Principal Software Engineer (B2B)

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THE ROLE & THE TEAM

Zalando fulfills more than a hundred million customer orders every year, with increasing volumes.

Fulfillment Core builds and operates systems central to Zalando’s platform strategy, ensuring timely, efficient, and accurate delivery of over 185 million orders annually.

The role involves complex processes such as warehouse location planning, stock placement, process optimization, and managing diverse fulfillment configurations to meet various targets.

As a Principal Software Engineer, you will lead initiatives to transform Zalando's supply chain, improve customer experience, and develop self-serve products using Optimization or Simulation techniques.

You will build and develop a new team, collaborating with talented colleagues to drive innovation and resilience in supply chain operations.

Our Berlin campus in Friedrichshain offers inspiring views of the Spree river and East Side Gallery.

Berlin’s vibrant, diverse environment has shaped our business.

Are you ready for a new experience in this dynamic city?

• WHAT WE’D LOVE YOU TO DO
• Report to the Head of Applied Science for Network Optimizations and serve as a senior leader, collaborating with stakeholders across Logistic Operations, B2B units, and Applied Science teams.

Develop advanced mathematical models to optimize product availability, ensuring the right products are in the right locations at the right times while respecting network constraints.

• Engage with senior scientists and engineers to develop a long-term vision and strategy for Network Optimizations, interacting confidently with senior management.
• Optimize business processes such as inventory placement, warehouse processes, and order strategies using techniques like Discrete Event Simulation, Mixed-Integer Linear Programming, and metaheuristics.
• Contribute to other research initiatives within the business unit and participate in the Applied Scientists community through meetings, reading groups, and mentoring.
• WE’D LOVE TO MEET YOU IF…
• You have extensive leadership experience in applied sciences and engineering, especially in operations research for supply chain sectors.
• You are skilled in advanced mathematical programming, network simulation, and optimization techniques.
• You hold a strong academic background in Industrial Engineering, Operations Research, Computer Science, or a related field.
• You have a proven track record of leading impactful projects and delivering innovative solutions in industry settings.
• You excel at stakeholder engagement, teamwork, mentorship, and strategic decision-making.
• You have experience managing teams in complex, dynamic environments and fostering an inclusive, diverse work culture.
• You possess excellent organizational and time-management skills, capable of prioritizing high-stakes initiatives.
• OUR OFFER
• Employee shares program
• Discounts on fashion, beauty, and external brands
• Two paid volunteering days per year
• Hybrid work model with up to 60% remote work, flexible per team
• Work from abroad up to 30 days annually
• Starting with 27 vacation days for full-time employees
• Relocation support (subject to agreement)
• Family services, health and wellbeing options, mental health support
• Development opportunities via training platforms and reviews
• INCLUSIVE BY DESIGN

At Zalando, we aim to be an inclusive, pan-European fashion and lifestyle e-commerce ecosystem.

We assess candidates solely on merit and qualifications, welcoming diversity in all forms.

Please inform us of any accommodations needed during the hiring process.

For more on our diversity & inclusion strategy, visit our strategy .

• Additional Details
• Seniority level: Not Applicable
• Employment type: Full-time
• Job function: Engineering and IT
• Industries: Technology, Retail, IT Services & Consulting

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