developer English-speaking jobs in Leidschendam

The Workplace Experience Coordinator will create a positive and engaging office environment in Rotterdam. Responsibilities include managing office operations, organizing employee events, supporting onboarding, and assisting with People & Culture initiatives.

Senior Project Manager Electronics Systems drives the development of modules or products for the semiconductor, analytical, and medical equipment industries. Leads complex projects with multidisciplinary teams in system design, electronics, and embedded software. Prepares quotations, project plans, and monitors budget and product costs. Communicates with stakeholders, manages project teams, and ensures smooth production transfer. Requires a technical degree, 10+ years of project management experience, and fluency in Dutch and English.

Leiden University's Institute of Security and Global Affairs seeks an Associate Professor to lead research and teaching in international diplomacy, international relations, and international organization. The successful candidate will have a strong publication record, experience securing research grants, and proven leadership skills.

Support development of compact models for VCSEL and photodiode devices. Design and execute electrical and optical characterization tests. Collect, analyze, and visualize device performance data.

Master's student intern to model the Dutch power grid, focusing on grid congestion and its impact on the energy system.

Software Architect responsible for the architecture, design, and lifecycle management of software aspects within a high-tech company. Leads development, troubleshooting, and integration of multi-disciplinary subsystems. Requires 10+ years software development experience, 7+ years in architecture and design, and experience with C#, Python, and agile methodologies.

Senior Digital Merchandiser will own and execute a digital category strategy, driving commercial performance through data-driven merchandising actions. Responsibilities include developing merchandising strategies across key levers, optimizing product placement, and collaborating with cross-functional teams. Requires 5+ years of experience in digital merchandising, strong data analysis skills, and excellent communication abilities.

Build and maintain high-performance Java server-side logic, collaborating with front-end developers and stakeholders to deliver scalable backend solutions.

As a TH Employee at DHL Express, you will load and unload packages, sort shipments, and contribute to a safe working environment. You will work in a team to process packages efficiently and ensure timely delivery.

Senior Asset Reporting Analyst responsible for end-to-end execution and integrity of reporting on Robeco's Assets under Management (AuM) and Assets under Advice (AuA). Analyzes and explains asset movements, performs reconciliations, and contributes to reporting improvements. Requires 5+ years of experience in asset management, financial services, or a comparable data-driven environment.

Experienced forklift driver needed for LF Group. Operate side loaders, multi-directional forklifts, and heavy trucks up to 12 tons. Unload, check, store, and ship large, valuable decorative panels. Must have experience with oversized or fragile materials and work well under pressure.

Support international freight, logistics, and supplier performance activities. Coordinate daily contact with freight forwarders, carriers, and 3PL partners. Track claims, escalations, and supplier follow-up. Prepare KPI reports and support supplier reviews and contract processes.

Designs, builds, and operationalizes AI-powered solutions for Keylane's software platforms. Identifies opportunities for AI within customer business processes and translates needs into practical solutions. Collaborates with product teams, software engineers, architects, and stakeholders to turn ideas into scalable AI capabilities.

Assembly Mechanic needed for a production line role. Assemble high-quality machines and components in a team environment. Must have a technical mindset, experience in a technical role, and be able to work in two shifts. Fluent English required.

Design, develop, and maintain robust Java backend services and APIs using Spring Boot. Build and integrate RESTful web services on AWS cloud infrastructure. Collaborate with teams to deliver end-to-end solutions and implement CI/CD pipelines.

Senior Ivalua Technical Specialist needed for 6-month contract in Amsterdam. Expertise in Ivalua implementations, integration with SAP ECC, S/4HANA, Oracle ERP, and middleware platforms. Strong technical skills in API design, integration architecture, data mapping, and ETL. Experience with legacy procurement system migrations and cutover planning required.

Production worker needed for a hands-on role creating concrete elements. Tasks include assembling molds, pouring concrete, demolding, and cleaning. Rotating day shifts: 06:00-14:45 or 09:15-18:00.

Agentic SDLC Hub Engineer will design and build AI-powered agents and reusable capabilities to shape how Rabobank squads design, build, test and operate software. You will take ownership of complex GenAI and agent architectures, guide technical decisions, and help turn promising experiments into scalable building blocks. This is a hands-on engineering role for someone who combines strong software fundamentals with deep interest in GenAI, coding agents and rapid experimentation.

Experienced Product Owner with a software development background needed to guide the development of a new data integration platform. You will translate epics into user stories, manage the product backlog, and collaborate with internal and external development teams.

Senior Java Backend Developer will design, develop, and maintain scalable backend services using Java, Spring Boot, and Spring Security. Experience with microservices, event-driven architectures, and Kafka is required.