developer English-speaking jobs in Leidschendam

As an Inside Sales Representative, you will support sales by handling inbound leads, managing existing customer requests, and developing new business opportunities. You will advise customers on hosting solutions, prepare offers, and conclude contracts.

Support Global Relationship Managers with operational and commercial activities, including prospecting and cross-sell opportunities. Coordinate due diligence and deal execution while ensuring regulatory compliance.

Production Technician responsible for manufacturing high-tech products from start to finish. Duties include assembling optical/mechanical components, calibration, testing, debugging, and process improvements.

Join a small team building property management software. Develop Python features using FastAPI, PostgreSQL, and Redis. Write maintainable code and test business flows. Bring hands-on Python experience and initiative.

Senior Back-end Developer needed with 5+ years of experience. Focus is on designing and maintaining backend services, preferably in Ruby on Rails, while managing agentic AI workflows.

Administrative Assistant supporting R&D at a manufacturing site. Responsibilities include WBSO process support, time registration, and laboratory operations assistance. Requires MBO Level 3, 3-5 years experience, and fluency in English and Dutch.

Senior Software Developer builds C#/.NET software turning ultrasonic inspection data into safety-critical pipeline decisions. Responsibilities include developing web apps, APIs, and mentoring internal developers.

Lead warehouse operations, managing team performance, safety, and efficiency. Responsibilities include planning inbound/outbound activities, operational control, KPI reporting, and driving continuous improvement using systems like D365.

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.

Inside Technical Sales Representative coordinates service, repair, and maintenance. Responsibilities include taking requests, advising customers, preparing quotations, and supporting field technicians. Requires MBO level 4 education and fluency in Dutch and English.

Support the HR Business Partner team in delivering people initiatives for ING’s Risk organization. Gain exposure to talent management, performance cycles, and workforce planning. Requires a degree in a related field and strong analytical skills.

Junior Technical Consultant role focusing on speed loss assessments and building Digital Twins for vessels. Requires a BSc/MSc in Naval Architecture or Marine Engineering, data affinity, and strong English writing skills.

Allround CNC Machinist responsible for setting up, operating, and optimizing CNC machines to manufacture high-quality components meeting exact specifications. Duties include machining operations, quality inspections, and troubleshooting production issues.

Cleaner needed for Bastion Hotels to clean rooms and bathrooms, make beds, and maintain hygiene standards. Must like cleaning, be neat, and speak Dutch or English. Experience is a plus.

Design, build, run, and improve mission-critical platforms by automating everything. This role requires expertise in scripting, configuration management, Git, and Infrastructure-as-Code.

Team Lead role at Nike Amsterdam Osdorp requires delivering world-class consumer service and ensuring a premium brand experience. Responsibilities include coordinating, coaching, and supporting daily business to meet sales targets across specialized areas.

Manage content partnerships and internal products, coordinating new integrations and migrations. This role combines partner management, product coordination, and commercial follow-up, requiring strong organizational and problem-solving skills.

Manage key electronic component categories by leveraging sourcing experience and supplier relationships. Responsibilities include developing suppliers, tracking market insights, and handling complex sourcing projects. Requires 3+ years in electronic components procurement.

Software Developer needed to build and improve applications within the Thinkwise platform using .NET, C#, SQL Server, and T-SQL. Responsibilities include building APIs, automating processes, and translating business needs into software solutions.

Contribute to the execution and continuous improvement of end-to-end Offer-to-Cash processes. Monitor workflows, conduct root-cause analysis, and support digitalization and automation initiatives.