Senior Backend Engineer; m​/f​/d - Product Sorting - onsite

We are looking for a Senior Backend Engineer (m/f/d) to be part of the development of our Recommendation Engine within our Business Intelligence Applications.

Our BI App circle is embedded in our circle cluster “Customer & Shop Intelligence”, which is in charge of driving a personalized and inspirational shop experience.

The team uses data from across the company and transforms it into logics & scores, used to provide the best personalized user shopping experience. You will work at the heart of our recommendation with deep insights into the algorithms behind that. Within this, you will work together with fellow engineers and data scientists to ensure that the systems serve customers in the best possible way, balancing speed and recommendation performance.

• elasticsearch
• Node.js
• Type Script
• MariaDB
• REST API
• AWS
• Google Big Query
• Google Cloud Platform
• Datadog
• Docker
• Gitlab
• PostgreSQL

• Develop smart product-stream sortings incorporating user signals while utilizing NodeJS with Type Script.
• Manage extensive data volumes efficiently, employing Google Big Query and integrating seamlessly with Business Intelligence systems and our data platform.
• Build and enhance high-traffic APIs, ensuring minimal latencies.
• Collaborate closely with seasoned engineers, product managers, data scientists, and analysts to enhance current functionalities and launch novel features.
• Encouragement for innovative ideas and creations, a flat organizational structure, and rapid decision-making processes ensure ample room for contribution and growth.
• Explore new technologies and methodologies, especially in the fields of machine learning and generative AI

• 5+ years experience in building scalable APIs (e.g. using node.js, Python or Go)
• Practical & recent experience with a typed programming language (e.g. Type Script)
• Solid know how in working with SQL or No-SQL databases
• You write well-structured, efficient and maintainable code and actively keep the quality of the code base in check
• You have excellent analytical and problem-solving skills
• You are used to working in an English-speaking and agile environment
• You raise the bar of the software you work on
• You enjoy being responsible for a product, owning it deeply and as well push for own improvement ideas to work on within the team

• Experience with centralized logging, monitoring, and alerting solutions (Datadog)
• Hands‑on experience with a cloud ecosystem (e.g. AWS, GCP) and integration with orchestration services (like Dagster or Airflow)
• Experience with Elasticsearch or Open Search
• Experience building Data Models using dbt
• Experience of running data processing pipelines using distributed data processing frameworks
• Hands‑on Experience with Machine Learning Models or LLM-based systems is a plus

• Hybrid working
• Fresh fruit every day
• Sports courses
• Free access to code.talks
• Exclusive employee discounts
• Free drinks
• Language courses
• Laracast account for free
• Company parties
• Help in the relocation process
• Mobility subsidy
• State‑of‑the‑art technology
• Central Location
• Flexible Working Hours
• Company pension
• Professional training
• Dog‑friendly office
• AY Academy
• Feedback Culture
• Job Bikes

We take responsibility for creating an inclusive and exceptional environment where all genders, nationalities and ethnicities feel welcomed and accepted exactly as they are. We believe that a diverse workforce essentially contributes to the ABOUT YOU culture. In order to maintain talent and diversity, we emphasize the care for physical health, mental health and overall well-being. Our values and work ethics essentially contribute to our brand mission: empower acceptance and shape an inclusive, fair and circular fashion culture.

We are looking forward to receiving your application – preferably via our online application portal! This way, we can ensure a faster process and for you it is very easy to upload your application documents. :

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