We are seeking a Systems Developer with a strong background in e-commerce systems and backend integrations to join our fast-paced, tech-forward software engineering team. This role will focus on the development and maintenance of scalable, cloud-native software solutions that integrate our e-commerce platform with critical business systems including Warehouse Management, Finance, Inventory, and other back-office applications. This is a hands-on, architecture-informed development role requiring expertise in modern software engineering practices and tools, with an emphasis on cloud-native applications, AI-powered development tools, and system interoperability. Key Responsibilities Design, develop, and maintain backend integrations between e-commerce systems and ERP/WMS/Finance platforms. Build cloud-native, containerised applications and services using modern frameworks and design patterns. Create middleware and intranet applications that streamline internal workflows and communication between distributed systems. Write clean, maintainable, and efficient code across multiple languages (C#, PHP, Python, JavaScript). Develop and consume REST APIs, ensuring secure, performant communication between services. Ensure scalability and resilience in applications handling large volumes of traffic and burst events. Implement and refine queue-based processing to support asynchronous workflows and event-driven architecture. Work collaboratively with cross-functional teams, including DevOps, Infrastructure, and Product, to deliver robust systems. Leverage observability tools to monitor, alert, and troubleshoot application and integration health. Stay current on AI-driven software development practices (e.g., GPT-assisted development, Agentic AI workflows) and suggest practical implementations. Participate in architecture reviews, sprint planning, code reviews, and knowledge sharing. Required Skills & Experience Strong commercial development experience in: ASP.NET Core, C# PHP, Python, JavaScript SQL dialects : MySQL, MSSQL, PostgreSQL Familiarity with Redis, ElasticSearch, REST APIs Experience with Windows-based development : services, scheduled tasks, web servers (e.g. IIS). Magento or other open-source e-commerce platform integration experience Sound knowledge of Software Architecture : Design Patterns (Enterprise, Architectural, DDD) The Twelve-Factor App Clean Code principles and Refactoring Clean Infrastructure principles Hands-on experience with: Docker, Containers Cloud platforms : AWS (preferred), Azure, or GCP Queue systems and event-driven architecture Prior experience building middleware for data sync, order processing, and internal APIs in a multi-system e-commerce environment Understanding of architecture patterns: Microservices, SOA, Hexagonal, Modular Monolith Monitoring & Observability: Grafana, Prometheus, CloudWatch, New Relic, Datadog, etc. Solid grasp of AI trends in software development, particularly in using GPT tools and agentic systems Education: Mathematics or Computer Science degree (or equivalent experience) Desirable Skills Working knowledge of VB.NET Exposure to Kubernetes