Principal Frontend Engineer - ZEOS Portal

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. 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. Zalando is inclusive by design and encourages applications from all backgrounds. They actively seek to reduce bias in hiring and ask candidates to refrain from including personal details such as photo, age, or marital status in CVs.

Architect Scalable Ecosystems: Design and drive technical vision for high-traffic customer portals and internal tools using React, TypeScript, and Node.js. Master Modular Landscapes: Guide transition and optimization of Micro Frontend (MFE) and SPA architectures, ensuring seamless integration across ZEOS partner landscape. Bridge Business & Technical Needs: Translate complex business opportunities into Solution Designs that are scalable, cost-efficient, and compliant with industry standards. Support Infrastructure & Security: Guide deployment strategies within AWS and Kubernetes, ensuring robust Web Security via Okta/OpenID and sophisticated proxy/gateway configurations. Foster Technical Excellence: Act as core member of Principal Community, driving cross-area architectural consistency and elevating development processes through CI/CD, high test coverage, and Design System maturity. Align & Empower Delivery: Support multi-disciplinary teams (Engineers, Designers, PMs) and manage high-level stakeholders to ensure project alignment and technical integrity.

Experienced Strategic Leader: 3+ years as Principal Engineer or Solutions Architect with proven track record leading complex multi-team projects in cloud environments. Deep Frontend Expertise: Expert-level knowledge of modern web stack (React, TS, Webpack) and deep experience managing Micro Frontends at scale. Cloud & Infrastructure Knowledge: Comfortable with AWS and Kubernetes, strong grasp of networking fundamentals including reverse-proxies and API gateways. Security-Conscious Mindset: Practical experience implementing modern authentication flows (OpenID/Okta) and protecting applications against sophisticated web vulnerabilities. Agile Champion: Thrives in Agile environment, owning full development lifecycle from discovery to CI/CD deployment and automated testing. Empathetic Mentor & Communicator: Excels at translating tech-speak for stakeholders and mentoring senior engineers through difficult architectural decisions. Balanced Practitioner: Master of delegation and high-level system thinking, but not afraid to get hands-on when critical technical challenges require direct expertise.

27 days of holiday a year to start for full-time employees (+1 day per calendar year up to 30 days). 2 paid volunteering days a year. Hybrid working model with up to 60% remote per week. 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). Mental health support and coaching available. Drive development through training platform and biannual peer-to-peer review.