qa English-speaking jobs in Leidschendam

Experienced Client Manager needed for Europe to drive revenue growth. Focus on consultative selling, managing the end-to-end sales lifecycle, and building strong client relationships within the aviation industry.

This role combines corporate accounting and controllership with treasury and investment management. Responsibilities include financial reporting, internal controls, cash flow management, and deploying excess funds. Requires 8+ years experience and CPA/ACCA.

Strategy Consultant to help leading semiconductor companies solve critical challenges, from operating model reinvention to supply chain resilience. Requires a Master's degree and 2+ years of consulting experience in the high-tech industry.

Junior Python AI Engineer to build agentic systems for an autonomous red-teaming platform. Requires hands-on experience with LangChain and LangGraph, RAG pipelines, and Python.

Head of Product for a global B2B SaaS company. This role involves shaping product strategy, leading a team, launching new products (0->1 and scale), and owning market adoption and revenue. Requires 8+ years in Product with leadership experience.

Territory Sales Manager to meet financial goals by developing dealer interest and buying potential. Requires fluent English, French, and Dutch, plus 5 years of new business generation experience.

Experienced bartender to join a dynamic team at The Tailor, an award-winning cocktail bar in Amsterdam. Craft classic and innovative cocktails, personalize drinks, and contribute to menu development. Proven experience, strong knowledge of spirits and cocktail techniques, and excellent communication skills required.

Business Data Analyst transforms raw data into actionable insights using Power BI and Python. Responsibilities include data wrangling across 50+ countries, building data pipelines with Microsoft Fabric, and exploring AI/ML techniques. Requires a relevant degree and 1-3 years of experience.

Warehouse Employee at UPS helps run daily warehouse processes by picking, checking, packing, and preparing electronic products for shipment. Tasks include scanning, quality checks, and moving goods. Must be available for shifts and work carefully.

Manage day-to-day relationships with mid-size customers across eCommerce, Press, and Mail solutions post-onboarding. Ensure service quality, support retention, and identify growth opportunities while coordinating with internal teams.

Senior Trader to scale commercial trading in environmental markets. Own a portfolio spanning carbon markets, EAC, and low-carbon fuels, driving P&L and structuring complex transactions. Requires 3-6+ years in energy/environmental commodities.

Key Account Manager to manage and expand the client base in the oil and gas industries across Europe. Responsibilities include driving sales growth, building client relationships, and negotiating contracts. Requires an Engineering degree and proven sales success.

Design and build the governed data foundation using Databricks, dbt, SQL, and PySpark. Implement semantic models and governance via Unity Catalog to create trusted, reusable data assets for business and AI.

Senior API Security Engineer to strengthen digital resilience by securing APIs. This role drives API security strategy, translating standards into platform policies and automation. Requires expertise in API/application security, OWASP, and authentication mechanisms.

Senior operational leader for Data Centre Operations across EMEA. Own 24x7 critical operations, uptime, and SLA performance. Lead new site startups, manage OpEx/CapEx, and develop regional teams.

Financial Controller role requiring strong analytical skills. Responsibilities include financial closing, reporting, payroll, and compliance for five entities. Requires Dutch and English fluency.

Product Engineer role focused on customer experience, experimentation, and conversion optimization. Responsibilities include designing and building A/B tests using Java and scripting, analyzing data with SQL, and leveraging AI/LLM tools.

Founding Forward Deployed Engineer to build Continuous Control Infrastructure. Deploy on-site with customers to translate operational problems into working software, prototyping and shipping into live, high-consequence environments.

Software (Data) Engineer to build and maintain data pipelines processing large volumes of sensor and building data for smart-building platforms. Requires strong Python skills and understanding of databases.

Senior IT Engineer responsible for end-user support, automation, and infrastructure. Requires experience with Microsoft 365, Entra ID, Intune, networking, and scripting like PowerShell.