Senior Senior Software Engineer - Backend (all genders)

At Tradebyte, we work with the biggest players in e-commerce - from trendsetting fashion brands to major online retailers. Our goal is to create a workplace where everyone feels valued, supported, and empowered.

We offer flexible work schedules, professional development opportunities, and a real commitment to work-life balance. We embrace diverse perspectives and ensure that every voice is heard and respected, because you’re unique and that matters to us.

As we continue to grow, we’re looking for new colleagues who share our passion. Love what you do - do what you love. Join Tradebyte, an independent company within the Zalando Group!

THE ROLE AND THE TEAM

You’ll build resilient backend services, core platform applications, and high-throughput integrations that power Europe’s top e-commerce brands at scale. We focus on scalable APIs and seamless data transfer, giving you the technical autonomy to solve complex engineering challenges and directly enhance our platform ecosystem. If you thrive on high-impact systems and modern engineering practices, this is where you'll make a real impact.

WHAT WE’D LOVE YOU TO DO (AND LOVE DOING)

Design & Develop: Architect and build clean, scalable backend services and platform apps using modern JVM languages (Kotlin/Java, JDK 21+) or Python (3.11+).

Collaborate: Partner across Product, Frontend Engineering, and Platform teams to translate complex business challenges into robust APIs, integrations, and data flows.

Problem Solve: Collaboratively address technical challenges, using pragmatism and research to continuously improve system resilience, performance, and developer experience.

Own Your Work: Take full ownership of features from concept to production, backing your code with comprehensive unit, component, and E2E testing to ensure maintainability.

Innovate & Grow: Evolve service architecture, help define system boundaries, and share technical insights as our platform expands.

A strong foundation or eagerness to deepen expertise in modern JVM languages (Kotlin/Java, JDK 21+) or Python (3.11+), using frameworks like Spring Boot or Django/Flask.

Passion for REST API design and OpenAPI, alongside experience with or interest in relational or NoSQL databases (e.g., PostgreSQL, MySQL, DynamoDB, MongoDB).

Commitment to software quality, with comfort in writing reliable code backed by testing frameworks like JUnit 5, pytest, or E2E automation tools.

Proactive, solution-oriented mindset paired with clear communication skills in English, both written and verbal.

OUR OFFER

Tradebyte 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.

Employee shares program

40% off fashion and beauty products sold and shipped by Zalando, 30% off Lounge by Zalando, discounts from external partners

2 paid volunteering days a year

Hybrid working model - work where it works for you within Germany or the UK, with occasional office attendance required for moments that matter.

Work from abroad for up to 30 working days a year

27 days of vacation a year to start for full-time employees

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 with our training offerings and biannual peer-to-peer review

In some cases we also work with a selection of headhunters and agencies to fill specific roles. Please note that neither Zalando nor our recruiting partners will ask for any kind of payment to apply for a job or attend an interview.

Software Engineering

Our Software Engineering teams deploy software extensively, managing a broad set of applications and conducting thousands of deployments per week. The Software Engineering team enables Zalando as Europe’s number one multi-brand, digital platform for fashion, beauty, and lifestyle for our partners and customers. As a Zalando Software Engineer, you’ll be part of a community of thousands of colleagues across Europe.

It’s the perfect time to join Zalando on our journey to build the leading pan-European ecosystem for fashion and lifestyle e-commerce. Help us offer an inspiring and quality multi-brand shopping experience for fashion and lifestyle products to about 50 million active customers in 25 markets. Or be part of our logistic infrastructure, software or service capabilities to help brands and retailers run and scale their entire e-commerce business, on or off Zalando. Join our Zalando ecosystem, to enable positive change for the fashion and lifestyle industry.