Full Stack .NET Web Developer & Technical Lead

In4Matic; Brussel Hoofdstad; On-site; EUR 90,000 - 120,000; Full time

Job summary

In4Matic is seeking an experienced full-stack developer to assume a technical lead role within a long-term software development initiative. This position blends hands-on delivery with architectural ownership, shaping architecture, guiding best practices, and contributing directly to complex software solutions.

The ideal candidate has at least eight years of software development experience, proven leadership, and strong backend C#/.NET plus frontend JavaScript expertise.

Qualifications

• At least 8 years of software development experience.
• Proven track record as a full-stack developer and technical lead.
• Strong communication skills for technical and non-technical stakeholders.
• Ability to translate business needs into robust technical designs.
• Experience with architecture definition and code reviews.

Responsibilities

• Define and maintain the technical architecture with focus on scalability, security, performance.
• Translate business needs into robust technical designs and technology choices.
• Contribute to development, especially on complex components.
• Ensure code quality and architectural consistency via reviews and standards.
• Support and mentor developers; drive knowledge sharing.
• Identify risks, dependencies and technical debt and drive resolutions.
• Collaborate with head of service and project managers to support delivery.
• Take an active role across design, development, testing and delivery.

Skills

C#

NET Framework

NET Core

WebAPI

Entity Framework

SQL Server

REST APIs

Docker

Kubernetes

Azure DevOps

Git

Unit testing

IdentityServer

OpenID Connect

Security

HTML/CSS

JavaScript

Vue.js

Nuxt.js

Node.js

SCSS/SASS

SQL/T-SQL

Tools

Azure DevOps

Git

Job description

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]