ruby English-speaking jobs in Belgian Luxembourg

Quantitative Developer will build and improve Rust-based HFT trading algorithms, create front-office systems, and integrate with DeFi market data. Requires strong Rust skills, experience building trading systems, and understanding of order books, state machines, and trading flows.

The Head of Finance will lead and execute the organization's financial strategy, ensuring long-term sustainability and operational excellence. This role advises the President, Board of Directors, and Finance Committee, oversees all financial operations across multiple global entities, and supervises accounting, budgeting, reporting, and financial planning processes.

Security Engineer responsible for monitoring, maintaining, and improving enterprise security solutions with a focus on Microsoft Security. The role involves managing Microsoft Security components, contributing to IAM initiatives, and ensuring operational follow-up of security configurations.

Quality Inspector – Tobacco Leaf ensures 100% of tobacco inputs comply with PMI quality standards. Conducts independent inspections, validates materials against standards, and approves or rejects inputs. Maintains accurate records and collaborates with stakeholders. Requires experience in quality inspection, SOPs, and compliance standards.

Financial Controller to manage financial reporting, accounting operations, and treasury activities for a pan-European renewable energy developer.

This role focuses on turning customer data into actionable insights for impactful campaigns. The Audience & Segmentation Specialist will build and maintain customer segments, activate first-party data, and contribute to customer journey development.

NIIT is seeking a Full-time Training Consultant to deliver face-to-face and virtual training on Industrial Automation products. Responsibilities include developing and delivering training materials, contributing to content development, and conducting Train-The-Trainer sessions. Requires 7+ years of experience in automation, strong technical writing skills, and proficiency in Rockwell Automation PLC products.

Freelance Business Analyst to support finance industry clients on transformation, regulatory, and digital initiatives. Analyze processes, define requirements, and support delivery of compliant solutions.

Problem & Change Analyst (PCA) for Message Exchange (MEX) domains within CMS applications. Requires 3+ years of functional analysis experience, SQL, and ITIL. Experience with incident management tools, Azure DevOps, and BPMN is preferred. Fluency in Dutch or French and English (C1 level) is required.

Experienced Construction Managers sought for large-scale projects in Buildings, Civil Works, or Marine Works. Manage and plan construction works on site, coordinate logistics, materials, and personnel. Report to the Project Director and lead site superintendent teams.

T&E seeks an Energy & Climate Director to lead the organization's political strategy on energy transition and the EU's climate framework. The Director will lead a team, oversee policy development, and manage fundraising. Requires 5-10 years of experience in energy and climate-related teams, strong leadership skills, and a network within the European energy and climate policy communities.

Experienced Salesforce Consultant needed for Marketing Cloud implementation and operations. Configure and maintain Marketing Cloud environments, create campaigns, and manage data flows. Strong understanding of multi-channel marketing automation and governance required. Marketing Cloud Email Specialist certification minimum.

Provides clinical and technical expertise for Zimmer Biomet products in the Limburg region. Supports hospitals with product training, surgical procedures, and account development.

Expert AI & Cloud Platform Architect needed to design, implement, and optimize secure, scalable solutions for AI and machine learning workloads.

Senior Database Developer designs, develops, and optimizes data pipelines for applications and external interfaces. Sets up, maintains, and improves relational and NoSQL databases. Creates data models, migration scripts, and integrates with C#/.NET and Entity Framework. Collaborates with teams to ensure deployable and maintainable solutions.

The IT Product Owner Commercial shapes, prioritizes, and delivers digital solutions that support commercial growth and customer experience. This role acts as a bridge between Sales, Marketing, Customer Service, and IT, ensuring commercial needs are translated into end-to-end solutions. Responsibilities include owning the commercial product backlog, translating needs into solutions, and collaborating with teams to ensure timely delivery.

Lead .NET Developer to design and develop Web APIs in .NET Core. Experience with Azure services (Service Bus, Logic Apps, API Management, Functions, Key Vault, Cosmos DB) and integration patterns is required. Technical leadership and code review experience are essential.

Application Architect needed for a 6-month near-site engagement in Brussels. Will propose and document architecture for the future Talent Pool, ensuring alignment with business needs and existing components. Requires 10+ years Java development experience, 5+ years UML modeling, and 5+ years knowledge of EC corporate components.

Junior Events & Communication Marketer will coordinate and execute events, activations, and trade show presence. Responsibilities include managing on-site logistics, developing press releases, building media relationships, and creating content for social media and campaigns.

Lead AI Engineer to design, develop, and deploy production-grade AI systems and cloud services. Requires a Master's degree and experience with machine learning, cloud platforms, and Python.