About this role
We are seeking an experienced Technical Lead to design and implement cloud-native, serverless architectures with a SaaS-first approach, specializing in Order Management Systems (OMS) integration. You will be a hands-on senior individual contributor responsible for building scalable, AI-integrated systems across multiple cloud platforms (AWS, Azure, GCP). This role focuses on modern cloud infrastructure, AI/LLM integrations, OMS architecture, SaaS orchestration using n8n.io, and managing complex omnichannel order fulfilment systems.
You will architect and implement serverless solutions that connect our e-commerce platforms (Shopify), warehouse and fulfilment systems, Order Management Systems, data pipelines, AI capabilities, and enterprise applications. This is a 100% hands-on IC role focused on technical execution, system design, and driving innovation through cloud-native, AI, and OMS technologies. You will set the technical direction for cloud infrastructure, AI integration, and OMS strategies while owning delivery of complex, production-grade systems.
Key Responsibilities
Design and implement serverless, cloud-native architectures across AWS, Azure, and GCP; prioritize managed services and SaaS solutions over custom infrastructure
Own Order Management System (OMS) architecture: design, implement, and optimise multi-channel order management, order routing, fulfilment workflows, inventory synchronization, and order status management
Architect integrations between Shopify, OMS, warehouse management systems (WMS), fulfilment partners (247 Commerce, Mantle), and enterprise systems; ensure real-time order data synchronization and visibility
Design and implement n8n.io workflows for complex OMS orchestration: order creation, fulfilment automation, inventory updates, shipping integration, and customer notification flows
Architect and build AI/LLM integrations: implement AI APIs (OpenAI, Anthropic, Azure OpenAI, etc.), vector databases, embeddings, and AI-powered features for order intelligence, customer service, and demand forecasting
Own full-stack cloud infrastructure: serverless compute (Lambda, Cloud Functions, Azure Functions), databases (managed SQL/NoSQL), messaging, caching, storage, and CDN
Write production-quality code across application layers; spend 70-80% of time hands-on coding, architecture, and technical problem-solving
Implement infrastructure-as-code to manage multi-cloud deployments; design repeatable, scalable infrastructure patterns
Build and maintain CI/CD pipelines for serverless and containerized applications; automate deployment, testing, and monitoring across cloud platforms
Design observability solutions: implement logging, distributed tracing, metrics, and alerting specifically for OMS and order fulfilment workflows
Integrate cloud systems with e-commerce platforms (Shopify), PIM systems, loyalty programs, MS Fabric fulfilment partners, and enterprise data systems; manage complex multi-channel data flows
Establish technical standards for cloud architecture, OMS design, AI integrations, and infrastructure-as-code; conduct design reviews and provide technical guidance
Optimise cloud costs and performance; identify inefficiencies and drive improvements to OMS reliability, scalability, and order processing speed
Participate in on-call rotation; respond to production incidents including order fulfilment disruptions and critical cloud infrastructure issues
Stay current with cloud, AI, and OMS technologies; evaluate emerging services and tools for organisational adoption.
Qualifications
Bachelor's degree in Computer Science, Software Engineering, or related field (or equivalent professional experience)
8-12 years of professional software development with 5+ years focused on cloud infrastructure and serverless architectures
3+ years experience with Order Management Systems, e-commerce order fulfilment, or retail systems integration
Expert-level expertise with at least two major cloud platforms (AWS, Azure, GCP); strong understanding of multi-cloud architecture patterns
Deep experience with serverless computing: Lambda/Cloud Functions/Azure Functions, API Gateway, event-driven architectures, and serverless databases
Proven experience designing OMS architectures for multi-channel retail operations; knowledge of order routing, fulfilment workflows, and inventory management
Hands-on experience with Shopify or similar e-commerce platforms; understanding of order API design and webhooks
Proven experience implementing AI/LLM integrations in production systems; comfort with OpenAI APIs, vector databases, embeddings, and generative AI applications
Hands-on experience with n8n.io or similar workflow automation/integration platforms; ability to design and implement complex multi-step workflows
Expert knowledge of infrastructure-as-code (Terraform, CloudFormation, Bicep) and GitOps practices
Strong full-stack development skills: backend (Node.js, Python, or similar), APIs (REST, GraphQL), and frontend (JavaScript/TypeScript)
Expertise with managed databases: SQL (RDS, CloudSQL, Azure Database), NoSQL (DynamoDB, Cosmos DB, Firestore), and vector databases
Proficiency with CI/CD tools (GitHub Actions, GitLab CI, CodePipeline) and containerization (Docker, optional Kubernetes)
Experience with observability platforms (CloudWatch, Application Insights, Google Cloud Logging, Datadog) and distributed tracing
Demonstrated experience with SaaS platform integrations and API-first architecture patterns
Strong problem-solving skills; comfort with ambiguity and complex distributed systems
Excellent communication skills; ability to explain complex cloud, AI, and OMS concepts clearly.
Preferred Qualifications
AWS Solutions Architect Associate or Professional; Azure Administrator or Developer certification
GCP Professional Cloud Architect or Data Engineer certification
Experience with Google Maps APIs, Routes API, and location-based services for store locators, delivery optimization, and fulfilment routing
Experience with specific OMS platforms (SAP Commerce, NetSuite, modern cloud-native OMS)
Knowledge of Shopify Plus or enterprise Shopify implementations
Experience with warehouse management systems (WMS) and fulfilment automation
Knowledge of Product Information Management (PIM) and product data integration
Experience building mobile applications or progressive web apps
Familiarity with headless CMS (Contentful, Sanity) and decoupled architectures
Experience with machine learning model deployment and MLOps practices
Knowledge of advanced n8n features and custom node development
Experience with compliance frameworks (PCI-DSS, GDPR) and security best practices in cloud and retail environments
Technical Skill Areas
Order Management & Retail:
OMS architecture, order routing logic, fulfilment workflows, inventory management, multi-channel order processing
Shopify order APIs, webhook handling, custom fulfilment integrations
Magento API, webhook, custom development
WMS integration, fulfilment partner APIs, shipping label generation, tracking systems
Cloud Platforms:
Azure: Functions, App Service, Cosmos DB, SQL Database, Storage, Logic Apps
GCP: Cloud Functions, Cloud Run, Firestore, Cloud SQL, Cloud Pub/Sub, Cloud Storage, Cloud Tasks, Vertex AI, BigQuery
GCP APIs: Maps API, Routes API, Places API, Geolocation API, Cloud Logging, Cloud Monitoring, Cloud Trace
AI & Machine Learning:
LLM APIs: OpenAI, Anthropic Claude, Azure OpenAI, Google Gemini
Vector databases: Pinecone, Weaviate, Milvus
RAG systems, embeddings, prompt engineering, AI agents
Integration & Automation:
n8n.io: workflow design, OMS integrations, custom nodes, error handling
API orchestration, webhooks, event-driven order processing
Infrastructure & DevOps:
Infrastructure-as-Code: Terraform, CloudFormation, Bicep
CI/CD: GitHub Actions, Azure, GCP, CodePipeline
Monitoring & observability: CloudWatch, Datadog, distributed tracing
Backend & Frontend Development:
Node.js, Python, TypeScript; REST/GraphQL APIs
Frontend: JavaScript/TypeScript, React, responsive design
Core Competencies
Order Management Expertise: Deep understanding of OMS architecture, multi-channel order fulfilment, and omnichannel retail operations
Cloud Architecture: Deep expertise in serverless, SaaS-first design; ability to architect multi-cloud solutions
AI Integration: Proficiency in implementing production AI systems using LLMs and modern AI tools
Integration Mastery: Ability to design and build complex workflows connecting disparate systems via APIs and n8n
Technical Excellence: Strong software engineering principles; insists on quality, testing, and maintainability
Full-Stack Capability: Comfortable across all application layers from frontend to cloud infrastructure
Systems Thinking: Designs resilient, scalable systems that anticipate performance and reliability challenges
Ownership: Takes responsibility for system design and delivery; drives solutions from conception to production
Pragmatism: Balances cutting-edge technologies with business realities; makes sound trade-off decisions
Continuous Learning: Stays current with rapidly evolving cloud, AI, and OMS landscapes.
Reporting to
Group Head of IT
Pay: £70,000.00 per year
Work Location: In person
