Jakarta EE Experts in Berlin
matched in minutes from over 15,000 CVsHire experts who deliver secure REST services, transactional business applications and cloud-ready enterprise platforms with Jakarta EE, supported by tools such as Payara, WildFly and Open Liberty. FRATCH matches you quickly with precise, vetted and available freelancers.
Meet FRATCH Experts in Berlin, who have recently used Jakarta EE
Syed A.
Last position:
Senior Software Engineer at Giant Eagle
- Designed and developed AI-powered document processing solutions using Python, OCR, NLP, and Large Language Models (LLMs) to automate extraction, validation, and classification of financial documents, reducing processing time by 75%.
- Built intelligent multi-stage workflow automation pipelines integrating AI services, machine learning models, and enterprise systems to streamline financial operations and improve data quality.
- Developed reusable AI-driven transformation frameworks capable of processing structured and unstructured document formats (XML, CSV, JSON, TXT, DAT) and normalizing them into unified business schemas.
- Designed and developed Python-based REST APIs and backend services supporting enterprise finance applications and high-volume data processing workloads.
- Built scalable data synchronization pipelines between Oracle CFIN and SQL databases, incorporating machine learning models for cash-flow forecasting and AP/AR anomaly detection.
- Architected and deployed Apache Airflow workflows to orchestrate AI-powered data pipelines, automating end-to-end processing from document ingestion through financial system integration.
- Led the migration of critical enterprise integrations from MuleSoft to Python-based services, improving maintainability, performance, and operational flexibility while preserving complete data integrity.
- Managed the full API lifecycle including solution design, implementation, documentation, deployment, monitoring, and production support for mission-critical financial systems.
- Collaborated directly with finance stakeholders to identify business challenges, define solution requirements, and deliver measurable operational improvements through automation and AI-driven workflows.
- Worked closely with cross-functional engineering and business teams to rapidly iterate on features, improve processes, and drive successful adoption of AI-enabled solutions.
- Provided technical leadership through architecture reviews, technology decisions, code reviews, and engineering best practices across integration and automation initiatives.
- Mentored developers, established coding standards, and contributed to improving software quality, maintainability, and delivery effectiveness across projects.
- Provided production support during critical month-end and quarter-close financial processes, performing root-cause analysis and implementing rapid fixes to ensure system reliability and data accuracy.
Abhiroop B.
Last position:
Software Engineer III at Foundry Digital
- Developed and deployed microservices in Kotlin and Spring Boot, integrated AWS Secrets Manager to secure credentials and decreased network calls using Spring cache.
- Refactored Kafka consumer using Spring Kafka with semaphore-based backpressure to cap records and keep heap memory stable under spikes; switched to batch upserts to cut down on database invocations; added Testcontainers integration tests for Kafka and database to pave the way for future changes.
- Automated the financial reconciliation workflow in Spring Boot (Kotlin) using Spring Scheduler, transactional boundaries, JPA/Hibernate on MySQL, and Flyway migrations, saving the accounts team 16+ hours per week.
- Designed and dockerized payments end-to-end test framework in Robot (Python) with reusable keyword libraries and profiles; integrated with GitLab CI (JaCoCo XML and HTML reports) to accelerate releases and lift code coverage to 80%.
- Implemented end-to-end observability on Datadog by instrumenting services with Datadog APM, correlating metrics and logs, provisioning dashboards, and creating monitors with burn-rate alerts and anomalies to harden reliability and give stakeholders clear visibility.
Ola V.
Last position:
IT Lecturer
- IT training in theory and practice for IT specialists in application development and system integration
Toralf C.
Last position:
IT Consultant in PKI Software Development at BWI
- Implementation of a full-stack application with Angular as the frontend framework and Java as the backend language
- Use of the Swagger OpenAPI specification for REST communication between the frontend and backend applications
- Control of a card printer via the Nexus Card SDK framework
- Design and implementation of card management software with a web interface and a JavaFX module for printer monitoring
- Use of Cucumber tests for test automation and creation of test artifacts to test outside the development environment
- Use of Wireshark for network investigations to analyze the API of a third-party product and to monitor the REST API of the self-developed software
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
Olaf T.
Last position:
CTO, Shareholder, Agile Coach, Product Owner at fluidx digital GmbH
- Development and rollout of a browser-based platform for camera streaming, augmented reality (AR), and visual computing
- Device-independent camera streaming for smartphones, tablets, desktop PCs, as well as VR and AR headsets
- Ensuring GDPR-compliant hosting in Open Telekom Cloud and other sovereign cloud providers
- Intuitive visual and collaborative features to increase efficiency and integrate smoothly into existing business software
Ursula R.
Last position:
Sabbatical with Training at Own Sabbatical
Igor K.
Last position:
Freelance Software Developer
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
Sandeep G.
Last position:
Software Engineer at ACL Digital
- Developed high-performance APIs for SDK backend on JavaEE Web, iOS, and Android, improving application performance and scalability by 30%.
- Led system design, tech stack planning, and development, ensuring 98% uptime with strong code quality and automated tests.
- Implemented CI/CD pipelines with Jenkins and GitHub Actions, reducing release cycle time by 40%.
- Deployed cloud-native applications on AWS EC2 instances, ensuring 99% uptime and optimized performance.
- Delivered clean code with full unit, component, and integration test coverage, reducing defects by 25%.
- Collaborated across engineering, QA, and product teams to deliver secure, reliable solutions.
- Mentored team members, increased development efficiency by 20%, automated routine tasks, and contributed to hiring, growing team capacity by 15%.
Anusha R.
Last position:
Full-time parenting (Career Break) at Full-time parenting (Career Break)
Neil P.
Last position:
Software Engineer at AKDB
- Maintenance, enhancement, modernization, and testing of the OK.VERKEHR specialized application, a monolithic Enterprise Java solution (approx. 3.5 million LOC) for vehicle registration and driving license authorities
- Design, development, testing and maintenance of end-to-end workflows (dialogs, backend services and persistence layer, test suite) for new driver's license applications, modifications/extensions of licenses, management of parking permits and truck driver cards
- Development and maintenance of web services for communication between local road traffic authorities and the Federal Motor Transport Authority (Kraftfahrt-Bundesamt), FAER register, TĂśV inspection centers and driving schools
- Performance optimization and targeted refactoring for the future migration to a cloud architecture and addition of a new web client (Vaadin)
- 3rd-level support for customers in production
Dirk U.
Last position:
Developer at Future Training & Consulting GmbH
Training course with exam for Spring Certified Professional.
- Environment: Spring Boot 3, Spring Framework 6, IntelliJ
Robert H.
Last position:
Senior Software Engineer at Zalando SE
Michael O.
Last position:
Software Engineer at Zalando SE
Discover over 15,000 top freelancers
Statistics of experts using Jakarta EE
Aggregated from the professional profiles of matched freelancers.
Experience
20 years (Germany: 23 years)
Position duration
1.9 years (Germany: 2.2 years)
Positions per freelancer
12 (Germany: 15)
Top business areas
Information Technology, Product Development, Quality Assurance
Top industries
Information Technology, Banking and Finance, Automotive
Certification focus areas
Information Technology, Product Development, Project Management
Bachelor's degree or higher
100% (Germany: 92%)
Master's degree or higher
50% (Germany: 53%)
Certifications per freelancer
2
Most common languages
German, English, French
Speak two or more languages
73% (Germany: 96%)
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 Berlin 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.
Discover detailed Jakarta EE rate benchmarks:
Explore rate insightsAverage rates of experts in Berlin using Jakarta EE
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.
Jakarta EE 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%)
- Banking and Finance (47%)
- Automotive (40%)
- Retail (40%)
- Education (33%)
- Insurance (33%)
- Healthcare (27%)
- Manufacturing (27%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
Enterprise Java platform
Jakarta EE is the open standard for building secure, modular enterprise applications on the Java platform. It provides specifications for web interfaces, REST APIs, dependency injection, persistence, messaging, security and transactions. The platform was formerly known as Java EE, so projects, documentation and professionals may still use that name.
What it builds
Jakarta EE supports long-running business systems where reliability, clear boundaries and controlled data access matter. It is used for customer portals, internal platforms, payment services, logistics systems, public-sector applications and integration-heavy back ends.
- Transactional business services
- RESTful and web applications
- Secure APIs and identity integrations
- Messaging-driven workflows
Core ecosystem
A Jakarta EE project may run on application servers such as WildFly, Payara Server, Open Liberty or Eclipse GlassFish. Common components include Jakarta REST, CDI, Jakarta Persistence, Jakarta Transactions, Jakarta Security and Jakarta Messaging. Maven or Gradle, relational databases, Docker and Kubernetes often support delivery and operations.
When specialists help
Companies bring in freelance expertise when an enterprise Java system needs a new service, a platform migration or a controlled modernisation. Berlin teams may benefit from specialists who can work on-site when needed, collaborate remotely across Germany and communicate clearly in English or German.
- Migrate Java EE applications to Jakarta EE
- Split legacy modules into maintainable services
- Improve security, transactions and persistence
- Prepare applications for containers and cloud environments
Skills that matter
Strong professionals understand both the specifications and the runtime beneath them. They can choose suitable scopes, manage transaction boundaries, design reliable API contracts and diagnose application-server behaviour. Experience with SQL, testing, observability, CI/CD and Java performance helps them deliver work that remains supportable after launch.
Evaluating expertise
Ask for examples of Jakarta EE systems with comparable security, integration and transaction needs. Review how the specialist documents architecture, handles backward compatibility and tests failure scenarios. A good professional explains trade-offs between a full application server, a lighter runtime and alternative Java frameworks instead of treating one approach as universal.
Frequently asked questions
What clients ask us most about Jakarta EE — answered in short.
Jakarta EE is used to build secure, transactional and scalable enterprise applications on Java. Typical work includes REST APIs, customer portals, integration services, messaging workflows and systems that connect several business databases or external services.
Jakarta EE is the successor to Java EE, following the transfer of the specifications to the Eclipse Foundation. Existing Java EE applications can often be migrated, but namespace changes and compatibility checks may affect source code, dependencies and application-server configuration.
Jakarta EE provides standardized specifications implemented by application servers, while Spring Boot offers a cohesive framework with its own ecosystem and conventions. The right choice depends on existing investments, runtime preferences, team skills, deployment requirements and the level of vendor neutrality needed.
Jakarta EE work often benefits from knowledge of Java, SQL, relational databases, Maven or Gradle, Docker, Kubernetes and CI/CD. Security standards, messaging systems, cloud deployment, automated testing and observability are also valuable for enterprise production systems.
Jakarta EE projects vary widely in difficulty. A focused API or migration task may need a specialist who knows the relevant specifications and runtime, while a regulated or integration-heavy platform calls for broader architecture, security, testing and operations experience.
Jakarta EE projects are well suited to remote collaboration when repositories, environments, documentation and decision processes are organized. Berlin companies should agree on communication language, overlap for workshops, access to sensitive systems and any need for occasional on-site sessions.
Jakarta EE applications can run on several compatible runtimes, including WildFly, Payara Server, Open Liberty and Eclipse GlassFish. The best option depends on specification support, operational tooling, licensing preferences, deployment targets and the organization’s existing platform knowledge.
Jakarta EE quality is shown through clear API design, sound transaction boundaries, secure configuration, meaningful tests and practical monitoring. Ask the professional to explain past trade-offs, migration risks and failure handling, then review a small technical plan before starting larger delivery work.
The average hourly rate of freelancers in Berlin, Germany who have used Jakarta EE in their recent projects is 93 €, which corresponds to a daily rate of about 746 € based on an 8-hour working day.
Of the freelancers in Berlin, Germany who have used Jakarta EE in their recent projects, 100% hold at least a Bachelor's degree and 50% hold at least a Master's degree.
On average, freelancers in Berlin, Germany who have used Jakarta EE in their recent projects have 20 years of professional experience, with a single engagement typically lasting around 1.9 years.
The most common languages among freelancers in Berlin, Germany who have used Jakarta EE in their recent projects are German (93%), English (80%), and French (20%).
The most common industries among freelancers in Berlin, Germany who have used Jakarta EE in their recent projects are Information Technology (100%), Banking and Finance (47%), and Automotive (40%).
The most common business areas among freelancers in Berlin, Germany who have used Jakarta EE in their recent projects are Information Technology (100%), Product Development (87%), and Quality Assurance (60%).
Main locations of FRATCH Experts, who have recently used Jakarta EE
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.
Hamburg 
Munich 
Cologne 
Frankfurt 
Stuttgart 
Dusseldorf 
Nuremberg Request a free demo
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Philipp Thomaschewski
FRATCH CEO
