Full Stack Developer

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:

• Develop interactions via web services with a business calculation engine written in Python.


• Implement interactions through a Datahup Denodo with external data stored outside the application.


• Facilitate interactions with a PostgreSQL database for application\-specific stored data.


• Create a user\-friendly, graphical, and secure interface.


• 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.


• Propose an intuitive, user\-friendly, and well\-documented interface to facilitate application usage.


• Ensure the application interfaces with existing databases and exchange channels within the DGH, necessary for its proper functioning.


• 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:

• Effective collaboration within an agile team.


• Autonomous.


• 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:

• Architecture Logicielle


• (mandatory) \- Level: T2 \- Confirmed \- Most recent: Any time


• Bases de données : expérience avec SQL, PostgreSQL


• (mandatory) \- Level: T2 \- Confirmed \- Most recent: Any time


• Datahup Denodo \- Level: T1 \- Junior \- Most recent: Any time


• Développement Back\-End : Java \& Spring Boot


• (mandatory) \- Level: T2 \- Confirmed \- Most recent: Any time


• Développement Front\-End : Angular, maîtrise de JavaScript, HTML5, CSS3, utilisation d’un design system


• (mandatory) \- Level: T2 \- Confirmed \- Most recent: Any time


• DevSecOps : expérience avec les outils CI/CD (comme Jenkins, GitLab CI)


• (mandatory) \- Level: T2 \- Confirmed \- Most recent: Any time


• Jira \& Jira Xray \- Level: T1 \- Junior \- Most recent: Any time


• Rédaction de documents techniques et fonctionnels


• (mandatory) \- Level: T2 \- Confirmed \- Most recent: Any time


• Reprise de données d’une DB Oracle


• (mandatory) \- Level: T2 \- Confirmed \- Most recent: Any time


• Scrum et Agile : expérience dans des projets Agiles et dans la méthode Scrum


• (mandatory) \- Level: T2 \- Confirmed \- Most recent: Any time


• Sécurité des Applications : connaissance des meilleures pratiques de sécurité (OWASP)


• (mandatory) \- Level: T2 \- Confirmed \- Most recent: Any time


• Web Services, REST API, RESTful API


• (mandatory) \- Level: T2 \- Confirmed \- Most recent: Any time

Language requirements:

French

(mandatory)

Level Proficiency (C2\)

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