Medior/Senior .NET Developer (WPF expertise)

keystone-solutions; Luik; On-site; EUR 60,000 - 90,000; Full time

Job summary

Keystone Solutions seeks a seasoned consultant to join the client in Belgium as a Functional and Technical Analyst / Full-Stack Developer within the Digital Solutions & Innovation team.

On-site for the first six months, with potential hybrid remote up to two days weekly later; you will deliver industrial logistics software using C# .NET and WPF, and collaborate with stakeholders in French. The engagement features six-month renewable contracts and client-facing responsibilities.

Qualifications

• Master's degree or equivalent experience in IT or related field.
• Minimum 6 years of IT experience and strong OO programming.
• Proficient in C#/.NET and WPF, with industrial software exposure.
• Fluent French; English communication skills helpful.

Responsibilities

• Integrate into the client’s LOG team as functional/technical analyst and full-stack developer.
• Develop and maintain industrial logistics software used by production departments.
• Collaborate with stakeholders to design and deliver new features.
• Build client applications using C# .NET with WPF front-end.

Skills

.NET/C#

WPF

French (Fluent)

English (Conversational)

SQL Server

Liège area resident

Education

Master's degree or equivalent experience

Job description

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.

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.