Senior Software Engineer - Backend (all genders) at Zalando

Ansbach, Bavaria, Germany

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Not SpecifiedCompensation

Senior (5 to 8 years)Experience Level

Full TimeJob Type

UnknownVisa

E-commerceIndustries

Requirements

Proven ability and experience building scalable backend systems using either Java or Python
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
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
Proactive approach, constantly suggesting and finding solutions
Creativity and attention to detail to improve everything touched
Very good command of English (written and spoken)

Responsibilities

Architect, build, and maintain clean, efficient, and reusable code using either Java or Python
Take a proactive approach by suggesting, researching, and implementing solutions to complex technical challenges
Work closely with Product Management, Frontend, and Platform teams to design robust APIs and backend services, translating business problems into scalable technical solutions
Take full ownership of the services built, including writing comprehensive unit and integration tests to ensure quality and long-term maintainability
Look for opportunities to improve systems in performance, cost efficiency, architecture, or developer experience
Act as a technical leader within the team and on cross-team projects, helping to define service boundaries, ensure quality, and deliver reliable solutions

Skills

Key technologies and capabilities for this role

JavaPythonAPIsBackend ServicesUnit TestingIntegration TestingScalable Architecture

Questions & Answers

Common questions about this position

What programming languages and frameworks are required for this role?

Strong proficiency in either Java (JDK 21 or newer) or Python (3.11 or newer) is required, along with experience in backend frameworks such as Spring Boot for Java or Django/Flask for Python.

What databases and AWS experience is needed?

Experience with relational databases like PostgreSQL or MySQL, NoSQL databases such as DynamoDB or MongoDB, and a good understanding of AWS services are required, along with knowledge of REST API design and event streaming systems like Amazon SQS and Kinesis.

Is remote work or flexible scheduling offered?

We offer flexible work schedules to support work-life balance.

What is the company culture like at Tradebyte?

Tradebyte fosters a workplace where everyone feels valued, supported, and empowered, embracing diverse perspectives, ensuring every voice is heard, and committing to work-life balance and professional development.

What makes a strong candidate for this Senior Software Engineer role?

Candidates with proven experience building scalable backend systems using Java or Python, strong technical skills in frameworks, databases, APIs, and AWS, plus the ability to problem-solve, collaborate, own work, innovate, and lead technically will stand out.

Zalando

European online fashion retail marketplace

About Zalando

Zalando operates as a major e-commerce platform in Europe, focusing on fashion and lifestyle products. It allows customers to shop for a wide variety of clothing, shoes, and accessories from both established and emerging brands through its website and mobile app. The platform generates revenue by selling products directly to consumers and earning commissions from third-party sellers who list their items on Zalando. A key feature of Zalando is its commitment to providing a smooth shopping experience, which includes free delivery and returns, a large selection of products, and personalized recommendations. Zalando Plus, a premium membership program, offers additional benefits like faster shipping and exclusive deals. The company distinguishes itself from competitors by investing in technology and logistics to enhance customer satisfaction and streamline operations.

Berlin, GermanyHeadquarters

2008Year Founded

$149.8MTotal Funding

IPOCompany Stage

Consumer Software, Consumer GoodsIndustries

10,001+Employees