developer English-speaking jobs in Leidschendam

Experienced Electrical & Mechanical Design Consultant needed to support full-scale Data Centre facility design. Responsibilities include developing and reviewing electrical designs, grading technical drawings, and ensuring multidisciplinary coordination. Proven Data Centre design experience in the Netherlands is essential.

Software Engineer to contribute to open-source development projects supporting AI training. Responsibilities include feature development, debugging, refactoring, and performance optimization in real-world codebases. Requires skills in Python, Java, Rust, C++, or TypeScript.

Junior Operator supports production by operating and monitoring lines, performing quality checks, and troubleshooting minor technical issues. Requires a detail-oriented, proactive individual fluent in Dutch or English, willing to work 3 shifts.

Lead teams to craft visually striking concepts across CGI, motion design, and interactive media. Direct specialized CGI artists and apply art direction expertise to deliver award-winning, technically precise, and emotionally resonant work.

Senior SAP EWM Team Lead for an S/4HANA transformation. This hands-on role involves functional leadership, coaching EWM consultants, and influencing S/4HANA template and process development. Requires strong SAP S/4HANA and EWM experience.

Software Engineer needed to build a new cloud-based platform. This full-stack role focuses on backend development using TypeScript, Node.js, and AWS. Responsibilities include developing APIs, serverless solutions, and ensuring system reliability.

Provide technical leadership in crane and rigging across Europe, supporting major Turnaround and project activities. This role involves planning, risk management, and ensuring compliance with industry standards.

Test Automation Engineer needed to build and maintain scalable automation frameworks. Key duties include developing scripts using Playwright and integrating tests into CI/CD pipelines. Requires 3+ years in QA with strong Python skills.

Factory Layout Production Engineer initiates and prepares changes to Factory Layout and work center layout based on roadmaps and NPI. Requires an HBO degree in Industrial/Mechanical Engineering and 3+ years in a high-tech production environment.

Perform end-to-end repairs on mechanical seals, including disassembly, inspection, and testing. Use precision measuring equipment and prepare repair recommendations. Requires a mechanical background and strong communication skills.

Senior SAP SuccessFactors Consultant to lead regional implementation and enhancement projects for a large international organization. Requires expertise in SAP SuccessFactors Employee Central and experience supporting multi-country HR operations across Europe & Africa.

Join Thuisbezorgd.nl as a Student Job Courier. Deliver pizzas and groceries using a car or bike. Must have a valid license and commercial insurance if using a motorized vehicle. Requires shifts on weekday and weekend evenings.

Develop and maintain the Commodity purchase flow using Angular, TypeScript, and SCSS. Collaborate with stakeholders to deliver scalable, conversion-focused sales experiences while contributing to AI initiatives.

Junior Business Consultant role involving client insight provision, lead generation, and account management for local FMCG clients. Requires HBO/University education and 1-3 years of relevant experience.

Facility Officer responsible for negotiating with suppliers, monitoring costs, and drawing up budgets. This role involves optimizing operational efficiency, managing vendor relationships, and maintaining facility supplies. Proficiency in Dutch and English is required.

Senior Quality Engineer to own and grow the quality of AI-powered experiences. You will shape testing for LLMs and AI agents, expanding Playwright coverage and validating AI outputs for reliability and safety.

Seasoned Contract Attorneys are needed for a part-time, remote role to help train and evaluate legal AI. Responsibilities include contract redlining, assessing AI responses, and creating evaluation frameworks. Requires 3+ years of in-house tech transaction experience.

Senior Account Manager develops strategic customer relationships and drives account growth. This role involves acting as a trusted advisor, aligning solutions with business objectives, and managing account performance. Fluent Dutch and English are required.

Temporary IT Sales Executive/Sales Development Representative needed for a cybersecurity company. Must be Dutch speaking, fluent in English, and have sales experience. Responsibilities include engaging new clients and handling leads to drive revenue growth.

Business Analyst/Associate Consultant to co-lead projects improving business outcomes using lean, agile, and data/AI approaches. Requires a Master's degree and 2-5 years in Innovation/Operations, with strong analytical and communication skills.