Salary: £75,000 - 85,000 per year Requirements: Experience in Solution Architecture with a clear focus on E-commerce platforms or API/Middleware ecosystems. Expert-level knowledge of Node.js, Java (Spring Boot), and PostgreSQL, including the ability to read and critique vendor code. Deep proficiency in API management patterns, Webhook integrations, and Event-Driven Architecture using Kafka or Azure Event Hubs. Demonstrable experience migrating legacy monolithic systems into containerised microservices architectures. Proficiency in Visio or LucidChart for architectural modelling. Disciplined use of Confluence for documentation practices. Responsibilities: Develop high-quality High-Level Designs (HLDs) and Low-Level Designs (LLDs) for DTS, EPOS, and other strategic workstreams. Conduct structured audits of vendor-submitted code and architecture. Enforce a Stable-by-Design framework, ensuring external deliverables meet internal quality, security, and scalability thresholds. Orchestrate complex data mapping between legacy IBM iSeries (DB2/RPG) systems and modern API middleware. Lead deep-dive investigations into recurring platform failures, error surges, latency anomalies, and data inconsistencies. Deliver long-term structural remediation rather than tactical patches. Maintain high-quality architecture documentation in Confluence, ensuring designs are versioned, accessible, and transferable to operational teams. Technologies: API Architect Azure Confluence IBM Java Kafka PostgreSQL Security Spring Spring Boot microservices NodeJS Cloud More: We are a well-established and diversified multinational organisation offering a Solutions Architect opportunity in Wembley, London, with a 5 days on-site working arrangement. This is a hands-on technical leadership role focused on creating innovative technology solutions, supporting strategic workstreams, and working closely with vendors and internal teams. The salary is up to £85,000 per annum. last updated 24 week of 2026