intern internship English-speaking jobs in Tubize

Accounting Associate provides bookkeeping and payroll services for international clients. Duties include recording financial transactions, reconciling accounts, preparing reports, and assisting with tax filings. Requires fluency in Dutch and English, a BS degree in a related field, and 3+ years of relevant experience.

Leads and coordinates security projects for building infrastructure, including CCTV, access control, and fire detection systems. Manages the full project lifecycle, from requirements definition to implementation and delivery.

The Key Account Manager provides day-to-day support to Strategic Accounts/Buying groups in Flanders, focusing on sales activities to achieve revenue, gross profit, and product mix targets. Responsibilities include developing and closing business with new and existing customers, presenting solutions to key decision makers, negotiating pricing, and training customers on product usage.

Technical Delivery Team Lead will lead customer projects, support solution design, and manage a small engineering team. Responsibilities include code review, project management, and team coaching. Experience in Java, Elasticsearch, Apache Kafka, and Kubernetes is required.

Reliability Test Engineer (Junior) will analyze unit requirements, functionalities, and potential failure modes to determine testing criteria. Responsibilities include executing validation tests, analyzing results, and collaborating with the product development team to define countermeasures.

Manage and optimize key retail accounts (off-trade) for a leading FMCG/beer portfolio. Execute joint business planning and analyze growth opportunities. Coordinate with internal and client stakeholders, requiring fluency in Dutch and French.

Drive the recruitment process for internship positions, act as HR Business Partner for interns, and contribute to HR initiatives. Support core HR functions and assist with payroll tasks.

Senior Test Engineer for a freelance project until September (potential extension). Full-time, hybrid role in the Mechelen region. Responsibilities include end-to-end testing, analyzing requirements, configuring test environments, and collaborating with teams. Requires 8+ years of testing experience, SQL knowledge, API experience, Java and scripting skills, and familiarity with Agile methodologies.

Project Manager to lead complex technical systems implementations, ensuring alignment with strategic objectives and regulatory requirements. Experience managing technically complex systems, preferably in aviation or safety-critical environments, is essential.

Senior IT Project Manager needed for a major, long-term roadmap delivering complex communication systems in a regulated environment. 5-10 years of experience managing technically complex projects, ideally in aviation, critical infrastructure, or a safety-regulated field. Must have deep technical understanding of Voice Technologies and Networking/IT Infrastructure. Fluency in English and either Dutch or French required.

Customer Account Relations Officer needed for a 6-month temporary assignment. Manage customer account openings and closures, handle administrative tasks, and communicate with stakeholders. Bachelor's degree in Law or Business Management required. Italian and English fluency mandatory.

Project Manager responsible for overseeing projects from definition to handover, ensuring HSE standards, defining scope, schedules, and costs. Requires engineering degree, mechanical focus, Dutch/English fluency, 5+ years experience in chemical/petrochemical/food industry, and proven management skills.

Experienced Transformation & Roadmap Manager to lead strategic initiatives, develop roadmaps, and drive change programmes across the organization.

Experienced .NET Solution Architect needed to define and guide the technical architecture of a growing application ecosystem used in safety-critical operational processes.

Project Officer to coordinate committee activities, manage EU-funded projects, and support policy and advocacy initiatives. Requires strong project management, communication, and analytical skills.

Business and Project Analyst to support the implementation of AI and automation within a TSO setting. Analyze business needs, define requirements, and coordinate cross-functional projects. Requires 9+ years of relevant experience, including AI implementation in a regulated environment.

IT Support Engineer provides on-site technical support for desktop computers, peripherals, software, and network equipment. Responsibilities include installation, configuration, maintenance, troubleshooting, and inventory management. Experience with Office 365, DHCP, DNS, and network troubleshooting is required.

Penetration Tester required for NATO military exercises and security assessments. Must have NATO SECRET clearance and 3+ years of experience in web, infrastructure, and network penetration testing, security design reviews, and vulnerability assessments. Strong scripting and reporting skills are essential.

The Outbound Officer ensures smooth administrative and operational coordination of outbound logistics activities. Responsibilities include order dispatch, transport compliance, carrier coordination, and supporting continuous improvement initiatives.

International Key Account Manager to manage and grow key accounts across Europe, collaborating with Customer Service and stakeholders on projects. Requires fluency in Dutch, French, and English, proven technical sales experience, and the ability to travel 30% in Western Europe.