intern internship English-speaking jobs in Klosterneuburg

People Operations Specialist to strengthen operational excellence and frontline support within the People function. Manage day-to-day HR processes, maintain systems, and drive scalable workflows. Support leadership with People analytics and HR business partner initiatives.

Senior Java/Kotlin Developer builds sustainable software solutions using agile methodologies and test-driven development. Collaborates with clients and teams to deliver projects such as cloud detection, student portals, and mobile applications. Requires fluency in German and English, strong problem-solving skills, and a passion for Java, Kotlin, and Spring Boot.

Provides administrative support to the Country Manager, manages local office operations, and administers country finances. Handles scheduling, travel arrangements, expense reporting, and calendar management. Oversees local funds, expense planning, and financial reporting. Ensures alignment of country budgets with organizational goals.

Postdoctoral researcher to conduct autonomous research in Digital Twins, model-driven engineering, simulation, and software modelling. Collaborate with international partners and publish scientific results. Develop software tools and simulation pipelines. Doctorate in a relevant field required.

As Solution Architect, you will translate business requirements into solution architectures, aligning them with enterprise guidelines. You will support the Product Family Lead and stakeholders, ensuring solutions are scalable, sustainable, and resilient. You will analyze the integration and application landscape, ensuring new solutions integrate seamlessly with existing systems.

As (Senior) Sales Manager Americas, you will develop and acquire new customers, manage existing portfolios, and contribute to the hotels' short and long-term success. This role involves international travel, trade show attendance, and market observation.

As a Sales Consultant for Czechia and Slovakia, you will build PlanRadar's customer base by actively contacting leads, executing the sales process, and achieving sales targets. You will conduct product demonstrations, onboard clients, and collaborate with other departments.

Leads complex Information Systems (IS) projects focused on infrastructure, security, and foundational platforms. Manages project scope, financials, risks, and stakeholders, ensuring successful delivery aligned with ABB strategies.

Field Service Engineer installs, maintains, and repairs diagnostic systems including clinical chemistry, immunochemistry, and automation. Requires a technical background, strong customer service skills, and fluency in German and English. Travel is required.

Senior Strategy Consultant for RBI Group. Develops and assesses strategic recommendations for product categories, subsidiaries, and new markets. Manages strategic projects and provides input to top management. Requires advanced degree, banking experience, and strong analytical and communication skills.

Sales Business Development Manager to drive revenue growth in Europe. Responsibilities include market research, developing key accounts, and managing the sales process. Requires 5+ years of experience in high-performance engineering plastics sales and fluency in English & German.

Advisory professional providing audit, accounting, and tax services. Requires understanding of client needs, accounting systems, and industry regulations. Must have a relevant professional certification (ACCA, CPA, CFA, or CIMA) and 90+ credit hours in Accounting or Finance.

Technical Writer will create and manage technical documentation including manuals, user guides, and detailed technical materials. Collaborate with teams to gather information and ensure consistent communication.

Postdoctoral researchers are sought to investigate human heart development and disease using cardiac organoid technology. Positions focus on establishing functional circulation in cardioids, developing computational tools for data analysis, and studying fetal heart growth. Applicants require a PhD and strong publication record in vascular biology, bioengineering, computational biology, or cardiac/developmental biology.

Manages and executes waterdrop's B2B and order fulfillment operations. Ensures timely, accurate, and cost-efficient order execution. Analyzes fulfillment and assembly performance using KPIs. Supports the development of standardized warehouse management processes. Requires 3-5 years of supply chain management experience, project management skills, and fluency in English and German.

The IAEA seeks a consultant to coordinate technical support and capacity building efforts for the SoilFER project, focusing on Mid-Infrared Spectroscopy (MIRS) and Visible-Near Infrared Spectroscopy (Vis-NIRS) technologies. The consultant will ensure quality implementation of country-scale data integration into national soil information systems.

NTU International A/S seeks an Infrastructure Finance & Procurement Expert to support a project analyzing publicly accessible urban EV charging infrastructure across the EU. The expert will provide a comprehensive sector-wide analysis of charging infrastructure, focusing on neighborhood, destination, and urban hub segments.

Expert in ultra purified water production and wastewater treatment for semiconductor and battery industries. Designs and commissions purified water systems and wastewater treatment plants. Leads project teams and supports offer preparation. Requires 10+ years of experience in process engineering and strong English skills.

Lead strategic sourcing and evaluation of late-stage clinical assets in Immunology, Hematology, and Cardiovascular/Renal therapeutic areas. Drive cross-functional due diligence and partner with Business Development to advance high-priority opportunities.

Shape how the world discovers Tomorrow University as our Marketing & Communications Manager. You will own storytelling, campaign execution, and external communications, collaborating with founders, faculty, product, and sales teams. Responsibilities include planning and running multi-channel campaigns, creating impactful content, managing press and awards, and strengthening the Tomorrow University brand.