Mission Overview:
We are seeking a Full Stack Developer for a consultancy mission at a client site, representing Keystone Solutions. The primary focus will be on the development of a new web application, 'Target 2', using Java and JavaScript, aimed at supporting the agents of the DGH, particularly hydrographers, as a replacement for the outdated 'Target 1' application.
Key Responsibilities:
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Develop interactions via web services with a business calculation engine written in Python.
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Implement interactions through a Datahup Denodo with external data stored outside the application.
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Facilitate interactions with a PostgreSQL database for application-specific stored data.
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Create a user-friendly, graphical, and secure interface.
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Develop a modern, secure, robust, and sustainable application that allows for the calculation, saving, updating, and visualization of the rating curves associated with the measurement stations of the Walloon hydrological network.
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Propose an intuitive, user-friendly, and well-documented interface to facilitate application usage.
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Ensure the application interfaces with existing databases and exchange channels within the DGH, necessary for its proper functioning.
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Establish sustainable maintenance of the tool, covering both back-end and front-end aspects.
Technical Environment:
Back-office Angular, API Spring Boot, PostgreSQL DB, Datahup Denodo, hosted by SPW Digital.
Soft Skills:
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Effective collaboration within an agile team.
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Autonomous.
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Pragmatic and results-oriented.
This position offers the opportunity to work on dynamic projects, providing a broad learning experience and professional development. As a consultant at Keystone Solutions, you will be part of a team that values ambition and growth, bringing our core values to every engagement.
If you are ready to tackle technical and strategic challenges in a dynamic consultancy environment, apply today .
Duration: 01/10/2026 - 14/06/2027 9 months • (full time)
Skills required:
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Architecture Logicielle
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(mandatory) - Level: T2 - Confirmed - Most recent: Any time
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Bases de données : expérience avec SQL, PostgreSQL
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(mandatory) - Level: T2 - Confirmed - Most recent: Any time
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Datahup Denodo - Level: T1 - Junior - Most recent: Any time
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Développement Back-End : Java & Spring Boot
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(mandatory) - Level: T2 - Confirmed - Most recent: Any time
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Développement Front-End : Angular, maîtrise de JavaScript, HTML5, CSS3, utilisation d’un design system
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(mandatory) - Level: T2 - Confirmed - Most recent: Any time
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DevSecOps : expérience avec les outils CI/CD (comme Jenkins, GitLab CI)
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(mandatory) - Level: T2 - Confirmed - Most recent: Any time
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Jira & Jira Xray - Level: T1 - Junior - Most recent: Any time
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Rédaction de documents techniques et fonctionnels
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(mandatory) - Level: T2 - Confirmed - Most recent: Any time
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Reprise de données d’une DB Oracle
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(mandatory) - Level: T2 - Confirmed - Most recent: Any time
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Scrum et Agile : expérience dans des projets Agiles et dans la méthode Scrum
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(mandatory) - Level: T2 - Confirmed - Most recent: Any time
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Sécurité des Applications : connaissance des meilleures pratiques de sécurité (OWASP)
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(mandatory) - Level: T2 - Confirmed - Most recent: Any time
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Web Services, REST API, RESTful API
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(mandatory) - Level: T2 - Confirmed - Most recent: Any time
Language requirements:
French
(mandatory)
Level Proficiency (C2)
