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 Server Pages (JSP)
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
What JSP does
Jakarta Server Pages, still widely searched as JSP and JavaServer Pages, is a server-side view technology for Java web applications. It turns dynamic data into HTML pages that browsers can render. Companies use it for login flows, dashboards, content pages, and other server-rendered screens.
Where it fits
JSP often sits next to servlets, the Jakarta EE stack, and legacy Java application servers. It is common in systems that need stable server-side rendering, shared layouts, and tight integration with backend logic. Strong experts know when to keep JSP and when a newer view layer is a better fit.
Typical work
- Maintain existing JSP pages and tag files
- Refactor scriptlets into cleaner JSTL and EL usage
- Connect forms, validation, and session-driven flows
- Debug rendering issues across browsers and app servers
- Support upgrades in Tomcat, Jetty, or Jakarta EE environments
What good specialists know
A strong JSP professional reads old code quickly and keeps changes safe. They understand servlet lifecycles, expression language, custom tags, and how pages depend on backend models. They also write maintainable templates instead of adding more presentation logic inside the page.
When companies bring in help
Teams usually look for outside expertise when a JSP codebase is hard to change, a release is blocked by view-layer bugs, or a migration needs careful handling. In Cologne, this often helps organizations that run Java business systems and need both remote support and occasional on-site collaboration in German or English.
Ecosystem and handover
- JSP, JSTL, and Expression Language
- Servlets, Tomcat, and Jakarta EE
- Tag libraries and custom UI fragments
- Legacy modernization and documentation
- Safe handover for internal teams
Frequently asked questions
Need clarity? These are the questions we hear most often about Jakarta Server Pages (JSP).
Jakarta Server Pages (JSP) is used to render server-side HTML in Java web applications. It is a common choice for login screens, admin pages, content views, and other pages that need data from the backend on every request. Teams also use JSP in older systems that still run well and only need careful maintenance.
JSP is the abbreviation most people use today, and JavaServer Pages is the older full name many searchers still know. The technology now sits under the Jakarta EE umbrella, so you may also see Jakarta Server Pages in newer documentation. In practice, people often mean the same server-side page technology for Java web apps.
JSP work becomes tricky when the codebase mixes old page logic, custom tags, servlet flows, and app-server-specific behavior. A specialist is useful when you need to stabilize a legacy application, clean up templates, or prepare a migration without breaking existing screens. General Java knowledge helps, but page rendering details matter here.
A strong JSP professional usually knows servlets, JSTL, Expression Language, and Java application servers such as Tomcat or Jetty. They often work with form handling, validation, session state, and legacy MVC patterns. Clean HTML, debugging skills, and version control discipline matter just as much as Java syntax.
JSP is older and often appears in existing Java applications, while Thymeleaf and JSF are used in different server-side rendering setups. Teams choose JSP when they want to maintain what already works or keep close to servlet-based architecture. If you are starting fresh, a specialist can help decide whether JSP is still the right fit.
A JSP project needs enough depth to handle page rendering, backend coupling, and application-server quirks without guesswork. Small fixes may only need a focused specialist, while larger modernization work needs someone who can trace request flow from controller to view. The right level depends on how old and intertwined the codebase is.
Most JSP work can be done remotely because the main tasks are code review, debugging, and page refactoring. On-site time can help when access to internal systems, stakeholders, or older deployment setups is important. In Cologne, many teams mix remote delivery with planned on-site sessions when needed.
Look for a JSP specialist who improves the page layer instead of adding more scriptlets or hidden business logic. Good signs are clear servlet integration, safe changes to legacy flows, and a clean handover with notes for the team. Ask for examples of maintenance or migration work, not just greenfield Java projects.
The average hourly rate of freelancers in Cologne, Germany who have used Jakarta Server Pages (JSP) in their recent projects is 98 €, which corresponds to a daily rate of about 786 € based on an 8-hour working day.
Of the freelancers in Cologne, Germany who have used Jakarta Server Pages (JSP) in their recent projects, 83% hold at least a Bachelor's degree, 83% hold at least a Master's degree, and 17% hold a doctorate.
On average, freelancers in Cologne, Germany who have used Jakarta Server Pages (JSP) in their recent projects have 20 years of professional experience, with a single engagement typically lasting around 2.2 years.
The most common languages among freelancers in Cologne, Germany who have used Jakarta Server Pages (JSP) in their recent projects are German (100%), English (92%), and French (42%).
The most common industries among freelancers in Cologne, Germany who have used Jakarta Server Pages (JSP) in their recent projects are Information Technology (92%), Banking and Finance (58%), and Insurance (58%).
The most common business areas among freelancers in Cologne, Germany who have used Jakarta Server Pages (JSP) in their recent projects are Information Technology (100%), Product Development (83%), and Quality Assurance (75%).
Main locations of FRATCH Experts, who have recently used Jakarta Server Pages (JSP)
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
Get in touch with the FRATCH team and we will get back to you within 4 hours.
Would you rather directly get in touch?
We always have the time for a call or email!
Philipp Thomaschewski
FRATCH CEO
