Senior Fullstack Engineer in AdTech

About the Team:Join the Mobile Platform Squad as a Senior Android Engineer at SumUp, where you will play a crucial role in the foundation of our Mobile Engineering division. Your team is tasked with creating and maintaining an efficient development environment that empowers Mobile Developers to deliver high-quality products. Additionally, you will provide support and guidance to your colleagues interacting with our mobile applications.Our engineering culture emphasizes autonomy, collaboration, and innovation. You will engage with mobile engineers across the organization, as your initiatives will have a significant impact. The squad is dedicated to:Maintaining CI/CD pipelines for mobile projects.Developing tools and infrastructure to enhance the developer experience.Supporting and optimizing the codebase across SumUp's mobile applications.Driving long-term technical scalability and impact across the company. Your Responsibilities:Design the core experience for merchants and developers interacting with SumUp’s Android ecosystem.Develop and maintain tools, frameworks, and infrastructure that improve the consistency, scalability, and reliability of our mobile applications.Collaborate with cross-functional teams, including product, design, and backend, to deliver seamless user experiences.Work on CI/CD systems, developer tooling, and performance optimizations to streamline mobile development processes.Mentor team members and provide technical guidance across various projects.Uphold a high standard of engineering excellence and continuously improve by introducing new technologies and best practices.Lead technical projects from conception to implementation, ensuring alignment with business needs and technical standards.

Join our innovative team at redcare-pharmacy as a Senior Android Developer. In this pivotal role, you will leverage your extensive expertise in Android development to create exceptional mobile applications that enhance our customer experience. Your contributions will directly impact the efficiency and quality of our digital health solutions.

Join our dynamic team at redcare-pharmacy as a Senior Platform Engineer. In this role, you will leverage your expertise to design, develop, and maintain robust platform solutions that enhance our services and improve user experiences. You will collaborate closely with cross-functional teams, ensuring that our platform is scalable, secure, and efficient.

Are you a passionate data engineer eager to innovate within the data products landscape?Join our dynamic data team at SoSafe, a leading cybersecurity startup in Europe, and help lay the groundwork for a data-driven future. Your expertise will be critical in enhancing our data infrastructure and converting raw data into actionable insights that fuel our products and foster business growth.Your impact will be felt through:Designing and maintaining robust data pipelines and platform components to support SoSafe's products, analytics, and AI initiatives.Creating efficient ingestion and serving workflows using AWS, Airflow, and event-driven architectures.Enhancing platform reliability by focusing on monitoring, alerting, CI/CD optimizations, access management, and infrastructure modifications (Terraform).Upholding existing architecture and standards while working to enhance data quality and developer experience.Collaborating with Analytics, Product Engineering, and ML teams to deliver dependable datasets, event schemas, and data contracts.Assisting internal teams by troubleshooting data pipelines, resolving data issues, and operationalizing new use cases.Engaging in code reviews and technical discussions, documenting solutions for sustainable maintainability.What makes you an ideal candidate:4+ years of hands-on experience in building and maintaining production data pipelines (AWS preferred).Proficient in Python and SQL, with experience using tools such as Airflow, dbt, and Kafka.Familiarity with infrastructure as code (Terraform), CI/CD practices, and managing data systems in a production environment.Comfort in working within a shared platform context: adhering to standards, managing operational tasks, and delivering in an incremental manner.Experience with data quality and fundamental observability practices.Capable of owning tasks from inception to completion — implementation, validation, and documentation.Excellent communication skills, collaborating effectively with engineers, analysts, and product partners.Motivated, reliable, and execution-oriented, with a desire to expand into broader platform responsibilities.Fluency in English is essential.

Role overview Speechify seeks a Tech Lead to guide the Android Core Product team in Cologne, Germany. This position shapes the technical direction for Android development, balancing hands-on engineering with leadership. The Tech Lead works closely with teams to deliver reliable, high-quality Android applications, with a strong focus on code quality and app performance. What you will do Lead the architecture and development of Android applications Collaborate with cross-functional teams to refine and launch user-focused features Establish and maintain coding standards and performance benchmarks Mentor junior developers and promote best practices in software development Drive technical decisions for the Android platform at Speechify Requirements Proven experience leading Android development projects Strong background in mobile technologies Ability to work effectively with diverse teams Interest in mentoring and supporting engineers Motivation to make an impact in a fast-moving setting Location This position is based in Cologne, Germany.

About the Team Join the Sell Online Tribe at SumUp, where we are transforming how merchants establish their online presence. Our team designs and builds solutions that empower millions of entrepreneurs—from barbers to bakers—to sell their products and services from anywhere. With a focus on Online Store and Bookings, our products form the backbone of SumUp’s ecosystem, enabling merchants to manage appointments, showcase offerings, and process payments seamlessly from their mobile devices. We are a dynamic, cross-functional team of Product Managers, Designers, and Engineers dedicated to creating exceptional mobile experiences. As part of our team, you’ll play a vital role in expanding into new industries, bridging the gap between web and mobile platforms, and simplifying digital commerce for small businesses globally. About the Role As a Senior Backend Engineer within the Bifrost team, you will be instrumental in the development of SumUp's key merchant-facing online products. You will contribute to the growth and scalability of pivotal products such as Payment Links, Virtual Terminal, and Unified Gift Cards, while also enhancing integration products that deliver essential functionalities across various SumUp services. We seek a developer who champions reliability, collaboration, and continuous improvement. You will thrive in a high-impact environment where your contributions directly enhance merchant success and team scalability. Your Responsibilities Ensure redundancy for the scalability and continuous enhancement of SumUp’s high-priority online products. Contribute to the implementation, growth, and integration of Online Checkouts across SumUp. Engage actively in planning and review sessions at both quarterly and sprint levels, providing constructive feedback and accurate estimations. Monitor existing services and perform necessary fixes to maintain platform reliability. Implement new features with maintainable and testable code. Optimize application performance for improved scalability. Participate in code reviews to uphold high standards of code quality. You Will Excel in This Role If: You possess over 5 years of experience in backend engineering, specifically with Golang. You demonstrate a strong grasp of fundamental system architecture, design principles, data modeling, and API design. You have substantial experience with distributed and fault-tolerant systems. You are passionate about continuous learning and improvement.

Role Overview Speechify is hiring an iOS Core Product Software Engineer to help build and improve our iOS applications. This role is based in Cologne, Germany. The position centers on developing new features and refining the performance and user experience of our mobile products. What You Will Do Work on the core iOS product, shaping how users interact with our app Collaborate with team members to design, implement, and test new features Focus on app performance, reliability, and usability Who We’re Looking For Experience building iOS applications Strong interest in mobile technology Motivated to contribute ideas and take ownership of solutions This is a chance to join a team that values initiative and cares about delivering a great product experience.

redcare-pharmacy seeks a Senior iOS Developer to help design and build mobile apps that enhance pharmacy services. This position is based in Cologne and involves leading technical efforts in a collaborative setting. Key responsibilities Collaborate with cross-functional teams to deliver iOS applications from initial idea through release Take the lead on development projects and make key technical decisions Mentor junior developers and support their professional growth Uphold high standards for code quality and app performance Stay current with trends and advancements in iOS development Location The role is located in Cologne.

Role Overview redcare-pharmacy is looking for a Senior AI Engineer in Cologne. This role focuses on building artificial intelligence solutions that support and improve healthcare services. The Senior AI Engineer works closely with engineers and data scientists to develop applications that make a difference for customers.

Join our dynamic team at redcare-pharmacy as a Senior MLOps Engineer! In this pivotal role, you will leverage your expertise in machine learning operations to streamline and enhance our AI-driven pharmacy solutions. You will collaborate with data scientists, software engineers, and product managers to implement scalable and efficient MLOps processes.

Role Overview redcare-pharmacy is hiring a Senior Product Manager to guide the development of our Retail Media Platform. This role focuses on driving product strategy and expanding the platform’s features for digital marketing and e-commerce. What You Will Do Shape the vision and roadmap for the Retail Media Platform Lead product development efforts in close collaboration with cross-functional teams Identify opportunities to improve platform capabilities for e-commerce and digital marketing Location Based in Cologne.

Join our innovative team at redcare-pharmacy as a Senior Data Engineering Manager. In this pivotal role, you will lead the data engineering team to design, develop, and maintain scalable data solutions that drive business insights and enhance operational efficiency. Your expertise will be crucial in shaping our data strategy and ensuring our systems are robust and efficient.

About the RoleWe are looking for a talented Senior Product Design Engineer to join our team and play a pivotal role in the design, review, and approval of cutting-edge engineering developments for autonomous robotic systems in greenhouse settings. This position is essential for ensuring that our next-generation agricultural robots are durable, dependable, user-focused, and prepared for large-scale implementation.Key ResponsibilitiesDesign, review, validate, and approve engineering designs for greenhouse autonomous robots.Conduct kinematic and motion analysis of linkages, joints, and robotic mechanisms to enhance performance.Ensure adherence to functional requirements, safety regulations, and manufacturing limitations.Investigate field issues, customer feedback, and failure patterns to identify risks and drive design enhancements.Collaborate with cross-functional teams, field engineers, and clients to define requirements and create prototypes.

Join Trusted Shops, where we are dedicated to developing innovative SaaS solutions for over 40 million users and 30,000 businesses across Europe. Our product range includes the Trustbadge, buyer protection solutions, and the eTrusted Experience Feedback Platform. For 25 years, our mission has been to foster trust between individuals and businesses in the digital age.Our Product & Engineering Department comprises 15 cross-functional teams distributed across three product domains (Consumer, Business, and Platform), all working in an agile environment.We are looking for a skilled and inquisitive Senior Fullstack Software Engineer (f/m/d) to join our Platform Domain. If you thrive in dynamic settings, enjoy solving complex problems with code, and are driven to enhance the overall user experience, we want to hear from you.As part of our Trstd Login Team, you will help develop the next generation of secure and user-friendly authentication tools designed to build trust between users and companies.Your Responsibilities as a Senior Fullstack Software Engineer (f/m/d):Collaborate closely with an interdisciplinary product team of growth-oriented developers, product, and delivery experts to create reliable, scalable, and impactful solutions.Develop cross-platform web components, leveraging your deep expertise in leading eCommerce systems such as Shopware, PrestaShop, WooCommerce, Magento, and Shopify to ensure seamless integration and high performance across all environments.Implement secure system communication using OAuth2 and OIDC while embracing a technology-agnostic approach to tackle technical challenges. You will utilize stable, proven technologies under the principle of 'Choose Boring Technology'.Take ownership of your work from start to finish in a culture of 'You build it, you own it'—from developing new features to CI/CD deployments, monitoring, and infrastructure automation with Terraform and Infrastructure as Code (IaC).Why Join Trusted Shops?Personal Development: You will receive direct support for your professional growth...

About WPP MediaWPP is recognized as a trusted growth partner for the world's foremost brands. By leveraging exceptional talent, reliable data, and strategic partnerships, all unified through our innovative marketing platform, WPP Open, we empower clients to navigate change, seize opportunities, and achieve transformational growth.WPP Media, our AI-driven media operating unit, integrates media, data, and partnerships to deliver creative personalization at scale. Through WPP Open and powered by Open Intelligence, clients gain clear insights into their media investments – understanding where, how, and why their strategies succeed.For more details, please visit wppmedia.com.WPP stands for creative transformation. Harnessing the power of creativity, we strive to shape a better future for our employees, clients, communities, and the planet. This is where WPP Media comes in: as WPP's global media network, we unite the best platforms, talents, and partners to create new opportunities for limitless growth in a connected media landscape.At T&P, we position ourselves as a data-driven communications agency dedicated to integrating creativity, technology, and data in new, exciting, and effective ways. We call it the &Model, and the premise is straightforward: Creation, Strategy, Media, and Data/CRM work in tandem to tackle challenges as a cohesive team closely collaborating with the client.

Join our dynamic team at alten as an Electrical Engineer specializing in substations. In this role, you will leverage your expertise to design, develop, and enhance electrical substation systems. Collaborate with a talented group of professionals to deliver innovative solutions that meet industry standards and client expectations.

About WPPWPP is the trusted growth partner for the world’s leading brands. We bring together cutting-edge media intelligence and data solutions, world-class creativity, next-generation production, transformative enterprise solutions, and expert strategic counsel within a single organization — all powered by exceptional talent and our innovative marketing platform, WPP Open. Our mission is to assist clients in navigating change, seizing new opportunities, and achieving transformational growth. For more information, visit WPP.com.At WPP Media, we are dedicated to creative transformation. Leveraging the power of creativity, we aim to foster a brighter future for our employees, clients, communities, and the planet. As a global media network of WPP, we unite the best platforms, talents, and partners to create new opportunities for limitless growth in an interconnected media landscape.Our team at T&P sees itself as a data-driven communication agency, with a mission to intertwine creativity, technology, and data in exciting and effective ways. We call it the model, and the premise is simple: Creation, strategy, media, and data/CRM work together as a cohesive team that collaborates closely and partnership with clients.

Role Overview Cowboy is looking for an E-Bike Test Ride Ambassador based in Cologne (remote within the city and surrounding area). This role centers on creating memorable test ride experiences that help future customers discover Cowboy’s connected e-bikes, designed for city life with smart features and a clean look. Learn more about the company at cowboy.com. What You Will Do Host complimentary test ride appointments scheduled through the Cowboy website. Meet prospective customers at agreed locations in Cologne, introduce them to the bike, and guide them through a short ride. Answer questions about setup, features, battery range, theft protection, app functions, financing, and delivery. Deliver a positive, engaging first impression of the Cowboy brand. Follow up after rides (by message, email, or phone) to support customers as they consider a purchase. Keep your schedule and availability up to date, and report on test ride outcomes. What We Look For Based in or near Cologne, with good knowledge of the city. Genuine enthusiasm for cycling and representing Cowboy professionally. Comfortable meeting new people and guiding them through a hands-on product experience. Experience in sales or customer-facing roles (such as retail, hospitality, events, or field sales) is a plus. Reliable, well-organized, and quick to respond. Fluent in both German and English. Benefits and Compensation Work with a growing e-mobility brand. Set your own schedule with full flexibility. Receive training and ongoing product support. Active, outdoor, and people-focused work. Earn EUR 24 per test ride (VAT excluded) plus a 4% commission on sales (VAT excluded). Our Commitment to Diversity Cowboy values diverse backgrounds and perspectives. Every team member’s unique skills help shape our mission to improve urban mobility.

Eight Advisory, established in 2009 by a team of eight former partners from Arthur Andersen and other Big 4 firms, specializes in Transaction Services, Restructuring, and Transformation. With a robust workforce of over 950 employees, including 115 partners, Eight Advisory operates across France, the UK, Belgium, Netherlands, USA (New York), Spain, Germany, and Switzerland. As part of the Eight International Network, which boasts more than 650 professionals in over 20 countries, we cater to the increasing demand for expert financial advice from private equity firms, mid-sized and large corporations, and investment banks.We are on the lookout for a driven and detail-oriented individual to join our Strategy & Operations team in Cologne as a Manager / Senior Manager.In this pivotal role, you will:Engage in a highly exclusive environment, evaluating strategic plans while conceptualizing and executing M&A transactions, including carve-outs, integrations, and joint ventures, alongside other intricate business transformations like reorganizations and value creation for both domestic and international corporate and private equity clients.Oversee team members and lead projects/workstreams to enhance Strategy & Operations on a European scale.Collaborate with specialists in transformation, restructuring, valuation, tax, and transaction services, with an emphasis on the strategic and operational dimensions of transformation initiatives.Interact directly with top management of clients, take on responsibilities in business development and marketing efforts, and play an integral role in driving our remarkable growth trajectory.In recognition of your outstanding contributions, you can expect a competitive remuneration package, exceptional career advancement opportunities in the consulting sector, and a healthy work-life balance.