MockK Experts in Germany
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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 29 Oct 2026.
Daily rate distribution
The chart shows how the daily rates of experts in this technology in Germany 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 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 29 Oct 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
What MockK does
MockK is a mocking library built for Kotlin. It lets test suites replace real dependencies with controlled doubles, verify calls, stub responses, and test interaction-heavy code without relying on external services. Its Kotlin-first API supports regular classes, objects, top-level functions, extension functions, constructors, and coroutines.
Kotlin testing scope
MockK is used in unit and component tests for Kotlin backends, Android applications, shared multiplatform code, and service integrations. It helps teams check business rules, error handling, asynchronous flows, and collaboration between classes while keeping tests focused and repeatable.
- Stub repositories, HTTP clients, queues, and configuration services
- Verify coroutine calls and ordered interactions
- Test singleton objects, static-like functions, and constructors
- Isolate Android and domain-layer dependencies
Ecosystem and tooling
Strong MockK work connects the library to Kotlin, JUnit 5, Gradle, and common assertion tools such as Kotest or AssertJ. Professionals also understand coroutine test utilities, Android test boundaries, dependency injection, and CI systems that run tests consistently across local and hosted environments.
When specialists help
Companies often bring in freelance expertise when a Kotlin codebase has slow or fragile tests, difficult legacy dependencies, or a migration from Java-oriented Mockito practices. In Germany, remote collaboration is common, while on-site workshops can help teams align on test design, language expectations, and delivery standards.
- Establish a mocking strategy for a new Kotlin service
- Stabilize flaky tests during a release or migration
- Improve coverage around coroutines and integration boundaries
- Review test architecture before a major refactoring
What quality looks like
Effective MockK tests verify meaningful behavior rather than implementation details. A strong professional uses clear fixtures, limited mocking, explicit coroutine control, and sensible cleanup for object or static mocks. They also know when a fake, stub, or integration test is safer than a mock.
Selecting the right expertise
Ask for examples of Kotlin test suites that cover asynchronous code, dependency injection, and failure paths. The right specialist can explain why a test should mock a dependency, how isolation affects confidence, and how the suite will run in Gradle and CI. They should also be comfortable diagnosing MockK exceptions and keeping tests readable as the product changes.
Frequently asked questions
Not sure where to start with MockK? These answers cover the essentials.
MockK is used to create mocks, spies, and other test doubles in Kotlin test suites. It helps professionals isolate business logic from databases, APIs, Android components, queues, and other dependencies while verifying calls and returned behavior.
MockK is designed around Kotlin language features such as coroutines, objects, top-level functions, extension functions, and final classes. Mockito remains common in Java-oriented codebases, but MockK can provide a more natural Kotlin testing style when the surrounding suite is Kotlin-first.
MockK work is strongest when combined with Kotlin, JUnit 5, Gradle, dependency injection, and coroutine testing. Experience with Android testing, Kotest, AssertJ, CI pipelines, and contract or integration testing is also valuable.
MockK expertise should match the risk and complexity of the test suite rather than a fixed time period. A smaller unit-test task may need focused Kotlin testing knowledge, while a legacy migration or coroutine-heavy system calls for someone who can review architecture and reduce brittle mocks.
MockK projects are well suited to remote collaboration because test changes, CI results, and review comments are easy to share asynchronously. Teams in Germany should clarify working hours, documentation standards, and whether German-language workshops or English-only communication are expected.
MockK is useful when a dependency must be controlled or its interactions verified, but it is not the best choice for every test. A fake or in-memory implementation can offer more realistic behavior and less coupling when the dependency has straightforward, stable rules.
MockK tests should be readable, deterministic, focused on observable behavior, and stable in CI. Ask the specialist to explain mock scope, coroutine control, cleanup, failure cases, and why each mocked dependency could not be replaced by a simpler test boundary.
MockK specialists often resolve confusing verification failures, coroutine timing issues, incomplete cleanup, and tests that depend too heavily on implementation details. They can also guide teams away from overusing static or object mocks and toward clearer dependency design.
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.
Berlin Hamburg Munich Cologne Frankfurt Stuttgart Dusseldorf Leipzig Dortmund Essen Bremen Dresden Hanover Nuremberg Request a free demo
Get in touch with the FRATCH team and we will get back to you within 4 hours.
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Philipp Thomaschewski
FRATCH CEO
