developer English-speaking jobs in Leidschendam

Graduate Trader Programme in Amsterdam starting September 7, 2026. Intensive training in London followed by relocation to Amsterdam. Successful candidates will have a quantitative background, strong numeracy, and programming skills.

Manage complex capital projects from evaluation through execution, handover, and financial close-out. Lead multidisciplinary teams, coordinate resources, and ensure project objectives are met.

Provide testing and quality assurance support for the Joint Targeting System / Functional Area Service (JTS/FAST) software. Responsibilities include developing and maintaining test cases, performing manual and automated testing, analyzing defects, and contributing to test documentation.

Account Manager to drive new business growth within the beauty and personal care market. Develop and execute a strategic business development plan, identify and qualify prospects, and build long-term customer relationships.

Enterprise Application Engineer II will enhance and maintain enterprise applications, contributing to Booking.com's operational efficiency and productivity. Responsibilities include business consultancy, stakeholder management, analysis, innovation, problem-solving, coaching, systems design, technical incident management, and ensuring production systems best practices. Requires experience in software development, AI technologies, and SaaS applications.

Leads offshore operations, production planning, and performance for the Hollandse Kust West VII windfarm. Manages employee development, safety culture, and vessel operations. Requires 3 years of leadership experience in electrical or mechanical systems and offshore industry.

Senior Business Analyst to lead product development and integration for Digital and Traditional Assets platforms. Translate business requirements into technical solutions, define workflows, and collaborate with stakeholders.

Logistics warehouse worker needed for evening shift in Eindhoven. Responsibilities include sorting, processing, loading, and unloading packages. Must be able to lift up to 23 kilos and collaborate with colleagues.

Test Manager to develop test plans, coordinate activities, and ensure quality standards are met. Oversee test execution, track progress, and manage risks. Strong communication and collaboration skills required. Experience with Playwright, Karate, or similar frameworks.

Senior Android Engineer will design and build new features for Finom's Android application. Responsibilities include architecting and implementing solutions for multi-account cash flow management, banking transactions, card issuance, and AI-powered accounting automation. The role requires strong Kotlin skills, experience with Jetpack Compose, and a deep understanding of mobile development best practices.

Electrical Engineer responsible for ensuring the reliable operation of power network infrastructure. Will monitor, troubleshoot, and maintain electrical systems, supervise maintenance teams, and ensure compliance with safety and environmental standards. Requires a Bachelor's degree, experience in network operations, and knowledge of NEN3140 and NEN 3840.

Install and test advanced lithography systems at client sites worldwide. Perform calibrations, system qualifications, and troubleshooting. Work in a day-night shift schedule (12-hour rotations) and manage technical escalations. Bachelor's or master's degree in a relevant field required.

Project Buyer needed for New Product Introduction (NPI) projects. Drive supplier and component selection, source prototypes and tooling, and mitigate procurement risks. Collaborate with Engineering, Operations, Quality, and Finance to ensure project success. Bachelor's or Master's degree in a relevant field and 2-4 years of procurement experience required.

Envalior seeks a Plant Controller to support the Beekerveld production site. The role involves delivering cost overviews, managing monthly closings, preparing forecasts, and supporting budgeting. The ideal candidate has a finance background, strong analytical skills, and experience in financial or commercial controlling.

Senior Integration Engineer to own the technology and processes that bring HTML5 games to platforms like Netflix, Discord, Facebook, and Microsoft. Responsibilities include extending platform abstraction libraries, integrating third-party SDKs, and supporting multi-platform deployment. Requires several years of software development experience, strong TypeScript skills, and experience designing reusable libraries.

Senior Validation Engineer to lead validation activities for filtration and sterilization processes in a sterile production environment. Requires 5+ years of pharmaceutical industry experience, GMP knowledge, and expertise in validation protocols and reports.

Assistant Professor of Clinical Psychology to teach and conduct research on mechanisms, prevention, and treatment of mental health disorders. PhD in Clinical Psychology required. Experience in academic teaching and research, and fluency in Dutch and English are essential.

Repair and diagnose electronic and mechanical devices. Install and configure software components. Conduct functional testing to ensure product quality. Manage inventory and maintain stock records.

Lead the rollout of a Retail Media platform across multiple brands and countries. Manage end-to-end implementation, develop roadmaps, and serve as the primary point of contact for stakeholders. Drive project governance, coordinate cross-functional teams, and champion the standardized platform approach.

Plansee seeks a Key Account Manager to drive customer development and implement sales strategies in the Netherlands. Responsibilities include managing key accounts, identifying growth opportunities, and collaborating with internal stakeholders. The ideal candidate has a technical background, proven sales experience, and strong customer relationship skills. Fluency in Dutch and English is required.