Expert Test Engineer

Mission Overview:

Keystone Solutions is seeking an Expert Test Engineer for a consultancy mission at a client site. The client is a federal independent administration focused on providing protection to individuals at risk of persecution or serious harm upon return to their home country. This role is part of a modernization program aimed at enhancing their eDossier system, which involves a series of ambitious projects with tight timelines.

Key Responsibilities:

• Develop a test strategy considering the eDossier context (cloud, APIs, zero trust, microservices, etc.) and create an agile operational test plan (business and technical) to implement automated testing as much as possible.


• Conduct functional testing to validate business logic in microservices and APIs, ensuring data integrity and end\-to\-end user flow testing.


• Perform API testing, validating API contracts (openAPI) and testing for functionality, performance, security, and compatibility between microservices and external systems.


• Execute integration testing to assess interactions between microservices and COTS components, as well as with external APIs and adapters, simulating error scenarios to test system durability.


• Conduct security testing focusing on authentication, authorization, and encryption.


• Carry out performance and scalability testing of microservices and APIs, as well as the overall solution.


• Develop and maintain automated test suites in CI/CD pipelines to enable rapid feedback within DevOps processes.


• Set up monitoring and logging for the solution across various environments (dev, test, acc).

• Master's degree in Computer Science or a related field from a recognized institution within the European Union.


• Continuous self\-education to stay updated on the latest sustainable trends and innovations, focusing on cloud\-native engineering, development, and testing.


• 5\+ years of hands\-on experience testing cloud (native) solutions, preferably within Azure Cloud.


• 5\+ years of hands\-on experience with Test\-Driven Development (TDD).


• 5\+ years of hands\-on experience with monitoring and observability of software solutions, preferably using GRAFANA.


• 5\+ years of hands\-on experience with test automation.


• 3\+ years of hands\-on experience with Java SE and Java SE10\+.


• 3\+ years of hands\-on experience with Python and JavaScript.


• 3\+ years of hands\-on experience with Bash and/or PowerShell.


• 5\+ years of hands\-on experience with API test frameworks and tools, preferably BRUNO.


• 5\+ years of hands\-on experience with UI test frameworks and tools, preferably CYPRESS with a good knowledge of HTML DOM.


• 3\+ years of hands\-on experience with unit, regression, and integration testing, preferably JUNIT and CUCUMBER.


• 5\+ years of hands\-on experience with performance, stress, and load testing, preferably using JMETER and GATLING.


• 3\+ years of hands\-on experience with version control, pull requests, and code quality tools.


• 5\+ years of hands\-on experience with end\-to\-end testing.


• 3\+ years of hands\-on experience with security testing.


• 3\+ years of hands\-on experience with build tools, preferably MAVEN.


• 5\+ years of hands\-on experience integrating tests into CI/CD pipelines (preferably Azure DevOps).


• 5\+ years of hands\-on experience with contract testing, mocking, and service virtualization.


• 3\+ years of hands\-on experience using NoSQL databases.


• 5\+ years of experience working within agile delivery teams.


• Ability to propose alternative solutions and formulate recommendations considering the full context.


• Excellent listening skills, flexible attitude, and ability to communicate with both technical and non\-technical stakeholders.


• Experience in API design/definition and development is a plus.


• Experience in developing and integrating microservices is a plus.


• Experience in software design (cloud, API, microservice, event) is a plus.


• Experience with event\-driven architecture and systems is a plus.


• Knowledge of Event Driven and/or Behavioral Driven Development is a plus.


• Knowledge of Domain Driven Design is a plus.


• Familiarity with existing building blocks and services within the federal government context is a plus.

Due to the nature of the tasks and the client base (bilingual work environment), a very good command of English, as well as a very good command of Dutch or French, is necessary.

Why Join Keystone Solutions:

As a consultant at Keystone Solutions, you will work on dynamic projects that offer a variety of challenges across different client environments. You will have the opportunity for turbo\-charged learning and professional development, allowing you to grow your career within our framework. Being a 'K\-Stone' means bringing our core values to every engagement, ensuring a commitment to excellence and collaboration.

If you are ready to tackle technical and strategic challenges in a dynamic consultancy environment, apply today .

Duration: 14/09/2026 \- 31/08/2027 12 months • (full time)

Skills required:

• ervaring met (samen)werken binnen agile delivery teams \- Level: Confirmed \- Most recent: This year


• ervaring met API testframeworks en tools \- Level: Confirmed \- Most recent: This year


• ervaring met bash en/of powershell \- Level: Junior \- Most recent: 1 to 3 years ago


• ervaring met beveiligingstesten \- Level: Junior \- Most recent: 1 to 3 years ago


• ervaring met build tools \- Level: Junior \- Most recent: 1 to 3 years ago


• ervaring met contract testing, mocking en service virtualisatie \- Level: Confirmed \- Most recent: This year


• ervaring met E2E testen \- Level: Confirmed \- Most recent: This year


• ervaring met het gebruik van NoSQL databanken \- Level: Junior \- Most recent: 1 to 3 years ago


• ervaring met het integreren van tests in CI/CD pipelines \- Level: Confirmed \- Most recent: This year


• ervaring met java SE10\+ \- Level: Junior \- Most recent: 1 to 3 years ago


• ervaring met monitoring en observability van software oplossingen \- Level: Confirmed \- Most recent: 1 to 3 years ago


• ervaring met performantie\-, stress\- en loadtesten \- Level: Confirmed \- Most recent: This year


• ervaring met python en javascript \- Level: Junior \- Most recent: 1 to 3 years ago


• ervaring met TDD \- Level: Confirmed \- Most recent: This year


• ervaring met test automatisering \- Level: Confirmed \- Most recent: This year


• ervaring met testen van cloud (native) ontwikkelingen/oplossingen \- Level: Confirmed \- Most recent: This year


• ervaring met UI testframeworks en tools \- Level: Confirmed \- Most recent: This year


• ervaring met unit, regressie en integratie testen \- Level: Junior \- Most recent: 1 to 3 years ago


• ervaring met versiebeheer, pull requests en tools voor codekwaliteit \- Level: Junior \- Most recent: 1 to 3 years ago


• java SE ervaring \- Level: Junior \- Most recent: 1 to 3 years ago

Dutch or French

Level Active knowledge

English

Level Active knowledge

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