Working Student - Mobile Developer (f/m/d)

Join Vattenfall as a Working Student in Data Science and contribute to innovative projects that shape the future of energy. You will work collaboratively within a team of data scientists, assisting in developing data-driven solutions to enhance our operational efficiency and customer satisfaction.

adjoe is at the forefront of transforming mobile advertising. Leveraging cutting-edge AI technology, first-party data, and a team of exceptional engineers, we have optimized the offerwall experience for app publishers. Our innovative solutions, including Playtime and Arcade, represent the fastest-growing rewarded advertising channels globally, enhancing user engagement, retention, and revenue streams. Additionally, we are making strides in programmatic advertising through our advanced bidding system, adjoe Ads, creating a dynamic ecosystem that connects app developers with over 600 million users worldwide for sustainable growth. With offices in Hamburg, Boston, Singapore, and Tokyo, adjoe is shaping the future of app and ad experiences today.Become a part of our journey. Join Our Advertising Solutions Team Our team specializes in building advanced technologies that connect advertisers with the ideal users for their apps and games. Integrated with adjoe’s machine learning models, our custom APIs process 2 billion requests daily with minimal latency. We have engineered advertising campaign management and sophisticated analytics tools that deliver actionable insights on 200 million daily users to both our internal teams and external partners. Our Go-based backend integrates seamlessly with a TypeScript React frontend, enabling complex analysis through columnar databases like Druid, providing sub-millisecond query response times, alongside MySQL, Redis, DynamoDB, and Kafka. For developers, this role offers the opportunity to work on high-performance systems that handle extensive datasets while embracing an agile development methodology.

ZEAL Network SE is a dynamic, internationally active corporate group that has been creating exciting and innovative lottery experiences for over 20 years. As Germany's largest provider of online lotteries, under our brands LOTTO24 and Tipp24, and as a trusted partner of ONCE, the second-largest national lottery in Spain, we are shaping the future of the lottery industry. Our passion for innovation is demonstrated through our latest brands Freiheit+ and Traumhausverlosung, which bring fresh and exciting dreams to life. Additionally, we invest through ZEAL Ventures in inspiring e-commerce start-ups like Omaze and DAYMADE, fostering new ideas and opportunities.Our team of over 350 experts from diverse backgrounds is united by a visionary mindset, a passion for collaboration, and a shared goal: to inspire dreams. At ZEAL, we encourage our employees to think big and work together towards a common purpose: helping people recognize and realize their dreams.As a Working Student in the Creative Studio Team, you will assist in the development and implementation of innovative visual and conceptual content across various channels. The primary purpose of this role is to actively support creative processes, both operationally and conceptually, and to help the team create high-quality marketing content in different formats.

Join Our Team as a Working Student in Quality Management!Are you ready to dive into the dynamic world of product development? We are seeking a motivated Working Student (m/f/d) in Quality Management to support the specification and documentation of raw materials and active ingredients. Collaborate closely with our Product Development Team on exciting projects and contribute to the growth of the brands ESN & More Nutrition. If you're eager to apply your knowledge practically and make an impact, we want to hear from you!Your MissionEngage in the specification of raw materials.Maintain and organize documentation for raw materials and active ingredients.Contribute to small to medium-sized projects.Work closely with the Product Development Team.

About the Role Eurofins Scientific in Hamburg is seeking a Working Student in Process and Project Management (m/f/d). This position offers hands-on experience for students interested in learning how project management teams operate within a global company. What You Will Do Assist the project management team with daily tasks Support efforts to improve and streamline business processes Help coordinate and track project activities to ensure projects move forward smoothly Who We’re Looking For Current student interested in process optimization and project management Motivated to learn and contribute to team goals Organized and attentive to detail This is a part-time student role based in Hamburg.

Start Date: 01.03.2026 | Position Level: Working Student | Location: Hamburg | Working Hours: Part-time (20 hours/week)Join our dynamic team in Packaging Development! As a Working Student, you will be instrumental in creating and maintaining technical specifications while also developing innovative packaging solutions. If you have a background in packaging technology or food technology and are eager to contribute to the growth of the ESN & More Nutrition brands, we want to hear from you!

Join Us Now! We are looking for a dynamic and ambitious Working Student (m/f/d) to support our Campaign Team. In 2022, we have exciting plans for growth, and we need your help to make it happen. Our comprehensive suite of tools is ready for you to utilize to its fullest potential. Apply NOW and become a vital part of our dedicated team!The opportunity is straightforward: if it works well for both of us, you could secure your first job right after graduation. We look forward to welcoming you!Alongside your studies, your responsibilities may include:Setting up and managing performance marketing campaigns within our proprietary software suiteEnsuring the quality of resultsCommunicating with clients

Start: Immediately | Level: Working Student | Location: Hamburg | Working Hours: Part-time (20h/week)As a Working Student in Quality Management, you will assist in the specification and documentation of raw and active ingredients while collaborating closely with the Product Development Team on various projects. If you are eager to apply your knowledge practically and are excited to advance the brands ESN & More Nutrition, we invite you to join our team!

Join ABOUT YOU as a Working Student in our Exclusive Collaborations team! This is a fantastic opportunity for students who are keen to gain hands-on experience in a dynamic and innovative environment. You will collaborate with various teams to help develop exclusive partnerships that align with our brand vision. Your contributions will directly influence our strategic initiatives and enhance our market presence.

About the Role Applike is looking for a Working Student - Backend Developer & Data Analyst in Hamburg. This position offers practical experience in building backend systems and working with data to support business decisions. Collaborate with experienced professionals and contribute to real projects in the tech industry.

check24 invites a Working Student (m/f/d) in Software Engineering to join the InsurTech team in Hamburg. This position centers on gaining practical experience with active projects while working alongside experienced colleagues. What you will do Contribute to software engineering tasks within the InsurTech team Work on real projects that support business goals Collaborate with team members and receive mentorship What you bring Interest in software engineering and technology Willingness to learn and participate in team projects Availability to work in Hamburg

About the Role Vattenfall is looking for a Working Student to join the Data Administration Support team for Learning & Development in Hamburg. This role gives students a chance to apply academic skills in a real-world setting while helping to improve employee learning and development initiatives. What You Will Do Assist with data management tasks related to learning and development activities Help maintain and support the smooth operation of learning systems Contribute to projects focused on enhancing training processes Who This Role Suits This position fits students seeking hands-on experience in learning and development, especially those interested in data administration and process improvement.

About Us:BuildlinX is revolutionizing building automation. We are tackling one of the most pressing challenges of our time: transforming building operations, which account for approximately 30% of global CO2 emissions, into a fundamentally more efficient and climate-friendly process.We are a team of currently 20 talented individuals and proud to be one of the fastest-growing bootstrapped tech companies in Northern Germany. Here, there's no investor jargon, just real results and sustainable growth.Your Role:As a working student in project assistance, you will serve as the link between digital planning and on-site implementation, ensuring our intelligent solutions come to life within buildings.Hands-on Support: You will assist with the installation of sensors and other hardware, systematically identifying faults in technical systems.Digital Twin Modeling: You will model locations as Digital Twins to create a data foundation for our optimizations.Data & Analysis: Using our digital tools, you will investigate sites for errors or anomalies and identify root causes.Technical Setup: If skilled, you will provision edge computers, configure hardware, and support our team in operational project management.Process Improvement: You will actively contribute to making our project processes smarter and more efficient. A role typically requiring a consultant.

Statista Inc. is seeking a working student to join the Healthcare Business Development and Operations team in Hamburg. This position is designed for students interested in building experience within healthcare data and analytics. Role overview The working student will support business operations by assisting with strategic projects and contributing to market analysis. Tasks may include gathering and reviewing healthcare data, helping identify trends, and supporting the team in ongoing operational improvements. What you will do Assist with business operations in the healthcare sector Support strategic projects and initiatives Contribute to market analysis and research Help identify and implement operational improvements Who this role suits This role is intended for students eager to gain practical experience in healthcare business development and operations. Curiosity about healthcare data and analytics will be valuable in this position.

Join atmio and contribute to innovative technologies aimed at sustainably reducing methane emissions in the gas industry.As a working student (m/f/x) in Mechanical Design, you will be more than just a cog in the machine; you will help us build the methane sensors of the future. Your responsibilities will span from the initial prototype to preparing for mass production.Your Responsibilities Development: Design smart and robust housings for our sensor devices, from initial sketches to final manufacturing documentation.Prototyping: Bring your ideas to life—3D printers will be your best friends.Production Technology: Think beyond just the prototype and optimize our assemblies for mass production, especially for injection molding.

At Statista, we are passionate about transforming data into actionable insights, standing as the premier business data platform globally. We deliver reliable and user-friendly data alongside advanced analytics products and services, empowering individuals and organizations to make informed, fact-based decisions.Founded in Hamburg in 2007, Statista has rapidly evolved into a global organization with offices in key cities like London, New York, Berlin, and Tokyo. Our ongoing growth is a testament to our success and continually opens up new avenues for career advancement and personal development for our team members.We celebrate and embrace diversity, welcoming individuals from all walks of life. Your unique perspective is valued at Statista, and we encourage you to continue your story with us.Are you prepared to embark on this journey with us?About Statista Healthcare Statista Healthcare operates as a dedicated segment within Statista, aiming to enhance transparency and measurability of healthcare quality across various countries, settings, and specialties. Collaborating with prominent healthcare stakeholders worldwide, we leverage our analytical expertise and technology to facilitate data-driven quality assessments and transformations.Our offerings include international rankings, ratings, benchmarking studies, and tailored consulting projects. Our esteemed global healthcare rankings and hospital ratings, produced in partnership with Newsweek, ensure high visibility and trust across the market.We guide healthcare organizations in identifying key performance indicators, validating and harmonizing data structures, and converting insights into actionable strategies. Our methodology is rooted in a data-driven understanding of healthcare quality, emphasizing robust methodologies, global comparability, and trust among stakeholders.In our consulting endeavors, we assist healthcare providers and systems in creating customized KPI frameworks, standardizing and validating data processes, and deriving actionable insights that lead to significant enhancements in patient care and overall system performance. Our approach combines structured methodologies with practical execution to unlock the full potential of healthcare quality data.Your Role As a Data Science Consultant for Statista Healthcare, you will be an integral part of our international team of data experts, contributing to the analytical foundation of our healthcare initiatives.

About the Role CHECK24 is looking for a Working Student (m/f/d) in IT with a focus on Software Development and Artificial Intelligence. This position is based in Hamburg and offers practical experience alongside ongoing studies. What You Will Do Support software development projects that use AI technologies Work closely with experienced developers and team members Contribute to ongoing projects and learn from real-world challenges Why Join Gain hands-on experience in software development and AI Work on projects that shape digital products and services Collaborate with a skilled team in a supportive setting

Join dreessommerse as an Intern or Working Student in Infrastructure Consulting, where you will have the opportunity to contribute to exciting projects and gain hands-on experience in a dynamic environment. This role is perfect for students eager to apply their theoretical knowledge in practical scenarios and collaborate with experienced professionals in the field.

adjoe is a premier mobile advertising platform that specializes in developing innovative advertising and monetization strategies aimed at elevating the business performance of our app partners. As a proud member of the applike group ecosystem, adjoe boasts a sophisticated technology stack, robust financial support from Bertelsmann, and a dynamic workforce dedicated to excellence.Join Our Programmatic Data Science TeamDid you know that in-app advertisements are auctioned in real-time before being displayed across thousands of mobile applications? Numerous ad networks compete for each impression, selecting the most effective ad and determining their bid price within mere milliseconds. At adjoe, we have engineered our own ad network that engages in this competitive arena, challenging industry leaders to showcase our unique ads.In the fast-paced world of real-time bidding, our Programmatic Data Science team thrives on innovation, crafting advanced algorithms and systems that consistently outperform established industry contenders. Our methodology is grounded in extensive research on user behavior, along with the goals of publishers and advertisers, all aimed at delivering an optimal user experience. We are a nimble team that swiftly converts theoretical concepts into impactful solutions, leveraging cutting-edge technology and collaborating closely with product and business stakeholders.