javascript English-speaking jobs in Wavre

Lead backend and data engineering activities for trading applications. Provide technical direction, mentor developers, and ensure secure, high-performance applications.

Experienced Construction Site Operations Manager needed for large-scale industrial project. Oversee site layout, logistics, and coordination of 2,000+ workers, multiple contractors, and suppliers. Minimum 10 years site-based experience in industrial projects or proven Construction Management background with complex site coordination expertise. Fluent English required.

Experienced Commissioning Manager needed for electrical commissioning of a new hyperscale data center. Lead L1-L5 electrical commissioning across HV/LV infrastructure, including transformers, switchgear, distribution, UPS, and associated systems.

Freelance Business Development Manager to drive growth in cloud and data center solutions, including sovereign cloud, managed hosting, and infrastructure modernization. Focus on acquiring new customers and expanding existing accounts in the mid-market and enterprise segments.

Procurement Specialist to drive supplier selection, negotiation, and management across operational areas. Lead procurement processes, including purchase order creation, invoice approvals, and change control. Identify, assess, and maintain supplier relationships while ensuring adherence to quality and performance standards. Analyze performance data and recommend process improvements.

Service & start-up engineer for HVAC automation, providing after-sales service, preventive maintenance, and troubleshooting. Collaborates with internal teams, customers, and project managers. Requires expertise in HVAC commissioning and control, low voltage domain, and IT domains.

Leads EMEA marketing, communications, and commercial support for sustainability initiatives. Develops and executes campaigns, content, and messaging aligned with corporate priorities. Supports customer-facing teams with sustainability materials and training. Ensures alignment with the global Corporate Sustainability Framework.

This leadership role combines scientific expertise with operational responsibility. The CTO will lead the technical organization end-to-end, including materials R&D, testing, validation, industrialization, and technical partnerships. The CTO will translate the material platform into qualified, approved, and market-ready products, starting with bike tyre manufacturers and distributors.

Junior KYC Analyst supports organizational compliance with Know Your Customer (KYC) regulations. Responsibilities include conducting due diligence on clients, reviewing documentation, assessing risks, and escalating concerns. Requires 1-3 years of experience in KYC, AML, Compliance, or Customer Due Diligence, strong analytical skills, and knowledge of AML regulatory requirements.

Experienced IT Domain Architect needed for freelance projects. Responsibilities include developing security project plans, managing security teams, and ensuring security solutions comply with standards. Must have experience in architecture leadership, agile methodologies, solution design, technology strategy, security and compliance, cloud and infrastructure architecture, data architecture, DevOps, and stakeholder collaboration. Strong communication and presentation skills are required. Bachelor's or Master's degree in Computer Science or equivalent experience is necessary.

Key Account Manager to define and execute customer strategies, manage a portfolio of key accounts, and drive profitable deals. Requires a Master's degree in economics, 5+ years of relevant sales or trade marketing experience, and fluency in Dutch, English, and French.

Senior Software Engineer will design and build high-performance backend components in Java (11+) for a transaction observability platform. Responsibilities include real-time ingestion and indexing of transaction data, advanced search capabilities, performance optimization, and technical design discussions.

Data-warehouse & reporting developer needed. Design data quality and health monitoring processes. Write technical documentation and assist with system deployment and configuration. Expertise in data governance, data management, data warehouse design, SQL, PostgreSQL, NoSQL, ETL tools, and OLAP/data mining tools required. Minimum 5 years of experience.

Performance Attribution Specialist to support BAU activities and reporting transformation initiatives. Responsibilities include ensuring timely production of performance attribution reports, monitoring portfolio performance, and identifying performance discrepancies.

The Key Account Manager drives revenue growth and profitability for key accounts by managing existing relationships and generating new business opportunities with airlines and logistics partners.

Clinical Research Associate I or II needed for a full-scope role covering study lifecycle activities. Responsibilities include contract negotiation, site start-up, monitoring, and close-out visits. Requires previous CRA experience, independent monitoring experience, and fluency in Dutch, French, and English.

Business consultant supporting insurance companies in operational excellence by transforming operating models, designing processes, and developing technology strategies.

This hybrid role combines on-site instrument installation and troubleshooting with application support. You will work with automated analysers in clinical laboratories, ensuring fast and reliable patient results.

IT Infrastructure Systems Engineer needed to manage, optimize, and troubleshoot Windows & Azure environments. Responsibilities include system maintenance, automation, and 3rd line support. Requires 3+ years of experience in Windows & Azure, strong troubleshooting skills, and fluency in French or Dutch.

Data Product Owner needed to bridge business and IT, prioritizing data requirements and ensuring data governance principles are applied.