Groovy Experts in Germany
in minutes from over 15,000 CVs with vetted specialists and the power of AI.Hire experts who build Groovy services, Gradle build logic, Spock tests, and scripting for JVM systems. Work with specialists who can join remote teams or support delivery in Germany, with fast, precise matching and vetted, available freelancers.
Meet FRATCH Experts in Germany, who have recently used Groovy
Matthias Spiller
Last position:
Software Developer and Consultant at CLADE GmbH
- Analysis of the existing CAN communication between microcontrollers
- Analysis of the sensors used and the measured values collected
- Planning the CAN messages for transmitting the measured values
- Iterative adjustment of the microcontroller code to the new CAN messages
- Cross-compilation from x64 to arm64
Goran Popovic
Last position:
Test Manager & Analyst at Festo / Questax GmbH
Project goal: Carrying out system tests and validating industrial communication and control systems, including requirements definition and verification.
Responsibilities:
- Test planning, test execution
- Test strategy, test cases, and test specifications
- Requirements analysis
- Ensuring traceability between requirements, test cases, and defects
- Carrying out regression and integration tests
- Defect analysis
- Simulation and validation
- NetSniffer Wireshark
- Supporting test automation (Python, CI/CD)
- Reporting
- Stakeholder coordination and agile collaboration (Scrum / SAFe / Kanban)
- V-Model
- CI/CD automation with Python, Groovy, and frameworks (Selenium, PyTest)
Technologies:: CAN, Modbus, Ethernet, PLC, PROFINET, Codebeamer ALM, Scrum, SAFe, MS Teams, Git, CI/CD with GitLab CI and TeamCity, Windows Batch, FAS, Wireshark, Python, Enterprise Architect (EA), AI tools (e.g. ChatGPT, Microsoft Copilot), VS Code, Tia Portal, SCL, Python (Selenium, PyTest)
Niko Schmuck
Last position:
Developing Architect, Technical Lead "gridlytics" at HH Energienetze
- Building a data integration platform for high, medium, and low voltage assets for contextual analysis of time series with master data from the SCADA control system (IEC 60870 104), INIS, and SAP.
- Responsibility for the architecture and implementation of the solution, as well as sparring partner for the Product Owner.
- Use of Kotlin, Spring Boot, Maven, TimescaleDB, PostgreSQL, liquibase, Elements IoT, Docker, Kubernetes, Grafana, Python, jupyter, and various API gateways.
Priyanka Sarang
Last position:
Business Consultant (Software Engineering) at Boehringer Ingelheim
- Developed cloud-native enterprise applications on SAP Business Technology Platform using Node.js, SAP UI5, and RESTful APIs, delivering solutions across training management, procurement, employee information, and logistics domains
- Served as the primary developer for the maintenance, enhancement, and production support of three enterprise applications, delivering new features, resolving production issues, and coordinating releases with business stakeholders
- Experienced in leveraging AI-assisted development tools such as Microsoft Copilot to accelerate feature development, generate code, prototype solutions, and support application migration and modernization
- Designed backend services, domain models, and SAP Fiori/UI5 interfaces, implementing business workflows, role-based access control, validations, scheduling, reporting, and data import/export capabilities
- Designed and integrated enterprise services with SAP SuccessFactors, SailPoint, ERP systems, and external Learning Management APIs, including automated synchronization for 11,000+ user data
- Designed and implemented AMQP-based event-driven services processing up to 500 RFID parcel scan events per day for a logistics application
- Managed deployments and application operations using CI/CD pipelines, SAP Solution Manager, SAP BTP Cockpit, Kibana, and cloud monitoring tools, performing root-cause analysis and resolving production incidents
- Managed application dependencies by resolving npm package version conflicts and remediating critical and high-severity security vulnerabilities, ensuring production compliance and application stability
- Collaborated with architects, business users, SAP governance teams, and distributed Agile teams throughout technical design, code reviews, sprint planning, documentation, and software delivery
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.
Boris Solos
Last position:
Generalist expert for software development at Mercor
- Training the AI models, evaluating images and texts for UI/UX, turning the provided data into insights via OpenAI Feather as part of the machine learning workflow
Technologies: OpenAI Feather
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)
Olfa Azzabi
Last position:
Senior Embedded Software Engineer / Function Developer at Enginius GmbH (FAUN GROUP)
- Developed model-based software for hydrogen tank control units using MATLAB/Simulink, aligned with ISO 26262 functional safety requirements
- Performed system integration and software verification across MIL and HIL environments using dSPACE and Vector tools
- Defined software architecture (SADS) with interface specifications for CAN, analog, and digital communication protocols
- Generated production-ready embedded C code using Simulink Embedded Coder; created and maintained A2L calibration files with CANape
- Designed and executed MIL/HIL test cases ensuring full coverage of functional and safety requirements
- Implemented CODESYS PLC applications on IFM ecomatController; applied CAN and Modbus TCP/IP communication protocols
- Contributed to HMI/UI development using Qt/C++ on Linux (Qt Creator)
- Applied agile Kanban workflow with Git-based version control (Bitbucket)
Tools: MATLAB, Simulink, CANape, CANalyzer, PCAN-View, Embedded Coder, CODESYS, TTC2038/PXROS, Codebeamer, Jira, Git
Stephan Giuliari
Last position:
Senior Backend Software Developer at Mercedes-Benz Tech Innovations
- Further development and operation of a central backend service providing vehicle inventory for international Mercedes-Benz online stores
- Enhancement of a vehicle reservation service as part of the checkout process
- Design and implementation of a highly scalable end-to-end test architecture focused on maintainability, reusability, and a high number of automated test cases
- Development of a multi-layered test infrastructure with a clear separation of test logic and access layers
- Development of an initialization and caching architecture to significantly speed up local and CI/CD-based test runs
- Development of an AI-driven review architecture for automated evaluation and quality assurance of end-to-end tests
- Development of a dashboard to consolidate vehicle context across multiple backend systems, including AI-generated summaries and condensed case analyses
- Integration and further development of connections to various reservation systems via Apache Kafka and REST
- Design of new microservices and support in architectural decisions
- Risk analysis and planning of microservice migrations
- Technologies: Java, Spring, Spring Boot, Gradle, Maven, Apache Kafka, REST, OpenAPI, Swagger, GitHub, Confluence, CI/CD, Microservices, AI, LLMs
Srinivasu Kakaraparti
Last position:
Atruvia
Project: Tax Exemption Order Application
The client has an existing application for creating and maintaining tax exemption orders for end customers; design and implementation of a comparable application for internal employees.
- Design and implementation of microservices and the UI for the business area "tax exemption orders" using Domain Driven Design as well as Spring Boot and Angular.
- Implementation of reactive, non-reactive, and asynchronous APIs (Spring REST, WebFlux, GraphQL).
- Development of the Angular application, including state management using Signals, RxJS Observables, and subscriptions.
- Securing the API and the application using OAuth2, JWT, and OpenID Connect.
- Configuration and setup of CI/CD pipelines with Jenkins.
- Collaboration with cross-functional teams and conducting code reviews.
Environment: Java, Spring Boot, Angular 18 & 19 (standalone, signals), RxJs, Bootstrap CSS, Vitesting, OpenShift, Istio, microservices, Kafka, Dynatrace, Jenkins, GitLab, Graylog, Sonar, Oauth2, OracleDB
Abhiroop Basu
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.
Olaf Radicke
Last position:
DevOps Architect / Consultant at Authority with increased security requirements
- Identification of requirements (legal, organizational, and technical)
- Design of solution architectures
- Evaluation of concepts and technologies
- Preparation of decision templates
- Architectural Decision Records (ADR)
- Coordination of implementation
- Review of implementations
- Documentation
Nune Isabekyan
Last position:
Fractional CTO at OpsWorker
OpsWorker turns Kubernetes alerts into root-cause analyses, on top of the monitoring a team already runs. I lead the technical side: the agent architecture, the AWS infrastructure it runs on (fully inside EU regions), and the engineering decisions behind it, read-only in the cluster by default, human in the loop for judgment. The stack underneath: Amazon Bedrock and Bedrock AgentCore, agents built with the Strands Agents SDK, the Claude and OpenAI APIs, and the Kubernetes API.
Stephan Heilmann
Last position:
Development, Tester at Telecommunications
Set up an operational contract information system. This is mainly used as an order management system - for migrating existing contracts as well as for creating and providing new contract bundles.
Sales agents can use it to order new services, modify existing ones and migrate service types, as well as provide price information to the customer.
This supports the marketing of new services as well as the replacement of old services for existing customers.
In addition, existing data is imported, processed (ETL) and provided via services for further use in the portal front end.
Analysis of the business and technical use cases (workflows, involved processes/systems, communication paths, security requirements)
Further development / creation of the front-end components (React/JavaScript)
Design and implementation of the business logic
Creation of the functional and technical component documentation
Test execution / test automation (Cypress, test coverage)
Team size: 8 people
Technologies: React, JavaScript, Rest (JSon), Yaml, Markdown, MariaDB (SQL), Docker, Swagger, Cypress
Tools: Webstorm, ReactDeveloperTools, VisualStudioCode, Word, DBeaver, Git/GitLab
Work management: GitLab
Platform: Linux
Build management: GitLab
Cagdas Kahraman
Last position:
Software Consultant at SThree GmbH / Rewe Systems
- Angular 13
- Java (Spring)
- Kafka
- Kubernetes
- New development and enhancements
- Proof of concept development
- Analysis and resolution of technical errors
- Technical consulting
Discover over 15,000 top freelancers
Statistics of experts using Groovy
Aggregated from the professional profiles of matched freelancers.
Experience
19 years
Position duration
1.9 years
Positions per freelancer
14
Top business areas
Information Technology, Product Development, Quality Assurance
Top industries
Information Technology, Banking and Finance, Retail
Certification focus areas
Information Technology, Product Development, Project Management
Bachelor's degree or higher
91%
Master's degree or higher
53%
Doctorate
9%
Certifications per freelancer
2
Most common languages
German, English, French
Speak two or more languages
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 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 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
Groovy at a glance
Groovy is a JVM language used for concise business logic, automation, and test code. It fits teams that want Java interoperability with a more flexible syntax. Companies use it for scripts, services, and build-time tasks.
Common use cases
- Gradle build scripts and custom build logic
- Spock test suites and test data setup
- JVM services, APIs, and internal tools
- Automation scripts for delivery and operations
Groovy is often chosen when Java alone feels too verbose for fast-changing code.
Ecosystem and tools
Groovy works closely with the Java ecosystem, especially Gradle, Spock, Spring, and common JVM libraries. Strong specialists know how to read Java code, mix Groovy with existing services, and keep scripts maintainable. They also understand when to use dynamic features and when to stay strict.
When companies need help
Companies bring in freelance Groovy experts when build logic becomes hard to maintain, tests need a cleaner style, or older scripts need careful updates. This is also common during migrations from Java-only codebases, or when a team in Germany needs short-term help on a JVM project without adding long onboarding overhead.
What strong specialists do
- Write clear, idiomatic Groovy with good structure
- Refactor build and test code without breaking pipelines
- Keep Java interop clean and predictable
- Spot weak patterns in scripts and shared utilities
Good professionals document decisions, avoid clever code, and leave systems easier to support.
Hiring for Groovy
Groovy expertise matters most where build scripts, tests, and JVM code all meet. The best specialists can move between delivery work and maintenance work, and they understand how to keep mixed Java and Groovy code stable. For remote or Germany-based collaboration, clear communication and reading legacy code quickly are just as important as syntax.
Frequently asked questions
Everything clients usually want to know about Groovy, in one place.
Groovy is mainly used for JVM scripting, build logic, and test code. It is common in Gradle builds, Spock tests, and internal automation where concise syntax helps teams move faster. It can also sit inside larger Java systems without forcing a full rewrite.
Groovy is usually more concise and flexible than Java, especially for scripts, tests, and build files. Java is often preferred for stricter structure and large application code, while Groovy shines when speed and readability matter in smaller or supporting parts of the system. Many teams use both together.
Hire a Groovy specialist when build scripts are fragile, tests are hard to maintain, or existing Groovy code needs refactoring. It also helps when a team is migrating legacy scripts, integrating with Gradle, or needs short-term support on a JVM project. A focused specialist can reduce risk and keep delivery moving.
A strong Groovy freelancer usually brings solid Java knowledge, plus experience with Gradle and Spock. Spring, CI pipelines, and general JVM debugging are also valuable. For older systems, comfort with legacy code and mixed-language repositories matters a lot.
No. Groovy is well known for Gradle and Spock, but it is also used for scripts, small services, data transformation, and admin automation. The key strength is that it fits naturally into JVM environments where concise code is useful.
A simple script or a small Gradle task may need only a focused Groovy specialist. A larger migration, shared build logic, or a mixed Java/Groovy codebase needs someone who understands maintainability, test strategy, and Java interop. The more central the code is to delivery, the more experience matters.
Yes, Groovy work is often well suited to remote collaboration because build files, tests, and JVM code are easy to review in pull requests. For teams in Germany, a remote specialist can still fit well if communication is clear and the codebase is well documented. On-site help is mainly useful for tight workshops or complex migrations.
Look for a Groovy professional who writes readable code, keeps Java interop clean, and avoids overusing dynamic features. Good signs include strong Gradle or Spock work, careful refactoring, and clear explanations of trade-offs. Quality shows up in stable builds, maintainable tests, and code that other specialists can support.
The average hourly rate of freelancers in Germany who have used Groovy in their recent projects is 91 €, which corresponds to a daily rate of about 732 € based on an 8-hour working day.
Of the freelancers in Germany who have used Groovy in their recent projects, 91% hold at least a Bachelor's degree, 53% hold at least a Master's degree, and 9% hold a doctorate.
On average, freelancers in Germany who have used Groovy in their recent projects have 19 years of professional experience, with a single engagement typically lasting around 1.9 years.
The most common languages among freelancers in Germany who have used Groovy in their recent projects are German (99%), English (96%), and French (21%).
The most common industries among freelancers in Germany who have used Groovy in their recent projects are Information Technology (96%), Banking and Finance (47%), and Retail (45%).
The most common business areas among freelancers in Germany who have used Groovy in their recent projects are Information Technology (99%), Product Development (92%), and Quality Assurance (68%).
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 
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Cologne 
Frankfurt 
Dusseldorf Request a free demo
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FRATCH CEO
