Senior Web Developer

About the Role

We are looking for a Senior Web Developer & AI Solutions Engineer to join a strategic project for the European Parliament, contributing to the design, development, and evolution of large-scale institutional digital platforms and AI-powered assistants.

You will be part of the Website Management Unit, playing a key role in building modern web solutions and AI assistants that support internal staff in accessing, understanding, and leveraging institutional knowledge more efficiently.

Key Responsibilities

Web Development & Digital Platforms

• Design, develop and maintain modern web applications and institutional websites.
• Implement multilingual content platforms and supporting systems.
• Develop scalable frontend and backend components using JavaScript, TypeScript, React and
• Integrate CMS platforms (Strapi, Jahia or similar).
• Model, test and deploy solutions into production environments.
• Ensure non-functional requirements: performance, scalability, security, maintainability, and quality.
• Propose modern and trending technical solutions aligned with business and technological needs.
• Perform corrective and evolutionary maintenance.
• Manage and coordinate technical workshops and project documentation.
• Provide knowledge transfer and technical guidance to development teams.
• Maintain close collaboration with editorial, design and conception teams.

AI Solutions & Generative AI Systems

• Design, configure and implement AI-powered assistants and generative AI solutions.
• Build retrieval pipelines, RAG architectures, prompt strategies and orchestration flows.
• Fine-tune and integrate LLMs (Large Language Models) via APIs or open-source models.
• Experiment with retrieval strategies, prompting techniques, and architectures to optimize quality and performance.
• Perform data pre-processing, cleansing, structuring and analysis.
• Evaluate AI system outputs and continuously refine performance.
• Ensure scalability, compliance, performance, and reliability of AI solutions.
• Contribute to data engineering pipelines supporting AI applications.
• Collaborate closely with business units, clients and IT teams.

Required Skills & Experience

Web Development

• Strong experience in modern web development with JavaScript / TypeScript, React, and
• Experience with frontend frameworks: React, , Astro or similar.
• Experience working with CMS platforms (Strapi, Jahia or similar).
• Solid knowledge of HTML, CSS, responsive design and component-based styling.
• Experience integrating REST APIs.
• Familiarity with build & packaging tools: NPM, webpack, Vite.
• Experience with CI/CD pipelines and version control: GitLab CI, Maven modules, Nexus.
• Basic knowledge of relational databases & SQL (PostgreSQL).
• Strong experience working in agile environments.

AI & Data Engineering

• Hands-on experience designing and implementing AI and Generative AI solutions.
• Strong knowledge of Retrieval-Augmented Generation (RAG) architectures.
• Experience working with LLMs (prompting, orchestration, fine-tuning, APIs, open models).
• Strong Python programming skills.
• Experience in data processing, data engineering and dataset preparation.
• Experience integrating AI solutions into cloud platforms (AWS, Azure).
• Knowledge of SQL, NoSQL, and data lakes.

Education & Experience

• Master Degree in Computer Science, Engineering, Artificial Intelligence, Data Science, or related field.
• Minimum 5+ years of professional experience in web development, enterprise platforms, and/or AI solutions.

Nice to Have

• Hands-on experience with Strapi CMS
• Experience designing content models and editorial workflows
• Knowledge of server-side rendering (SSR)
• Experience in multi-site or multi-tenant platforms
• Strong understanding of web security best practices
• Prior experience in institutional, public sector or large enterprise projects

Languages

• English: C1 (mandatory).
• French: B2 (nice to have).

Location

• Near-site (remote), within 2 hours of Brussels.