controller English-speaking jobs in Rixensart

Intern will support training content development and configuration of training technology on space-related subjects.

Sales Manager EMEA South Zone is responsible for developing direct sales and distributor networks across Southern EMEA. The role involves managing the full sales cycle, defining forecasts, and analyzing market data. Requires a scientific/technical background, 3+ years of international B2B sales experience, and fluency in Arabic and English.

Enterprise Account Executive needed for a PE-backed B2B SaaS company selling finance technology to large organizations in EMEA. This full-cycle, land-and-expand role requires experience building pipeline, opening enterprise accounts, and selling value to CFO, finance, and treasury leadership. Proven track record of quota attainment and enterprise value selling is essential.

Senior Director of Manufacturing to lead large-scale mammalian cell culture operations (mAbs) across clinical and commercial programs. Responsible for end-to-end cGMP manufacturing, regulatory readiness, and operational performance. Requires experience in biologic drug substance manufacturing, leadership of large teams, and regulatory compliance.

Leads the development and implementation of organizational structures and frameworks to support business objectives. Partners with HR teams and business leaders to design efficient structures, optimize spans and layers, and ensure alignment with business priorities. Analyzes organizational data to identify optimization opportunities and provides insights to support evidence-based decisions.

Lead Python developer for a 24/7 application environment. Responsibilities include incident resolution, infrastructure administration, and developing/maintaining an algorithmic trading platform.

Part-time Drama Teacher (20%) to cover parental leave in Primary Years Programme (PYP). Must have a university degree in education, theatre, or related fields and experience planning and coordinating theatre productions with children. Fluency in English is required.

Senior Backend Engineer to build scalable software for digital entrepreneurs. Design, build, and maintain Ruby code, integrate AI capabilities, and collaborate with teams. Requires 4+ years of Ruby on Rails experience, object-oriented programming knowledge, and Git proficiency.

Freelance PHP Developer needed for a role in Brussels, Belgium. Develop and maintain applications using PHP frameworks like Laravel and Symfony. Build APIs, work with DevOps tools (Kubernetes, ArgoCD, Helm Charts), and ensure secure deployments. Collaborate with teams to deliver applications and provide ongoing support.

Storage Engineer needed for Agile Storage Squad. Expert management of HPE XP8 arrays and Brocade SAN switches. Full-stack troubleshooting, change & incident management, and performance optimization. Fluent in English and French/Dutch required.

Experienced Legal Engineer to support legal delivery team. Produce legal deliverables, structure workstreams, and use legal tech tools. Contribute to client projects and collaborate with product and delivery teams. Must have Master's degree in Belgian Law, fluency in English + Dutch or French, and 2-4 years of legal experience.

Lead and grow Havas Market Belgium, shaping performance and commerce strategies for a diverse client portfolio. Build deep partnerships with key Belgian retailers and marketplaces. Manage a team and leverage global expertise to deliver impactful results.

Freelance Industrial Technician providing on-site service, maintenance, and troubleshooting for industrial HVAC and cooling systems. Experience with chillers, heat pumps, and electrical/hydraulic systems required. Regular travel across Belgium and Luxembourg.

Provides day-to-day HR support to managers and employees, including onboarding, HR administration, leave management, and support for HR initiatives. Collaborates with Operations and HR teams to improve processes and support a positive work environment. Requires strong communication skills in Dutch and French, knowledge of Belgian labor law, and experience with HR systems.

Business Consultant for Manufacturing & Supply Chain projects. Experience in Operations Excellence, project management, and business process optimization required. Fluency in Dutch, French, and English.

Leads complex, high-value ($10M+) consulting and technology services deals from qualification through contract signature. Defines win strategy, competitive strategy, and close plan. Builds outcome-based business cases and translates client challenges into solution approaches. Manages cross-functional pursuit teams and drives alignment on contract terms.

Junior Treasurer will process bank movements, maintain financial records, execute transactions, and prepare cash flow forecasts. Requires a Bachelor's degree in a related field and 1-3 years of treasury or accounting experience.

Experienced SAP S/4HANA Solution Designer needed for a global transformation program. Translate business requirements into end-to-end solutions, ensuring alignment with a global template and enterprise architecture standards.

Senior Data Scientist to build and deploy decision models impacting commercial performance across digital and eCommerce channels. Focus on translating business problems into actionable insights and logic for internal tools. Requires 8+ years of experience in Data Science, strong Python and SQL skills, and experience deploying production-ready models. EU-based contractors only.

Remote Venture Capital Analyst needed for contract role. Evaluate VC projects, conduct TAM analysis, and source deal opportunities. Minimum 2 years of VC experience required.