Backend Java Developer – London - Freelance

Context

This digital product is part of a high-growth strategic pillar dedicated to digital expansion. It is a critical solution enabling product sales through a diverse network of external channels (general marketplaces, social commerce, quick-commerce). The platform is currently undergoing a major transformation, involving a complete Java-based architectural rebuild to break away from legacy technical silos and evolve into a connectivity middleware within the Business Capability Platform (BCP).

The objective is to ensure:

• very fast time-to-market
• seamless country integration with global channels
• 100% reliable price and stock synchronization

The feature team is based in the United Kingdom and operates with a strong culture of collaboration, innovation, and technical excellence.

Missions

• Architectural rebuild: Actively contribute to the migration and reconstruction of the core architecture using Java Spring Boot for a composable, cloud-native ecosystem.
• Connector development: Design and optimize technical connectors for a diverse range of global channels (marketplaces, social commerce, quick-commerce).
• Catalog publication flow: Lead the rebuild of catalog publication workflows, including category mapping, product variant synchronization, and asynchronous marketplace APIs.
• Business logic migration: Collaborate on migrating complex business rules (pricing calculations, stock filtering, fulfillment decisions) into dedicated BCP assets, allowing the solution to focus on orchestration and connectivity.
• System reliability: Ensure real-time synchronization of stock and pricing with 100% accuracy to prevent financial discrepancies and improve customer experience.

Tools & Environment

• Java Spring Boot
• PostgreSQL
• Redis / Valkey
• REST Architecture and Event-Driven Architecture
• Google Cloud Platform (GCP) and Kubernetes clusters
• Bonus: Experience with Python

Working Conditions

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