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

As a software engineer in one of our core product teams, you’ll help shape the modern evolution of our technology. We’re building scalable, high performance software that powers thousands of brands and retailers across Europe.

You’ll contribute to a growing ecosystem designed for resilience, speed and customer impact. If that sounds exciting, we’d love to talk!

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

As a key member of our engineering team, you will drive the development of our user-facing features. You\’ll take ideas from concept to production, ensuring we build scalable, high-quality, and user-friendly applications.

Design & Develop: Architect, build, and maintain clean, efficient, and reusable code using either Java or Python. Both are supported and strong proficiency in one is expected

Problem Solve: Take a proactive approach by suggesting, researching, and implementing solutions to complex technical challenges.

Collaborate: Work closely with Product Management, Frontend, and Platform teams to design robust APIs and backend services. You will translate business problems into scalable technical solutions.

Own Your Work: Take full ownership of the services you build, including writing comprehensive unit and integration tests to ensure quality and long term maintainability.

Innovate & Improve: Always look for opportunities to improve systems, whether it is performance, cost efficiency, architecture, or developer experience. Your technical insight and pragmatism will be key.

Align & Lead: Act as a technical leader within your team and on cross team projects, helping to define service boundaries, ensure quality, and deliver reliable solutions.

Proven ability and experience building scalable backend systems using either Java or Python

Technical Skills:

Strong experience with Java (JDK 21 or newer) or Python (3.11 or newer)

Experience with backend frameworks such as Spring Boot (Java) or Django/Flask (Python)

Experience with relational databases such as PostgreSQL or MySQL and NoSQL databases such as DynamoDB or MongoDB

Strong knowledge of REST API design, OpenAPI , and optionally SOAP

Familiarity with event and streaming systems, including technologies like Amazon SQS and Amazon Kinesis

Good understanding of AWS services such as Lambda , EC2 , S3 , and OpenSearch

Proficient with containerisation tools such as Docker, and local cloud emulation tools such as LocalStack

Experience with CI/CD and GitOps using tools like GitLab, Bitbucket, GitHub, and Argo CD

Quality & Testing:

Unit and component testing:

Java: experienced with JUnit 5 for backend test coverage

Python: experienced with pytest for backend logic and component

End to end testing:

Java: familiar with E2E test frameworks such as Cucumber for service and integration testing

Python: experienced with Radish or Behave for validating backend workflows

Mindset & Communication:

You have a proactive approach , constantly suggesting and finding solutions

Your creativity and attention to detail drive you to improve everything you touch

You have a very good command of English (written and spoken)

EMPLOYEE BENEFITS YOU’LL LOVE

You’ll play a decisive role in shaping an agile, fast-growing, international company and be supported by an open-minded working environment

Competitive salary package, employee share shop, 40% Zalando shopping discount (30% Zalando Lounge)

You’ll be given various learning and development opportunities to enhance your professional development

Flexible working hours, home office options

27 vacation days per year that increase up to 30 days, volunteering time off and several sabbatical options after 2 years

We’ll help you commute to the office with zero emissions: through a rented company bike or by charging you electric car at our e-charging station

Access to additional German or English classes to improve your language skills

Visa support for our foreign employees relocating to Germany

A variety of health offers to support your well-being, as well as free beverages and fruits

Please note that all applications from this job page must be completed using the online form – we do not accept applications via e-mail. Once reviewed, our recruiters will contact applicants via an official Zalando email address (@zalando.de).

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.

If you have any questions about our recruitment process, please take a look at our FAQ page .

About Zalando

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.

#J-18808-Ljbffr