Technical Architect - Composable Commerce
6-Month Initial Contract | £800/day max | Inside IR35
Remote
We're looking for a highly experienced, hands-on Technical Architect to provide technical leadership for a strategic composable eCommerce platform supporting a major retail and optical client.
The role combines architecture, engineering leadership and production support, with a strong focus on commerce tools, MACH architecture, TypeScript/Node.js and Microsoft Azure. You'll play a key role in transitioning technical ownership from an incumbent supplier while driving platform reliability, continuous improvement and engineering best practice.
The Role
You'll be responsible for:
Providing senior technical leadership across production support, incidents, defects, changes and enhancements
Acting as the senior escalation point for complex technical issues and major incidents
Leading root cause analysis and driving permanent, high-quality fixes
Reviewing architecture, technical approaches, code and pull requests
Investigating complex production issues across applications, APIs, integrations, SaaS and Azure
Supporting knowledge transfer and establishing independent technical ownership
Mentoring engineers and strengthening the team's commerce, cloud and platform capabilities
Improving CI/CD, automated testing, deployment automation, monitoring and observability
Driving automation, platform hardening, resilience and technical debt reduction
Working constructively with suppliers and technical teams to challenge solutions and ensure decisions are evidence-based
Essential Technical Experience
Composable Commerce / commercetools
Proven commercial experience designing, building and supporting commercetools production solutions
Strong understanding of commercetools APIs, configuration, data structures and integration patterns
Experience troubleshooting complex commercetools production issues
Strong understanding of headless, API-first and composable commerceMACH Architecture
Strong practical experience with:
Microservices
API-first design
Cloud-native SaaS
Headless architecture
Event-driven and distributed systems
Integration resilience and failure handlingTypeScript / Node.js
Strong hands-on TypeScript and Node.js development
Ability to read, debug, review and write production-quality TypeScript
API, integration service and serverless development
REST API and third-party SaaS integrations
Commercetools SDK experience highly desirableMicrosoft Azure
Strong experience supporting cloud-native applications on Azure
Hands-on Azure Functions, ideally using TypeScript/Node.js
Azure App Services and serverless/PaaS architectures
NoSQL experience, with Cosmos DB highly desirable
Ability to troubleshoot performance, networking, configuration and integration issuesFrontend / Web Architecture
Strong understanding of modern web and headless commerce architectures
Working knowledge of React and Next.js
Ability to troubleshoot issues across complete customer journeys
Retail & eCommerce Experience - Essential
You'll need significant experience delivering or supporting high-volume B2C retail/eCommerce platforms, ideally across multi-market or multi-region environments.
Experience should include customer journeys such as:
Product discovery and search
Basket/cart and checkout
Customer journeys
Promotions
Payments
Order managementExperience integrating commerce platforms with CMS, PIM, payment, search, promotions, customer and order management systems is highly desirable.
DevOps / SRE / Operational Engineering
Strong experience across:
CI/CD and deployment automation
Infrastructure and configuration as code
Automated unit, integration and regression testing
Monitoring, logging, tracing and observability
Root cause analysis and problem management
Resilience and platform hardening
Technical debt management
Production debugging
Release and rollback strategies
Automated operational runbooks
Vulnerability remediation
Shift-left engineering and continuous improvement
Technology Environment
The platform incorporates technologies including:
commercetools | React / Next.js | TypeScript / Node.js | Azure Functions | Azure App Services | Cosmos DB | Contentful | Algolia | Talon.One | Adyen | Cloudflare | GitHub CI/CD | Infrastructure as Code | OpenTelemetry | Splunk
Equivalent technologies may also be considered where the candidate has strong composable commerce experience.
What We're Looking For
We're looking for someone with strong technical credibility who can operate comfortably between architecture, engineering and live production support.
You should be confident challenging technical decisions constructively, diagnosing complex issues using code, logs and telemetry, remaining calm during major incidents, and balancing rapid service restoration with long-term engineering quality.
Contract Details
Role: Technical Architect - Composable Commerce
Duration: 6 months initially
Rate: Up to £800 per day
IR35: Inside IR35
Location: Remote
Start: September 2026This is a hands-on Technical Architect role - not a purely strategic architecture position. The successful candidate will be expected to get into the technical detail, support production issues and actively guide engineering teams
