We unite cutting-edge media intelligence and data solutions, world-class creativity, next-generation production, transformative enterprise solutions and expert strategic counsel in a single company – powered by exceptional talent and our agentic marketing platform, WPP Open, to help our clients navigate change, capture opportunity and deliver transformational growth. About WPP Media WPP is the creative transformation company. WPP Media is WPP’s global media collective. In a world where media is everywhere and in everything, we bring the best platform, people, and partners together to create limitless opportunities for growth. At WPP Media, we believe in the power of our culture and our people. It’s what elevates us to deliver exceptional experiences for both our clients and each other. In this role it will be critical to embrace WPP & WPP Media’s shared core values: We are seeking a talented and experienced Backend Engineer to join our Data & Technology Solutions team. You will be instrumental in designing, developing, and maintaining the robust and scalable backend systems that power our cutting-edge marketing technologies, including the WPP Open AI platform. If you have a passion for building high-performance APIs, working with large datasets, and contributing to the future of AdTech, we want to hear from you. A proficient backend developer with a strong understanding of software architecture, design patterns, and distributed systems. Solution-oriented, capable of translating complex business requirements into technical designs and scalable implementations. Passionate about code quality, testing, and maintaining secure, reliable, and performant applications. A collaborative team player, eager to work alongside fellow engineers, data scientists, and product owners. Continuously learning, staying current with the latest backend technologies and best practices to drive innovation. Design and Develop Robust Backend Systems Design, develop, and implement high-performance, scalable, and resilient backend services and APIs (REST, gRPC) that support our various data products and AI platforms. Python (mandatory), Node.Collaborate with architects and senior engineers to define system architecture, data models, and integration strategies. Integrate with internal and external data sources, AI/ML services, and third-party APIs relevant to the AdTech ecosystem. Optimize existing backend services for maximum speed, scalability, and stability, handling large volumes of data and traffic inherent in the AdTech domain. Participate in performance tuning, troubleshooting, and debugging of complex backend systems. Uphold Code Quality and Best Practices Develop comprehensive unit, integration, and end-to-end tests to guarantee the quality and reliability of backend components. Contribute to technical documentation, including API specifications, architectural diagrams, and system runbooks. If this opportunity looks right for you, we are looking for candidates who have: ~3+ years of professional experience in backend software development. ~ Strong proficiency in Python ~ Solid understanding of database systems, both relational (e.G., Familiarity with containerization technologies (Docker) and orchestration (Kubernetes). ~ Knowledge of message queues/event streaming platforms (e.G., Bachelor’s degree in computer science, Engineering, or a related technical field, or equivalent practical experience. Our passion for shaping the next era of media includes investing in our employees to help them do their best work, and we’re just as committed to employee growth as we are to responsible media investment. WPP Media employees can tap into the global WPP Media & WPP networks to pursue their passions, grow their networks, and learn at the cutting edge of marketing and advertising. We have a variety of employee resource groups and host frequent in-office events showcasing team wins, sharing thought leadership, and celebrating holidays and milestone events. Our benefits include access to internal learning platforms, certifications, and training sessions, life insurance, medical care & sports card in Medicover, funding for English language learning, employee mental health awareness day, and more. We are committed to fostering a culture of respect in which everyone feels they belong and has the same opportunities to progress in their careers. We are committed to offering equal opportunities to all employees, which is why we only establish collaborations based on employment contracts. We believe the best work happens when were together, fostering creativity, collaboration, and connection. Thats why we’ve adopted a hybrid approach, with teams in the office two days a week. Following a detailed review of all applications, we will contact those candidates whose qualifications and stated terms of cooperation most closely align the objectives of our recruitment process. The controller of your personal data is the WPP Media Poland sp. The personal data you provide will be processed for the purpose of the recruitment process. By providing us with personal data beyond the scope required by the Labour Code, you consent to the processing of such data for the purposes of the recruitment process. In addition to the salary range provided, we offer a comprehensive benefits package designed to support our employees well-being and professional growth. While specific details may vary by agency, typical benefits often include: private medical care, professional development opportunities, training programmes and flexible working arrangements (where applicable).