Staff Fullstack Engineer - Retail

Job Description

About your tasks:

• Shape architecture across the Transaction domain: Provide technical direction across two engineering teams and connected domains, designing scalable distributed solutions across frontend and backend. You’ll facilitate complex architectural decisions and make pragmatic, data-driven trade-offs around performance, security, reliability, maintainability and cost, while identifying risks that extend beyond an individual team.
• Build the next generation of Transaction: Remain hands-on across frontend and backend, shaping customer-facing experiences with React and scalable backend capabilities with Java. You’ll influence solutions from early discovery and system design through implementation and production, while helping establish the foundations for future native iOS and Android checkout experiences.
• Raise engineering standards beyond one team: Drive the adoption of architecture, performance, security, testing, observability and reliability practices. Work with engineering leads and specialist teams to turn recurring technical challenges into reusable patterns, guidelines and platform capabilities rather than solving them locally.
• Lead complex initiatives through influence: Create alignment between Checkout, Payments, Orders, Shipping and other dependent teams where ownership and technical priorities cross boundaries. Mentor engineers, facilitate architecture and design discussions and provide technical direction without relying on formal authority, enabling teams to make stronger decisions independently.
• Connect technology, customers and business impact: Partner with Product, UX and engineering leadership to identify opportunities, challenge assumptions and translate business needs into sustainable technical strategy. Use data, metrics and industry trends to evaluate trade-offs, prioritise high-impact investments and determine when to evolve existing capabilities versus introduce new technologies or approaches.

Qualifications

About you:

• You bring deep, hands-on frontend engineering expertise with React and TypeScript, combined with professional backend development experience in at least one language or framework (e.g. Node.js, Java, Python or similar). You're comfortable working across the stack, contributing to production backend services and APIs, and taking ownership of customer-facing applications.

• You have operated at Staff/Principal level or demonstrated equivalent technical scope, with experience designing complex systems and driving architectural decisions that affect multiple teams or domains. Other senior engineers seek your input, and you’re comfortable creating technical alignment where there are competing requirements, constraints and opinions.

• You have a strong record of leading through influence and growing other engineers. You can mentor experienced engineers, facilitate architecture and design discussions, introduce engineering standards and create an environment where teams can make high-quality technical decisions without making yourself a bottleneck.

• You combine technical depth with strong business and product judgement. You work effectively with Product, UX, Security, SRE and engineering stakeholders, use metrics and evidence to guide decisions and think beyond the immediate solution to achieve the best outcome for the wider organisation.

• Experience with checkout, payments, orders, e-commerce or marketplace systems is a strong plus; exposure to native Android/Kotlin or iOS/Swift development would be valuable for where the domain is heading.

Additional Information

About your benefits:

In order to provide you with the best possible support for your individual needs - whether it‘s living a healthy life, having enough time for your family, or developing your skills - we offer a wide range of different, site-specific benefits:

• Sports: Stay healthy. Profit from a membership (M) package at Urban Sports Club, so that you can take advantage of a huge variety of sport offers.

• Work from Home: If your job does not require you to be present in the office, we can arrange the place you work from individually - even for up to 20 days a year anywhere in the EU.

• Mobility: We provide our employees with a fully costed Deutschland Ticket which can be used at any time.

• Personal development: Grow! We support and encourage your individual development through various in- and external trainings.

• Vacation: 30 days paid vacation per annum (plus another day on Rosenmontag) and the option to take unpaid vacation of up to 10 days (after one year working with us).

• Employee discount: You get a 10 % employee discount on all over the counter, beauty and personal care products in our online store & 20 % discount on nu3.

Compensation Grade: Grade 15