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ASOS.com Tech Stack

Fashion e-commerce platform scaling ML and supply-chain optimization

Retail Apparel and Fashion London, London 1,001–5,000 employees Founded 2000 Public Company

ASOS operates a global fashion e-commerce business with 3,000+ employees across engineering, design, product, and marketing. The tech stack reveals a dual-layer architecture: .NET/C# microservices on Azure (App Service, Functions, Cosmos DB, Service Fabric) paired with a sophisticated ML/data layer (PyTorch, TensorFlow, Databricks, Kafka, Redshift). Active projects—causal pricing algorithms, supply-chain optimization models, batch and online ML deployment—signal a shift toward algorithmic product decisions and demand forecasting. The hiring velocity is accelerating with 52 roles posted in the last 30 days, skewed heavily toward senior engineers and designers, suggesting either high churn or aggressive product expansion.

Tech Stack 74 technologies

Core StackPython PyTorch TensorFlow Hugging Face Docker Kubernetes MLflow SQL Server Databricks C# Azure Functions Kafka DynamoDB Redshift Terraform GitHub Excel Adobe .NET Framework NET Standard NET Core Azure Service Fabric Azure Kubernetes Service Azure Service Bus Azure Cosmos DB Azure SQL Database Azure App Service AWS SQS AWS SNS Azure Pipelines+44 more

What ASOS.com Is Building

Challenges

  • Reducing returns
  • Improving efficiency and creative quality
  • Performance problems at scale
  • Complex integrations with payments providers
  • Speed to market
  • Inbound inefficiencies
  • Minimizing n/a stock
  • Streamlining customs processes
  • Improving quality assurance
  • Reducing audit risk

Active Projects

  • Launch of topshop.com
  • Asos payment processing system
  • Tax transformation initiatives
  • Wholesale collection design and development
  • Wssi forecasting
  • Causal algorithms for pricing and targeting
  • Batch and online ml model deployment
  • Predictive and optimisation models for supply chain
  • Unified personalised customer journey
  • Product detail page maintenance

Hiring Activity

Accelerating90 roles · 50 in 30d

Department

Engineering
19
Design
14
Product
11
Marketing
8
Ops
7
Sales
6
Finance
5
Support
5

Seniority

Senior
51
Mid
15
Junior
9
Manager
9
Lead
6
Director
1

Notable leadership hires: Head of Engineering, Head of Product, Change Lead

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About ASOS.com

ASOS is a London-based public fashion retailer and marketplace serving primarily 20-something consumers globally. The platform combines inventory management, payment processing, personalization, and fulfillment at scale. Recent initiatives include relaunching Topshop as a standalone brand, building causal models for dynamic pricing and targeting, and deploying ML systems for supply-chain forecasting and returns reduction. Operationally, the company spans product design, engineering, supply-chain optimization, and international wholesale distribution across the United Kingdom and Turkey.

HeadquartersLondon, London
Company Size1,001–5,000 employees
Founded2000
Hiring MarketsUnited Kingdom, Turkey

Frequently Asked Questions

What tech stack does ASOS use?

ASOS runs on .NET Framework/Core/C# microservices hosted on Azure (App Service, Kubernetes, Cosmos DB, SQL Database), with Python, PyTorch, TensorFlow, and Databricks for ML workloads. Data flows through Kafka, Redshift, and DynamoDB; infrastructure is managed with Terraform.

Where is ASOS headquartered?

ASOS is headquartered in London, United Kingdom. The company is publicly listed and employs 1,001–5,000 people, with active hiring in the UK and Turkey.

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