REST Assured Experts in Germany
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Meet FRATCH Experts in Germany, who have recently used REST Assured
Tymofii Sukhachov
Last position:
Senior Backend Developer at Medavis
- Developed backend features for Modern RIS, a web-based Radiology Information System integrated with the existing Classic RIS via WebView.
- Worked on a modular Spring Boot backend covering clinical workflows such as appointments, examinations, patients, orders, reporting, billing, and inventory.
- Contributed to event-driven architecture using domain events to decouple workflows across backend modules.
- Implemented REST/OpenAPI endpoints, service-layer business logic, DTO mapping, validation, and integration points for the React frontend.
- Worked with PostgreSQL-backed domain models, Liquibase database changes, read/write model separation, and legacy RIS database structures.
- Integrated authentication and authorization flows using Keycloak and OAuth2.
- Added and maintained unit/integration tests using JUnit, Rest Assured, Testcontainers, and project-specific test utilities.
- Supported CI/CD and local development workflows using Maven, Docker Compose, Jenkins, and generated OpenAPI clients.
Tech stack: Java 21, Spring Boot 3.5, Maven, PostgreSQL, Liquibase, Keycloak, OAuth2, REST, OpenAPI/Springdoc, MapStruct, Lombok, Docker, Testcontainers, Jenkins.
Daniel Sedlack
Last position:
Senior Software Engineer at energielenker solutions GmbH
- Designed and implemented a Python-based ETL pipeline with the Dagster framework to transform raw energy data from heterogeneous sources using InfluxDB and visualizations in Grafana
- Defined time-based and dependency-based jobs
- Deployed to managed Kubernetes clusters using Helm
- Integrated InfluxDB Cloud
- Prepared data for use in Grafana, including cleaning, normalization, and time-based resampling in Python
- Developed dashboards and visualizations in Grafana
- Developed unit tests with mocking using pytest
- Set up a CI/CD pipeline in GitLab
Technologies: Python, Dagster, InfluxDB, Grafana, pandas, pytest, REST, CI/CD, GitLab, Container, Kubernetes, Helm, Docker, Cloud
Marcus Biel
Last position:
Java Cloud Expert at Unknown
- Modernized and modularized a legacy monolith to enable independent team workflows
- Migrated from Java 8 to Java 21 and from Spring Boot 2 to Spring Boot 3.3
- Simplified Maven project structure, reducing build time from 15 minutes to 50 seconds
- Converting architecture to a hexagonal DDD architecture with end-to-end integration tests using RestAssured and JUnit 5
- Tools and technologies: Java 8-22, Spring Boot, Mockito, AssertJ, RestAssured, Hibernate, OracleDB, Flyway, REST, JSON, Docker, Kubernetes, AWS, Bitbucket, GitHub, SonarQube, IntelliJ IDEA Ultimate
Mariam Amr Zayed
Last position:
Software Test Engineer at Sonnen Egypt
Ingo Dettling
Last position:
Analytics at BaFin - Federal Financial Supervisory Authority Frankfurt
- Introduction of methods for developing and automated deployment of cloud-native software and machine learning applications in OpenShift clusters
- Development of various programs in Python
- Technologies: Kubernetes, OpenShift, Kustomize, ArgoCD, Tekton, Docker, PodMan, Airflow, IntelliJ, PyCharm, Git, Bitbucket, Jira, Confluence, Python
Niels Majer
Last position:
Senior Software Developer / Cloud Architect at Biesterfeld SE
- Architected ETL services for event-driven data exchange between enterprise systems on a Kafka streaming backbone.
- Optimized CI/CD pipelines for Azure AKS deployments and improved OpenSearch monitoring and alerting for proactive incident detection.
Tech: Java / Kotlin, Quarkus, Kafka / Avro, Azure / AKS, Azure Storage Container, ArgoCD, GitLab CI, OpenSearch, Terraform
Vitor Rodrigues
Last position:
Test Coordinator Automation at Pro4all
- Designed and built from scratch the automation framework using Playwright, Typescript, JavaScript, Gherkin, Cucumber, BDD, Maven, IntelliJ IDEA
- Defined, developed and maintained test plans, test scripts, reports and other QA documentation in Confluence
- Created and maintained test data with SQL Server Management Studio, Toad and Faker.js
- Performed web services and API testing using Swagger Open API, SoapUI, JSON, HTML and XML
- Executed functional, smoke, regression, black box, GUI, cross-browser, UAT and E2E testing using CrossBrowserTesting and Safari Web Inspector
- Integrated and maintained automated scripts within sprints following Kanban, CI/CD, GitHub, Docker, Azure Pipelines, Agile, Scrum, Kafka and Kibana
- Raised and managed defects in Azure DevOps
- Conducted mobile testing with Robot Framework and Appium
Ayhan Gezer
Last position:
Senior QA Engineer / Test Automation Engineer / SDET at Rewe digital
Consulting, designing, and implementing the software testing lifecycle for multiple Android apps and backends Introducing test automation with Appium, SpringBootTest, RestAssured Setting up and managing emulators Developing an E2E library, an integration library, a Testcontainers library, and other libraries Developing, implementing, and advising on CI strategies Building the test environment with Testcontainers and virtualization Developing and implementing test cases for integration tests and end-to-end tests Establishing a maintainable test architecture with low entry barriers to simplify the creation of automated tests Some tools and technologies used: JUnit, RestAssured, Testcontainers, Kubedock, Appium, Android emulator, Jira Xray, Mockito, WireMock, Spring Framework, Kotlin
Martin Grambauer
Last position:
SAP Test Data Management Consultant at Siemens AG
End-to-end quality assurance in a global S/4HANA transformation program.
Automated test data setup, evaluation of search and generation solutions, and PoC execution (K2View, EPI-USE).
Coordination between Siemens teams and external partners, and structured knowledge transfer to internal stakeholders.
Created a basis for PoC decisions and sped up tool selection.
Standardized test data provisioning and noticeably reduced lead times.
Established governance for test data processes (policies, roles, KPIs).
Sustainable know-how transfer: empowered internal teams to operate solutions on their own.
Methods & technologies: S/4HANA, SAP, K2View, EPI-USE, test data management, data masking, data provisioning, test strategy, test management, coaching & enablement, Azure DevOps, Microsoft Office 365, Gemini.
Mangal Mahalinge
Last position:
Trainee Product Management at Digitale Leute Schule
- Remote learning with experts and 636 instructional units.
- Product management bootcamp teaching agile methods and software tools for modern product management in complex software projects.
- User experience (UX) · product management · Figma (software) · user-centered design · Scrum · agile project management · Jira · Confluence · product discovery · backlog management · user experience design (UED) · prototyping · lean thinking · product roadmapping · user stories · Miro collaboration platform · application monitoring tools · performance metrics · lean product management · product design kickoff indicators (KPI) & tracking events · product strategy · business modeling · product vision & goals · product discovery.
Musa Musakhanli
Last position:
Qa Engineer at TD Bank
- Designed and implemented an automation test framework using Junit and Maven, developing BDD scripts with Cucumber and reusable methods for application behavior.
- Created test data using automation scripts with Selenium WebDriver, Java, and Python, validating UI components, popup windows, and mouse movements.
- Conducted API functional testing of RESTful web services using Postman.
- Automated test execution using Maven and integrated with Jenkins, achieving a 20% reduction in regression testing time.
Yvonne Schirm
Last position:
Systemic Holistic Constellation Work (Advanced Training)
- Advanced training in systemic holistic constellation work with a focus on structural and family dynamics
Orhan Keskin
Last position:
kv.digital GmbH
- Backend development work for appointment and doctor services, including the implementation of various requirements for managing doctor appointments.
- SCRUM/Kanban
- Java 21
- IntelliJ Idea
- SpringBoot (MVC, Data JPA, …)
- GIT
- Confluence
- JIRA
- Maven
- CI: Jenkins
- Docker
- ActiveMQ
- MariaDB
- Solr
- Liquibase
- Testcontainer
- JUnit5
- Mockito
Daniel Witt-Surmann
Last position:
Senior Developer / Deputy Project Lead at Finanz Informatik GmbH & Co. KG
Worked as a Senior Developer
Worked as a Deputy Project Lead
Technologies: Java (Spring), React
Environment: OSPlus, MKP
Developed various standalone tools
Developed unit and Selenium tests
Integrated REST APIs
Full-stack development
Managed and planned a project to migrate an existing application to a new software stack
Agile project approach
Bela Bocsak
Last position:
Full Stack Lead Developer, Backend Architect at Telefonica (O2)
The software supports the complete planning and approval of antennas for mobile telephony.
The system was implemented using an event-driven microservice architecture for cloud-native deployment with Quarkus on the backend, Kafka for communication, and Angular for the frontend. Services run on Kubernetes in Google Cloud. A special challenge was synchronizing with the legacy system still used by some users.
Discover over 15,000 top freelancers
Statistics of experts using REST Assured
Aggregated from the professional profiles of matched freelancers.
Experience
19 years
Position duration
1.8 years
Positions per freelancer
13
Top business areas
Information Technology, Quality Assurance, Product Development
Top industries
Information Technology, Banking and Finance, Retail
Certification focus areas
Information Technology, Product Development, Project Management
Bachelor's degree or higher
94%
Master's degree or higher
44%
Doctorate
13%
Certifications per freelancer
3
Most common languages
German, English, French
Speak two or more languages
100%
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 REST Assured
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
API testing
REST Assured is used to test REST APIs in Java projects. It helps professionals send requests, inspect JSON or XML responses, and verify status codes, headers, and payloads. Companies bring in specialists when API quality needs to be checked beyond manual testing.
What it covers
It fits well for service-level checks in microservices, backend systems, and integration layers.
- Request and response validation
- Authentication flows and token handling
- JSON path and XML assertions
- Negative and edge-case testing
Tooling around it
Strong specialists often work with JUnit, TestNG, Maven, Gradle, and CI systems. They also know how to keep tests readable, maintainable, and aligned with the API contract. In Germany, this is common in product teams that need clear collaboration with English-speaking or mixed-language groups.
When companies need help
Freelance expertise is useful when a team needs to cover a new API, improve a fragile test suite, or speed up delivery before a release. It is also helpful when test code is slow, duplicated, or too tightly coupled to implementation details. Good experts can quickly clean up the test design and keep the suite reliable.
What strong professionals do
A good REST Assured specialist focuses on clarity, reuse, and stable assertions. They understand test data setup, environment handling, and how to avoid brittle tests that fail for the wrong reason. They also think about reporting, traceability, and how tests fit into delivery workflows.
Search terms and fit
People may search for REST Assured as RestAssured or the REST Assured library. All of these usually point to the same Java-based API testing approach. The best professionals can explain where it belongs in the stack and when another tool is a better fit.
Frequently asked questions
Everything clients usually want to know about REST Assured, in one place.
REST Assured is used to test REST APIs from Java code. It is a strong fit when a team wants automated checks for status codes, headers, payload content, and authentication behavior. It is especially useful for service and integration testing.
REST Assured is code-first, so it fits teams that want tests in the same repository as the application and executed in CI. Postman is often easier for manual exploration, while JMeter is better known for load testing. Many teams use REST Assured for automated API checks and the others for different tasks.
A strong REST Assured professional usually knows Java, JUnit or TestNG, Maven or Gradle, and how to work with JSON and XML. They should also understand authentication, test data setup, and CI pipelines. Knowledge of API design and contract validation is a plus.
The right REST Assured expert depends on the state of your API test suite. A small cleanup may need someone who can quickly stabilize existing tests, while a larger rollout needs someone who can shape standards and structure. Look for practical delivery, not just familiarity with the library.
Yes, REST Assured work is usually remote-friendly because most tasks are code, tests, and review comments. In Germany, many teams collaborate in English or a mix of German and English, so clear written communication matters. On-site time is only needed when the team wants closer alignment on test strategy or release routines.
A high-quality REST Assured suite is readable, stable, and focused on behavior that matters. It avoids duplicated setup, unclear assertions, and fragile checks tied to internal implementation details. Good suites are easy to extend when new endpoints or rules are added.
REST Assured is most common in Java projects, but that is also its strength because it integrates naturally with the Java testing stack. It is not a general-purpose UI tool. Teams use it when they want expressive API tests that live close to the codebase.
Ask whether the REST Assured specialist has worked with your API style, your authentication flow, and your build or CI setup. It also helps to ask how they structure reusable helpers, test data, and environment configuration. A good answer should sound practical and specific, not abstract.
The average hourly rate of freelancers in Germany who have used REST Assured in their recent projects is 103 €, which corresponds to a daily rate of about 822 € based on an 8-hour working day.
Of the freelancers in Germany who have used REST Assured in their recent projects, 94% hold at least a Bachelor's degree, 44% hold at least a Master's degree, and 13% hold a doctorate.
On average, freelancers in Germany who have used REST Assured in their recent projects have 19 years of professional experience, with a single engagement typically lasting around 1.8 years.
The most common languages among freelancers in Germany who have used REST Assured in their recent projects are German (92%), English (92%), and French (17%).
The most common industries among freelancers in Germany who have used REST Assured in their recent projects are Information Technology (92%), Banking and Finance (63%), and Retail (46%).
The most common business areas among freelancers in Germany who have used REST Assured in their recent projects are Information Technology (96%), Quality Assurance (83%), and Product Development (79%).
Main locations of FRATCH Experts, who have recently used REST Assured
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
