Job
- Level
- Experienced
- Location
- Hamburg, Berlin
- Working Model
- Onsite
- Job Field
- Data, Back End
- Employment Type
- Full Time
- Contract Type
- Permanent employment
- Salary
- 60.000 to 70.000€ gross/year
Job Summary
In this role, you will develop the recommendation engine for ABOUT YOU's homepage using Node.js and TypeScript, implement ML models, personalize logic, and build GenAI features focusing on low latency and high performance.
Job Technologies
Your role in the team
- Develop the recommendation engine powering ABOUT YOU's homepage, product, and outfit pages in Node.js/TypeScript.
- Serve offline-trained ML models (matrix factorization, brand similarity, image embeddings) at Black-Friday scale from Valkey, DynamoDB, and OpenSearch.
- Design personalization logic: feed assembly, fallback chains, deduplication, diversity, and A/B experimentation.
- Build GenAI product features like our streaming Gemini fashion advisor, focusing on low latency, session state, and token cost control.
- Own reverse-ETL pipelines that move BigQuery model outputs into high-performance hot stores.
- Instrument recommendation coverage, track business metrics via SQS/BI systems, and shape architecture alongside our Tech Lead.
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Our expectations of you
Qualifications
- You take end-to-end responsibility for our recommendation engine and love seeing your changes directly impact customer engagement.
- Real depth in Redis/Valkey data modeling, caching hierarchies (multi-tier, TTLs/invalidation), and binary payloads (Protobuf/Avro).
- High-throughput mindset: comfortable operating APIs that scale to 10k+ rps under strict latency SLOs.
- You're excited to bridge backend engineering and ML by serving model scores, embeddings, or LLM features in live systems.
- Klare Kommunikationsfähigkeiten in Englisch und eine datengesteuerte, experimentierfreudige Denkweise.
Experience
- 3+ years of experience building high-throughput backend services (Node.js/TypeScript preferred, or fast-converting from Java, Go, or Kotlin).
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What we offer
- € 60,000-70,000 per year.
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Benefits
Work-Life-Integration
Health, Fitness & Fun
Food & Drink
Topics You Will Work On
Job Locations
About Your Employer
About You
As a rapidly growing online fashion retailer in Europe, ABOUT YOU has won multiple awards. As a fashion company and technology company, we work together to make the shopping experience more inspiring and personal for our customers.
Description
- Language
- English
- Company Type
- Established Company
- Working Model
- Full Remote, Hybrid, Onsite
- Industry
- Trade, Internet, IT, Telecommunication
Employer reviews
by devworkplaces.com
Total
(1 Review)3.7
Workingconditions
4.0Engineering
3.6Culture
3.5Career Growth
3.6
Backend Engineer - Recommendation
- Salary
- 60.000 to 70.000€ gross/yearEstimated net salary based on the gross salary in the job ad using tax class I.37.561 to 42.583 € net/year · Tax class I
- Location
- Hamburg, Berlin
- Working Model
- Onsite
- Diversity
- Open for all genders
- English Only
- English only required
