javascript English-speaking jobs in Haarlem

Develop and maintain statistical forecasting capabilities for global businesses, improving accuracy using advanced analytics. Own and refine forecasting models, drive data-driven decisions, and build new capabilities within the Demand Planning Center of Excellence.

Specialist advisor needed to guide global clients through employment transfers, covering TUPE and ARD equivalents. Lead compliance and transition planning across EMEA, APAC, and other regions. Requires experience with transfer-of-employment regulations.

Associate Technical Architect role designing, coding, testing, and deploying robust applications using Java, Spring Boot, and AWS. Requires strong skills in NoSQL databases, microservices, and backend development.

Business Analyst/Tester for a 9-month contract. Responsibilities include drawing up specifications, coordinating with suppliers, and testing output within the Plexus chain. Requires knowledge of pension products and requirements gathering experience.

Product Developer translates concepts into technical designs and optimizes products for manufacturability and cost efficiency. This role involves technical documentation, testing, and collaboration in an international environment.

Business Development Manager to expand the international market. Manage the entire sales cycle, from identifying opportunities to closing partnerships in a dynamic scale-up environment. Requires 2+ years in B2B sales and fluent English.

Lead on-site execution of multiple CAPEX projects, ensuring safe and quality delivery. Coordinate contractors, manage logistics, and collaborate with internal teams. Requires industrial CAPEX experience and fluency in Dutch and English.

Strategy Intern supporting the VP of Strategy and CEO on M&A, fundraising, and market expansion. Responsibilities include market research, financial analysis, and preparing executive materials. Requires strong analytical skills and English proficiency.

Oversee end-to-end payroll delivery across multiple European countries, ensuring accuracy and compliance. Lead a team of 4-6 payroll professionals while driving standardization and continuous improvement. Requires 7-10 years of multi-country payroll experience.

Business Lead to turn invention into scalable revenue and structure new business models. This role drives strategic growth, unlocks partnerships, and helps define the future of marketing at LeGarage.

Lead developer engagement and growth strategies for Roblox across Europe. Collaborate with developers and partners, representing Roblox at industry events. Requires 6+ years in technical project management and familiarity with game development engines.

Seeking a passionate Software Developer with 2+ years of commercial experience in enterprise software development. Must understand source control, software development practices, and REST services. This is a pipeline role for future openings.

Experienced operator needed for a smooth production process in a modern food production environment. Responsibilities include setting up production lines, monitoring quality, solving problems, and supervising workers.

Lead and grow the Netherlands Project Delivery and Construction business. Own P&L, drive revenue, and ensure safe, high-quality project delivery. Requires construction/real estate experience, P&L ownership, and fluency in Dutch and English.

Seeking a Team Leader/Site Manager for professional cleaning in the Netherlands. Responsibilities include client treatment, stock management, and quality control. Requires dynamic, proactive individuals with B2 level English, Dutch, or Spanish.

Deliver groceries in a dynamic team using electric bikes or scooters. Must be at least 16 years old, eligible to work in the Netherlands, and speak English or Dutch.

Analytics Insight Consultant supports FMCG manufacturers and retailers in delivering growth ambitions by analyzing sales, range, pricing, and promotional strategies.

Senior Automation Engineer needed for a pharmaceutical packaging facility. This hands-on role involves designing, maintaining, and optimizing PLC, HMI, and SCADA systems. Requires 7+ years in regulated manufacturing and strong packaging automation experience.

Area Manager for LPD (Livestock, Poultry & Dairy Diagnostics) in Benelux/Nordics. Responsible for Bovine, Swine & Poultry testing, managing accounts (labs, vets, government), and driving sales strategy.

Provide L1/L2 onsite IT support, troubleshooting hardware, software, network, and printing issues. Manage incidents and assets using ServiceNow, ensuring IT security and SLA compliance. Requires 4+ years of enterprise IT support experience.