Senior Backend Engineer - Search & Discovery

Hybrid | Hamburg or Berlin, Germany | Experienced

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* Senior Backend Engineer - Search & Discovery (all genders) – Hamburg or Berlin, Germany

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* You love investigating the "why" behind search outcomes and turning those findings into actionable technical improvements * 5+ years of experience building scalable, low-latency backend APIs (Node.js/TypeScript preferred, or fast-converting from Java, Go, or Kotlin) * Real depth in Elasticsearch/OpenSearch (mappings, custom analyzers, percolators, scoring functions) beyond just basic query clients * Strong algorithmic intuition for ranked data (merging, deduplication, score blending, and latency trade-offs) * You're excited to bridge backend engineering and ML by serving model scores, embeddings, or LLM features in production * Fluent English communication skills and a pragmatic, data-curious mindset

Nice to Have

* IR/NLP fundamentals (tokenization, multilingual search, relevance evaluation frameworks) * Vector search experience (k-NN/HNSW indices, SigLIP embeddings, recall vs. latency tuning) * LLM engineering (prompt caching, timeout budgets, Datadog LLM Observability) * Familiarity with BigQuery, dbt, or Dagster pipelines

70k - 85k €

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A Place Where You Can Be You

We take it as our responsibility to create an environment where everyone feels welcome, exactly as they are. Different backgrounds and perspectives make us stronger and shape our culture in ways that matter. What we stand for internally, we stand for as a brand: acceptance, inclusion, and a fairer approach to fashion.