JUnit Experts in Vienna
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Meet FRATCH Experts in Vienna, who have recently used JUnit
Michail M.
Last position:
OpenShift Specialist, Developer at Insurance
Project goal: Introduce OpenShift as the run-time platform and migrate all applications to OpenShift.
My contribution: Make sure logging and monitoring for the applications were in place. Set up and put into operation the OpenShift components for logging and monitoring (Elasticsearch, Prometheus, and Grafana). Develop and implement the security concept for OpenShift. Work with developers to define and carry out the application changes needed for the OpenShift migration. Integrate monitoring into the applications.
Technical environment: Java, WebSphere Liberty, OpenShift components, Elasticsearch (ELK stack), Prometheus, Grafana.
Joseph W.
Last position:
Freelancer Cloud / Solution Architect (AWS) at A1 Bank
- I am responsible for providing solution architecture and technical assistance for a migration initiative aimed at transitioning to a new core banking system.
- The project involves replacing in-house development with a commercially available off-the-shelf core banking system operated as SaaS on AWS.
- Duties encompass solution design, technical coordination, supporting development teams, and providing IT support and troubleshooting.
- Managing over 10 global vendors and partners is crucial to project success.
- Technologies: VMWare ESXi, AWS, EKS Kubernetes, Mastercard Payment Transaction Service, Avaloq, A1 Telekom Austria infrastructure, CheckPoint FW, F5, Site-to-Site VPNs, PingID, Futurae SDK, Airlock, UC4/Automic, Firebase, iOS/Android lifecycle management, AWS IAM, AWS AppStream, AWS S3, AWS Transfer Family, QlikView, OpenAPI.
Vladislav F.
Last position:
Senior Test Automation Engineer / Test Manager at Stadt Wien – WUKSEA
- Creating test scenarios, manual test cases and test data using boundary value analysis and equivalence classes
- Executing functional and non-functional tests (manually with Postman and web application, automated with WebDriver, JUnit and NUnit)
- Setting up, automating and maintaining the test automation framework with Java, Spring Boot, Selenium and Cucumber in IntelliJ (system, regression, smoke, UI and integration tests for web front-end and SOAP API backend interfaces)
- Automating backend NUnit test cases in Visual Studio
- Test management: developing and implementing test strategy and test plans, controlling tests, quality ownership and prioritizing risk-based tests, as well as maintaining documentation in Confluence
- Detailed analysis and quality assurance of requirements
- Creating and maintaining Jenkins pipelines, ensuring quality in build & deployment
- Close collaboration with business analysts, developers, testers and test management
- Identifying, creating and tracking defects/bugs, with thorough test documentation
- Reporting test results and defect reports
- Monitoring test processes and continuous improvements
- Reviewing test data and test results in PostgreSQL database via pgAdmin
- Supporting effort estimation and backlog prioritization
- Analyzing and debugging development code System environment: Java, JUnit, Spring Boot, Selenium, Cucumber, JavaScript, Jenkins, C#, NUnit, Postman, Bitbucket, Confluence, Jira, xRay, pgAdmin, PostgreSQL, SonarQube, Maven, IntelliJ, Visual Studio, CI/CD, SOAP API interfaces
Nedim K.
Last position:
Manual Tester and Test Automation Engineer at IT-Systemhaus der Bundesagentur für Arbeit
- Design appropriate test cases to verify the GUI in Azure Test Plans
- Creation and execution of manual test cases
- Test design for user stories to be implemented in the current sprint
- Analysis of deviations/bugs based on log files and Kibana dashboards
- Creation of bug tickets with error description, screenshots, and short videos
- Prioritization of open bug tickets together with the PO
- Retest of bugs and hotfixes
- Execution of manual tests to ensure a 100% fulfillment rate of all functional requirements
- Selection, installation, and maintenance of a test automation tool (Selenium)
- Implementation of automated regression tests
- Continuous expansion of the object repository and adaptation of automated test cases (acceptance, integration, and system tests)
- Creation of test logs before each sprint change
Javid A.
Last position:
B2B Contract - Senior Fullstack developer (Java + Angular)
- Project: E-Platform with 100k users
- Skills: Java, Spring, Spring Boot
- TechStack: Angular 18, Java 17, Spring Boot, Oracle DB, Spring Data, JPA, Hibernate, Oracle, Postgres, SQL
Aaron H.
Last position:
Career Break
- Big move, focus on DIY hobbies, small personal software projects.
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Statistics of experts using JUnit
Aggregated from the professional profiles of matched freelancers.
Experience
18 years
Position duration
1.7 years
Positions per freelancer
8
Top business areas
Information Technology, Product Development, Quality Assurance
Top industries
Information Technology, Insurance, Transportation
Certification focus areas
Information Technology, Quality Assurance, Project Management
Bachelor's degree or higher
83%
Master's degree or higher
33%
Certifications per freelancer
3
Most common languages
German, English, Bosnian
Speak two or more languages
100%
Based on our profile pool as of 16 Oct 2026.
Daily rate distribution
The chart shows how the daily rates of experts in this technology in Vienna 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 Vienna using JUnit
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 16 Oct 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
JUnit 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%)
- Insurance (83%)
- Transportation (83%)
- Government and Administration (67%)
- Banking and Finance (50%)
- Telecommunication (50%)
- Education (17%)
- Healthcare (17%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
What JUnit does
JUnit is a testing framework for Java and the JVM ecosystem. It helps teams verify application behavior through repeatable unit tests, integration tests, parameterized tests, and lifecycle controls. Its results support safer refactoring and dependable delivery.
JUnit 5 structure
JUnit 5 separates the platform, Jupiter programming model, and Vintage support for older suites. Strong specialists understand annotations, assertions, assumptions, nested tests, extensions, and parameterized test sources. They can also maintain JUnit 4 code while planning a controlled migration.
Ecosystem and tooling
JUnit work is closely connected to the tools that compile, run, and report tests:
- Maven Surefire and Failsafe configuration
- Gradle test tasks and test reports
- Mockito, AssertJ, and Testcontainers integration
- Spring Boot test slices and application contexts
- CI pipelines with dependable test isolation
Where companies use it
Companies use JUnit in backend services, APIs, financial systems, e-commerce applications, and data-processing workloads built with Java or Kotlin. Tests may cover domain rules, REST endpoints, persistence, messaging, security, and service integrations. Vienna teams can collaborate with local specialists on-site or work effectively with remote professionals when documentation and feedback loops are clear.
When freelance expertise helps
Freelance specialists are useful when a test suite is slow, brittle, or difficult to trust. They can establish coverage around legacy code, investigate flaky tests, prepare a JUnit 4 to JUnit 5 migration, or introduce test practices during a new service build. They also help teams connect testing with release gates without masking real failures.
Signs of strong specialists
A capable JUnit professional tests observable behavior rather than implementation details. They choose focused mocks, realistic fixtures, and meaningful assertions, while keeping tests readable and independent. Look for experience with:
- Diagnosing flaky and order-dependent tests
- Designing fast unit tests and purposeful integration tests
- Reviewing CI reports and failure diagnostics
- Working across Java, Kotlin, Spring, Maven, or Gradle
- Explaining test strategy to product and engineering teams
Frequently asked questions
Before you brief your next project: the most common questions about JUnit.
JUnit is used to test Java and JVM applications through repeatable automated checks. Teams use it for unit, integration, parameterized, and regression tests covering business logic, APIs, persistence, and service integrations.
JUnit 5 provides a modular platform, the Jupiter programming model, richer extension support, and modern parameterized testing. JUnit 4 remains common in older codebases, so a specialist should understand both frameworks and migration risks.
A strong JUnit freelancer usually works comfortably with Java or Kotlin, Maven or Gradle, and a CI system. Mockito, AssertJ, Spring Boot testing, Testcontainers, REST testing, and database verification are valuable when the project covers more than isolated classes.
The required experience depends on the codebase and test risks, not on a fixed number of years. JUnit work on a greenfield service may need focused testing skills, while legacy migrations, flaky suites, and complex integration environments call for deeper diagnostic and architectural judgment.
Yes. JUnit projects are often suitable for remote collaboration because tests, build files, and CI results are shared through version control. Clear acceptance criteria, reliable access to test environments, and concise written communication matter more than being in the same office, while Vienna-based teams may still prefer occasional on-site sessions.
Review whether JUnit tests are readable, deterministic, focused, and tied to meaningful behavior. Ask how the specialist handles flaky tests, test data, isolation, failure diagnosis, and the balance between unit and integration coverage.
Bring in a JUnit specialist when the suite blocks releases, produces unreliable feedback, or needs a structured migration. External expertise can also help establish testing patterns for a new Java service and leave the internal team with maintainable conventions.
JUnit is a core test framework, not a complete testing strategy. It can coordinate many checks, but teams may also need browser testing, contract tests, containerized dependencies, static analysis, performance checks, and deployment validation depending on the system.
The average hourly rate of freelancers in Vienna, Austria who have used JUnit in their recent projects is 90 €, which corresponds to a daily rate of about 720 € based on an 8-hour working day.
Of the freelancers in Vienna, Austria who have used JUnit in their recent projects, 83% hold at least a Bachelor's degree and 33% hold at least a Master's degree.
On average, freelancers in Vienna, Austria who have used JUnit in their recent projects have 18 years of professional experience, with a single engagement typically lasting around 1.7 years.
The most common languages among freelancers in Vienna, Austria who have used JUnit in their recent projects are German (100%), English (100%), and Bosnian (33%).
The most common industries among freelancers in Vienna, Austria who have used JUnit in their recent projects are Information Technology (100%), Insurance (83%), and Transportation (83%).
The most common business areas among freelancers in Vienna, Austria who have used JUnit in their recent projects are Information Technology (100%), Product Development (100%), and Quality Assurance (50%).
Main locations of FRATCH Experts, who have recently used JUnit
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.
Countries:
Vienna 
Graz Request a free demo
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