developer English-speaking jobs in Leidschendam

Electronic or Mechatronic Engineer needed to convert designs into communication systems for Naval and Defense customers. Responsibilities include system engineering across the lifecycle, sales support, and project delivery.

Experienced Pega QA Engineer needed to test Pega applications hands-on. Responsibilities include executing functional and regression tests, validating workflows, and communicating with Dutch-speaking customers and stakeholders. Strong Dutch skills are mandatory.

Drive strategic commercial projects and business cases, owning parts of the global commercial calendar. Develop new propositions and lead cross-functional programs to support future growth. Requires 7+ years in commercial strategy within consumer goods.

Enthusiastic Host needed for Leonardo Hotel Hengelo City Center. Duties include guest check-ins, reservations, assisting with luggage, and supporting breakfast service. Requires 2+ years hospitality experience and fluency in Dutch and English.

TIG Welder required for thin-walled stainless steel piping and gas distribution systems in the high-tech industry. Duties include orbital welding and TIG welding, working from technical drawings under strict cleanroom standards.

Lead business growth and ensure efficient daily operations. Responsibilities include identifying new opportunities, managing client relationships, and coordinating internal functions across sales, logistics, and finance. Requires 5+ years of relevant experience.

Develop UX patterns and design solutions for shared functionality across the Ons® Suite. Design complex software, develop design systems, and test prototypes with healthcare professionals. Requires 5 years of UX experience and proficiency in Figma.

Working in a small friendly team as a Production Operative & Warehouse Assistant, 40 hours p/week, fulltime hours. For the right candidate, the position would turn permanent after 12 months.

Junior Technician installs flue ducts and works at water management sites on roofs and scaffolding. Requires MBO level ability, hands-on skills, and no fear of heights. Experience with sheet metal is a plus.

Provide part-time IT Help Desk Support, automating Apple device provisioning and offering direct support to internal clients. Responsibilities include hardware management, troubleshooting meeting room platforms, and resolving common helpdesk tickets.

PhD position at Delft University of Technology to develop sustainable generative AI supporting European digital sovereignty. The project studies efficient foundation model inference across sectors like automotive and healthcare. Requires an MSc in a related field.

Experienced Quantitative Trader for crypto HFT. Develop systematic trading strategies, analyze high-frequency data, and optimize live algorithms. Requires a Master's/PhD in a quantitative field and strong Python skills.

Lead the Aramis CCS project through its critical phase, driving disciplined delivery toward FID and operational readiness. This role requires building the project organization and strengthening cooperation between partners.

Design and model precision mechanical actuators for mass production. This role involves multidisciplinary teamwork, CAE simulations, and applying knowledge of plastics, metals, and mass production techniques.

Proactive Business Development Manager needed to grow Fleethand in Benelux. This hunter role focuses on identifying and closing new clients in the transport and logistics market using fleet management and telematics solutions. Requires B2B sales experience and Dutch fluency.

Experienced reach truck operator needed for a full-time warehouse role. Responsibilities include safe goods movement and organization. Requires a valid certificate, 1+ year experience, and flexibility for rotating shifts.

Support the Facility team in an international logistics organization. Responsibilities include maintenance coordination, supplier management, workplace support, and process improvement projects. Ideal for an enthusiastic HBO or MBO student.

Build and own the data foundation for a climate control platform by designing scalable data pipelines and time-series platforms. Requires 5+ years building production-grade data platforms with strong Python and SQL skills.

Lead mechanical design for the MOSAIC Visible Spectrograph. Responsibilities include detailed modeling, design leadership, and documentation for opto-mechanical systems. Requires 10+ years in opto-mechanical design.

Technical Engineer in MedTech supporting engineering, documentation, and quality. Responsibilities include CAD drawing creation, managing non-conformances, and serving as a technical contact for internal teams. Requires an Engineering degree and 3 years of relevant experience.