Java Servlet Experts in Germany
, matched with vetted professionals in minutesHire experts who design servlet-based web applications, maintain Jakarta EE integrations and improve request handling, sessions and security. FRATCH matches you quickly with precise, vetted and available freelancers for remote or on-site work.
Meet FRATCH Experts in Germany, who have recently used Java Servlet
Michael S.
Last position:
IT & Test Consultant at Testing Experts GmbH
AI Readiness - Part 3: Creating an e-book on the use of AI in software testing
- Designed and created an e-book on the sensible and safe use of AI in software testing from the perspective of an experienced test expert.
- Used generative AI (ChatGPT, Perplexity Pro) as a sparring partner for structuring, wording suggestions and creating variations, with all content finally reviewed and approved using my own expertise.
- Developed practical insights into the opportunities and risks of AI in testing, with a special focus on collaboration between testers and AI instead of “tester vs. AI”.
- Title: “11 starke Gründe: Dream-Team statt Rivalen - Tester und KI sind gemeinsam unschlagbar”
- Subtitle: “Wie Mensch und Maschine im Softwaretest das perfekte Team bilden – und warum reines KI-Testing riskant ist.”
- Planned use of the e-book as a basis for workshops, customer meetings or internal training.
- Technology: Generative AI, ChatGPT, Perplexity Pro, Microsoft Word, Adobe Acrobat, many years of hands-on professional testing experience, common sense.
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
Alexander Z.
Last position:
Fullstack Developer and DevOps Engineer at Freelancer
- Developing the infrastructure and improving existing infrastructure: Jenkins, Gitlab Pipeline, OpenShift, Docker, Helm Chart, Kubernetes, Artifactory, CodePipeline, CodeArtifact, Python
- Documenting solutions in Jira/Confluence
- Supporting other colleagues in different technical areas
Anupriya P.
Last position:
Senior Software Engineer at Telefonica Germany
(Maternity/Parental Leave: July 2023 – Aug 2024)
- Domain: Payment Domain | Client: Telefonica Germany
- Project: General Payment Service
The General Payment Service is responsible for processing of online payments via external payment service provider like Safer pay and PayPal
- Developed Design of Use (DOU) and interface contract documentation, ensuring clarity and compliance across system integrations
- Designed and delivered REST/SOAP web services with Spring Boot and Spring Data JPA, publishing Swagger contracts through WSO2 API Gateway to improve accessibility and governance.
- Spearheaded the on-premises to AWS Cloud migration, re-platforming from Oracle to PostgreSQL on AWS RDS and deploying services on EC2, improving scalability and cost efficiency.
- Containerized microservices using Docker and orchestrated deployments with Kubernetes, streamlining deployment pipelines and improving system reliability.
- Implemented proactive monitoring and logging via AWS CloudWatch and Kibana, ensuring stability and performance during cutover.
- Enhanced collaboration through code reviews and peer reviews, promoting maintainability and clean coding standards.
- Strengthened quality by writing comprehensive JUnit tests and preparing detailed test cases enabling early defect detection
- Delivered automated API testing with Ready API, Postman, and SOAPUI, and conducted performance testing with JMeter, ensuring reliability in high-transaction environments.
Tamás N.
Last position:
Embedded MISRA C Developer at DEKRA Arbeit GmbH
Task: Test tool development for Smart-Home IoT-based heating control Test tool development for Smart-Home HVAC heating and ventilation. Eliminating memory leaks in C/C++ within the CAN Analyzer application. Reviewing Python and Tcl/Tk code. Reviewing C-based simulator code for BOSCH Home Comfort cascade heating control using Visual Studio Code and Conan/Conda. Reviewing Delphi application: conversion to 64-bit. Reviewing PyQt6 user interface. SiL testing of domestic water heater control for memory leaks. Stability testing and continuous operation. Migration to Windows 11 24H2. Developing device connectivity with WinSock2 (WSAAPI, recv, send, select) for EMS/CAN IoT communication with C. Testing with virtual machines and Server Manager. Writing reports about the test cases. Logging with the RoboTT framework. Creating test procedure documentation with Docupedia. Bare-metal programming of embedded STM32 Cortex-M and simulation with Renode.io. In-depth familiarization with the SEGGER EmbOS firmware framework and its related system calls. Reviewing MATLAB/Sinumerik .m program files. Implementing redesigned OS schedulers in SEGGER EmbOS.Technologies: Embarcadero RAD Studio 10.2, Visual Studio Code, Sourcetree, Conan, Cmake, Conda, EmbOS, PyQt6, Qt6, Delphi VCL 32-bit, CAN, EMS, Powershell, MingW64, STM32 ARM-Cortex-M4F Renode.io, Windows Server 2022 Standard, RoboTT, IoT
Mustafa K.
Last position:
Senior Network Design and Engineer at Helaba
Designed and specified the technical network integration of a new business critical application system (MUREX) in the capital market area in a complex interface and outsourcing environment.
Created component specifications, catalog of measures and implementation plan.
Ensured proper integration of developed results in accordance with the bank’s framework: IT compliance, IT security, change and release management.
Selected and integrated a new service provider for the bank; moved critical bank applications to the provider.
Designed, implemented and supported the new Cisco network and Fortinet security setup at the service provider data center.
Acted as technical interface between bank, service providers and consulting partners.
Supported and further developed the network and security infrastructure (clients, servers, networks); performed error analysis and implemented solutions within agreed service levels.
Analyzed and diagnosed all security and network failures, glitches and malfunctions.
Initiated continuous enhancements to guarantee efficient resource utilization and acceptable response times to users.
Provided network support in financial service organization and operational change preparation on production banking network infrastructure for both large and small projects within strict change management discipline.
Designed, defined, tested, governed and improved engineering standards.
Performed role of network architect for medium-large projects involving team resources.
Ola V.
Last position:
IT Lecturer
- IT training in theory and practice for IT specialists in application development and system integration
Felix S.
Last position:
Systems Consultant / Consultant at Freelance work
- Projects in the areas of identity and access management, single sign-on and LDAP directories
- Development of Java modules
- Development and administration of Java/J2EE-based applications on various application servers
- Administration of Unix systems (Linux, Solaris, AIX) and applications
- Migration of systems
Christian T.
Last position:
HDI DevOps & Fullstack Engineer at HDI
- Spring Boot Software Engineer
- DevOps Engineer (Kubernetes, Azure DevOps)
Toolstack: Java, Spring Boot, Kubernetes, Helm, GitOps, ArgoCD, Docker, Azure DevOps, CI/CD Pipelines, Git, Postgres
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.
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
Nikunjkumar P.
Last position:
Senior Java Backend Developer at Questax Professionals GmbH
- Provide the Price Listing Service team with prices for all cars and vans in different markets
- Adapt market-specific requirements such as taxes, government subsidies, campaigns
- Import and synchronize new prices for all new and existing cars and store them in the Redis datastore
- Support our product and on-call duty
- Daily business, development of new features, bug fixing
- Pair programming, code review, mob programming
- Develop POCs for new ideas
- Maintain and extend the backend
- DevOps tasks
- Run Kubernetes updates
- Adjust and further develop Kubernetes resources
- Develop and adapt Helm charts
- Adapt and update ArgoCD
- Maintain, adapt, and improve CI/CD
Jörg S.
Last position:
Software Developer at Commerzbank
- Created interface programs between mainframe and distributed online screens
- Modified and created batch programs for daily data processing
- Provided advice on program setup, database structures, and programming tools
- Performed error analysis for the overall project
- System: OS/390, ISPF, TSO, IMS DB, IMS Connect, COBOL, DB2, SQL, SPUFI, IBM debug tool, Confluence, Jira, Eclipse, Rational Developer for Z Systems (RDZ)
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
Peter N.
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
Discover over 15,000 top freelancers
Statistics of experts using Java Servlet
Aggregated from the professional profiles of matched freelancers.
Experience
24 years
Position duration
2.1 years
Positions per freelancer
18
Top business areas
Information Technology, Product Development, Quality Assurance
Top industries
Information Technology, Banking and Finance, Automotive
Certification focus areas
Information Technology, Project Management, Product Development
Bachelor's degree or higher
94%
Master's degree or higher
55%
Doctorate
9%
Certifications per freelancer
2
Most common languages
German, English, French
Speak two or more languages
93%
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 Java Servlet
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.
Java Servlet 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 (98%)
- Banking and Finance (60%)
- Automotive (51%)
- Retail (44%)
- Healthcare (38%)
- Insurance (38%)
- Telecommunication (38%)
- Government and Administration (36%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
Servlet foundations
Java Servlet is the standard Java technology for handling HTTP requests and responses on a server. It provides the core model behind many web applications, including routing, sessions, filters, authentication flows and dynamic content. The technology is now maintained under the Jakarta Servlet name within Jakarta EE, while many teams still search for Java Servlet expertise.
Web application work
Servlet specialists build and maintain server-side systems that need direct control over request processing and application behavior. Their work often includes:
- Designing servlet endpoints and request flows
- Managing sessions, cookies and multipart uploads
- Implementing filters, listeners and authentication checks
- Integrating HTML views, REST services and external systems
- Refactoring legacy Java web applications
Ecosystem and tooling
Java Servlet commonly runs inside containers such as Apache Tomcat, Jetty or Eclipse GlassFish. Strong expertise also covers Jakarta EE APIs, Maven or Gradle builds, Java, JDBC, JPA, JSP and REST frameworks. Professionals understand deployment descriptors, annotations, container configuration, logging and automated tests.
When companies hire specialists
Companies bring in freelance expertise when an established Java web application needs a safe change without disrupting production. Specialists are also useful during framework migrations, security reviews, performance investigations and integrations with identity, payment or data systems. In Germany, this work often supports enterprise applications, manufacturing systems, public services and internal business software.
- Stabilizing an overloaded servlet application
- Moving from javax.servlet to jakarta.servlet packages
- Upgrading a Tomcat or Jetty deployment
- Connecting legacy web flows to modern APIs
What strong experts deliver
Good professionals trace a request across the container, filters, application code, database and downstream services. They separate business logic from HTTP concerns, handle errors consistently and protect sessions and input boundaries. They also document deployment assumptions and explain trade-offs clearly to distributed teams, whether collaboration is remote or on-site in Germany.
Choosing the right fit
Look for evidence of servlet applications that resemble your system in traffic patterns, container setup and integration needs. Ask how the expert approaches session management, thread safety, dependency upgrades, testing and production diagnostics. A strong fit can work with older Java code while identifying where Jakarta EE, Spring or a different service boundary would reduce long-term risk.
Frequently asked questions
Quick answers to the questions that come up most around Java Servlet.
Java Servlet is used to process HTTP requests and generate responses in server-side Java applications. It supports routing, sessions, filters, authentication and integrations with databases or external services.
Java Servlet is the earlier name associated with the Java EE ecosystem, while Jakarta Servlet is the current Jakarta EE specification name. The package namespace changed from javax.servlet to jakarta.servlet, so migration work must account for imports, dependencies and container compatibility.
Java Servlet provides a lower-level HTTP programming model, while Spring MVC adds routing conventions, dependency injection and other application features. A project may use Spring MVC on top of a servlet container, so the choice depends on the existing architecture and the control the team needs.
A strong Java Servlet expert often works with Java, Apache Tomcat or Jetty, Maven or Gradle, JDBC, JPA and REST APIs. Knowledge of Jakarta EE, JSP, authentication, databases, automated testing and deployment operations is also valuable.
The required level for Java Servlet work depends on the system's age, integrations and operational risk. A small endpoint change may need focused application knowledge, while a migration or production investigation calls for an expert who has handled containers, concurrency, security and legacy code.
Java Servlet projects are often suitable for remote collaboration because source code, build pipelines, logs and environments can be shared securely. On-site work may help when the system depends on restricted networks, hardware or close coordination with a German-speaking team.
Ask the Java Servlet expert to explain request lifecycles, filter ordering, session handling, thread safety and failure diagnosis in terms of your system. Review comparable deliverables, testing habits, deployment experience and the clarity of their technical documentation.
Java Servlet expertise is especially useful when a business-critical application already runs in a servlet container and must be improved safely. Replacing the stack may be justified for a new service or major redesign, but a focused specialist can often modernize the existing system with less disruption.
The average hourly rate of freelancers in Germany who have used Java Servlet in their recent projects is 94 €, which corresponds to a daily rate of about 752 € based on an 8-hour working day.
Of the freelancers in Germany who have used Java Servlet in their recent projects, 94% hold at least a Bachelor's degree, 55% hold at least a Master's degree, and 9% hold a doctorate.
On average, freelancers in Germany who have used Java Servlet in their recent projects have 24 years of professional experience, with a single engagement typically lasting around 2.1 years.
The most common languages among freelancers in Germany who have used Java Servlet in their recent projects are German (96%), English (96%), and French (22%).
The most common industries among freelancers in Germany who have used Java Servlet in their recent projects are Information Technology (98%), Banking and Finance (60%), and Automotive (51%).
The most common business areas among freelancers in Germany who have used Java Servlet in their recent projects are Information Technology (100%), Product Development (91%), and Quality Assurance (62%).
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.
Berlin Hamburg Munich Cologne Frankfurt Stuttgart Dusseldorf Leipzig Dortmund Essen Bremen Dresden Hanover Nuremberg Request a free demo
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FRATCH CEO
