Payara Experts in Germany
for secure Jakarta EE systems, matched in minutes with vetted and available specialistsHire experts who deliver Payara Server applications, Jakarta EE services, MicroProfile APIs and reliable cloud deployments. Work with vetted, available freelancers whose experience is matched precisely to your project needs.
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 placement platform that directly connects relatives of people in need of care 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 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 the sole 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 using presigned URLs to verify 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 the placement process.
- Development of 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.
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
Assessment of the current state
Evaluation of Redgate Flyway functionalities
Concept development
Products: Redgate Flyway, GitHub, Quest, Erwin Data Modeller, Oracle, Atlassian Jira, Atlassian Confluence
Knowledge: Docker, Continuous Delivery, Continuous Integration, Redgate Flyway, Major Releases, Minor Releases
Kyu-Wang L.
Last position:
Software Architect & Lead Software Engineer at Landesamt für Steuern Niedersachsen
The goal of BIENE is to provide a unified tax collection program for all federal states.
Tax collection involves collecting the taxes that have been assessed. This includes, for example, taking due dates into account, recording incoming and outgoing payments, and initiating reminders or refunds. Limitation periods and payment reminders are also important. BIENE handles all payment transactions with banks and accounting.
Set up the architecture and coordinated the provision of development and test environments at the Hannover site
Installed and configured the environments on Linux servers (Apache Kafka, PostgreSQL)
Interface coordination: coordinated and aligned the connection of software products from other departments and their test data
Migrated the application server, JDK, and Maven project structure
Coordinated environments and managed builds
Implemented external interfaces
Delivered business requirements
Designed and implemented RESTful APIs and OpenAPI specifications
Designed and implemented a microservice architecture
Set up and maintained CI/CD pipelines
Deployed applications on OpenShift
Created technical documentation and diagrams
Worked with SQL databases (Oracle and PostgreSQL)
Set up authentication and authorization for the application and users
Containerized the application (automated deployment through the CI/CD pipeline)
Rolf G.
Last position:
Developer & Designer at Sicherheitsbehörden
- Migration of a case management system with numerous interfaces to other systems from Spring and Activiti to a Java JEE application
- Further development toward 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 of 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
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
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
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
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
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
24 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 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 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 29 Oct 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 Server
Payara Server is an open-source application server built for Jakarta EE workloads. It runs enterprise web applications, REST services, messaging components and transactional systems on a production-ready runtime. Payara Micro packages the same core capabilities for lightweight, self-contained deployments.
Jakarta EE Applications
Payara specialists work across the Jakarta EE stack, including CDI, JPA, JAX-RS, Servlet, Bean Validation and Jakarta Faces. They design service boundaries, persistence layers and secure APIs that remain maintainable as business processes change. Existing GlassFish applications can often be assessed and modernised with a structured migration plan.
MicroProfile and Tooling
Payara extends its Jakarta EE foundation with MicroProfile features for cloud-native services. Relevant capabilities include Config, Health, Metrics, OpenAPI, Fault Tolerance and Rest Client. Strong specialists also use Maven, Gradle, Docker, Git-based delivery pipelines and observability tools to test and operate applications consistently.
Typical Project Needs
Companies commonly bring in Payara expertise for:
- Migrating applications from GlassFish or another Java application server
- Building REST APIs and modular Jakarta EE services
- Packaging Payara Micro applications for container environments
- Configuring security, data sources, transactions and messaging
- Improving deployment reliability, monitoring and runtime operations
Why Hire Freelance Specialists
External expertise is useful when a team inherits a complex GlassFish estate, needs a safe Jakarta EE migration or must stabilise a Payara production environment. Freelancers can review architecture, isolate configuration problems and transfer practical knowledge to internal teams. In Germany, remote collaboration is common, while on-site work may help with regulated industries, legacy integration or operational handover. German and English communication can both matter depending on the project team.
Signs of Quality
A strong Payara professional understands application code and the runtime beneath it. They can explain deployment descriptors, classloading, clustering, connection pools, authentication and JVM behaviour in clear terms. Look for evidence of tested releases, repeatable configuration, meaningful health checks and careful rollback plans. Experience with Jakarta EE standards and the former GlassFish ecosystem is especially useful when modernising existing systems.
Frequently asked questions
Quick answers to the questions that come up most around Payara.
Payara is used to run enterprise Jakarta EE applications, REST APIs, transactional services and messaging workloads. Payara Server suits full application-server deployments, while Payara Micro supports portable services packaged for containers or standalone execution.
Payara began as a commercially supported continuation of the GlassFish ecosystem and remains familiar to teams with existing GlassFish applications. It adds production support, operational features and a focused release path, while migration still requires careful review of configuration, libraries and deployment behaviour.
Payara shares the Jakarta EE foundation used by alternatives such as WildFly and Open Liberty, but their administration models, defaults, tooling and operational features differ. The right choice depends on application compatibility, team experience, support expectations, deployment targets and existing infrastructure.
A strong Payara freelancer usually works comfortably with Jakarta EE APIs, Maven or Gradle, relational databases, REST design and container tooling. Useful adjacent knowledge includes MicroProfile, Docker, Kubernetes, JVM diagnostics, CI/CD, security configuration and application observability.
Payara work can range from targeted configuration changes to major application migrations, so the required background depends on risk and scope. For production systems, look for a specialist who has handled Jakarta EE deployment, runtime troubleshooting, database integration and controlled releases in comparable environments.
Payara projects are often suitable for remote collaboration because source code, configuration and deployment pipelines can be reviewed online. On-site sessions may still help with secure environments, legacy systems or handover; agree on working language, access procedures and operational responsibilities early.
Ask a Payara specialist to explain a relevant architecture, deployment process or production incident without relying on vague claims. Review how they approach configuration management, automated tests, health checks, logging, rollback and migration risks, then use a focused technical discussion to confirm their reasoning.
Payara professionals may work with Payara Server, Payara Micro, MicroProfile and applications inherited from GlassFish. They should understand Jakarta EE compatibility, domain administration, data sources, security realms, clustering and container deployment, while keeping implementation choices aligned with the client’s operational constraints.
The average hourly rate of freelancers in Germany who have used Payara in their recent projects is 93 €, which corresponds to a daily rate of about 747 € 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 24 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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Philipp Thomaschewski
FRATCH CEO
