Full Stack .NET Web Developer & Technical Lead

i4m; Brussel Hoofdstad; On-site; EUR 90,000 - 120,000; Full time

Job summary

i4m is seeking an experienced full-stack developer to take on a technical lead role within a long-term software development initiative. The role blends hands-on delivery with technical ownership, shaping architecture, guiding best practices, and contributing to complex software solutions.

The candidate will define scalable architectures, translate business needs into sound designs, and lead development across design, development, and delivery activities.

Qualifications

• 8+ years of software development experience.
• Proven full-stack developer with delivery track record.
• Strong leadership and mentoring abilities.
• Clear communicator able to translate technical concepts for stakeholders.

Responsibilities

• Define and maintain the technical architecture focusing on scalability, security, performance, and maintainability.
• Translate business needs into robust designs and sound technology choices.
• Contribute to development, especially on complex components.
• Safeguard code quality through reviews and standards.
• Support and guide developers and promote knowledge sharing.
• Identify technical risks and debt; drive resolutions.
• Collaborate with head of service and project managers for delivery.
• Participate in design, development, testing, and delivery activities.

Skills

OOP concepts

Design patterns

N-tier architecture

Technical leadership

Stakeholder communication

Tools

Azure DevOps

Git

Docker

Kubernetes

NUnit

xUnit

Job description

Function

Our client is seeking an experienced full-stack developer to take on a technical lead role within a long-term software development initiative. This opportunity combines hands-on delivery with technical ownership, offering the chance to shape architecture, guide best practices, and contribute directly to complex software solutions.

Responsibilities

• Define and maintain the technical architecture of software solutions, with a focus on scalability, security, performance, and maintainability.
• Translate business needs into robust technical designs and sound technology choices.
• Contribute actively to development work, especially on complex or critical components.
• Safeguard code quality and architectural consistency through code reviews, technical standards, and best practices.
• Support and guide developers, encouraging knowledge sharing and continuous improvement.
• Identify technical risks, dependencies, and technical debt, and drive appropriate resolutions.
• Collaborate closely with the head of service and project managers to support successful delivery.
• Take an active role in project teams across design, development, testing, and delivery activities.

Technical Skills

• Strong background in object-oriented programming, design patterns, and n-tier architecture.
• Backend experience with C#, .NET Framework 4.0/4.5/4.8, .NET Core, .NET Core WebAPI, and Entity Framework.
• Frontend experience with HTML, CSS, JavaScript, jQuery, SCSS/SASS, Nuxt.js, Node.js, and Vue.js.
• Database knowledge with MS SQL Server and T-SQL.
• Experience with DevOps and containerization tools such as Azure DevOps, Git, Docker, and Kubernetes.
• Unit testing experience with NUnit and xUnit.
• Knowledge of IdentityServer, OpenID Connect, and web application security.
• Experience building and integrating REST API services.

Profile

• At least 8 years of experience in software development.
• Confirmed experience as a full-stack developer.
• Strong technical leadership skills and the ability to advise colleagues effectively.
• Clear communicator who can explain technical concepts and standards to both technical and non-technical stakeholders.
• Strong team player with the ability to work effectively with developers, project managers, and designers.
• Proactive and accountable, with a strong focus on identifying and managing risks.
• Open to continuous learning and eager to keep technical skills up to date.
• Willing to share expertise and help elevate the team’s technical capabilities.

Practical Information

• Language requirements: French or Dutch, and English, all in reading, writing, and speaking.

Contactperson & Reference

• Reference #: INW28865
• Marilyn Weytens
• [e-mail]