Principal Engineer – Frontend

Principal Engineer – Frontend As a Principal Engineer focusing on Frontend, you shape the technical direction of our eCommerce platform exactly where architecture, developer experience, and conversion meet. You work across teams and domains, set standards for the entire frontend landscape, and ensure that our independently deployable systems (Self-Contained Systems / Micro-Frontends) deliver a consistent, fast, and accessible customer experience – without restricting the autonomy of the teams. You lead through technical excellence instead of a reporting line: At our Principal Engineer level (Individual Contributor Track), you take on technical leadership and act as a coach, role model, and sparring partner for engineers, team leads, and our domain architecture. Principal Engineer – Frontend What awaits you Responsibility for the frontend architecture across multiple teams and domains – from storefront and search to checkout, account, and loyalty Further development of our standards for React, TypeScript, Server-Side Rendering, Micro-Frontends, and Self-Contained Systems Building and establishing common component foundations as well as a scalable design system Targeted optimization of web performance and Core Web Vitals as relevant levers for customer experience and conversion Designing modern rendering, streaming, edge, caching, and bundle strategies as well as meaningful frontend observability Eliminating organization-wide technical blockers in local development, tooling, build pipelines, and architecture Embedding security, accessibility, and privacy by default in the entire frontend landscape Definition and further development of our AI tooling strategy including suitable architecture, automated code reviews, and effective use of modern engineering tools Technical coaching of engineers and team leads as well as close collaboration with domain architecture, product management, and leadership Representation of our technical direction within the organization, towards budget holders, and in the external tech community What you bring with you At least ten years of experience in modern software development with a strong focus on frontend as well as at least two years in a technical leadership or architecture role Deep practical experience with React and TypeScript in productive, business-critical applications Sound knowledge in Server-Side Rendering, for example with Remix or a comparable setup, as well as with Micro-Frontends or Self-Contained Systems Proven expertise in web performance, Core Web Vitals, accessibility, and the development of fast, scalable customer experiences Confident handling of concepts such as DDD, Clean Architecture, Event-Driven Architecture, SOLID, feature flags, and dependency injection as well as with design systems, state management, and component-driven development Solid understanding of distributed systems, DevOps practices, automated testing, CI/CD, and operating systems according to the principle "You build it, you run it" Experience in a fast, product-oriented engineering organization with short iterations, regular releases, and true end-to-end responsibility Enjoyment in sharpening requirements together with product management, understanding customer needs, and making technical decisions from a user and business perspective Strong coaching and communication skills, servant-leadership mindset, and the ability to drive complex changes with perseverance, warmth, and humor Very good German and/or English skills as well as continuous curiosity about new technologies, methods, and AI-supported software development Are you interested or do you have further questions? Sercan Ugur is happy to assist you with any questions. Write an e-mail (<>) About us "Together we shape the retail of tomorrow" employs around 1300 people and generates over one billion in turnover. The company exists because one person had the courage to find new ways and follow them. Our success story shows that through every individual, something great is created together, and we love our uniqueness. We set ambitious goals, and it is very important to us that we act responsibly, support and challenge each other, and enjoy what we do every day. Our recruitment process You create your profile in our career portal and apply directly online for the advertised position. You will immediately receive an acknowledgment of receipt, and within at most 10 working days, you will receive feedback on how to proceed. While you extend your patience to us, we personally take the time to review your application and define the next steps. If your documents are convincing, then we will get to know each other via live video call or in a personal interview. The "match" is mutual. Then we proceed to the second round of interviews where you get to know your future workplace and the team. YES – we have decided on each other! The employment contract will be delivered to you digitally, and after the conclusion of the contract, you will receive access to our internal communication channels, and at the same time, we will prepare your onboarding process. Benefits Discounts: Attractive discounts in the Brack online shop as well as lunch discounts and staff restaurants in Mägenwil and Willisau. Recovery: At least 5 weeks of vacation, additionally there is the possibility for vacation purchase and unpaid leave. Development: Internal training in our own academy as well as financial participation in external further education. Family: 18 weeks of paid maternity leave with extension