Responsibilities

Drive development within our web .NET projects, delivering robust web components and APIs that power modern web applications.
Oversee the evaluation, improvement, and monitoring of frontend and backend performance, ensuring reliability, stability, and maintainability.
Collaborate closely with UI/UX, architecture, and integration teams to deliver smooth, real-time data flows across systems.
Translate technical requirements into clean, efficient, and scalable code, while helping define coding standards and best practices for the team.
Ensure high quality through automated testing, code reviews, and continuous integration practices. Support the team in building secure and maintainable solutions.
Stay ahead of the latest trends in .NET web and backend engineering, helping the team adopt new technologies, frameworks, and methodologies.
Share progress, highlight risks, and solve problems proactively. Mentor junior developers and cultivate a collaborative engineering culture.

Requirements

Minimum 5 years of hands-on experience in ASP.NET MVC C# /.NET web development.
Strong command of .NET 6+, .NET Core, ASP.NET MVC, Web API, and RESTful services.
Experience with relational databases (SQL Server, PostgreSQL) and ORM frameworks (EF Core).
Experience with CSS/SCSS, HTML 5.
Minimum 1 year of hands-on experience with typescripst / javascript / angular / react
Solid understanding of application architecture, design patterns, and modern development principles.
Knowledge regarding CI/CD pipelines and expertise using version control (Git).
Strong grasp of performance optimization and troubleshooting techniques.
Solid grounding in Agile methodologies and iterative delivery.
Ability to collaborate with cross-functional teams and contribute to a positive, learning-focused team culture.
Strong multitasking abilities and adaptability to dynamic work environments.
Excellent communication skills, capable of explaining complex topics clearly.
Proficiency in English is a must

Nice to Have

Experience with content management systems (CMS) is a strong plus. (e.g., Sitecore, Umbraco, Optimizely, EpiServer)
Dutch or French one is desirable.
Experience providing L2/L3 support in a production environment is a nice-to-have.
This role may require flexible availability outside of working hours at specific points in time (such as system go-lives).

Compensation

35 days of leave; a company car + a public transport season ticket; a target bonus; a comprehensive insurance package (affiliation without own contribution, excl. outpatient costs for family members); hospitalisation and dental care for the whole family; outpatient costs (= medical costs separate from hospitalisation); group insurance: supplementary pension, work disability and death (cafeteria plan); accidents at work (extralegal); meal vouchers and eco-vouchers; net allowances for remote working and carwash + internet budget.

Work Arrangement

Hybrid — Brussels-South station

Additional Information

Everyone is unique. That's why we believe it’s important that you can be yourself — it makes SNCB/NMBS stronger. We therefore place great value on diversity and inclusion.
This role may require flexible availability outside of working hours at specific points in time (such as system go-lives).
Proficiency in English is a must and Dutch or French one is desirable.