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Lead Backend Engineer (all genders)

Hamburg or Berlin, de💼 Full-time🗓 2026-06-12 → 2026-07-31

Core

Designing and implementing search algorithms, recommendation/ranking systems, and high-traffic APIs to deliver personalized shop experiences.

Role type

Lead Backend Engineer (Search & Recommendations)

Builds

Search engines, recommendation systems, and BI solutions for e-commerce platforms.

Domain

E-commerce, Search, Machine Learning

Deliverable

production ML models | product features | infrastructure

Required skills

Scalable API design, TypeScript, SQL/NoSQL databases, Node.js, system architecture, performance optimization

Preferred skills

MPP data warehouses (BigQuery), cloud ecosystems (AWS/GCP), data orchestration (Dagster/Airflow), Elasticsearch/OpenSearch, dbt, distributed data processing, ML/LLM systems

Technologies

Node.js, TypeScript, Google BigQuery, NodeJS, Elasticsearch, OpenSearch, AWS, GCP, Dagster, Airflow, dbt

Responsibilities

Design and implement search algorithms leveraging NLP; work on recommendation or ranking systems; build and enhance high-traffic APIs; develop smart BI solutions; collaborate with data scientists and product managers.

Seniority

Senior, hands-on IC with leadership responsibilities

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