Systems Developer – E-Commerce Integrations; Cloud-Native, AI-Driven

Systems Developer

We are seeking a Systems Developer with expertise in backend systems integration to join our fast‑paced, tech‑forward software engineering team. This role focuses on developing and maintaining scalable, cloud‑native solutions that integrate our e‑commerce platform with critical business systems including Warehouse Management Systems (WMS), Enterprise Resource Planning (ERP), and Finance applications. This is a hands‑on, architecture‑informed development role requiring deep expertise in enterprise integration patterns, modern software engineering practices, and system interoperability within a high‑volume e‑commerce environment.

• Design and develop robust backend integrations between e‑commerce platforms (particularly Magento) and enterprise systems including WMS solutions (Order Flow, SAP, Manhattan, Blue Yonder, Odoo, or similar) and ERP/Finance platforms (Sage, Net Suite, Odoo, Microsoft Dynamics, SAP, or similar).
• Implement enterprise integration patterns including message routing, content enrichment, and data synchronisation to ensure reliable communication between distributed systems.
• Build scalable middleware solutions for order management, inventory synchronisation, and real‑time data exchange between e‑commerce and warehouse operations.
• Develop cloud‑native, containerised microservices following Domain‑Driven Design principles and clean architecture patterns.
• Create and maintain REST APIs and event‑driven integrations ensuring secure, performant communication across the technology estate.
• Apply software design patterns and best practices including SOLID principles, dependency injection, repository patterns, and test‑driven development.
• Implement queue‑based processing for asynchronous workflows, particularly for high‑volume order processing and inventory updates.
• Ensure system resilience through circuit breakers, retry mechanisms, and graceful degradation strategies for handling peak trading periods.
• Champion coding standards through comprehensive code reviews, pair programming, and knowledge‑sharing sessions.
• Leverage observability tools to monitor integration health, identify bottlenecks, and ensure SLA compliance.
• Collaborate with cross‑functional teams including Dev Ops & Development, and Warehouse Operations to deliver robust solutions.

• 5+ years commercial development experience in at least one of the following languages:
  Golang, C# with ASP.NET Core, PHP, Python.
• Strong database expertise with SQL (MySQL, Postgre
  
  SQL, or SQL Server) including query optimisation and schema design.
• Proven experience with WMS/ERP integrations, including familiarity with at least one of the following solutions:
  Order Flow, SAP Business One, Microsoft Dynamics, Salesforce Commerce Cloud, etc.
• E‑commerce platform experience with API integrations.

• Deep understanding of design patterns including Gang of Four patterns, enterprise integration patterns, and architectural patterns.
• Proficiency in software architecture principles.
• Clean Architecture and Hexagonal Architecture.
• Domain‑Driven Design (DDD) and bounded contexts.
• SOLID principles and dependency management.
• The Twelve‑Factor App methodology.
• Experience with Modern Development Practices.
• Test‑Driven Development (TDD) and Behaviour‑Driven Development (BDD).
• Continuous Integration/Continuous Deployment (CI/CD).
• Code quality tools and static analysis.
• Version control with Git and branching strategies.

• Container orchestration with Docker and container management.
• Cloud platforms experience, preferably AWS (EC2, Lambda, SQS, RDS) with understanding of Azure or GCP.
• Message queuing systems (Rabbit
  
  MQ, AWS SQS, Redis) for event‑driven architecture.

• Experience with Kubernetes for container orchestration.
• Knowledge of Graph
  
  QL for modern API development.
• Familiarity with AI‑assisted development tools (Git Hub Copilot, GPT‑based tools).
• Understanding of PCI compliance and data security in e‑commerce.
• Experience with high‑volume retail events (Black Friday, seasonal peaks).
• Exposure to warehouse automation systems and EDI.
• Mathematics or Computer Science degree (or equivalent experience).