qa English-speaking jobs in Leidschendam

Develop state-of-the-art AI products by improving training algorithms, integrating multimodal LLMs, and designing new model architectures. Train and design more accurate models for low-cost, low-power hardware. Improve data pipelines, model architectures, and training software.

Resident Engineer needed to support the build, startup, and maintenance of a new automated warehouse for Quooker in Ridderkerk. This role involves providing electro-mechanical preventive and corrective maintenance on automated material handling systems, diagnosing and resolving faults, and ensuring safe and efficient operations.

Senior Electrical Engineer needed for Amsterdam-based role. Manage electrical design, construction drawings, and technical guidance to subcontractors. 5+ years experience in mechanical and electrical contracting required. Bachelor's degree in engineering essential.

Experienced SAP SuccessFactors Employee Central (EC) Consultant needed for an 8-month contract. Lead and execute EC implementations, perform configuration, and support UAT. Must have strong hands-on EC experience, fluency in Dutch, and be comfortable working independently.

Provides general support to the Operations Team in a Bioanalytical Science laboratory. Responsibilities include managing materials and chemicals, handling samples, coordinating shipments, and performing tasks according to SOPs and regulatory guidelines. Requires a completed HLO education or equivalent and relevant experience in a regulated environment.

Experienced SAP TM Architect needed for a retail client in the Netherlands. Design inbound transportation flows within SAP TM, provide functional expertise, and guide the team in implementing TM functionalities.

Senior Supply Chain Specialist coordinates logistics, collaborates with carriers, suppliers, and customers, and optimizes supply chain processes. Responsibilities include coordinating orders and transports, ensuring alignment between sales, inventory, and purchasing forecasts, and identifying process improvements. Requires a bachelor's degree in a relevant field and at least 4 years of experience in logistics and/or supply chain.

We are seeking ambitious entrepreneurs to build and scale AI startups. You will own your startup, receive personalized development support, and access a network of top founders, investors, and talent.

Area Sales Manager to drive sales and build customer relationships in the Dutch land market. Requires 4+ years of B2B sales experience, preferably in fire & safety, building automation, or electrical wholesale. Must have a strong network in the electrical and construction sectors in the Netherlands and fluency in Dutch.

Freelance Partner to sell and deliver strategy consulting projects in energy, mobility, circular economy, construction, and decarbonization. Build your own client pipeline and participate in a cohort of Freelance Partners. Minimum 4 years in strategy consulting or related field with proven sales and team building abilities.

Experienced Customer Services Advisor needed to respond to merchant inquiries via Zendesk. You will own merchant communication from initial contact through resolution, ensuring brand consistency and high service standards.

Electrical Hardware Engineer to design reliable onboard power systems for maritime projects. Responsibilities include designing power systems, developing solutions for generation, storage, and distribution, and ensuring technical solutions meet project requirements. Requires a BSc degree in Electrical Engineering and experience with power systems and maritime regulations.

Specialist Instructor to deliver LNG-as-fuel training for cruise ship officers. Combines hands-on LNG operational experience with instructional skills for classroom and simulator-based training.

As a Response Planner, you will drive short-term demand and supply reconciliation, safeguarding service levels and reducing business waste. You will align priorities with Sales and Customer Service, manage AATP business rules, and coordinate process improvement.

As a Business Analyst Working Student at Picnic, you will analyze data, identify opportunities, and support strategies to improve the grocery shopping experience. You will work with a dynamic team to solve critical business questions and create models for real-time improvements.

UNIQLO seeks Sales Assistants to provide outstanding customer service and support store operations. Responsibilities include assisting customers, handling product deliveries, maintaining store displays, and collaborating with team members. Must be able to work weekends, holidays, and various shifts. Basic English required.

Registered Nurse needed for 1:1 care of an 80-year-old VIP client aboard a private yacht. Responsibilities include medication management, chronic condition monitoring, medical coordination, and travel accompaniment. Must have a BSN, 4+ years acute hospital experience, native English or C1 level, and be able to travel throughout Europe.

Web Developer (backend-focused) to build, maintain, and improve ecommerce and content sites. Responsibilities include designing and implementing backend features, translating designs into production-ready code, and optimizing database performance. Experience with PHP/Laravel, WordPress/WooCommerce, relational databases, and AWS is required.

Junior FullStack .Net Software Engineer will support technical excellence and delivery velocity by collaborating with senior engineers to build tools and adopt best practices. Responsibilities include analyzing deployment data, collaborating with cross-functional teams, and contributing to backend systems. Basic experience with C# and the .NET ecosystem, as well as familiarity with modern front-end frameworks, is required.

Assemble bicycles from start to finish, ensuring quality and safety standards. Tasks include mounting frames, adjusting gears, and testing brakes. Must be able to work independently and as part of a team.