qa English-speaking jobs in Leidschendam

Leads the deployment of specialized flight operations Task Forces, providing oversight and coordination for customers in areas such as aircraft performance, human factors, safety management systems, and training standardization.

Senior Backend Developer to own and evolve a Node.js based microservice architecture. Design, build, and integrate APIs while collaborating with a team to develop safety-focused features for the construction industry. Requires 3+ years experience with Node.js and MariaDB/MySQL at scale, service-oriented system design, and a security-first mindset.

IT Technical Project Manager needed for complex migrations and technology integrations. Lead end-to-end execution of migrations to Microsoft Azure Stack, manage vendor relationships, and ensure business continuity. Strong communication, technical understanding, and project management skills required.

Senior Machine Learning Engineer to design, build, and operate production-grade forecasting models. Full ML lifecycle ownership, including data ingestion, feature engineering, deployment, and monitoring. Architect scalable ML infrastructure and partner with product, engineering, and customers. 6+ years experience building and deploying forecasting models required. Strong foundations in software engineering and ML engineering best practices. Experience with time-series modeling, feature engineering for temporal data, and uncertainty estimation. Hands-on experience with explainability and stakeholder-facing model communication. Strong Python skills and experience with tools such as scikit-learn, Prophet, TensorFlow/Keras, XGBoost, LightGBM, Spark, SQL, and Airflow. Cloud experience (Azure preferred).

Cloud Engineer to optimize global ERP systems, design cloud solutions, and communicate with cross-functional teams. Requires OCI certification and networking background.

Service Performance Manager will oversee performance and delivery of key service contracts within the CREFS NL domain. Responsibilities include monitoring KPIs, steering service outcomes, translating strategic ambitions into actionable service improvements, and mitigating risks. The role requires expertise in real estate and facilities services, supplier performance frameworks, and integrated contract management.

Inventory Control Clerk needed for a fast-paced warehouse environment. Responsibilities include conducting inventory audits, collaborating with stakeholders to improve processes, managing GWP stock, and resolving stock discrepancies. Requires 3+ years of inventory control experience, proficiency in English, and experience with a Warehouse Management System (preferred).

AI Engineer specializing in generative and agentic AI systems for on-device deployment. Optimize LLMs and multimodal models for NPU hardware, translate research into production-ready solutions, and build PoCs for applications like safety monitoring and in-cabin sensing.

Senior Account Executive to drive new business for Microsoft solutions (Azure, M365, Security) within mid-market and enterprise environments. 5+ years of enterprise IT/SaaS sales experience and a proven track record in new business acquisition required.

Java Backend Developer will design, develop, and maintain scalable backend applications using Java (17) and Spring Boot. Responsibilities include building microservices, RESTful APIs, and CI/CD pipelines. Requires 6-8 years of experience in backend development, strong understanding of microservices architecture, and experience with relational and NoSQL databases.

Pearl Abyss seeks a Marketing Graphic Designer to create innovative marketing assets for PC, mobile, and console platforms. The role involves collaborating with publishing and development teams to deliver impactful creative materials tailored to European audiences.

Senior Software Engineer to design, build, and maintain robust APIs on Azure. Requires 10+ years of development experience, expertise in C#, and a strong understanding of API best practices. Will mentor team members, promote engineering best practices, and leverage AI to improve development processes.

Sales Manager to build pipeline and fuel expansion for Nuvei for Platforms in Europe. Qualify leads, support outbound campaigns, and collaborate with marketing and product teams. Fluent English + one European language (German or French preferred). 2+ years sales, business development, or customer success experience.

Digital Sales Intern will gain hands-on experience in Product Data Management, Sales Analytics, Digital Visual Merchandising, and Partnership Marketing & Gift Card. Support weekly reporting, analyze sales data, and execute digital visual merchandising strategies.

Experienced Client Development Manager to lead client relationships, drive growth, and enhance the boutique experience in Amsterdam. Minimum 5 years of luxury brand experience with strong clienteling expertise required.

Experienced software engineer needed to build and maintain mission-critical trading systems. Responsibilities include developing trade reconciliation, financial reporting, and security systems. Must have experience with high-volume data processing and a strong understanding of financial data integrity.

Senior Software Engineer, Web will design, implement, and maintain web software functionality. Responsibilities include creating customer documentation, acting as project manager, and implementing automated unit tests. Strong Python, Linux, JavaScript, HTML/CSS, and Django knowledge is required.

Lead and develop two engineering teams in a fast-paced proprietary trading environment. Own technical direction, people development, and architectural leadership. Contribute to system performance, risk management, and market data processing. Drive the adoption of Rust and FPGA implementation.

The Netherlands Cancer Institute seeks a researcher to execute pharmacological and pharmacokinetic studies in mouse and rat models. Responsibilities include designing and executing studies, contributing to bioanalytical method development, and assisting with tissue culture and analysis. The position offers growth opportunities towards coordinating pharmacology activities within the MCCA.

Manage project sales, develop customized solutions, and coordinate design, engineering, and sales teams. Provide technical consulting, manage sales from initiation to completion, and build client relationships.