student English-speaking jobs in Gelsenkirchen

The European XFEL is seeking a researcher to work on a European-wide optics and metrology project. The role involves coordinating tasks related to the systematic study of X-ray optics contamination, applying cleanroom technologies to recover them.

Research Assistant (m/f/d) for a limited period of 2 years at the Chair of Signal Processing for Medical Applications. Responsibilities include independent research on speech enhancement, development of prototypes, and assistance in teaching. A completed university degree in electrical engineering, computer science, biomedical engineering, or a related field is required. Excellent knowledge of classical and statistical signal processing and relevant mathematical methods is essential.

Provide first-level customer support to Finnish-speaking customers via phone, email, and chat. Process orders, manage customer accounts, and handle returns, exchanges, and repairs.

As an Outbound Account Executive, you will own the full sales cycle for established small merchants (upmarket SMBs) with monthly transaction volumes above €15,000. You will proactively reach out to prospects via cold calls, emails, and social channels, manage your sales territory, and build a strong sales pipeline. You will lead discovery meetings, position payment and POS solutions, and collaborate with internal teams.

Flink seeks an Operations Associate to pack customer orders, ensure product quality, manage inventory, and maintain a clean and organized work environment. Must be at least 18 years old, have a German work permit, and be fluent in English or German.

Manage demanding development projects in prototype construction for complex land systems. Coordinate construction of laboratories and manage test components for environmental simulation. Plan project schedules, communicate progress, and procure materials.

Legal Working Student to support a growing InsurTech company. Provide day-to-day legal guidance across various departments, including Operations, Marketing, and People. Support with contract review, research, and policy development.

The German Institute of Human Nutrition seeks two Postdocs to join the Department of Computational Precision Nutrition. Successful candidates will develop methods for analyzing digital N-of-1 trials and large epidemiological studies, contribute to software development, and perform data analysis and visualization. Expertise in Causal Inference, Statistics, Deep Learning, or Bioinformatics is required.

As a Sales Stylist, you will provide exceptional customer service, share product knowledge, and assist with store operations. You will help customers find their perfect fit and contribute to a welcoming shopping experience.

Sales Development Representative to drive growth in the Polish market. Responsibilities include outbound prospecting, lead qualification, and pipeline management. Requires fluency in Polish and English, strong communication skills, and experience in B2B sales.

Spend your summer as a Rental Sales Agent at Frankfurt Airport. You will be the first point of contact for customers, providing sales and service. You will handle rental agreements and inquiries, ensuring a positive customer experience.

Leads strategy and roadmap for enterprise eHealth portfolio, including cloud and platform solutions. Manages full product lifecycle from concept to end of life.

VAT Manager ensures timely and accurate VAT compliance across multiple countries. Supports business with VAT advisory on cross-border transactions and day-to-day operations. Reviews and improves VAT-related processes and controls. Monitors VAT legislation changes and assesses organizational implications.

Provide customer support for GRID's Odds products and trading-related services. Investigate customer queries and operational alerts, communicate with customers, and support issue resolution.

Provide childcare for children ages 6 months to 12 years old in a ski resort setting. Responsibilities include creche duties, assisting with ski school, and evening activities. Requires a childcare qualification (minimum NVQ Level 3 or equivalent) and previous experience working with children of all ages.

As an Investment Valuation Manager / Associate, you will provide valuation expertise for renewable energy assets across their lifecycle, supporting investment decisions and collaborating with stakeholders. You will refine valuation methodologies, financial models, and best practices.

As CTO, you will lead technical direction for Caelex, shaping the future of space-compliance software. You will own architecture, scale the platform, build the engineering team, and drive enterprise capabilities.

This ERC-funded project pioneers the inverse design of time-varying metamaterials. The postdoctoral researcher will develop computational frameworks for 4D design, implement large-scale simulations, and collaborate with experimental partners.

Front Office Shiftleader responsible for ensuring smooth guest check-in and administrative processes. Requires hotel business training, experience, fluency in English, and the ability to inspire both guests and staff.

The Customer Excellence Director will lead the affiliate-wide Customer Excellence agenda, partnering with the General Manager and Affiliate Management Team to drive commercial performance, customer experience, and operational effectiveness. This role will focus on business planning, transformation, customer excellence, and digital enablement.