Senior Backend Engineer

We are looking for a passionate senior backend engineer with strong experience in designing, developing, and scaling backend systems that power our products. You will own the backend components of your domain team and work closely with product managers and front–end engineers to ship high quality features to our end users.

• Own end‑to‑end backend services, operating with autonomy and proactively addressing technical challenges.
• Play an active role in the development of high‑traffic, real‑time, geo‑located online applications and surrounding ecosystems.
• Design and implement REST APIs on our AWS infrastructure, making use of AWS services for new components.
• Monitor backend services in production environments to ensure high performance, scalability, and reliability.
• Explore technologies such as AWS, PostgreSQL, Elasticsearch, and REST API.
• Build a system in the spirit of Agile methodologies (Scrum, Kanban).

• Strong experience building backend applications.
• Experience with Node.js and/or Java 21+ (Spring Boot).
• Experience with hosting on AWS and using AWS’s services.
• Experience with agentic tools such as LLM agents, AI copilots, and Claude Code.
• Hands‑on experience with inter‑service communication, fault‑tolerant distributed systems, distributed caching mechanisms, and microservice architectures.
• Proficiency with Docker and Kubernetes.
• Familiarity with CI/CD pipelines and cloud platforms (preferably AWS) is highly desirable.
• Experience with PostgreSQL and Elasticsearch.
• Very good communication skills; able to express ideas clearly.
• First experience in an agile software development team.
• Ability to work independently, responsibly, accurately and reliably.
• Team player, yet ambitious.
• Bachelor or master’s degree in computer science or a related field.
• Fluent in spoken and written English;
  German is not required.
• Eager to learn new technologies and interested in cloud architecture.

• High growth story – a dynamic company with continuous potential.
• Innovation & tech – a high‑tech focus on AI and other tools.
• Professional development – strong support and a feedback culture.
• Diversity – equal‑opportunity workplace dedicated to inclusivity.
• Wellbeing – access to a mental health app, a fully equipped gym, and a subscription to Urban Sports Club, plus a corporate pension scheme.
• Sustainability – opportunities to engage in projects that promote environmental sustainability.
• Flexibility – up to 20% mobile work within Germany, option to work from abroad, 28 days holiday plus an extra day per calendar year.
• Modern office – Zen Rooms, a gym, and a roof terrace.
• Free lunch – a variety of options, drinks, snacks and breakfast are provided at the office.
• Social culture – regular team events and community building.
• Visa sponsorship – for candidates outside Germany.
• Partner for retail – we empower retailers to reach customers effectively.

If you think you could fit the bill, we'd love to hear from you!

We are an equal opportunity employer; we do not discriminate on the basis of race, religion, sex, sexual orientation, age, disability, gender identity, or any other protected characteristic.