NET C# developer (REF2679)

As a Keystone Solutions consultant, you will join a consultancy mission to support our client in the mobility sector. The client is a key player in mobility offering more than 1000 parking lots across 9 European countries and is transforming to become a more digitally oriented player. You will contribute as a C#/.NET Developer within agile development teams, performing the responsibilities below under Keystone Solutions' consultancy model while working closely with the client., * You develop, extend, maintain and monitor applications within the domain.

• You automate testing in all its forms in order to increase both code quality and application reliability, i.e., Unit-testing, integration testing, end-to-end testing, etc.
• You write maintainable documentation for both existing software and new developments.
• You collaborate with domain experts and business analysts in extracting requirements from user and business requests.
• You participate in design discussions (high- and low-level) regarding application transformations as well as greenfield development.
• You start initiatives to improve development processes, testing, operational management and infrastructure.
• You try to reduce the amount of existing manual operational tasks as much as possible through automation.
• You help set up inter-team communication channels for coordination regarding API changes, deployments, bugs, etc.

All the above responsibilities will be performed as a Keystone Solutions consultant, working closely with the client's teams and stakeholders., * Home working: 2 days/week - On site 3 days/week (mandatory) at the client site as part of the consultancy mission.

Dynamic Projects:

As a Keystone Solutions consultant, you will have the opportunity to contribute to client initiatives that span application development, testing automation, and distributed systems-enhancing your exposure to diverse technical challenges within the client's environment.

Turbo-Charged Learning and Development:

Working through Keystone Solutions enables broad learning experiences across modern .NET practices and adjacent technologies present in the client context, supporting continuous professional growth through hands-on, real-world engagements.

Ambition Skyrocketing within a Consultancy Framework:

Keystone Solutions fosters career growth by enabling consultants to tackle impactful client problems, drive improvements, and refine their craft across a variety of project scopes, from greenfield development to application transformations.

Keystone Solutions Values in Action:

Being a K-Stone means bringing customer centricity, solution-minded thinking, professionalism, and collaboration to every client interaction-ensuring high-quality delivery and lasting impact on each engagement.

• You have at least 3 years of practical experience in C#.Net development
• You have detailed knowledge of the .NET framework and surrounding ecosystem.
• You have a strong foundation in OOP, in particular regarding C#.
• You are acquinted with modern software design principles - i.e. SOLID, Gang of Four, event-driven systems, etc.
• You have experience with ASP.NET WebApi and ASP.NET MVC.
• You have experience with relational databases, preferably SQL server.
• You have experience with CI pipelines, in particular Azure DevOps.
• You are familiar with distributed system design and messaging technology.
• Experience with .NET 10 is a plus.
• Experience with NServiceBus is a plus.
• Experience with Azure cloud platform is a plus
• • i.e. App Services, Application Insights, Azure Key Vault, Azure Functions, ServicesBus, etc.
• Experience with Docker is a plus.
• Experience with React is a plus
• Experience with Kubernetes is a plus

Education & Soft-Skills:

• You have a Bachelor's degree - Computer Science, MIS or equivalent
• You are fluent in both spoken and written English.
• French speaking is a plus
• You can work independently but are also a team player.
• You are conscientious and act professional.
• You are motivated and have a positive mindset.
• You do not shy away from asking difficult questions.
• You are Customer centric
• You are Solutions Minded
• You have abilities to learn quickly
• You are organized
• You have verbal and written communication skills
• You have real-world experience with Agile development methodologies such as Scrum