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 country of origin. This role is part of a modernization program aimed at enhancing their eDossier system.

Key Responsibilities

• Develop and implement a test strategy considering the eDossier context (cloud, APIs, zero trust, microservices, etc.).
• Create an agile operational test plan (business and technical) and implement it as automated as possible.
• Conduct functional testing, validating business logic in microservices and APIs, ensuring data integrity and E2E testing of user flows.
• Perform API testing, validating API contracts (openAPI) and testing for functionality, performance, security, and compatibility.
• Execute integration testing, 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.
• Develop and maintain automated test suites in CI/CD pipelines for rapid feedback in DevOps processes.
• Set up monitoring and logging for the solution across environments (dev, test, acc).

Requirements

• Master's degree in Computer Science or equivalent.
• Continuous self-education on sustainable trends and innovations, focusing on cloud-native engineering, development, and testing.
• Hands-on experience in monitoring and observability of software solutions, preferably GRAFANA (5 years).
• Hands-on experience in test automation implementation (5 years).
• Programming experience with Java SE10+ (3 years).
• Experience with scripting languages (Python, JavaScript) (5 years).
• Experience in setting up and executing API test frameworks and tools, preferably BRUNO (5 years).
• Experience in setting up and executing UI test frameworks and tools, preferably CYPRESS (5 years).
• Experience in regression and integration testing, preferably JUNIT and CUCUMBER (5 years).
• Experience in performance, stress, and load testing, preferably via JMETER and GATLING (5 years).
• Experience in E2E testing (5 years).
• Experience with build tools, preferably MAVEN (5 years).
• Experience in CI/CD pipeline implementation and integrating tests (preferably Azure DevOps) (5 years).
• Experience in contract testing, mocking, and service virtualization (5 years).
• Experience with SQL databases (3 years).
• Experience working within agile delivery teams (5 years).
• Ability to propose alternative solutions and recommendations considering the full context.
• Excellent communication skills with both technical and non-technical stakeholders.
• Experience in API design and development is a plus.
• Experience in microservices development and integration is a plus.
• Knowledge of event-driven architecture and systems is a plus.
• Familiarity with Domain Driven Design is a plus.

Language Requirements

Fluency in English and a good command of either Dutch or French is necessary due to the bilingual work environment.

Why Join Keystone Solutions

As a consultant at Keystone Solutions, you will engage in dynamic projects that offer diverse challenges across various client environments. You will benefit from turbo-charged learning opportunities and a commitment to your career growth. Being a 'K-Stone' means bringing our core values to every engagement, ensuring a collaborative and innovative work atmosphere.

Duration: 01/12/2026 - 30/11/2027 12 months • (full time)

Skills required

• ervaring gebruik SQL databanken binnen testenJunior · used this year
• ervaring met (samen)werken binnen agile delivery teamsConfirmed · used this year
• ervaring met API testframeworks en toolsConfirmed · used this year
• ervaring met build toolsConfirmed · last used 1 to 3 years ago
• ervaring met contract testing, mocking en service virtualisatieConfirmed · used this year
• ervaring met E2E testenConfirmed · used this year
• ervaring met het integreren van tests in CI/CD pipelinesConfirmed · used this year
• ervaring met java SE10+Junior · used this year
• ervaring met monitoring en observability van software oplossingenConfirmed · last used 1 to 3 years ago
• ervaring met performantie-, stress- en loadtestenConfirmed · used this year
• ervaring met python en javascriptConfirmed · last used 1 to 3 years ago
• ervaring met regressie en integratie testenConfirmed · last used 1 to 3 years ago
• ervaring met test automatiseringConfirmed · used this year
• ervaring met UI testframeworks en toolsConfirmed · used this year

Language requirements

• Dutch / FrenchActive knowledge
• EnglishActive knowledge