A

ABOUT YOU

E-commerce fashion retailer offering personalized recommendations

Lead Backend Engineer - Personalization

Backend EngineeringConfirmed live in the last 24 hours
Full-time€85k /yr

About the Job

Requirements

  • At least 7 years of experience developing scalable backend systems and APIs, with a demonstrated record of taking technical responsibility.
  • Current hands-on experience with a typed programming language, ideally Node.js/TypeScript, or a strong background in Java, Go, or Kotlin.
  • Deep understanding of backend architectures, distributed systems, APIs, data stores, and performance optimization.
  • Strong algorithmic and analytical thinking, and interest in Search, Recommendations, Ranking, or Personalization.
  • Experience working at the intersection of backend engineering and machine learning, such as serving model scores, embeddings, or machine-learning-based features in production systems.
  • A strong commitment to clean, maintainable code and driving technical improvements beyond one's own area of responsibility.
  • Confidence in architectural decisions and willingness to challenge existing approaches and establish engineering standards across teams.
  • Very good English communication skills and the ability to work effectively with engineers, data experts, and product stakeholders.
  • Willingness to take responsibility, share knowledge, and support other engineers' development.

Responsibilities

  • Take technical responsibility for complex backend systems in Search, Recommendations, or Sorting, from conception through production operation.
  • Shape the architecture of high-performance, low-latency services and further develop the technical foundations of the Personalization area.
  • Develop and operate backend systems connecting machine-learning models, search and ranking algorithms, behavioral data, and business logic.
  • Make technical decisions across team boundaries and establish standards that improve system scalability, reliability, and maintainability.
  • Work closely with data scientists, data engineers, analysts, and product managers to turn data and experiments into concrete product improvements.
  • Mentor and support other engineers, share expertise, and actively advance the technical level across the area.
  • Evaluate new technologies and approaches, contribute ideas, and continuously improve development and operational processes.

Desired Qualifications

  • A strong technical background in Search, recommender systems, Ranking, or Personalization.
  • Practical experience with Elasticsearch/OpenSearch, Redis/Valkey, high-throughput APIs, or other performance-critical backend systems.
  • Familiarity with machine-learning-based systems, large language models, embeddings, vector search, or learning-to-rank approaches.
  • Experience operating large-scale systems with demanding latency and availability requirements.
  • Exposure to cloud ecosystems such as AWS or GCP and data platforms such as BigQuery, dbt, or Dagster.
  • Experience in e-commerce or areas such as Search, Recommendations, or Advertising, where relevance and personalization directly affect customer experience.

About the Company

ABOUT YOU

E-commerce fashion retailer offering personalized recommendations

ABOUT YOU is an online fashion retailer that offers a wide range of clothing, shoes, and accessories from over 2,000 top brands. The company serves fashion-conscious women who follow the latest trends and styles. It runs on an e-commerce website that provides a seamless shopping experience with a user-friendly interface, easy ordering, and multiple payment options. Revenue comes from selling products directly to consumers, often supported by promotions and discounts. Data analytics power personalized shopping by recommending items based on individual preferences and browsing history. Compared with competitors, ABOUT YOU stands out with its expansive brand selection, data-driven personalized recommendations, frequent promotions, and a focus on a smooth online experience. The company's goal is to help customers discover and buy the latest fashion items efficiently while driving sales through tailored offerings.

Company size
1,001-5,000
Company stage
IPO
Headquarters
Hamburg, Germany
Founded
2013

Recently Posted Jobs

Explore more opportunities at ABOUT YOU

See more jobs