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Java Servlet Experts in Cologne

matched in minutes from 15,000 CVs with the power of AI and vetted availability.

Hire experts who build servlet-based web endpoints, HTTP request handling, session logic, and legacy Java web applications with clean deployment paths on Tomcat, Jetty, or Jakarta EE stacks. Get fast, precise matching with vetted, available freelancers.

Meet FRATCH Experts in Cologne, who have recently used Java Servlet

Verified expert

Joaquim Landa Miala

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Freelance ABAP Developer, Logistics

Bonn
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
Verified expert

Louis Nguenkam

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Specialist in Adobe Experience Manager & Microservices

Bergheim
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

Verified expert

Peter Brungs

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Data Warehouse Consultant (Development and Analysis)

Köln
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
Verified expert

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Building test automation with Cucumber

Cologne

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

Discover over 15,000 top freelancers

Statistics of experts using Java Servlet

Aggregated from the professional profiles of matched freelancers.

Experience

21 years

Position duration

1.8 years

Positions per freelancer

13

Top business areas

Information Technology, Product Development, Quality Assurance

Top industries

Information Technology, Energy, Banking and Finance

Certification focus areas

Information Technology, Human Resources, Marketing

Bachelor's degree or higher

67%

Master's degree or higher

67%

Certifications per freelancer

3

Most common languages

German, English, French

Speak two or more languages

83%

Based on our profile pool as of 30 Aug 2026.

Daily rate distribution

0 1 2 3 4
<€680 €680-​720 €760-​800 €840+

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 Java Servlet

Rates are based on recent contracts and do not include FRATCH margin.

1000
750
500
250
Rate comparison chart
Daily rate avg. 794 €

The average daily rate is the mean of all daily rates from recent contracts of comparable freelancers on our platform.

1000
750
500
250
Rate comparison chart
Median rate 804 €

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

Servlet basics

Java Servlet is the core Java web API for handling HTTP requests and responses on the server. It powers request routing, form handling, authentication flows, file uploads, and other backend web tasks. Many teams still rely on it directly in Tomcat, Jetty, or full Jakarta EE environments.

Where it fits

  • Web applications with custom request logic
  • Internal tools and admin back ends
  • Legacy Java portals that still run well
  • API endpoints behind JSP or framework layers

It is often used when teams want direct control over the web layer without adding heavy abstractions.

Ecosystem skills

Strong professionals working with Java Servlet usually know HTTP, cookies, sessions, filters, listeners, and deployment descriptors. They also understand servlet containers, logging, testing, and integration with JDBC, JSP, Spring, or Jakarta Servlet. Good work here depends on reading request flow clearly and keeping the code easy to maintain.

When to bring in help

Companies bring in freelance expertise when an older Java web app needs fixes, a servlet layer must be stabilized, or a migration is underway from Java EE to Jakarta EE. This is also common when Cologne-based teams need short-term support for a Tomcat deployment or remote help on a release with tight timing.

What strong experts do

  • Trace request and response handling cleanly
  • Use filters for cross-cutting concerns
  • Manage sessions and authentication safely
  • Keep servlet code small and readable
  • Diagnose container and deployment issues

A strong specialist knows when to keep logic in the servlet and when to move it into services or helpers.

Common signs

If a project has hard-to-track redirects, session bugs, upload issues, or brittle legacy web code, it usually needs servlet expertise. The same is true when documentation is thin and the team needs someone who can work directly with Java Servlet APIs and container behavior. Clear fixes start with understanding the full request lifecycle.

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Frequently asked questions

Questions about Java Servlet? Start with the answers below.

Java Servlet is used to handle server-side HTTP work in Java web applications. Teams rely on it for request routing, session handling, authentication flows, file uploads, and integration with other backend services. It is still common in Tomcat and Jetty based systems, especially where the web layer is kept close to the platform.

Java Servlet is lower level than Spring MVC, so it gives direct control over the request lifecycle. Spring often adds structure and convenience on top, while Servlet stays closer to the container and HTTP API. Many systems use Servlet as the base layer even when higher frameworks handle most application logic.

Java Servlet help is useful when a legacy application needs maintenance, a deployment breaks, or a migration needs careful handling. It also helps when a team has code that is difficult to change because the servlet layer mixes business logic with request handling. A specialist can reduce risk without forcing a full rewrite.

A strong Java Servlet specialist usually knows HTTP, cookies, sessions, filters, and listener APIs. Knowledge of Tomcat, Jetty, JSP, JDBC, logging, and testing tools is often important too. For modern projects, familiarity with Jakarta Servlet naming and package changes also matters.

Not always, but the task should match the complexity of the codebase. Small fixes in a simple servlet are different from debugging a multi-step login flow or a production deployment issue. When the application is old, lightly documented, or tied to a specific container, deeper experience helps a lot.

Most Java Servlet work can be done remotely because the tasks are code, configuration, and container focused. On-site help in Cologne can still be useful for urgent workshops, access-limited systems, or teams that prefer direct pairing on legacy stacks. Many projects work well with a hybrid setup.

Look for clear explanations of request flow, session handling, and container behavior in Java Servlet work. Strong professionals produce small, testable changes and can explain why a filter, listener, or servlet is the right place for the logic. They should also be comfortable discussing deployment issues and legacy constraints.

Java Servlet is the common name people use for the servlet API and the request handling layer in Java web stacks. You may also see Servlet API, Java EE, or the newer Jakarta Servlet name, depending on the project age. The exact package names and runtime details matter, especially during migrations.

The average hourly rate of freelancers in Cologne, Germany who have used Java Servlet in their recent projects is 99 €, which corresponds to a daily rate of about 794 € based on an 8-hour working day.

Of the freelancers in Cologne, Germany who have used Java Servlet in their recent projects, 67% hold at least a Bachelor's degree and 67% hold at least a Master's degree.

On average, freelancers in Cologne, Germany who have used Java Servlet in their recent projects have 21 years of professional experience, with a single engagement typically lasting around 1.8 years.

The most common languages among freelancers in Cologne, Germany who have used Java Servlet in their recent projects are German (100%), English (83%), and French (50%).

The most common industries among freelancers in Cologne, Germany who have used Java Servlet in their recent projects are Information Technology (100%), Energy (50%), and Banking and Finance (50%).

The most common business areas among freelancers in Cologne, Germany who have used Java Servlet in their recent projects are Information Technology (100%), Product Development (83%), and Quality Assurance (83%).

Main locations of FRATCH Experts, who have recently used Java Servlet

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.

Countries:

Berlin Hamburg Munich Cologne Frankfurt Stuttgart Dusseldorf Leipzig Dortmund Essen Bremen Dresden Hanover Nuremberg

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