Medior Backend .NET Developer
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NET Developer for a consultancy mission at a client site representing Keystone Solutions. You will be hired by Keystone Solutions to work on diverse client projects, allowing you to tackle technical and strategic challenges in a dynamic consultancy environment.
Key Responsibilities
• Understand and interpret UML and BPMN models.
• Know, use, and manage SQL Server databases from version 2016 to 2025.
• Know, use, and manage an ORACLE database from version 19.
• Apply design patterns based on architect recommendations.
• Develop REST services using .
NET Framework and .
NET 8 and above.
• Develop interfaces in ASP.
NET WebForms / MVC, .
NET 4.5 and above.
• Develop in XML and JSON.
• Know and use W3C standards.
• Know and use WebAPI, WCF REST, WCF, and Web Services.
• Know and use Azure DevOps with GIT and TFVC.
• Practical knowledge of Redgate tools is a plus.
• Know and use Entity Framework Core. Additional Skills Desired:
• Ability to develop maintainable, high-performance code that adheres to team development standards.
• Experience in corrective and evolutionary maintenance of existing applications.
• Knowledge of SOLID principles and best practices in object-oriented development.
• Experience in writing and executing unit tests.
• Ability to diagnose and resolve technical incidents.
• Experience working in an Agile (Scrum) environment. Expected Qualities:
• Autonomy in carrying out assigned developments.
• Analytical and problem-solving mindset.
• Ability to collaborate effectively with analysts, architects, and other developers.
• Good communication skills and a sense of teamwork.
• Rigorous, proactive, and quality-oriented. Language Requirement: The service in which the person will be integrated is predominantly French-speaking. Therefore, it is essential that the candidate is fluent in French. If you are ready to tackle technical and strategic challenges in a dynamic consultancy environment, apply today at Keystone Solutions Career Portal. Duration: 01/10/2026
- 31/12/2026 3 months
• (full time) Skills required:
• .
Net
- Level: Confirmed
- Most recent: This year
• .
NET Core
- Level: Confirmed
- Most recent: This year
• Agile
- Level: Confirmed
- Most recent: Any time
• Azure DevOps
- Level: Confirmed
- Most recent: This year
• Entity Framework Core
- Level: Confirmed
- Most recent: Any time
• GIT
- Level: Confirmed
- Most recent: 1 to 3 years ago
• JSON
- Level: Confirmed
- Most recent: This year
• RESTful API
- Level: Confirmed
- Most recent: 1 to 3 years ago
• Scrum
- Level: Confirmed
- Most recent: This year
• Soap API
- Level: Nice to have
- Most recent: Any time
• SOLID
- Level: Confirmed
- Most recent: Any time
• Sprint
- Level: Confirmed
- Most recent: Any time
• UML
- Level: Nice to have
- Most recent: Any time
• Visual Studio
- Level: Confirmed
- Most recent: 1 to 3 years ago
• XML
- Level: Confirmed
- Most recent: Any time Language
requirements:
Dutch Level Passive knowledge English Level Passive knowledge French Level Native
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