Senior Backend Engineer (Node.js)

TL;DR

Senior Backend Engineer (Node.js): Building and optimizing smart product-stream sorting systems with an accent on high-traffic API design and large-scale data processing. Focus on integrating machine learning models and generative AI into the core product experience while ensuring system scalability and performance.

Location: Must be based in or able to work from Hamburg or Berlin, Germany

Compensation: €70,000–€85,000 yearly

Company

A leading fashion e-commerce company focused on acceptance, inclusion, and innovative digital retail solutions.

What you will do

• Develop smart product-stream sorting algorithms using Node.js and TypeScript.
• Manage large data volumes using Google BigQuery and integrate with BI systems.
• Build and maintain high-traffic, low-latency APIs.
• Collaborate with data scientists and product managers to launch new features.
• Explore and implement new technologies, including machine learning and generative AI.
• Ensure high code quality and maintainability across the backend architecture.

Requirements

• 5+ years of experience building scalable APIs using Node.js, Python, or Go.
• Practical experience with a typed language like TypeScript.
• Solid knowledge of SQL or No-SQL databases.
• Strong analytical and problem-solving skills.
• Experience working in an English-speaking, agile environment.
• Ability to own product features and drive technical improvements.

Nice to have

• Experience with Datadog for monitoring and alerting.
• Hands-on experience with cloud ecosystems like AWS or GCP.
• Familiarity with orchestration services like Dagster or Airflow.
• Experience with Elasticsearch, OpenSearch, or dbt.
• Experience with machine learning models or LLM-based systems.

Culture & Benefits

• Flat organizational structure with rapid decision-making.
• Strong focus on innovation and contribution to product development.
• Inclusive and diverse work environment.
• Access to comprehensive company benefits and professional growth opportunities.