Full Stack Web Developer Technical Lead

Mission Overview: Keystone Solutions is seeking a Full-Stack Web Developer / Technical Lead for a consultancy mission at a client site. This role requires a strong technical expertise with at least 8 years of experience in software development. As a consultant, you will provide technical leadership and actively contribute to the ongoing development of a long-term software project. Key Responsibilities: Define and maintain the technical architecture of software solutions, ensuring scalability, security, performance, and maintainability. Translate business requirements into robust technical designs and appropriate technology choices. Actively contribute to software development, particularly for complex or critical components. Ensure code quality and architectural consistency through code reviews, technical standards, and best practices. Provide technical guidance and support to developers, stimulate knowledge sharing and continuous improvement. Identify technical risks, dependencies, and technical debt, and drive appropriate solutions. Collaborate with the head of service and project managers to ensure successful project delivery. Actively participate as a member of project teams, contributing directly to the design, development, testing, and delivery of software solutions. Required Technical Skills: Object-oriented programming, design patterns, n-tiers architecture. Backend: C#, .NET Framework 4.0/4.5/4.8, .NET Core, .NET Core WebApi, Entity Framework. Front end: HTML, CSS, JavaScript, jQuery, SCSS/SASS, Nuxt.js, Node.js, VueJs. Database: MS SQL Server, TSQL. DevOps and containerization: MS Azure DevOps, Git, Docker, Kubernetes. Unit testing: NUnit, xUnit. IdentityServer, OpenId Connect and web applications security. Rest API services. Soft Skills and Personal Competencies: Technical leadership: ability to guide and advise colleagues. Communication: ability to explain technical concepts and standards. Collaboration: strong teamwork and ability to work effectively with developers, project managers, and designers. Accountable: proactive approach in risks identification, taking responsibilities. Continuous learning: willingness to learn new technologies and continuously improve technical skills. Knowledge sharing: ability to advise colleagues and share expertise. Languages: French or Dutch (read, written, spoken). English (read, written, spoken). At Keystone Solutions, we pride ourselves on our consultancy nature, offering dynamic projects that provide turbo-charged learning opportunities and a commitment to skyrocketing ambition. Being a If you are ready to tackle technical and strategic challenges in a dynamic consultancy environment, apply today at Keystone Solutions Career Portal. Duration: 14/12/2026 - 26/02/2027 3 months • (full time) Skills required: Azure DevOps - Level: Confirmed - Most recent: Any time Azure DevOps (GIT) - Level: Confirmed - Most recent: Any time C# / .NET (Core, 10) - Level: Confirmed - Most recent: Any time C#: ASP.NET Core (REST API) - Level: Confirmed - Most recent: Any time C#: ASP.NET MVC - Level: Confirmed - Most recent: Any time Docker - Level: Confirmed - Most recent: Any time identity Server - Level: Confirmed - Most recent: Any time jQuery/JS - Level: Confirmed - Most recent: Any time Kubernetes - Level: Confirmed - Most recent: Any time Nuxt - Level: Confirmed - Most recent: Any time OpenID-Connects - Level: Confirmed - Most recent: Any time VueJS - Level: Confirmed - Most recent: Any time Language requirements: French or Dutch (read, written, spoken) English (read, written, spoken) View more