Mission Overview:
We are seeking a Senior Java Full Stack Developer for a consultancy mission at a client site, representing Keystone Solutions. In this role, you will develop, program, test, and maintain software applications to ensure they meet business needs and expectations.
Key Responsibilities:
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Participate in determining user needs and conduct feasibility analysis to understand requirements and assess technical feasibility for smooth application programming.
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Perform technical analysis and document changes and developments related to assigned applications to facilitate future modifications.
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Test solutions designed within the department and make necessary adjustments to ensure compliance with quality standards and business needs.
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Monitor production developments and make modifications as needed, contributing to the realization and improvement of assigned applications for an efficient development process.
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Control, analyze, and resolve intervention requests and bugs related to assigned applications to ensure optimal functionality.
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Act as a technical advisor for support and functional questions regarding software applications and management software, providing support for optimal use and development of various applications.
Requirements:
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Understand client requests and needs, critically analyze them (what, why, who, when, where, and how), and maintain a critical, analytical, and creative approach.
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Comprehend various database modeling concepts and object-oriented programming.
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Ability to work across the entire technical backend chain and the technologies used.
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Strong expertise in JAVA 8+ (Reactive Streams, performance, etc.) and associated frameworks (primarily Spring and Maven).
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Good knowledge of components such as Jenkins, JIRA, Git. Experience in implementing microservices and database queries (Oracle, SQL, and DB2) is a plus.
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Document applications for which you are responsible (e.g., user manuals, processes, etc.).
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Participate in the Agile way of life of the team (SCRUM Methodology).
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Develop and test new features or bug fixes in JAVA following existing patterns.
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Test your own work or that of a team member and support the business in data usage.
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Conduct technical analyses and challenge business analyses.
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Adhere to governance and IT strategy.
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Master's degree, Bachelor's degree, or equivalent experience.
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Minimum of 5 years of professional experience.
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Concrete experience in JAVA analysis and development (preferably Spring and Reactive Streams).
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Good knowledge of Git, Jenkins, and JIRA components.
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Good knowledge of databases (Oracle, SQL, DB2, etc.).
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Familiarity with IDEs like IntelliJ or similar.
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Good frontend experience with the latest versions of Angular (React is a plus).
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Comfortable with concepts such as ngrx, openid connect, HTML, CSS, TypeScript, and SASS.
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Knowledge of Json Form is also an asset.
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Good knowledge of French or Dutch (oral/written) and knowledge of English (oral/written).
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Oral comprehension of French is an asset (French-speaking team).
Desired Qualities:
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Synthesis skills and good organizational sense.
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Proactive in work and seeking new solutions.
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Autonomous.
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Rigorous.
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Good communication skills.
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Listening skills.
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Self-taught.
At Keystone Solutions, we pride ourselves on our consultancy nature, offering dynamic projects that provide turbo-charged learning opportunities and a commitment to skyrocketing ambition. Being a
If you are ready to tackle technical and strategic challenges in a dynamic consultancy environment, apply today .
Duration: 01/08/2026 - 31/12/2026 5 months • (full time)
Skills required:
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Agile - Level: Intermediate - Most recent: Any time
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Angular - Level: Expert - Most recent: Any time
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Java - Level: Expert - Most recent: Any time
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Jira - Level: Intermediate - Most recent: Any time
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Microservices - Level: Advanced - Most recent: Any time
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React - Level: Expert - Most recent: Any time
Language requirements:
Dutch or French
Level Native or bilingual proficiency
English
Level Professional working proficiency
