Payara Experts in Germany
, matched with vetted freelancers in minutesHire experts who deliver enterprise applications, secure REST services and container-ready Payara deployments, with the Jakarta EE ecosystem skills your project needs. FRATCH connects you quickly and precisely with vetted, available freelancers.
Meet FRATCH Experts in Germany, who have recently used Payara
Sercan T.
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 L.
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 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
Wadim L.
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 K.
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 K.
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 A.
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 K.
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
Christoph S.
Last position:
Staatsministerium für Ernährung, Landwirtschaft und Forsten
- Development of the Ibalis portal and payment procedures for applying for and paying out EU funding.
- Publicly accessible portal, e.g. for farmers.
- Projects over the last ten years were carried out according to Scrum.
- Technologies: Spring, Wicket, Hibernate, Postgres, JSON, XML, REST, Bitbucket, Podam, Buckets, JUnit, Gradle, Intellij, Bamboo, Swagger.
Oliver L.
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 G.
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 R.
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
Mykhaylo K.
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
- Performing code reviews
- Participating in communities of practice for developers and architects
- Implementation of frontend-backend communication with WebSockets
Ulrich C.
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 E.
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.
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 19 Sep 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 19 Sep 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
Payara 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 (100%)
- Government and Administration (68%)
- Banking and Finance (63%)
- Automotive (47%)
- Insurance (47%)
- Transportation (47%)
- Manufacturing (42%)
- Healthcare (37%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
Payara in practice
Payara is an open-source application server for Jakarta EE, formerly known through the GlassFish ecosystem. It runs enterprise Java applications and provides the runtime services needed for web applications, REST APIs, messaging and transactional systems. Payara Server suits teams that need a supported, production-focused alternative to a self-managed GlassFish setup.
Core capabilities
Payara supports Jakarta EE specifications such as CDI, JPA, JAX-RS, Servlet, WebSocket and Jakarta Messaging. Experts configure domains, clusters, connection pools, security realms and deployment workflows. They also work with MicroProfile features for configuration, health checks, metrics, fault tolerance and distributed tracing in cloud-native services.
Ecosystem and tooling
Payara work commonly connects application code with Maven, Gradle, Git, Docker and Kubernetes. Specialists may use Payara Micro for lightweight, embedded runtimes or Payara Micro Enterprise for packaged services. Delivery often includes PostgreSQL or other relational databases, REST clients, CI/CD pipelines, observability tools and identity providers using OAuth or OpenID Connect.
Where companies use it
Payara appears in systems where Java enterprise standards, security and long-term maintainability matter:
- Transaction-heavy back-office and financial applications
- Public-sector services and regulated business systems
- Secure REST and integration services
- Containerized Jakarta EE applications
- Modernization projects moving from GlassFish or older Java servers
When to bring in expertise
Companies usually seek freelance Payara expertise during platform migrations, production incidents, cloud adoption or a major Jakarta EE upgrade. A specialist can assess an existing domain, tune JVM and server settings, establish repeatable deployments and resolve classloading or compatibility issues. In Germany, remote collaboration is common, while regulated or operational environments may still require on-site work and German-language coordination.
What strong specialists deliver
Strong Payara professionals understand both the server and the applications running on it. They separate application defects from runtime configuration problems, define safe rollout and rollback procedures, and make logs, metrics and health checks useful to operations teams. They document domain settings, security decisions and deployment steps so the system remains maintainable after the engagement ends.
Frequently asked questions
Quick answers to the questions that come up most around Payara.
Payara is used to run Jakarta EE applications such as transactional business systems, REST services, messaging applications and secure web back ends. It provides the application-server services that connect enterprise Java code with databases, identity systems and operational tooling.
Payara originated from the GlassFish ecosystem and keeps strong compatibility with Jakarta EE application-server patterns. It is generally considered when a team wants a production-oriented distribution, commercial support options or a more active operational focus than its existing GlassFish setup provides.
Payara is a natural fit when a project relies on Jakarta EE standards, application-server services, transactions or an established enterprise Java deployment model. Spring Boot may be preferable for teams centered on the Spring ecosystem and independently packaged services, so the decision should follow existing code, team skills and operating requirements.
A strong Payara specialist usually understands Jakarta EE APIs, Java, Maven or Gradle, relational databases and REST design. Experience with Docker, Kubernetes, CI/CD, JVM tuning, security providers and observability is valuable when the server runs in a modern delivery environment.
The required depth depends on the work. A straightforward application deployment may need solid Jakarta EE and configuration skills, while a migration, cluster redesign or production incident calls for someone who has handled Payara domains, classloading, security and performance under comparable conditions.
Payara projects are often suitable for remote collaboration because configuration, code reviews, deployment automation and diagnostics can be handled through shared repositories and secure access. On-site work may still help when systems are isolated, releases require local coordination or German-language communication is important.
Ask how the specialist would separate application issues from server configuration, plan a rollback and validate a deployment. Strong Payara professionals can explain domain structure, logging, health checks, security, database connections and resource tuning in clear terms, then document the resulting setup.
Payara supports container-oriented Jakarta EE deployments, including lightweight services built with Payara Micro and workloads managed through Kubernetes. A suitable specialist should also understand externalized configuration, readiness and liveness checks, immutable images, secrets management and the operational limits of running an application server in containers.
The average hourly rate of freelancers in Germany who have used Payara in their recent projects is 94 €, which corresponds to a daily rate of about 753 € 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
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FRATCH CEO
