1860 English-speaking jobs in Brussels

Designs, implements, and optimizes AI, NLP, and ML models using LLMs, RAG frameworks, and state-of-the-art architectures. Develops methods for tokenization, NER, classification, and clustering, including fine-tuning pre-trained models. Conducts research on AI/ML trends and collaborates with teams to embed AI solutions. Leads experimentation and A/B testing to improve model performance. Creates reports and visual insights to communicate findings.

Project Manager responsible for managing large, complex programs and projects throughout the full project lifecycle using waterfall and agile methodologies. Manages PMO activities, including project execution, schedule and milestone management, and RAID item tracking. Participates in forums for exception management, risk mitigation, and assumption analysis. Supports Osprey transition principles and assists in creating TSA agreements.

Experienced Project Manager (Mechanical Bias) to lead data center projects, focusing on data hall fit-out. Oversee MEP packages, manage budgets and timelines, and ensure compliance with safety regulations. Proven experience in data center construction, particularly fit-out and commissioning phases.

Senior Application Security expert to guide a Center of Excellence, lead tooling migrations (Invicti, Sonatype), and support secure development practices in a complex, international environment.

Machine Learning Engineer to design, build, and deploy scalable machine learning models for marketing initiatives. Requires Python proficiency, GCP experience, and BigQuery expertise.

Financial & Business Analyst needed for a fast-growing B2B services company in Brussels. Lead billing and collections, ensure system integrity, and collaborate with accounting firms. 2-6 years of experience in a similar role required. Fluency in English is essential, French and/or Dutch are a plus.

Provides operational support for the full lifecycle of medical grants, sponsorships, and external funding. Manages day-to-day activities including intake, review, contracting, payments, and close-out. Coordinates with internal and external stakeholders to ensure smooth processes and compliance.

Lead and stabilize IT operations in a complex, multi-vendor environment. Drive incident management, root-cause elimination, and IT operating model evolution. Manage external IT suppliers, ensure compliance with regulations, and support public procurement processes.

Build and deploy AI-powered features (LLMs, ML models) in production. Design robust backend systems and pipelines for AI workloads. Turn ambiguous use cases into working AI solutions with clear performance metrics.

Senior Data Architect needed to define data structure, build business information models, and improve data flows. Requires 5+ years of experience in data architecture, data modeling, and enterprise information management.

Lead Enterprise Architect needed to define and evolve architecture governance, lead the Architecture Review Board, and translate platform guardrails into actionable guidance.

Lead Java software engineer to modernize legacy systems, improve scalability and performance, and design APIs. Requires 10+ years of experience in Java (Spring ecosystem), distributed systems, and relational databases.

Cybersecurity professional with 10+ years experience leading enterprise security or risk programs in regulated environments. Proven ability to translate regulations into actionable security roadmaps and drive measurable risk reduction. Strong stakeholder engagement and execution skills.

IT Business Analyst to define and shape a new strategic domain focused on Network APIs and customer-facing functions. Translate technical concepts into functional requirements and collaborate with developers, architects, and customer experience teams to design and deliver key capabilities.

Design and develop cloud-native microservices using Java, Spring Boot, and Kafka. Implement event-driven integrations and apply Event Sourcing and CQRS.

Recent graduates will support the Public Affairs team at MedTech Europe, the European trade association for the medical technology sector. The intern will research EU policy developments, track events, and contribute to industry positions and communications.

Salesforce Technical Architect needed to design and lead complex Salesforce solutions. Requires fluency in English, French and/or Dutch, Salesforce Certified Technical Architect or equivalent certifications, and 8+ years of experience in Salesforce architecture and technical leadership.

Senior Backend Engineer to architect and develop server-side components and RESTful APIs for web applications using Python. Experience with Django, Flask, or FastAPI, databases, containerization (Docker, Kubernetes), and CI/CD pipelines is required.

Experienced Project Manager needed for major data center projects (~€20m). Lead projects from start to finish, manage budgets, subcontractors, and client relationships. Proven experience in data center construction and multi-package delivery required.

D'Ieteren Group seeks a master's student for a 6-month investment internship starting July 2026. The role involves conducting market research, analyzing investment opportunities, and supporting portfolio management.