
MockK Experts in Germany
matched in minutes from over 15,000 CVs with the power of AI.Hire experts who use MockK to write focused unit tests, isolate Kotlin services, and verify coroutines, flows, and suspend functions with confidence. Get fast, precise matching with vetted, available freelancers.
Meet FRATCH Experts in Germany, who have recently used MockK
Robin S.
Last position:
Senior Cloud & Backend Engineer at Media-Saturn-Holding GmbH
- Implementing applications with Kotlin and Ktor as microservices
- Using MongoDB in the MongoDB Atlas cloud
- Asynchronous communication of services via Google Pub/Sub
- Using Kotest and MockK for unit tests
- Developing an administration frontend with TypeScript, React and Express.js
- Provisioning environments in GCP using Terraform
- Implementing CI/CD processes with GitHub Actions
- Operating scalable production and test environments in GCP with Kubernetes, Helm and Flux CD
- Monitoring environments with Prometheus and Grafana
- Providing BI data in the Google BigQuery data warehouse
Matthias E.
Last position:
Lead Android Developer at Star Finanz-Software Entwicklung und Vertriebs GmbH
- Further development of the Android app "StarMoney"
- Major XML to Compose redesigns
- Introduction of new technologies and architecture
- Implementation of instant bank transfer
- Development following the agile Scrum process
Rafael K.
Last position:
Senior Android Developer / Team-Lead at IBM Deutschland
- Further development and release support for a white-label ePA component for health insurance companies
- Technologies: Android (Kotlin), Kotlin Multiplatform, Coroutines, Jetpack Compose, MVVM, StateFlow, Gradle, ProGuard
Daniel W.
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
Wolfram R.
Last position:
Backend and Flutter App Developer at WWU Münster
- Further development of the existing citizen science app with Flutter for Android and iOS to integrate new features.
- Updated the backend, including database migration.
- Used Android, iOS, Flutter, Dart, Riverpod, Drift (migration from moor), flutter_local_notifications, home_widget, flutter_markdown, and flutter_workmanager.
- Backend development with Spring Boot, Kotlin, Kotlin Flow, GraalVM, PostgreSQL, and Docker.
- Used Firebase App Testing, Testflight, as well as Google Play Console and App Store upload.
Jacqueline K.
Last position:
OTTO
- Design, development, and monitoring of microservices
- Migrating functions from a monolithic system into separate microservices
- Designing and implementing new microservices (backend and frontend)
- Setting up and maintaining a CI/CD pipeline (GitHub Actions)
- Configuring cloud infrastructure with AWS CDK and Terraform
- Designing and implementing event-driven communication with AWS SNS/SQS and Apache Kafka
- Ensuring code quality through Test Driven Development (TDD), static code analysis, and Clean Code
Discover over 15,000 top freelancers
Statistics of experts using MockK
Aggregated from the professional profiles of matched freelancers.
Experience
13 years

Position duration
1.7 years

Positions per freelancer
13

Top business areas
Information Technology, Product Development, Quality Assurance

Top industries
Insurance, Banking and Finance, Information Technology

Certification focus areas
Information Technology, Product Development, Business Intelligence
Bachelor's degree or higher
75%
Master's degree or higher
50%

Certifications per freelancer
4

Most common languages
German, English, Spanish

Speak two or more languages
100%
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 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 MockK
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.
MockK experts industry focus
See which industries our matched freelancers work in most often — every figure is calculated live from the freelancers on FRATCH.
- Insurance (100%)
- Banking and Finance (83%)
- Information Technology (83%)
- Transportation (50%)
- Manufacturing (50%)
- Retail (50%)
- Automotive (33%)
- Education (33%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
Kotlin testing
MockK is a Kotlin mocking library used to isolate services, repositories, clients, and other dependencies in tests. It is a common choice when teams need clear unit tests for Kotlin code, especially where Java-style mocking feels awkward.
What it covers
- Mocking interfaces, classes, and top-level functions
- Verifying calls, arguments, and interaction order
- Testing coroutines, suspend functions, and flows
- Stubbing callbacks, extension functions, and static behavior
Strong specialists use MockK to keep tests readable and stable. They know when to mock and when to use real fixtures, so test suites stay useful instead of brittle.
Tooling around it
MockK often sits beside JUnit, Kotlin test libraries, Gradle, and CI pipelines. In mixed codebases, experts also work with Mockito, Spring Boot test setups, and coroutine test tools when the wider stack needs it.
When companies need help
- A Kotlin project has hard-to-test dependencies
- Existing tests are noisy, fragile, or slow
- Suspend functions or flows need proper coverage
- The team is moving from Mockito to MockK
In Germany, companies often bring in freelance specialists for short test-repair work, a new service module, or support during a Kotlin migration. Remote collaboration works well when the codebase is shared clearly and the test intent is documented.
What good experts do
Good MockK professionals write tests that reflect real behavior, not just mock setup. They understand Kotlin language features, test design, and boundaries between unit, integration, and contract tests.
Signals of quality
Look for clean assertions, minimal setup, and mocks used only where they add value. A strong MockK expert can explain why a test is needed, how it fails, and how to keep it maintainable over time.
Frequently asked questions
Not sure where to start with MockK? These answers cover the essentials.
MockK is used to isolate dependencies in Kotlin tests so teams can verify behavior without touching databases, network calls, or other services. It is especially useful for unit tests around services, clients, repositories, and coroutine-based code. Many teams choose it when they want mocking that fits Kotlin syntax and language features more naturally than Java-first tools.
MockK is built with Kotlin in mind, so it handles features like suspend functions, top-level functions, and extension functions more naturally. Mockito is still common in mixed Java and Kotlin codebases, especially where a team already knows it well. For Kotlin-heavy projects, many specialists prefer MockK because the test code usually reads more cleanly.
A strong MockK specialist should also know JUnit, Kotlin test patterns, and coroutine testing. In real projects, they often work with Gradle, Spring Boot, and CI pipelines as well. Good judgment matters too, because the best test suites avoid over-mocking and keep a clear boundary between unit and integration tests.
Projects need MockK expertise when the test suite has become hard to maintain, when Kotlin code is growing quickly, or when developers need help testing complex dependencies. It is also valuable during migration work, such as moving tests from Mockito to Kotlin-native mocking patterns. A freelancer can usually help with one module, a service layer, or a broader test strategy.
Yes, MockK work is usually well suited to remote collaboration in Germany because test tasks can be reviewed directly in the codebase. Clear tickets, access to failing tests, and fast feedback from the team are more important than being in the same room. On-site work can still help during workshops or migration planning, but it is rarely required for day-to-day test implementation.
Ask which kinds of Kotlin code the MockK expert has tested before, and whether they have worked with coroutines, flows, and suspend functions. It also helps to ask how they decide what to mock and what to keep real. Good answers should focus on test design, maintainability, and the failures they have fixed, not on tool features alone.
No, MockK is most common in unit tests, but it can also support broader test setup when dependencies need to be controlled. Many specialists use it alongside integration tests rather than instead of them. The key is to avoid using mocks where a real test fixture would give more reliable coverage.
A good MockK professional writes tests that are easy to read, easy to maintain, and focused on behavior. Look for clean setup, limited use of stubs, and clear explanations for why each mock exists. If the tests feel simpler after their work, and failures point to real issues instead of fragile setup, that is a strong sign of quality.
The average hourly rate of freelancers in Germany who have used MockK in their recent projects is 96 €, which corresponds to a daily rate of about 770 € based on an 8-hour working day.
Of the freelancers in Germany who have used MockK in their recent projects, 75% hold at least a Bachelor's degree and 50% hold at least a Master's degree.
On average, freelancers in Germany who have used MockK in their recent projects have 13 years of professional experience, with a single engagement typically lasting around 1.7 years.
The most common languages among freelancers in Germany who have used MockK in their recent projects are German (100%), English (100%), and Spanish (17%).
The most common industries among freelancers in Germany who have used MockK in their recent projects are Insurance (100%), Banking and Finance (83%), and Information Technology (83%).
The most common business areas among freelancers in Germany who have used MockK in their recent projects are Information Technology (100%), Product Development (100%), and Quality Assurance (67%).
Main locations of FRATCH Experts, who have recently used MockK
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.
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