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Senior Backend Engineer - Sorting

New

Job

  • Level
    Senior
  • Location
    Hamburg, Berlin
  • Working Model
    Onsite
  • Job Field
    Back End
  • Employment Type
    Full Time
  • Contract Type
    Permanent employment
  • Salary
    70.000 to 85.000€ gross/year

Job Summary

In this role, you will develop a high-performance ranking engine, build data pipelines from BigQuery to relational databases, and create powerful APIs using Node.js/TypeScript to intelligently sort product data.

Job Technologies

Your role in the team

  • Shape how millions of users see products by blending ML model outputs with business logic (like campaign boosts or sponsored items).
  • Build and own our high-throughput ranking engine ("Spotsetter") to ensure fast, deterministic, and fair product sorting.
  • Design reliable batch write pipelines that stream data from BigQuery straight into high-performance relational stores like Postgres and MySQL.
  • Develop low-latency serving APIs with Fastify and Node.js/TypeScript.
  • Work closely with data engineers, product managers, and commercial teams to make data-driven ranking decisions.
  • Architectural freedom: collaborate with our Tech Lead, bring in your own ideas, and keep our codebase clean.

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Our expectations of you

Qualifications

  • You love digging into ranking problems, taking deep ownership of a product, and seeing your changes move real business metrics.
  • Strong hands-on SQL knowledge (Postgres/MySQL schema design, query optimization, and batch operations beyond basic ORMs).
  • Gute algorithmische Intuition für sortierte Daten, Deduplication, Latenzkompromisse und Constraint-Logik.
  • You're excited to bridge backend engineering and ML by serving model scores or ranking data in live systems.
  • Klare Kommunikationsfähigkeiten in Englisch und eine pragmatische, lösungsorientierte Denkweise.

Experience

  • 5+ Jahre Erfahrung mit Backend-Systemen (Node.js/TypeScript bevorzugt, aber wir begrüßen schnelle Lerner aus Java, Go oder Kotlin).

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What we offer

  • € 70,000-85,000 per year.

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Benefits

Work-Life-Integration

Health, Fitness & Fun

Food & Drink

Topics You Will Work On

Job Locations

  • Location Berlin

    Germany

  • Location Hamburg

    Germany

About Your Employer

About You

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

    4.0
  • Engineering

    3.6
  • Culture

    3.5
  • Career Growth

    3.6
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Logo About You

Senior Backend Engineer - Sorting

Salary
70.000 to 85.000€ gross/yearEstimated net salary based on the gross salary in the job ad using tax class I.42.583 to 50.675 € net/year · Tax class I
Location
Hamburg, Berlin
Working Model
Onsite
Diversity
Open for all genders
English Only
English only required

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