developer English-speaking jobs in Leidschendam

Support clients in pre- and post-deal M&A projects focusing on IT strategy and key technology aspects. Identify technology capabilities, assess IT quality and effectiveness, and explore opportunities and risks. Work in project teams on IT Due Diligence, Carve out, Integration, and synergy assessments.

As an Associate Buyer, you will manage full-cycle procurement for the Western European market, identifying leads, negotiating deals, and building supplier partnerships. You will leverage market intelligence and cold outreach to secure profitable inventory acquisitions.

Evaluates smart metering and EV charging technologies against international standards and legal metrology requirements. Manages certification projects from application to approval, defining test plans, coordinating testing activities, and reviewing technical documentation. Collaborates with customers, test engineers, and internal specialists. Performs on-site testing at client locations.

Site Controller provides financial and controlling advice to site leadership, manages month-end and year-end closing processes, and analyzes P&L performance.

Junior Allocator needed for a global Retail & Sportswear client. Analyze sales and inventory data to forecast demand and optimize stock distribution. Ensure the right product assortment is allocated across stores to maximize sales performance.

This freelance IT Risk Officer role supports NN Group IT in demonstrating effective management of IT and cyber risks. Responsibilities include coordinating risk reporting, supporting audits, and translating complex risk information into clear, actionable reports. The role requires experience in risk reporting, IT risk, cyber risk, internal control, IT audit, or assurance, as well as proficiency in Microsoft Excel, Power BI, and workflow/ITRC tooling. Dutch language proficiency is strongly preferred.

Contentsquare seeks a dynamic Partner Sales Manager to develop and manage partnerships in the EMEA North region. This role focuses on generating pipeline, supporting sales efforts, and collaborating with marketing to drive revenue growth. The ideal candidate has experience in channel management, direct new business sales, and building relationships with solution partners.

Operational & Strategic Process Manager will translate vision into practical, scalable solutions, manage projects, and structure internal collaboration.

Drive the Digital Grid strategy for South & West Europe, analyzing customer needs and crafting tailored technical and commercial bids. Collaborate with local sales teams and the DG execution unit, representing Siemens Energy at industry events.

Applied Scientist will build and deploy AI Physics Models alongside LLMs for industrial customers. Responsibilities include curating simulation datasets, training and evaluating models, and delivering AI solutions to engineering teams. Requires a PhD or Master's in AI or an engineering science and strong understanding of deep learning and engineering or physics.

Senior Java Solution Architect will design and develop scalable microservices-based solutions using Java 17+ and cloud-native architecture principles. Responsibilities include creating technical design artifacts, leading architectural discussions, and collaborating with stakeholders to translate business requirements into technical solutions.

Electrical & Instrumentation Designer needed for Innovations Department in Delft. Develop electrical power systems, automation systems, and ship services across all engineering phases. Requires MBO or BSc in Electrical Engineering, 4+ years experience as an E&I Designer or 7+ years as an E&I Draftsman, AutoCAD and EPLAN experience, and Siemens automation hardware experience.

Define and optimize composite manufacturing processes, from design and material selection to production and delivery. Collaborate with clients and internal teams to ensure successful project execution.

Global Account Manager identifies and secures new business opportunities globally. This role involves direct outreach to IT Decision Makers to position Cogent's connectivity solutions. Success is measured by meeting revenue goals and establishing Cogent as a trusted partner.

The Senior Infrastructure Engineer ensures the availability, resilience, security, and performance of Yamaha Motor Europe's IT infrastructure, including server, storage, virtualization, database, and endpoint environments. This role contributes to infrastructure security, risk reduction, and compliance with EU NIS2 requirements. The Senior Infrastructure Engineer monitors, maintains, and operates IT platforms, ensuring service levels are met and collaborating with a team of infrastructure professionals.

The Financial Risk Officer - Integrated Process Control contributes to analysis and advice regarding financial risk management processes and controls. The role safeguards compliance with ING policies and regulations, contributes to firm-wide change initiatives, and supports FR in remediation of gaps and mitigation of risks.

Retail Workforce Management Specialist will act as the functional owner of the WFM platform, ensuring efficient operation and providing user support. The role will lead the implementation of a new WFM system in 2026, collaborating with Retail Operations, IT, Finance, and HR. Responsibilities include configuring and managing the scheduling engine, providing user support, monitoring system performance, and analyzing workforce data.

Lead and manage a team of Telesales representatives in driving B2B growth strategy for SIXT. Develop and expand the corporate client portfolio, achieving sales objectives and monitoring KPIs. Proven B2B telesales experience, team management, and fluency in Dutch and English are required.

Develop flight simulation and structural test systems, ensuring compliance with industry standards and customer requirements. Collaborate with multidisciplinary teams to design, model, and document integrated systems.

Senior Underwriter responsible for business development and underwriting trade credit insurance for banks and financial institutions. Structures complex credit and insurance solutions and manages the full offer and contract process. Requires a degree in Business Administration, Economics, or a comparable field and 6-10 years of experience in trade finance, receivables finance, supply chain finance, export letters of credit, and leasing.