Senior Full Stack Java Developer

Mission Overview

We are seeking a Senior Full Stack Java (Spring Boot) / Angular Developer for a consultancy mission at a client site representing Keystone Solutions. The project involves replacing an outdated business application with a new regulatory management application focused on complete traceability of files from origin to final decision. The current application data will be migrated to the new system.

Responsibilities

• Participate in backlog refinement and contribute to functional analysis.
• Design the data model and application architecture in collaboration with the architect.
• Develop back-end services, back-office screens, integration with the existing online portal, and interfaces with third-party systems.
• Address security requirements related to the application's external exposure.
• Implement tests and correct anomalies.
• Perform data migration.
• Deploy on the client’s environments.
• Document according to client standards.
• Participate in agile ceremonies.

Deliverables

• Tested application increments at each iteration.
• Versioned and documented source code.
• Up-to-date technical and functional documentation.
• Data migration scripts and reports.

Requirements

• 5+ years of experience in full stack development with Java (Spring Boot) and Angular.
• Strong understanding of agile methodologies.
• Experience with data migration and integration with third-party systems.
• Ability to communicate clearly in French with non-technical business users.
• Teamwork skills with analysts, Scrum Masters, and business stakeholders.
• Autonomy and sense of responsibility.
• Attention to detail and documentation rigor.
• Analytical and synthesis skills.

Keystone Solutions Advantages

As a consultant at Keystone Solutions, you will work on dynamic projects that offer a variety of challenges across different client environments. This role provides turbo-charged learning opportunities and a commitment to your career growth within our framework. Being a

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

Skills required

• Applications de gestion de dossiers réglementaires (workflows, historisation, traçabilité)Junior
• Bases de données relationnelles (Oracle, PLSQL) et langage SQLVerplichtErvaren
• Conception d'architecture applicative et de modèles de donnéesErvaren
• Développement back-end Java avec Spring Boot (services, API REST)VerplichtSenior
• Développement front-end AngularVerplichtErvaren
• Données géographiques et intégration cartographiqueJunior
• Intégration de services web (REST, SOAP) avec des systèmes tiersVerplichtErvaren
• Méthodes agiles (Scrum) et contribution à l'analyse fonctionnelleJunior
• Sécurité applicative (authentification, gestion des droits, exposition vers l'extérieur)Junior
• Tests automatisés (unitaires, intégration) et intégration continueErvaren

Language requirements

• Frans (mandatory)Proficiency (C2)