Medior/Senior .NET Developer (WPF expertise)

Mission Overview:

Join Keystone Solutions as a consultant for a long-term mission at the client, contributing as a Functional and Technical Analyst / Full-Stack Developer within the client's Digital Solutions & Innovation department in Belgium, embedded in the Automation Logistics (LOG) application and project team. As a Keystone Solutions consultant, you will work on-site at the client location, delivering high-impact software used by production departments, with client-facing responsibilities and full participation in project lifecycles.

Consultancy at Keystone Solutions:

This opportunity is delivered under Keystone Solutions' consultancy model. You will operate as a Keystone Solutions consultant, working primarily on-site at the client, collaborating closely with their teams, processes, and stakeholders to deliver outcomes. After the initial period without remote work, the arrangement transitions (per client policy) to a hybrid model. Engagements are structured in six-month contract cycles, with continuity based on performance and project needs.

Key Responsibilities:

• Integrate into an application and project team within the client's Automation Logistics (LOG) group as a functional and technical analyst / full-stack developer.
• Develop and maintain the full suite of industrial logistics software used by various production departments.
• Contribute to the development of new projects and features in collaboration with client stakeholders.
• Build client applications using C# .NET with WPF for the client front-end layer.

Required Skills (Must-Have, Killing Criteria):

• .NET/C#
• WPF
• Fluent in French
• Living near Liège
• Budget: No budget provided; aligned to .NET market, as low as possible (ALAP)

Role Levels and Experience:

• Medior profile: minimum 3 years of experience.
• Senior profile: minimum 6 years of experience.

Technical Profile:

• Master's degree or equivalent experience.
• Minimum 6 years of experience in IT.
• Strong knowledge of object-oriented programming.
• Strong knowledge of C# .NET.
• Strong knowledge of WPF.

Assets:

• Experience developing software in an industrial environment.
• Experience with SQL Server.
• Ability to balance business challenges and technology constraints.

Social Profile:

• Communicative team player.
• Rigorous in implementation, documentation/comments, and software testing.
• Good command of French and able to hold a conversation in English (Dutch is a plus).
• Ability to commute to the client's site in the Liège area (including the Kessales site).
• No telework during the first six months; afterwards, up to 2 days per week.
• Start date: as soon as possible.
• Planned duration: for an extended period.

Engagement Details:

• Start: ASAP.
• End: Six-month renewable contracts.
• Work arrangement: On-site during the first six months; then up to 2 days/week remote.
• Language: French-speaking, based near Liège.
• Hard deadline: 10/07/2026.

Dynamic Projects as a Consultant:

As a Keystone Solutions consultant, you will tackle diverse challenges across industrial logistics software domains, gaining exposure to multiple projects and evolving priorities at the client. This variety enhances your technical depth in C# .NET and WPF while strengthening functional analysis and stakeholder collaboration.

Learning and Professional Development:

Working through Keystone Solutions provides broad on-the-job learning in modern .NET engineering within real-world industrial contexts. You will continuously refine your engineering best practices, documentation discipline, and testing rigor in line with project needs and client standards.

Career Growth within a Consultancy Framework:

Keystone Solutions supports your career trajectory through varied client engagements that expand your responsibilities and scope. By delivering measurable outcomes on client projects, you accelerate your progression as a trusted consultant in .NET/WPF industrial applications.

Keystone Solutions Values in Action:

As a K-Stone, you bring professionalism, collaboration, and delivery excellence to every client project. You embody quality in implementation, clarity in documentation, and reliability in testing—ensuring each engagement reflects Keystone Solutions' standards.

Location and Work Arrangement:

• On-site work in the Liège area at the client's facilities, with travel to the Kessales site when required.
• No remote work for the first six months; thereafter, up to 2 days per week remote per client policy.

How to Apply:

If you are ready to tackle technical and strategic challenges in a dynamic consultancy environment, apply today at Keystone Solutions Career Portal .