Groovy Experts in Frankfurt
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Meet FRATCH Experts in Frankfurt, who have recently used Groovy
Ali Aminian
Last position:
Platform Engineer & Software Architect at Yatta GmbH
- Architected the Yatta Integration Layer – a config-driven integration platform on Java 25, Spring Boot 4 (WebFlux), Temporal, gRPC and Kafka, enabling new third-party integrations (e.g. AVS fulfillment) via declarative JSON configs with zero code changes.
- Designed and implemented Tink integration with 0Auth IBAN verification to enhance fraud prevention and account validation workflows with Adyen payByBank.
- Architected and implemented an OpenFGA-based authorization model for centralized management of users, groups, and fine-grained access control in the vendor portal.
- Architected and led delivery of the Yatta API Gateway platform using GraphQL Federation, providing a unified enterprise API layer across distributed microservices with centralized authentication, authorization and request orchestration.
- Replaced NGINX + NLB with Istio service mesh and AWS ALB; rolled out WAF, OAuth (Cognito), IP whitelisting and RBAC across environments.
- Migrated CDC from Confluent Cloud connectors to a self-hosted Kafka Connect + Debezium stack, reducing operational cost by ~80% across multiple environments.
- Implemented the Transactional Outbox pattern with Debezium for reliable, exactly-once event publishing to Kafka with Avro and Schema Registry.
- Migrated dunning/payment-recovery workflows from Airflow to Temporal, achieving 99.9% reliability for settlement handling.
- Optimised Apache Airflow with deferrable sensors to handle 1000+ concurrent DAG runs without scaling the worker pool.
- Refactored a monolithic Terraform codebase into 3 modular projects, cutting deployment time by ~45%.
- Stood up full observability with OpenTelemetry, Tempo, Prometheus and Loki; automated dev/staging/prod with ArgoCD, Image Updater and Helm.
- Collaborated with product, operations and engineering stakeholders to define scalable platform architecture and integration standards aligned with long-term business and operational goals.
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
Leonid Ravin
Last position:
IT Business Analyst / Requirements Engineer at S-Payment GmbH / Sparkasse (DSV-Gruppe)
- Business analysis of payments for the introduction of Wero EPI in Germany.
- Analysis and optimization of merchant processes in the context of acquiring and issuing.
- Analysis of interfaces for instant payments.
- Analysis of SCT-Inst processes, settlement mechanisms and reporting processes.
- Identification and clarification of gaps in merchant processes.
- Analysis and documentation of clearing and settlement processes.
- OSPlus process analysis and documentation.
- Coordination and alignment with scheme management as well as various payment service providers and financial institutions on merchant processes.
- Preparation and follow-up as well as active participation in EPI meetings on technical coordination and regulatory topics in payments, including content familiarization and prioritization.
- Preparation and documentation of project and steering committees in the EPI environment.
- Creation of status reports for the subproject.
- Maintenance and structuring of Confluence pages for project documentation.
- Coordination and alignment with the issuing teams on individual customer processes as well as aligning with bank processes and acquirer processes in the Wero environment.
- Communication with payment service providers regarding merchant and bank processes in the Wero environment.
- Organizational support for project management in special tasks in the EPI and Wero environment.
- Digital filing and documentation in Confluence and Microsoft Teams.
- Planning, implementation and tracking of work packages and steps.
- Quality assurance and project control.
- Consulting on IT strategy, IT architecture and interface management in the EPI and Wero environment.
- Technical environment: Jira, Confluence, XML, JSON, MS Office (Word, Excel, Teams, PowerPoint), SharePoint, Draw.io, Innovator, 3rd-level support, ITIL, creation and updating of software documentation, interface management, OSPlus, Scrum, KYC, payment, European Payments Initiative (EPI), Wero, Microsoft Loop, Instant Payments, SCT-Inst.
Mario Steiner
Last position:
Expert in Web Analytics, Tag and Consent Management at Deutsche Bahn AG
- Conducting and analyzing web analytics
- Creating and editing tags and scripts in tag management as well as banners and other client-side web elements in consent management
- Technologies used in development: Tealium, JavaScript, IntelliJ, Git, Android Studio, Selenium, Appium, Adobe Analytics, Power Automate, Power App
Jochen Hinrichsen
Last position:
DevSecOps Expert at DB InfraGO
- Central build and delivery for 20+ applications, 100+ pipelines/day, 700+ GitLab projects
- Build pipelines for Go, Java and JavaScript
- Provisioning of 100+ components
- Quality assurance via GitLab Code Quality and SonarQube
- Checks for dependencies, licensing and vulnerabilities
- Release creation via Jira and ServiceNow
- SBOM, Supply Chain Security, distroless images
- PoC GitLab Runner: Nomad vs. Kubernetes
- Technologies: Artifactory, buildah, GitLab Premium, Go, Gradle, Jenkins, Mend, Podman
Puya Dogouri
Last position:
Quality Assurance Consultant at Federal Employment Agency
- Consulting and implementation of functional test requirements
- Responsibility for and validation of test automation solutions in an agile team
- Support for QA topics during weekly release tests
- Creating test cases using Gherkin
- Developing automated tests with Cucumber and Playwright
- Specifying and maintaining automated and manual tests
Technologies used:
- Confluence
- Jira
- Cucumber
- Playwright
- Typescript
- Java
- Git
Dragos Andrei Serediuc
Last position:
QA Tech Lead at Thinksurance
- Establishing and enforcing strong technical standards within and across teams
- Define the required standard in line with overall strategy and communicate across respective technology teams
- Understanding business and technical requirements and implemented (across teams) in an effective and timely manner
- Mentoring (Junior/Mid) Quality Assurance engineers on their path towards seniority
- Providing regular feedbacks and participate in technical interviews
- Contribute to solution architecture proactively
- Design, align, and create solutions for future features according to overall architecture concept and business requirements
- Clarify and communicate decisions from system architects into respective teams
- Challenge business requirements in workshops, refinements, and planning to come to the best possible solution
- Drive QA solution delivery in and across the team
- Support and drive the full QA process
- Execute code reviews for critical tests and accompany their execution into CI/CD
- Participate in running/monitoring and maintaining the application in production
- Follow-up on critical bugs in production system
- Help to debug and solve problems in a timely manner
Discover over 15,000 top freelancers
Statistics of experts using Groovy
Aggregated from the professional profiles of matched freelancers.
Experience
18 years (Germany: 19 years)
Position duration
2.4 years (Germany: 1.9 years)
Positions per freelancer
13 (Germany: 14)
Top business areas
Information Technology, Product Development, Project Management
Top industries
Information Technology, Banking and Finance, Transportation
Certification focus areas
Information Technology, Operations, Project Management
Bachelor's degree or higher
86% (Germany: 91%)
Master's degree or higher
29% (Germany: 53%)
Doctorate
14% (Germany: 9%)
Certifications per freelancer
3 (Germany: 2)
Most common languages
German, English, Persian
Speak two or more languages
100% (Germany: 96%)
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 Frankfurt 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 Frankfurt using Groovy
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
What Groovy is
Groovy is a JVM language for concise scripting and application code. Teams use it for build logic, test automation, automation scripts, and web applications. It fits Java stacks well and keeps day-to-day changes readable for experts who need speed without leaving the JVM.
Typical work
- Write Groovy scripts for automation and data handling
- Maintain Gradle build logic and custom tasks
- Support Grails applications and server-side features
- Create Jenkins pipelines and release steps
- Refactor Java code into cleaner Groovy modules
Ecosystem fit
Groovy is often used with Gradle, Grails, Spock, and Jenkins. Strong professionals know where to use Groovy’s dynamic style and where to keep code strict and simple. They also understand Java libraries, JVM tooling, and the build and test flow around them.
When to bring in help
Companies bring in Groovy specialists when build scripts grow messy, tests become hard to trust, or older Groovy code needs cleanup. In Frankfurt, this often comes up in finance, logistics, and enterprise IT teams that run JVM systems with mixed Java and Groovy code. Remote work is common, but on-site support helps when release flow or legacy code needs close review.
What good specialists do
Good experts write clear code that other Java teams can read. They keep scripts small, naming consistent, and dependencies under control. They also know how to debug runtime issues, review pipeline failures, and work safely in codebases where Groovy, Java, and framework code meet.
How to choose
Look for professionals who can explain why Groovy is used in your stack, not just how to write it. Strong candidates show clean examples from build automation, testing, or application work. They ask about your current JVM setup, release process, and code standards before they start.
Frequently asked questions
Everything clients usually want to know about Groovy, in one place.
Groovy is used for scripts, build logic, automated tests, pipeline code, and JVM-based web applications. Many teams choose it for work that needs to stay close to Java but feel faster to write and easier to adapt.
Groovy is usually more concise and flexible than Java, especially for scripting, testing, and Gradle or Jenkins work. Java is often better for strict, large application code, while Groovy is a strong fit when teams want speed and readable automation.
A strong Groovy specialist usually knows the Java ecosystem, Gradle, Jenkins, Spock, and often Grails. Knowledge of debugging, code review, and JVM build and test tooling is also important because Groovy often sits inside those workflows.
Groovy tasks can be small, such as fixing scripts or cleaning up tests, but larger work needs clear context on the JVM stack and release process. A freelancer should understand how your code is deployed, tested, and maintained before changing core build or application logic.
Groovy work is often remote-friendly because most tasks involve code, build files, and pipelines. In Frankfurt, on-site time can help when a team needs close coordination around legacy systems, regulated environments, or release planning with several stakeholders.
Apache Groovy help is often needed when build scripts are hard to maintain, tests are fragile, or a Grails or Jenkins setup is slowing delivery. Another sign is a codebase where Groovy and Java are mixed, but no one is confident enough to clean it up safely.
A good Groovy professional writes clear, compact code and can explain trade-offs in plain language. Look for experience with real build or test work, careful handling of Java interoperability, and examples that show they can keep complex scripts maintainable.
Yes, Groovy language skills still matter in many JVM teams because Groovy is deeply embedded in Gradle, Jenkins, Spock, and Grails. It remains useful wherever teams need expressive scripting, test code, or build automation that sits close to Java.
The average hourly rate of freelancers in Frankfurt, Germany who have used Groovy in their recent projects is 88 €, which corresponds to a daily rate of about 704 € based on an 8-hour working day.
Of the freelancers in Frankfurt, Germany who have used Groovy in their recent projects, 86% hold at least a Bachelor's degree, 29% hold at least a Master's degree, and 14% hold a doctorate.
On average, freelancers in Frankfurt, Germany who have used Groovy in their recent projects have 18 years of professional experience, with a single engagement typically lasting around 2.4 years.
The most common languages among freelancers in Frankfurt, Germany who have used Groovy in their recent projects are German (100%), English (100%), and Persian (29%).
The most common industries among freelancers in Frankfurt, Germany who have used Groovy in their recent projects are Information Technology (100%), Banking and Finance (86%), and Transportation (57%).
The most common business areas among freelancers in Frankfurt, Germany who have used Groovy in their recent projects are Information Technology (100%), Product Development (86%), and Project Management (86%).
Main locations of FRATCH Experts, who have recently used Groovy
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 
Hamburg 
Munich 
Cologne 
Dusseldorf Request a free demo
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Philipp Thomaschewski
FRATCH CEO
