software English-speaking jobs in Leidschendam

Commercially driven Gemologist needed for sales and business development. This hands-on role involves managing sales from lead to close, examining high-value assets, and developing the Dutch/Belgian market. Requires gemological expertise and native Dutch.

Account Manager to drive customer outcomes by delivering CX consultancy and data analysis. Requires fluency in Dutch and English, experience selling professional services, and knowledge of AI applications.

Build next-generation data infrastructure for LLMs and multimodal AI. Design large-scale data processing platforms, query optimizers, and vector indexing across CPU, GPU, and NPU environments. Requires strong R&D in distributed systems or HPC.

Junior CO2-Data Engineer to develop and maintain software and IT infrastructure for CO2-emissions transparency in EV charging. Requires Python experience, strong affinity for climate change, and ability to work autonomously.

Customs Clearance Manager role requiring 3+ years of experience in customs clearance and compliance. Responsibilities include reviewing customs/tax info, processing declarations, and coordinating with authorities. Requires Dutch and English proficiency.

Senior IT Buyer/Category Manager to own technology procurement across a transforming international organization. Lead strategic sourcing, negotiate complex deals across cloud, software, and infrastructure, and partner with senior IT leadership.

Onsite Service Engineer for Semiconductors. Own technical operation of cleanroom environments, ensuring equipment availability and functionality. Troubleshoot complex tools, support engineering teams, and maintain safe, compliant laboratory operations.

Product Engineer to design and build software systems automating investment fund operations for 60+ funds. Responsibilities include trade execution, risk monitoring, and data integration. Requires a Master's in CS and 3+ years of development experience.

Proactive Client Services Intern needed to help elevate customer care processes at a travel-tech company. Responsibilities include managing complaints, building client relationships, and supporting data analysis. Requires excellent communication and a customer-focused mindset.

RevOps Data Engineer responsible for maintaining data pipelines in Azure Data Factory, Power BI, and n8n. Own commercial data quality across HubSpot, Planhat, and Pendo, building insights for Sales and Marketing. Requires 3+ years in data engineering with strong SQL and Python skills.

Own digital development for aftersales platforms across Europe. Translate market insights into digital strategy, product roadmaps, and scalable solutions, managing the full product lifecycle.

Experienced Sales Development Representative or graduate seeking a tech sales role at a Series A SaaS company. This AI-powered platform helps businesses prevent operational risks. Fluency in Dutch and English required.

Experienced Payroll Specialist to manage German and French payroll, handling complex international and expatriate cases. Responsibilities include operational execution, tax/legal compliance, and leading payroll transformation projects.

Release Manager to plan and govern the deployment of a new POS system across multiple retail stores. Responsibilities include release planning, cutover management, and ensuring operational continuity during technology transformation. Requires 7+ years of IT delivery experience.

Results-driven Aftersales Manager to develop and manage business customers in the Netherlands. Responsibilities include building long-term relationships, identifying new sales opportunities, and achieving targets. Requires 5+ years in B2B sales and fluency in Dutch and English.

Junior Data Scientist to develop and validate AI algorithms for mental well-being using physiological and behavioral data. Focus on stress recognition and emotion detection for healthcare applications. Requires MSc and 1+ years of AI model development experience.

Experienced .NET Developer needed to build and maintain business-critical platforms for a financial institution. Requires 8+ years in software development, strong .NET/C# and Azure expertise, and experience in complex enterprise environments.

North of Normal seeks a freelance Senior Sports Business Development Partner to make warm introductions to sports brands, sponsors, and agencies. This role requires an established network to initiate credible conversations for creative and production work.

Experienced Go Developer needed to architect and optimize backend services. Focus on building scalable microservices, managing GCP/Kubernetes, and optimizing APIs with relational and NoSQL databases.

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.