developer English-speaking jobs in Leidschendam

Technical Sales Manager for automated pouch handling. Requires 5-10 years in international B2B sales (machinebuilding/food). Develop solutions, identify opportunities, and shape commercial strategy.

Experienced R&D Engineer to drive development of ePE membranes. Requires chemical/mechanical engineering degree, polymer/film technology knowledge, and project management experience. Must be fluent in Dutch and English.

Production & Material Planner secures material availability for warehouse and production operations. This role monitors inventory, manages shortages, and collaborates with stakeholders to ensure operational continuity. Requires analytical skills and experience with ERP systems.

Working in a small friendly team as a Production Operative (Temporary), 40 hours p/week until 22nd December 2026. Position to be reviewed end of year depending on key account orders.

Flavour Operator ensures correct taste and quality on the seasoning line at Yellow Chips. Responsibilities include operating equipment, quality checks, and flavour changeovers. English proficiency is required.

Senior Planner for E-Commerce in Fashion requires 4-7+ years of experience. Responsibilities include managing financial plans, optimizing inventory, and driving buying budgets across channels. Strong analytical skills and knowledge of demand forecasting are essential.

Coordinate air freight import shipments from arrival to final delivery. This role requires experience in air freight forwarding, knowledge of customs procedures, and strong communication skills in Dutch and English.

Own day-to-day financial administration, purchasing, and operational processes. This hands-on role requires accuracy in financial data entry, managing costs, and supporting HR and office administration.

Manage operational import flow, including confirming bookings, checking pre-alerts, and preparing customs clearance. Support export flow tasks as needed. Maintain proactive communication with customers and vendors.

Senior R&D Scientist develops next-gen InP Photonic Integrated Circuit technologies. Responsibilities include device/process development, DoE execution, and leading technical projects. Requires a PhD in related fields and experience in photonics/semiconductors.

Experienced Kitchen Manager needed for Mondi Caribbean Restaurant. Responsibilities include leading the team, managing daily kitchen operations, controlling costs, and ensuring food safety compliance. Must be hands-on and passionate about hospitality.

Part-time Sales Assistant role at Sports Direct. Proactively contribute to store performance by maximizing sales opportunities and exceeding customer expectations. Maintain store standards and process deliveries efficiently.

Ensure policies and procedures are implemented per the Oxfam Novib Project Cycle. This role provides quality control, oversight, support, and training on processes related to projects and grants.

Energetic Restaurant Manager needed to lead kitchen and front-of-house teams. Responsibilities include staff management, operations, and ensuring excellent guest experience. Requires team leadership experience and strong communication skills.

Logistics & Maintenance Manager to ensure seamless lab and facility operations. Responsibilities include managing cold-chain transport, LN2 infrastructure, equipment maintenance, and vendor relations. Requires a background in Life Sciences, Supply Chain, or Facility Management.

Full-time Allround technical assistant role involving inspecting, repairing, and maintaining equipment and installations. Requires secondary vocational education, technical interest, and good physical fitness.

Assistant Purchasing Agent responsible for daily purchasing, monitoring orders, and managing supplier relations. Requires purchasing experience, strong communication, and proficiency in Dutch and English.

Senior Study Start Up Associate supports the Study Start Up Team Lead in developing and executing country and site distribution plans in the Netherlands. Requires experience in Clinical Trial Submissions for the Netherlands.

Field Service Engineer for Thermal systems providing start-ups, maintenance, and emergency repairs for environmental and cooling systems. Requires refrigeration/HVAC qualification, technical skills, and willingness to travel.

Customer Service Representative for German and English markets. Handle inquiries via email, phone, chat, and social media. Resolve issues, process orders, and improve customer experience. Requires C1 German and B2/C1 English.