Payara Experts in Germany
in minutes from over 15,000 CVs with the power of AI.Hire experts who keep Payara Server, Payara Micro, and Jakarta EE applications stable, secure, and ready for release. Get support for upgrades, performance tuning, clustering, and production troubleshooting with fast, precise matching of vetted, available freelancers.
Meet FRATCH Experts in Germany, who have recently used Payara
Sercan Tatar
Last position:
Co-Founder & Lead Software Architect at Pflege-Pfad
- Focus: system architecture, cloud-native platforms, microservices, API design
- Product: Pflege-Pfad is a digital matchmaking platform that connects relatives of people in need of care directly with verified care services and caregivers - without an agency and without ongoing fees.
- Business analysis & process design:
- Analysis of the German care market and identification of the key pain points of both target groups.
- Modeling of the core business processes: registration, verification, care request, application, placement, and rating.
- Definition of the business model as a freemium/premium model with optional contact unlocking.
- Creation of user stories and requirements documentation for relatives, care services, and administrators.
- Design of trust and quality assurance mechanisms with document upload, admin review process, and rating system.
- Coordination with stakeholders and validation of product decisions with potential users.
- Technical implementation:
- Design and implementation of the entire platform architecture as a solo developer.
- Design and implementation of a REST API with Spring Boot and Kotlin, including JWT-based authentication.
- Development of the frontend as a single-page application with Angular 17.
- Implementation of the AWS infrastructure with EC2, RDS PostgreSQL, S3, CloudFront, and IAM.
- Document upload with AWS S3 via presigned URLs for verification of care services.
- Email notifications via Resend API.
- AI-supported care service search via OpenAI API.
- Implementation of complete user flows such as registration, login, password reset, and placement process.
- Building an admin panel for user and care service management as well as analytics.
- CI/CD with GitHub Actions and containerized deployments with Docker.
- End-to-end tests with Playwright.
Technologies: Kotlin, Spring Boot 3, Spring Security, JWT, JPA/Hibernate, PostgreSQL, Angular 17, TypeScript, RxJS, AWS (EC2, ECS, S3, CloudFront CDN, RDS PostgreSQL, IAM), nginx, GitHub Actions, Playwright, Maven, Git, OpenAI API, Resend API, Docker, Scrum, i18n (DE/EN/TR), Kiro, feature-flag architecture.
Kyu-Wang Lee
Last position:
Software Architect & Lead Software Engineer at Landesamt für Steuern Niedersachsen
The goal of BIENE is to provide a uniform program for tax collection for all states.
In tax collection, the aim is to collect the assessed taxes. This includes handling due dates, documenting incoming and outgoing payments, triggering reminders or refunds. Statute of limitations and payment reminders also play an important role. All payment transactions with banks and accounting are mapped in BIENE.
Setting up the architecture and coordinating the provisioning of development and test environments at the Hanover location
Installing and configuring environments on Linux servers (Apache Kafka, PostgreSQL)
Interface tasks: coordinating and aligning the integration of software products from other departments and their test data
Upgrading application server, JDK, Maven project structure
Environment coordination and build management
Implementing external interfaces
Implementing business requirements
Designing and implementing RESTful APIs and OpenAPI specifications
Designing and implementing microservice architecture
Setting up and maintaining CI/CD pipelines
Deploying applications on OpenShift
Creating technical documentation and diagrams
Working with SQL databases (Oracle and PostgreSQL)
Setting up authentication and authorization for the application and users
Containerizing the application (automated deployment via CI/CD pipeline)
Rainer Langbehn
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
Mykhaylo Khazanovych
Last position:
Lead Developer Backend, Frontend, BPMN / Administrator at Main Customs Office, Department for Digital Affairs
- Development of backend, frontend and BPMN processes in the Atlas Centralised Clearance for Import project
- Definition and implementation of REST, JMS and SOAP endpoints
- Implementation of database access with JPA
- Implementation of BPMN processes with Camunda
- Frontend implementation with React
- Configuration of JBoss via CLI
- Conducting code reviews
- Participation in communities of practice for developers and architects
- Implementation of frontend-backend communication with WebSockets
Wadim Lupejcenko
Last position:
Software Engineer & Consultant at Abat+ GmbH | Daimler Trucks AG
New development of the vehicle planning and delivery system (FAPS)
As part of the modernization of a central backend application, the existing monolithic COBOL-based system was replaced by a service-oriented architecture with Spring Boot. The goal of the project is to make the digital mapping of vehicle planning and delivery future-proof and scalable.
Work on the technical architecture and interface design
Development of a service based on Spring Boot for migrating existing data into a new data model
Development of REST APIs and the related service layer
Development of middleware for integrating the new backend into an existing client
Creation of unit and end-to-end tests
Adaptation of build pipelines
Developer training for customer staff (Java, Azure DevOps, general support)
Support for testers and other project members
Upgrade of the Spring Boot version (& Hibernate)
Creation of documentation
Java 8 and 17, Spring Boot, Spring JPA, Hibernate, Optimistic Locking (entity versioning), JUnit, Cucumber, PostgreSQL, Azure Cloud, Microservices, Azure Storage, Azure DevOps, Azure Kubernetes Service, RESTful web services, JSON, Scrum, Confluence, ArchUnit
Werner Keil
Last position:
Test Coordinator, Designer and Engineer at IBM
- Testing the SekIDP and related components
- Test design, execution and automation, microservices, GitHub Enterprise, Eclipse, Katalon Test Platform, API Testing, Confluence 8, JIRA/Xray, Draw.io, Swagger/OpenAPI, Postman, Docker, Kubernetes, Podman, PuTTY, E-Health, Telematik, Gematik standards, EPA, E-Rezept, sektoraler IDP, encryption, XaDES, PaDES, DICOM, HL7, FHIR, IHE, ICD, SSO, SAML/Shibboleth, OAuth, smartcards, JWT, two factor authentication Android and iOS, Wireshark, BrowserStack, Cypress, gRPC, REST, SOAP, WS-Security, Linux Shell, PowerShell, SSH/SSL, Java, Kotlin, Cordova, Gradle, Groovy, Python, TypeScript
György Kelemen
Last position:
Senior Fullstack Developer at Rockstardevelopers GmbH
- Development of a test system
- Establishment of the architecture using Scala/Java for the backend and Swing for the frontend
- Setup of CI/CD pipelines with Jenkins for continuous integration, including automated builds
- Participation in the Scrum team, including daily stand-ups, sprint planning, and retrospectives
- Technology environment: Scala, Swing, EJB, JPA, Scrum, PostgreSQL, Mercurial
Zakaria Aoune
Last position:
Vice President Technology EMEA at Aparavi Software Europe GmbH
- Always looking for solutions to problems and finding ways to tackle business challenges
- Leading and managing large multi-disciplinary teams (product development, project management, engineering, operations, QA, solution management, customer success)
- Developing and executing innovation and digitalization strategies for complex transformation projects
- Acting as Information Security Officer, planning, conducting, and successfully completing all ISO 27001:2022 standard audits and continuously ensuring compliance
- Leading and coaching managers across the organization
- Representing the company at industry events and coordinating external partnerships
- Providing technical support to the Aparavi sales team
- Working with account managers to lead and grow enterprise customers
- Collaborating with technical and non-technical customer departments to manage and meet expectations (e.g., C-level, finance, IT services, data security and works council)
- Leading technical integration and coordinating seamless solution implementation
- Hands-on development and management of cloud, AI, and SaaS solutions to meet demanding customer expectations
- Promoting agile, DevOps-based methods and organizational structures for innovation and sustainable growth
- Continuously analyzing and solving technical and business challenges to boost company success
Mohamed Keita
Last position:
Interim Senior Camunda & BPMN Consultant, Spring Boot & Java Backend Developer at GEMA/IT4IPM GmbH
- Subject matter expert for the client on modeling and developing Camunda BPMN 2.0
- Development of new features and APIs, and coordination of tasks
- Design and development of RESTful APIs with Swagger (code first)
- Creation of target designs, high-level concepts, and requirement specifications
- Analysis and evaluation of alternative solution approaches
- Integration of external IT systems (ANUBIS, SES, ZPS) via Google GCP Pub/Sub and RESTful web services
- Pair programming, code reviews, and collaboration with API product owners
- Consulting on transforming legacy BPMN workflows and configuring Camunda BPM
- BPMN and DMN modeling and implementation in short iterations
- Operational support, bug fixing, and knowledge documentation
- Use of TDD, static code analysis with SonarQube, and integration tests
- Automation of test cases in Java and analysis of stack traces/logs on GCP-PROD
- Identification and execution of test data and documentation of test results
Oliver Langer
Last position:
Developer, Architect at libri GmbH
- Role: Developer, Architect
- Technologies: java, typescript, golang, spring (boot, web, security, data), Angular, AWS (OpenSearch, Aurora, SNS/SQS, CloudWatch, EC2, IAM), Kubernetes, Terraform, Helm, OAuth, Keycloak, CI/CD, gradlew, Liquibase, Test Driven Development, shell scripting
Rolf Gardewischke
Last position:
Developer & Designer at Security authorities
- Migration of a case processing system with numerous interfaces to other systems from Spring and Activiti to a Java JEE application
- Further development into 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 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
Thomas Ramm
Last position:
Architect, Developer at Oberlandesgericht Stuttgart – IuK FZ Justiz
Backend development including architecture
Creating a documentation platform
Training employees in Java/Git/Container
Exploring new technologies
Tools: IntelliJ
Tools: Git
Languages and technologies: Java 21
Languages and technologies: Spring Boot 3.4
Languages and technologies: Oracle DB
Languages and technologies: Websockets/REST
Languages and technologies: JSON
Languages and technologies: Liquibase
Languages and technologies: Keycloak
Languages and technologies: OAuth2
Languages and technologies: Docker/Podman
Languages and technologies: OpenShift
Languages and technologies: Micrometer/OpenTelemetry
Languages and technologies: Grafana Loki
Languages and technologies: Grafana Mimir
Languages and technologies: Grafana Tempo
Languages and technologies: Grafana dashboards
Languages and technologies: Vue.js 3
Ulrich Cech
Last position:
Java Architect/Developer – Freelancer at DHL/DP – Rentenservice
Implementation of a Java service (daemon) as part of the automated processing of death notifications
Technologies used: Java17, SpringBoot, Hexagonal Architecture, REST API, Oracle, Maven, SonarQube, FindBugs, Checkstyle
Johannes Erchen
Last position:
Libri GmbH
- Operation and further development of the inventory system for booksellers (Quimus). It is an in-house development by Libri that is sold to customers as Software as a Service. The software is developed in an agile way by two developer teams (about 5 developers each). The software consists of around 25 Java microservices that mainly communicate via messaging and share a common Angular frontend. The application runs on Kubernetes in AWS.
- Technologies used: Java 17 & 21, Spring Boot 2 & 3, Hibernate, MySQL, Spring Cloud AWS, Lombok, AWS SQS, AWS SNS, AWS RDS, AWS S3, DynamoDB, Kubernetes, Docker, OpenSearch, Hibernate Search, Liquibase, Gradle, Terraform, Helm, GitLab CI, Keycloak OAuth2, TypeScript, Angular
- My focus until December 2023: Connecting additional POS systems to the inventory system. Connecting the data warehouse for report display. Extending existing features (goods receipts, invoicing, item management, ...). Operations and DevOps tasks.
- Focus from January 2024: Extracting the product search from the inventory system into a global service to use in other applications. Integrating the product search into the booksellers' online shops (also run by Libri). Importing and providing digital items in the product search.
Jan Mönnich
Last position:
Interface project at HR Solutions GmbH for Rhineland-Palatinate / BAMF at HR Solutions GmbH
- Developed an adapter from the central foreigner register to an internal application
- REST, JSON, OpenAPI, Spring Boot, Vue, Java, Maven, XAusländer
- Jira/Confluence/GitHub, Scrum+Kanban
Discover over 15,000 top freelancers
Statistics of experts using Payara
Aggregated from the professional profiles of matched freelancers.
Experience
23 years
Position duration
1.7 years
Positions per freelancer
16
Top business areas
Information Technology, Product Development, Quality Assurance
Top industries
Information Technology, Government and Administration, Banking and Finance
Certification focus areas
Information Technology, Product Development, Project Management
Bachelor's degree or higher
73%
Master's degree or higher
53%
Doctorate
13%
Certifications per freelancer
2
Most common languages
German, English, French
Speak two or more languages
95%
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 Germany 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 Germany using Payara
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
Payara in practice
Payara is a Java application server built for Jakarta EE workloads. Companies use it to run business systems, APIs, and internal services that need a steady runtime and a familiar enterprise stack. It is also common in projects that started on GlassFish and moved to Payara for ongoing support.
What specialists handle
- Application server setup and deployment pipelines
- Jakarta EE configuration and runtime tuning
- Payara Server and Payara Micro packaging
- Upgrade planning and compatibility checks
- Production incident analysis and rollback support
Ecosystem and tooling
Strong professionals working with Payara understand Java, Maven or Gradle, CI/CD, logging, monitoring, and container runtimes. They often work with REST services, JMS, security realms, datasource configuration, and application packaging for on-premise or cloud environments. Knowledge of GlassFish migration paths is often useful.
When companies bring help
Companies usually look for freelance expertise when a release is blocked, a legacy Java EE system needs care, or an upgrade must be done without downtime. In Germany, this often comes up in enterprise IT, industry software, finance, and public-sector environments where onsite coordination may matter, but remote delivery is also common.
What strong experts do
- Diagnose startup, memory, or classloading issues quickly
- Review deployment descriptors and server configuration
- Tune performance under real production load
- Secure endpoints, credentials, and admin access
- Document changes so teams can maintain the setup
Choosing the right fit
The best specialists do more than know the commands. They explain tradeoffs clearly, keep environments reproducible, and understand how Payara fits into the wider Java platform. If a team still says GlassFish, Payara Server, or Payara Micro, a strong freelancer should understand each context without confusion.
Frequently asked questions
Quick answers to the questions that come up most around Payara.
Payara is used to run Jakarta EE applications, APIs, and internal business systems on a stable Java server. It fits cases where teams need an enterprise runtime, controlled deployments, and support for long-lived applications. Many companies also use it for services that were originally built on GlassFish.
Payara is often chosen as a supported path for teams that know the GlassFish ecosystem but need a more active production platform. Compared with lighter Spring-based setups, it is usually a better fit when a project depends on Jakarta EE services, server-managed resources, or existing enterprise deployment patterns. The right choice depends on the application’s architecture, not just the framework name.
A strong Payara specialist usually brings solid Java knowledge, Jakarta EE experience, and hands-on work with Maven or Gradle. They should also understand deployment packaging, logging, monitoring, security, and container basics. If your system uses messaging or databases heavily, look for those adjacencies too.
A Payara project can need different levels of depth. Simple deployments may only need someone who can configure the server and troubleshoot issues, while upgrades, clustering, and migration work need deeper platform knowledge. The key is proven production experience, not just general Java familiarity.
Yes, Payara work is often done remotely because most tasks are configuration, analysis, and deployment focused. In Germany, remote collaboration is common, but onsite time can help when access to internal networks, operations teams, or legacy infrastructure is needed. Clear documentation and reproducible environments matter either way.
Payara is used in both. Some teams start fresh with it for Jakarta EE applications, while others keep older enterprise systems running and modernize them step by step. It is especially useful when a company wants to preserve existing server-based application patterns.
Ask for examples of production deployments, upgrade work, and real troubleshooting on Payara. Good signs are clear explanations of server configuration, deployment issues, security settings, and performance tuning. If they can describe how they handled GlassFish-to-Payara migration or Payara Micro packaging, that is a strong signal.
A Payara assignment usually involves careful change control, documentation, and close attention to runtime behavior. Freelancers should expect to work with Java application teams, operations staff, and sometimes infrastructure owners. The best projects are specific about deployment targets, release windows, and what success looks like.
The average hourly rate of freelancers in Germany who have used Payara in their recent projects is 95 €, which corresponds to a daily rate of about 759 € based on an 8-hour working day.
Of the freelancers in Germany who have used Payara in their recent projects, 73% hold at least a Bachelor's degree, 53% hold at least a Master's degree, and 13% hold a doctorate.
On average, freelancers in Germany who have used Payara in their recent projects have 23 years of professional experience, with a single engagement typically lasting around 1.7 years.
The most common languages among freelancers in Germany who have used Payara in their recent projects are German (100%), English (95%), and French (16%).
The most common industries among freelancers in Germany who have used Payara in their recent projects are Information Technology (100%), Government and Administration (68%), and Banking and Finance (63%).
The most common business areas among freelancers in Germany who have used Payara in their recent projects are Information Technology (100%), Product Development (100%), and Quality Assurance (84%).
Main locations of FRATCH Experts, who have recently used Payara
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
Get in touch with the FRATCH team and we will get back to you within 4 hours.
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Philipp Thomaschewski
FRATCH CEO
