[Remote] Senior Software Engineer - Backend (all genders)

Note: The job is a remote job and is open to candidates in USA. Tradebyte, part of the Zalando Group, collaborates with major e-commerce players to create a supportive workplace. They are seeking a Senior Software Engineer - Backend to develop scalable, high-performance software that enhances user-facing features and contributes to a resilient ecosystem. Responsibilities • 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 Skills • 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 • Java: experienced with JUnit 5 for backend test coverage • Python: experienced with pytest for backend logic and component • Java: familiar with E2E test frameworks such as Cucumber for service and integration testing • Python: experienced with Radish or Behave for validating backend workflows • 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) Benefits • 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 Company Overview • Creating fresh ways to connect fashion and people. It’s not just a vision, it’s what we do each day. It was founded in 2008, and is headquartered in Berlin, Berlin, DEU, with a workforce of 10001+ employees. Its website is Apply tot his job