THE ROLE AND THE TEAM The ZEOS B2B Platform department is the core engine enabling our partners to seamlessly integrate with and scale within the Zalando ecosystem. By unifying complex business services under a high-performance platform umbrella, we provide a holistic API-first environment that empowers our partners to grow their business with speed and flexibility. As a Principal Software Engineer at ZEOS, you will be a key architect of the common platform and ecosystem that powers both partner-facing and internal products. In this role, you don't just build services; you shape the technical landscape that allows diverse B2B solutions to interact, scale, and thrive. Together with an elite team of engineers and product managers, you will design the foundational REST services and microservices that serve as the interface between our complex internal operations and the external market. With ZEOS we shape the future of the Zalando logistics ecosystem - please read more HERE. You will be the architectural guide for a platform that turns business complexity into scalable, cost-efficient, and secure software. By bridging the gap between high-level business requirements and robust Java-based engineering, you will drive the cross-unit alignment necessary to keep our platform compliant, extensible, and best-in-class. Your work ensures that ZEOS remains the premier choice for B2B partners looking to leverage the power of Zalando’s infrastructure. INCLUSIVE BY DESIGN If you think you have what it takes, we encourage you to apply even if you don't meet every single requirement. You may just be the right candidate for this or other roles! At Zalando, our vision is to be the leading pan-European ecosystem for fashion and lifestyle e-commerce – one that thrives on diversity and is truly inclusive by design. We believe that diverse teams fuel innovation and creativity, and we actively seek out talent from all backgrounds. We actively seek to reduce bias in our hiring and employment processes, focusing on your qualifications, skills, and contributions. To support this, we kindly ask that you refrain from including personal details such as your photo, age, or marital status in your CV, ensuring a fair and equitable evaluation based solely on your abilities and potential. We are committed to providing an exceptional and accessible candidate experience for everyone. If you require any accommodations to support you throughout the hiring process, please let us know – we are here to assist you. Discover more about our commitment to creating a diverse and inclusive workplace: https://jobs.zalando.com/en/our-culture/diversity-and-inclusion WHAT WE’D LOVE YOU TO DO (AND LOVE DOING) Architect Scalable Ecosystems: Design and drive the technical vision for high-traffic customer portals and internal tools using React, TypeScript, and Node.js. Master Modular Landscapes: Guide the transition and optimization of our Micro Frontend (MFE) and SPA architectures, ensuring seamless integration across the ZEOS partner landscape. Bridge Business & Technical Needs: Translate complex business opportunities into Solution Designs that are not only scalable and cost-efficient but also strictly compliant with industry standards. Support Infrastructure & Security: Guide deployment strategies within AWS and Kubernetes environments, ensuring robust Web Security through the implementation of Okta/OpenID and sophisticated proxy/gateway configurations. Foster Technical Excellence: Act as a core member of our Principal Community, driving cross-area architectural consistency and elevating development processes through CI/CD, high test coverage, and Design System (DS) maturity. Align & Empower Delivery: Support multi-disciplinary teams (Engineers, Designers, PMs) and manage high-level stakeholders to ensure project alignment and technical integrity. WE'D LOVE TO MEET YOU IF Experienced Strategic Leader: You bring 3+ years of experience as a Principal Engineer or Solutions Architect, with a proven track record of leading complex, multi-team projects in cloud environments. Deep Frontend Expertise: You possess expert-level knowledge of the modern web stack (React, TS, Webpack) and have deep experience managing the complexities of Micro Frontends at scale. Cloud & Infrastructure Knowledge: You are comfortable navigating AWS and Kubernetes and have a strong grasp of networking fundamentals, including reverse-proxies and API gateways. Security-Conscious Mindset: You have practical experience implementing modern authentication flows (OpenID/Okta) and protecting applications against sophisticated web vulnerabilities. Agile Champion: You thrive in an Agile environment, owning the full development lifecycle from initial discovery to CI/CD deployment and automated testing. Empathetic Mentor & Communicator: You excel at translating "tech-speak" for stakeholders and possess the leadership clarity needed to mentor senior engineers through difficult architectural decisions. Balanced Practitioner: You are a master of delegation and high-level system thinking, but you aren't afraid to get hands-on when a critical technical challenge requires your direct expertise. OUR OFFER Zalando provides a range of benefits, here’s an overview of what you can expect. Ask your Talent Acquisition Partner to learn more about what we offer. 27 days of holiday a year to start for full-time employees (+1 day for every calendar year up to 30 days) 2 paid volunteering days a year Hybrid working model with up to 60% remote per week, actual practice is up to each team to best support their collaboration Work from abroad for up to 30 working days a year Employee shares program 40% off fashion and beauty products sold and shipped by Zalando, 30% off Lounge by Zalando, discounts from external partners Relocation assistance available (subject to prior agreement) Family services, including counseling and support Health and wellbeing options (including Wellhub, formerly Gympass) Mental health support and coaching available Drive your development through our training platform and biannual peer-to-peer review